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REPUBLIC SERVICES, INC. (RSG)

CIK: 0001060391. SIC: 4953 Refuse Systems. Latest 10-K as of: 2026-02-18.

SIC breadcrumb: Transportation, Communications, Electric, Gas, And Sanitary Services > Electric, Gas, And Sanitary Services > SIC 4953 Refuse Systems

SEC company page: https://www.sec.gov/edgar/browse/?CIK=1060391. Latest filing source: 0001060391-26-000094.

Informational only - descriptive public-record data, not investment advice.

Selected Fundamentals

MetricValueUnitFYFiled
Revenue19,027,000,000USD20252026-02-18
Net income2,139,249,000USD20252026-02-18
Assets34,366,000,000USD20252026-02-18

Financials

Annual standardized facts from SEC companyfacts as of latest extracted filing date 2026-02-18. Source: https://data.sec.gov/api/xbrl/companyfacts/CIK0001060391.json. Derived margins, ratios, and free cash flow are computed from the extracted annual SEC facts.

Flow metrics use full-year FY periods from 10-K/10-K/A filings; balance-sheet metrics use FY-end instants. Free cash flow = operating cash flow - capital expenditures. Missing metrics are omitted rather than fabricated.

Metric2016201720182019202020212022202320242025
Revenue11,355,400,00012,071,100,00011,898,400,00012,193,000,00012,031,700,00013,321,100,00015,645,000,00017,279,000,00018,418,000,00019,027,000,000
Net income612,588,0001,278,374,0001,036,898,0001,073,286,000967,237,0001,290,405,0001,487,586,0001,730,985,0002,043,173,0002,139,249,000
Operating income1,537,500,0001,668,500,0001,735,800,0001,787,200,0001,709,100,0002,076,200,0002,392,000,0002,780,000,0003,196,000,0003,302,000,000
Diluted EPS1.783.773.163.333.024.044.695.476.496.85
Operating cash flow1,847,800,0001,910,700,0002,242,800,0002,352,100,0002,471,600,0002,786,700,0003,190,000,0003,618,000,0003,936,000,0004,296,000,000
Capital expenditures927,800,000989,800,0001,071,800,0001,207,100,0001,194,600,0001,316,300,0001,454,000,0001,631,000,0001,855,000,0001,887,000,000
Dividends paid418,900,000440,500,000461,800,000491,200,000522,500,000552,600,000593,000,000638,000,000687,000,000738,000,000
Share buybacks403,800,000610,700,000736,900,000399,400,00098,800,000252,200,000203,000,000262,000,000482,000,000870,000,000
Assets20,629,600,00021,147,000,00021,617,000,00022,683,800,00023,434,000,00024,955,000,00029,053,000,00031,410,000,00032,402,000,00034,366,000,000
Stockholders' equity7,691,300,0007,958,800,0007,927,100,0008,118,200,0008,483,900,0008,978,900,0009,686,000,00010,542,000,00011,405,000,00011,968,000,000
Cash and cash equivalents67,800,00083,300,00070,500,00047,100,00038,200,00029,000,000143,000,000140,000,00074,000,00076,000,000
Free cash flow920,000,000920,900,0001,171,000,0001,145,000,0001,277,000,0001,470,400,0001,736,000,0001,987,000,0002,081,000,0002,409,000,000

Ratios

ROE and ROA use period-end equity/assets. Liabilities / equity uses total liabilities divided by stockholders' equity. Current ratio uses current assets divided by current liabilities when both are reported.

Metric2016201720182019202020212022202320242025
Net margin5.39%10.59%8.71%8.80%8.04%9.69%9.51%10.02%11.09%11.24%
Operating margin13.54%13.82%14.59%14.66%14.20%15.59%15.29%16.09%17.35%17.35%
Return on equity7.96%16.06%13.08%13.22%11.40%14.37%15.36%16.42%17.91%17.87%
Return on assets2.97%6.05%4.80%4.73%4.13%5.17%5.12%5.51%6.31%6.22%
Current ratio0.710.550.580.520.670.710.700.560.580.64

Financial Charts

Quarterly

Quarterly standardized facts from SEC companyfacts as of latest extracted filing date 2026-05-08. Source: https://data.sec.gov/api/xbrl/companyfacts/CIK0001060391.json.

Flow metrics use discrete quarter-length periods from 10-Q/10-Q/A filings. Q4 revenue and net income are derived only when annual FY and nine-month YTD facts exist for the same fiscal year; derived Q4 values are labeled. EPS Q4 is not derived.

QuarterEnd DateRevenueNet IncomeDiluted EPSMethod
2022-Q22022-06-301.17reported discrete quarter
2022-Q32022-09-301.32reported discrete quarter
2023-Q12023-03-311.21reported discrete quarter
2023-Q22023-06-304,321,200,000427,398,0001.35reported discrete quarter
2023-Q32023-09-304,414,200,000480,169,0001.52reported discrete quarter
2023-Q42023-12-314,396,000,000439,566,000derived Q4 = FY annual - nine-month YTD
2024-Q12024-03-314,439,200,000453,794,0001.44reported discrete quarter
2024-Q22024-06-304,663,200,000511,536,0001.62reported discrete quarter
2024-Q32024-09-304,680,200,000565,669,0001.80reported discrete quarter
2024-Q42024-12-314,635,300,000512,174,000derived Q4 = FY annual - nine-month YTD
2025-Q12025-03-314,593,000,000494,996,0001.58reported discrete quarter
2025-Q22025-06-304,882,000,000549,905,0001.75reported discrete quarter
2025-Q32025-09-304,827,000,000549,672,0001.76reported discrete quarter
2025-Q42025-12-314,727,000,000544,676,000derived Q4 = FY annual - nine-month YTD
2026-Q12026-03-314,699,000,000525,259,0001.70reported discrete quarter

Quarterly Charts

Macro Cross-References

Latest quarter (10-Q)

Latest 10-Q source: 0001060391-26-000212.

Extracted structurally from real Item 2 body heading to real Item 3/4 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2026-05-08. Report date: 2026-03-31.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

You should read the following discussion in conjunction with the unaudited consolidated financial statements and notes thereto included under Part I, Item 1 of this Quarterly Report on Form 10-Q. In addition, you should refer to our audited consolidated financial statements and notes thereto and related Management’s Discussion and Analysis of Financial Condition and Results of Operations appearing in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025.

Disclosure Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains certain forward-looking information about us that is intended to be covered by the safe harbor for “forward-looking statements” provided by the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that are not historical facts. Words such as “guidance,” “expect,” “will,” “may,” “anticipate,” “plan,” “estimate,” “project,” “intend,” “should,” “can,” “likely,” “could,” “outlook” and similar expressions are intended to identify forward-looking statements. In particular, information appearing in this “Management's Discussion and Analysis of Financial Condition and Results of Operations” includes forward-looking statements. These statements include information about our plans, strategies, and expectations of future financial performance and prospects. Forward-looking statements are not guarantees of performance. These statements are based upon the current beliefs and expectations of our management and are subject to risk and uncertainties that could cause actual results to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. Although we believe that the expectations reflected in the forward-looking statements are reasonable, such expectations may not prove to be correct. Among the factors that could cause actual results to differ materially from the expectations expressed in the forward-looking statements are the impacts of the overall global economy and changing interest rates, impacts from international trade restrictions and tariffs, our ability to effectively integrate and manage companies we acquire, and to realize the anticipated benefits of any such acquisitions, the impact of prolonged work stoppages or other labor disruptions, the amount of the financial contribution of our sustainability initiatives, acts of war, riots or terrorism, and the impact of these acts on economic, financial and social conditions in the United States and Canada, as well as our dependence on large, long-term collection, transfer and disposal contracts. More information on factors that could cause actual results or events to differ materially from those anticipated is included from time to time in our reports filed with the Securities and Exchange Commission, including our Annual Report on Form 10-K for the year ended December 31, 2025, particularly under Part 1, Item 1A - Risk Factors. Additionally, new risk factors emerge from time to time and it is not possible for us to predict all such risk factors, or to assess the impact such risk factors might have on our business. We undertake no obligation to update publicly any forward-looking statements whether as a result of new information, future events or otherwise, except as required by law.

Overview

Republic is one of the largest providers of environmental services in the United States, as measured by revenue. As of March 31, 2026, we operated across the United States and Canada through 381 collection operations, 258 transfer stations, 81 recycling centers, 209 active landfills, 2 treatment, recovery and disposal facilities, 24 treatment, storage and disposal facilities (TSDF), 5 salt water disposal wells, 15 deep injection wells, 10 industrial wastewater treatment facilities and 2 polymer centers. We are engaged in 85 landfill gas-to-energy and other renewable energy projects and had post-closure responsibility for 124 closed landfills as of March 31, 2026.

Revenue for the three months ended March 31, 2026 increased by 2.6% to $4,113 million compared to $4,009 million for the same period in 2025. This change in revenue is due to increases in average yield of 3.4%, increased revenue from acquisitions, net of divestitures of 1.1% and increased fuel recovery fees of 0.2%. These increases were partially offset by a decrease in environmental solutions revenue of 1.3% and a decrease in volume of 0.8%.

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The following table summarizes our revenue, expenses and operating income for the three months ended March 31, 2026 and 2025 (in millions of dollars and as a percentage of revenue):

Three Months Ended March 31,
20262025
Revenue$4,113100.0%$4,009100.0%
Expenses:
Cost of operations2,36657.52,31457.7
Depreciation, depletion and amortization of property and equipment4039.83899.7
Amortization of other intangible assets230.6210.5
Amortization of other assets350.9240.6
Accretion300.7280.7
Selling, general and administrative42510.342710.7
Restructuring charges24
Gain on business divestitures and impairments, net(1)(2)
Operating income$83020.2%$80420.1%

Our pre-tax income was $656 million for the three months ended March 31, 2026, compared to $665 million for the same period in 2025. Our net income attributable to Republic Services, Inc. was $525 million for the three months ended March 31, 2026, or $1.70 per diluted share, compared to $495 million, or $1.58 per diluted share, for the same period in 2025.

During each of the three months ended March 31, 2026 and 2025, we recorded a number of charges, other expenses and benefits that impacted our pre-tax income, tax expense, net income attributable to Republic Services, Inc. (net income – Republic) and diluted earnings per share as noted in the following table (in millions, except per share data). Additionally, see our Results of Operations discussion in this Management's Discussion and Analysis of Financial Condition and Results of Operations for a discussion of other items that impacted our earnings during the three months ended March 31, 2026 and 2025.

Three Months Ended March 31, 2026Three Months Ended March 31, 2025
DilutedDiluted
NetEarningsNetEarnings
Pre-taxTaxIncome -perPre-taxTaxIncome -per
IncomeImpact(1)RepublicShareIncomeImpact(1)RepublicShare
As reported$656$131$525$1.70$665$170$495$1.58
Restructuring charges(2)224130.01
Gain on business divestitures and impairments, net(2)(1)(1)(2)(2)(0.01)
Total adjustments11211
As adjusted$657$131$526$1.70$667$171$496$1.58

(1) The income tax effect related to our adjustments includes both the current and deferred income tax impact and is individually calculated based on the statutory rates applicable to each adjustment.

(2) The aggregate impact to adjusted diluted earnings per share totals to less than $0.01 for the three months ended March 31, 2026.

We believe that presenting adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share, which are not measures determined in accordance with U.S. GAAP, provides an understanding of operational activities before the financial impact of certain items. We use these measures, and believe investors will find them helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate impact on our results for a particular period. We have incurred comparable charges, costs and recoveries in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definitions of adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies. Further information on these adjustments is included below.

Restructuring charges. During the three months ended March 31, 2026 and 2025, we incurred restructuring charges of $2 million and $4 million, respectively. The charges related to the design and implementation of our new accounts receivable system. During the three months ended March 31, 2026 and 2025, we paid $4 million and $3 million, respectively, related to these restructuring efforts.

During the remainder of 2026, we expect to incur additional restructuring charges of approximately $20 million, related primarily to the continuing design and implementation of our new accounts receivable system. Substantially all of these restructuring charges will be recorded in Corporate entities and other.

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Gain on business divestitures and impairments, net. During the three months ended March 31, 2026 and 2025, we recorded a net gain on business divestitures and impairments of $1 million and $2 million, respectively.

Results of Operations

Revenue

We generate revenue by providing environmental services to our customers, including the collection and processing of recyclable materials, the collection, treatment, consolidation, transfer and disposal of hazardous and non-hazardous waste and other environmental solutions. Our residential, small-container and large-container collection operations in some markets are based on long-term contracts with municipalities. Certain of our municipal contracts have annual price escalation clauses that are tied to changes in an underlying base index such as a consumer price index. We generally provide small-container and large-container collection services to customers under contracts with terms up to three years. Our transfer stations and landfills generate revenue from disposal or tipping fees charged to third parties. Our recycling centers generate revenue from tipping fees charged to third parties and the sale of recycled commodities. Our revenue from environmental solutions is primarily generated by (1) fees we charge for the collection, treatment, transfer and disposal of hazardous and non-hazardous waste, (2) field and industrial services, (3) equipment rental, (4) emergency response and standby services, (5) in-plant services, such as transportation and logistics, including at our TSDFs and (6) in-plant services such as high-pressure cleaning, tank cleaning, decontamination, remediation, transportation, spill cleanup and emergency response at refineries, chemical, steel and automotive plants and other governmental, commercial and industrial facilities. Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantiall

[Excerpt truncated for page length; source filing is linked above.]

Latest 10-K MD&A

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2026-02-18. Report date: 2025-12-31.

ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our audited consolidated financial statements and the notes thereto included in Part II, Item 8 of this Annual Report on Form 10-K. This discussion may contain forward-looking statements that anticipate results that are subject to uncertainty. We discuss in more detail various factors that could cause actual results to differ from expectations in Part I, Item 1A, Risk Factors in this Annual Report on Form 10-K.

For further discussion regarding our results of operations for the year ended December 31, 2024 as compared to the year ended December 31, 2023, refer to Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024.

Recent Developments

2026 Financial Guidance

In 2026, we will focus on pricing in excess of cost inflation, driving profitable volume growth, investing in sustainability to improve the environment and drive growth, investing in value-creating acquisitions and advancing technology to improve productivity and increase customer retention. Specific guidance follows:

Revenue

We expect revenue to be in the range of $17.050 billion to $17.150 billion. We expect growth from average yield on total revenue to be in a range of 3.2% to 3.7% and related revenue to be in a range of 4.0% to 4.5%. We expect the impact from volume on total revenue to be approximately (1.0)%.

Adjusted Diluted Earnings per Share

The following is a summary of anticipated adjusted diluted earnings per share for the year ending December 31, 2026 compared to the actual adjusted diluted earnings per share for the year ended December 31, 2025. Adjusted diluted earnings per share is not a measure determined in accordance with U.S. GAAP:

(Anticipated) Year Ending December 31, 2026(Actual) Year Ended December 31, 2025
Diluted earnings per share$7.14 - $7.22$6.85
Restructuring charges0.060.05
Labor disruption0.12
Adjusted diluted earnings per share$7.20 - $7.28$7.02

We believe that the presentation of adjusted diluted earnings per share provides an understanding of operational activities before the financial effect of certain items. We use this measure, and believe investors will find it helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate effect on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definition of adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies.

The guidance set forth above constitutes forward-looking information and is not a guarantee of future performance. The

guidance is based upon the current beliefs and expectations of our management and is subject to significant risk and

uncertainties that could cause actual results to differ materially from those shown above. See Item 1A. Risk Factors - Disclosure Regarding Forward-Looking Statements.

Overview

Republic is one of the largest providers of environmental services in the United States, as measured by revenue. As of December 31, 2025, we operated across the United States and Canada through 377 collection operations, 255 transfer stations, 79 recycling centers, 207 active landfills, 2 treatment, recovery and disposal facilities, 24 treatment, storage and disposal facilities (TSDF), 5 salt water disposal wells, 15 deep injection wells, 9 industrial wastewater treatment facilities, and 2 polymer centers. We are engaged in 84 landfill gas-to-energy and other renewable energy projects and had post-closure responsibility for 124 closed landfills.

Revenue for the year ended December 31, 2025 increased by 3.5% to $16.6 billion compared to $16.0 billion in 2024. This change in revenue is due to increased average yield of 4.1% and acquisitions, net of divestitures of 1.3%, partially offset by decreases in environmental solutions revenue of 1.0%, volume of 0.6%, fuel recovery fees of 0.1% as well as the effect of a decrease in workdays of 0.1%.

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The following table summarizes our revenue, costs and expenses for the years ended December 31, 2025 and 2024 (in millions of dollars and as a percentage of revenue):

20252024
Revenue$16,591100.0%$16,032100.0%
Expenses:
Cost of operations9,63058.09,35058.3
Depreciation, amortization and depletion of property and equipment1,6159.71,5179.5
Amortization of other intangible assets890.6790.5
Amortization of other assets1100.7810.5
Accretion1140.71070.7
Selling, general and administrative1,71010.31,67410.4
Restructuring charges200.1290.2
Gain on business divestitures and impairments, net(1)
Adjustment to withdrawal liability for multiemployer pension funds1
Operating income$3,30219.9%$3,19619.9%

Our pre-tax income was $2.6 billion for the year ended December 31, 2025, compared to $2.4 billion in 2024. Our net income attributable to Republic Services, Inc. was $2.1 billion, or $6.85 per diluted share, for 2025, compared to $2.0 billion, or $6.49 per diluted share, for 2024.

During 2025 and 2024, we recorded a number of charges, other expenses and benefits that impacted our pre-tax income, tax impact, net income attributable to Republic Services, Inc. (net income – Republic) and diluted earnings per share as noted in the following table (in millions, except per share data). Additionally, see our Results of Operations section of this Management's Discussion and Analysis of Financial Condition and Results of Operations for a discussion of other items that impacted our earnings during the years ended December 31, 2025 and 2024. For comparative purposes, prior year amounts have been reclassified to conform to current year presentation.

Year Ended December 31, 2025Year Ended December 31, 2024
Pre-tax IncomeTax Impact(1)Net Income - RepublicDiluted Earnings per SharePre-tax IncomeTax Impact(1)Net Income - RepublicDiluted Earnings per Share
As reported$2,594$455$2,139$6.85$2,432$389$2,043$6.49
Restructuring charges206140.05298210.07
Gain on extinguishment of debt and other related costs, net(6)(2)(4)(0.01)
Labor disruption5618380.12
Gain on certain divestitures and impairments, net(30)(8)(22)(0.07)
Settlements and withdrawals on pension plans(2)11(8)(2)(6)(0.02)
Total adjustments7724530.17(15)(4)(11)(0.03)
As adjusted$2,671$479$2,192$7.02$2,417$385$2,032$6.46

(1) The income tax effect related to our adjustments includes both current and deferred income tax impact and is individually calculated based on the statutory rates applicable to each adjustment.

(2) The aggregate impact to adjusted diluted earnings per share totals to less than $0.01 for the year ended December 31, 2025.

We believe that presenting adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share, which are not measures determined in accordance with U.S. GAAP, provide an understanding of operational activities before the financial impact of certain items. We use these measures, and believe investors will find them helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate impact on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definitions of adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies. Further information on each of these adjustments is included below.

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Restructuring charges. In 2025 and 2024, we incurred restructuring charges of $20 million and $29 million, respectively. The 2025 charges primarily related to the design and implementation of a new accounts receivable system. The 2024 charges primarily related to the redesign of our asset management, and customer and order management software systems. We paid $12 million and $25 million during 2025 and 2024, respectively, related to these restructuring efforts.

In 2026, we expect to incur restructuring charges of approximately $25 million, primarily related to the continuation of the design and implementation of our new accounts receivable system as well as the conversion of the general ledger, budgeting and procurement enterprise resource planning (ERP) systems for our environmental solutions segment.

Gain on extinguishment of debt and other related costs, net. During 2024 we recognized a loss of $2 million due to the amendment and restatement of the Credit Facility, and a net gain of $8 million attributable to the early settlement of certain cash flow hedges related to the Term Loan Facility. The gain was recognized as a reduction of interest expense.

Labor disruption. During 2025, we experienced labor disruptions in certain isolated markets. The impact of these labor disruptions was $56 million, including $16 million of customer credits and $40 million of cost of operations.

Gain on certain divestitures and impairments, net. During 2024, we recorded a net gain on certain divestitures and impairments of $30 million, of which $29 million was due to a gain on the sale of a transfer station facility and $1 million related to a gain on other business divestitures and impairments.

Settlements and withdrawals on pension plans. During 2025, we recorded a charge to earnings of $1 million for a withdrawal event at a multiemployer pension fund to which we contribute. During 2024, we recognized a settlement of our defined benefit pension plan. The settlement included a combination of lump-sum payments to participants who elected to receive them and the transfer of benefit obligations to a third-party insurance company under a group annuity contract. As a result of the settlements, we recognized a non-cash gain of $8 million related to the accelerated recognition of the proportional share of unamortized net actuarial gains in accumulated other comprehensive loss. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

Results of Operations

Revenue

We generate revenue by providing environmental services to our customers, including the collection and processing of recyclable materials, the collection, treatment, consolidation, transfer and disposal of hazardous and non-hazardous waste and other environmental solutions. Our residential, small-container and large-container collection operations in some markets are based on long-term contracts with municipalities. Certain of our municipal contracts have annual price escalation clauses that are tied to changes in an underlying base index such as a consumer price index. We generally provide small-container and large-container collection services to customers under contracts with initial terms up to three years. Our transfer stations and landfills generate revenue from disposal or tipping fees charged to third parties. Our recycling centers generate revenue from tipping fees charged to third parties and the sale of recycled commodities. Our revenue from environmental solutions primarily consists of (1) fees we charge for the collection, treatment, transfer and disposal of hazardous and non-hazardous waste, (2) field and industrial services, (3) equipment rental, (4) emergency response and standby services, (5) in-plant services, such as transportation and logistics, including at our TSDFs and (6) in-plant services such as high-pressure cleaning, tank cleaning, decontamination, remediation, transportation, spill cleanup and emergency response at refineries, chemical, steel and automotive plants and other governmental, commercial and industrial facilities. Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

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The following table reflects our revenue by service line for the years ended December 31, 2025 and 2024 (in millions of dollars and as a percentage of revenue):

20252024
Collection:
Residential$3,01018.1%$2,93918.3%
Small-container5,05530.54,82030.1
Large-container3,09818.73,02418.9
Other700.4720.4
Total collection11,23367.710,85567.7
Transfer1,8331,780
Less: intercompany(985)(975)
Transfer, net8485.18055.0
Landfill3,2022,981
Less: intercompany(1,282)(1,240)
Landfill, net1,92011.61,74110.9
Environmental solutions1,8281,907
Less: intercompany(62)(64)
Environmental solutions, net1,76610.61,84311.5
Other:
Recycling processing and commodity sales4332.64092.5
Other non-core3912.43792.4
Total other8245.07884.9
Total revenue$16,591100.0%$16,032100.0%

The following table reflects changes in components of our revenue, as a percentage of total revenue, for the years ended December 31, 2025 and 2024:

20252024
Average yield4.1%5.1%
Fuel recovery fees(0.1)(0.4)
Total price4.04.7
Volume(0.6)(1.1)
Change in workdays(0.1)0.3
Recycling processing and commodity sales0.5
Environmental solutions(1.0)0.1
Other(1)(0.1)
Total internal growth2.24.5
Acquisitions / divestitures, net1.32.6
Total3.5%7.1%
Core price5.9%6.5%

(1) Other represents customer credits recognized in connection with recent labor disruptions.

Average yield is defined as revenue growth from the change in average price per unit of service, expressed as a percentage. Core price is defined as price increases to our customers and fees, excluding fuel recovery, net of price decreases to retain customers. We also measure changes in average yield, core price and volume as a percentage of related-business revenue, defined as total revenue excluding recycled commodities, fuel recovery fees and environmental solutions revenue to determine the effectiveness of our pricing strategies.

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The following table reflects average yield, core price and volume as a percentage of related-business revenue for the years ended December 31, 2025 and 2024:

Years Ended December 31,
20252024
As a % of Related Business
Average yield4.9%6.2%
Core price7.1%7.8%
Volume(0.7)%(1.3)%

During 2025, we experienced the following changes in our revenue as compared to 2024:

•Average yield increased revenue by 4.1% due to positive pricing changes in all lines of business.

•The fuel recovery fee program, which mitigates our exposure to increases in fuel prices, decreased revenue by 0.1%, primarily due to a decrease in fuel prices compared to 2024.

•Volume decreased revenue by 0.6% during 2025 as compared to 2024 due to a decrease in volume in our collection lines of business as well as a decrease in solid waste volumes in our landfill line of business. The decline in revenue in our large-container collection line of business was primarily driven by slowing in construction-related activity as well as adverse weather in January and February of 2025. The decline in our residential and small-container collection lines of business is primarily attributable to certain municipal contract losses and broker-related business.

The decrease in overall volume as compared to 2024 was partially offset by an increase in construction and demolition and special waste volumes at our landfills. The increase was primarily related to Hurricane Helene recovery efforts and the Los Angeles area wildfire remediation. These events increased revenue during 2025 by approximately $100 million.

•Revenue decreased by 0.1% due to the impact of the number of workdays during 2025 as compared to 2024.

•There was no net change to revenue as a result of recycling processing and commodity sales during 2025. In 2025, volume increased at the Las Vegas Polymer Center. Volume also increased due to the opening of the Indianapolis Polymer Center and reopening of a recycling center on the west coast. This increase was offset by a decrease in overall commodity prices compared to the same period in 2024. The average price for recycled commodities, excluding glass and organics, for 2025 was $135 per ton compared to $164 per ton for 2024.

Changing market demand for recycled commodities causes volatility in commodity prices. At current volumes and mix of materials, we believe a $10 per ton change in the price of recycled commodities will change both annual revenue and operating income by approximately $13 million.

•During 2025, environmental solutions revenue decreased by 1.0% primarily due to a decline in manufacturing and emergency response activity as well as a decrease in event-based volumes into our landfills. In 2024, environmental solutions revenue included approximately $50 million from a non-recurring emergency response project.

•Acquisitions, net of divestitures, increased revenue by 1.3%, reflecting the results of our continued growth strategy of acquiring environmental services companies that complement and expand our existing business platform.

Cost of Operations

Cost of operations includes labor and related benefits, which consists of salaries and wages, health and welfare benefits, incentive compensation and payroll taxes. It also includes transfer and disposal costs representing tipping fees paid to third party disposal facilities and transfer stations; maintenance and repairs relating to our vehicles, equipment and containers, including related labor and benefit costs; transportation and subcontractor costs, which include costs for independent haulers that transport our waste to disposal facilities and costs for local operators that provide waste handling services associated with our National Accounts in markets outside our standard operating areas; fuel, which includes the direct cost of fuel used by our vehicles, net of fuel tax credits; disposal fees and taxes, consisting of landfill taxes, host community fees and royalties; landfill operating costs, which includes financial assurance, leachate disposal, remediation charges and other landfill maintenance costs; risk management costs, which include insurance premiums and claims; and other, which includes expenses such as facility operating costs, equipment rent and gains or losses on the sale of assets used in our operations.

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The following table summarizes the major components of our cost of operations for the years ended December 31, 2025 and 2024 (in millions of dollars and as a percentage of revenue):

20252024
Labor and related benefits$3,30619.9%$3,21320.0%
Transfer and disposal costs1,0746.51,1016.9
Maintenance and repairs1,4959.01,4689.2
Transportation and subcontract costs1,1947.21,2127.6
Fuel4662.84702.9
Disposal fees and taxes3642.23512.2
Landfill operating costs3892.33672.3
Risk management4312.64012.4
Other8715.37965.0
Subtotal9,59057.89,37958.5
Gain on certain divestitures and impairments, net(29)(0.2)
Labor disruption400.2
Total cost of operations$9,63058.0%$9,35058.3%

These cost categories may change from time to time and may not be comparable to similarly titled categories presented by other companies. As such, you should take care when comparing our cost of operations by component to that of other companies and of ours for prior periods.

Our cost of operations increased in aggregate dollars for the year ended December 31, 2025 compared to 2024 as a result of the following:

•Labor and related benefits increased in aggregate dollars primarily due to higher hourly and salaried wages as a result of annual merit increases as well as acquisition related growth.

•Transfer and disposal costs decreased primarily due to a decrease in collection volumes.

During both 2024 and 2025, approximately 67% of the total solid waste volume we collected was disposed at landfill sites that we own or operate (internalization).

•Maintenance and repairs expense increased in aggregate dollars due to higher hourly wages as a result of annual merit increases, parts inflation, an increase in third-party maintenance and acquisition related growth.

•Transportation and subcontract costs decreased primarily due to a decrease in volume in our environmental solutions business.

•Our fuel costs decreased due to a decrease in the average diesel fuel cost per gallon. The national average diesel fuel cost per gallon for 2025 was $3.66 compared to $3.76 for 2024.

At current consumption levels, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel costs by approximately $26 million per year. Offsetting these changes in fuel expense would be changes in our fuel recovery fee charged to our customers. At current participation rates, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel recovery fee by approximately $42 million per year.

•Landfill operating costs increased in aggregate dollars primarily due to an increase in monitoring and maintenance costs on our gas and leachate extraction systems. These increases were partially offset by a decrease in unfavorable remediation adjustments as compared to 2024.

•Risk management expenses increased primarily due to higher premium costs.

•Other costs of operations increased during 2025 due to increased occupancy and facility related expenses, acquisition-related activity and a favorable non-recurring insurance recovery recognized in 2024.

•During 2025, we experienced labor disruptions in certain isolated markets. We incurred $40 million of cost of operations primarily as a result of an increase in labor and other cost of operations.

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Depreciation, Amortization and Depletion of Property and Equipment

The following table summarizes depreciation, amortization and depletion of property and equipment for the years ended December 31, 2025 and 2024 (in millions of dollars and as a percentage of revenue):

20252024
Depreciation and amortization of property and equipment$1,0686.4%$1,0036.3%
Landfill depletion and amortization5473.35143.2
Depreciation, amortization and depletion expense$1,6159.7%$1,5179.5%

Depreciation and amortization of property and equipment increased largely due to an increased investment in trucks and the supporting infrastructure as well as assets added through acquisitions.

Landfill depletion and amortization expense increased in aggregate dollars due to increased construction and demolition volumes related to Hurricane Helene recovery efforts and increased special waste volumes attributable to the Los Angeles area wildfire remediation. Landfill depletion and amortization also increased due to an increase in our overall average depletion rate.

Amortization of Other Intangible Assets

Amortization of other intangible assets primarily relates to customer relationships. Expenses for amortization of other intangible assets were $89 million, or 0.6% of revenue, for the year ended December 31, 2025, compared to $79 million, or 0.5% of revenue, for 2024. Amortization expense increased in aggregate dollars due to additional assets acquired through our acquisition activity.

Amortization of Other Assets

Our other assets primarily relate to the prepayment of fees and capitalized implementation costs associated with cloud-based hosting arrangements. Expenses for amortization of other assets were $110 million, or 0.7% of revenue, for the year ended December 31, 2025, compared to $81 million, or 0.5% of revenue, for 2024.

Accretion Expense

Accretion expense was $114 million, or 0.7% of revenue, and $107 million, or 0.7% of revenue, for the years ended December 31, 2025 and 2024, respectively.

Selling, General and Administrative Expenses

Selling, general and administrative expenses include salaries, health and welfare benefits and incentive compensation for corporate and field general management, field support functions, sales force, accounting and finance, legal, management information systems and clerical and administrative departments. Other expenses include rent and office costs, fees for professional services provided by third parties, legal settlements, marketing, investor and community relations services, directors’ and officers’ insurance, general employee relocation, travel, entertainment and bank charges. Restructuring charges are excluded from selling, general and administrative expenses and are discussed separately.

The following table summarizes our selling, general and administrative expenses for the years ended December 31, 2025 and 2024 (in millions of dollars and as a percentage of revenue):

20252024
Salaries and related benefits$1,1276.8%$1,1297.0%
Provision for doubtful accounts400.2270.2
Other5433.35183.2
Total selling, general and administrative expenses$1,71010.3%$1,67410.4%

These cost categories may change from time to time and may not be comparable to similarly titled categories used by other companies. As such, you should take care when comparing our selling, general and administrative expenses by cost component to those of other companies and of ours for prior periods.

The most significant items affecting our selling, general and administrative expenses during 2025 as compared to 2024 are summarized below:

•Salaries and related benefits decreased primarily due to a decrease in management incentive compensation. This decrease was partially offset by higher wages and benefits resulting from annual merit increases.

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•Other selling, general and administrative expenses increased for the year ended December 31, 2025, largely due to a legal settlement recognized during the period.

Gain on Business Divestitures and Impairments, Net

We strive to have a leading market position in each of the markets we serve, or have a clear path on how we will achieve a leading market position over time. Where we cannot establish a leading market position, or where operations are not generating acceptable returns, we may decide to divest certain assets and reallocate resources to other markets. Business divestitures could result in gains, losses or impairment charges that may be material to our results of operations in a given period.

During the year ended December 31, 2025, we did not record a gain on business divestitures and impairments. During the year ended December 31, 2024, we recorded a gain on business divestitures and impairments of $1 million.

Restructuring Charges

For a discussion of restructuring charges incurred during the years ended December 31, 2025 and 2024, see Overview of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

Interest Expense

The following table provides the components of interest expense, including accretion of debt discounts and accretion of discounts primarily associated with environmental and risk insurance liabilities assumed in acquisitions for the years ended December 31, 2025 and 2024 (in millions of dollars):

20252024
Interest expense on debt$510$479
Non-cash interest7571
Less: capitalized interest(11)(11)
Total interest expense$574$539

Total interest expense for 2025 increased primarily due to a higher overall debt balance as well as higher interest rates on our debt compared to 2024.

Cash paid for interest, excluding net swap settlements for interest rate swaps, was $500 million and $487 million for the years ended December 31, 2025 and 2024, respectively.

As of December 31, 2025, we had $2.6 billion of floating rate debt. If interest rates increased or decreased by 100 basis points on our floating rate debt, annualized interest expense and net cash payments for interest would increase or decrease by approximately $26 million.

Loss on Extinguishment of Debt

During the year ended December 31, 2025, we did not recognize a loss on extinguishment of debt. During the year ended December 31, 2024, we recognized a loss of $2 million due to the amendment and restatement of the Credit Facility.

Adjustment to Withdrawal Liability for Multiemployer Pension Funds

During 2025, we recorded a $1 million charge related to the withdrawal from a certain multiemployer pension plan. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

Income Taxes

Our provision for income taxes was $455 million and $388 million for 2025 and 2024, respectively. Our effective tax rate, exclusive of non-controlling interests, for the years ended December 31, 2025 and 2024 was 17.5% and 16.0%, respectively.

During 2024 and 2025, we acquired non-controlling interests in limited liability companies established to own renewable energy assets that qualified for investment tax credits under Section 48 of the Internal Revenue Code. We account for these investments under the equity method of accounting utilizing the Hypothetical Liquidation at Book Value ("HLBV") method and recognize our share of income or loss and other reductions in the value of our investment in loss from unconsolidated equity method investments within our consolidated statements of income. For further discussion regarding our equity method accounting, see Note 3, Business Acquisitions, Investments and Restructuring Charges, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

On July 4, 2025, the One Big Beautiful Bill Act (the "Act”) was signed into law. The Act, among other things, implemented changes to the tax treatment relating to bonus depreciation, research and experimental expenditures and interest expense, and

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included phase-outs and restrictions on several clean energy tax incentives. We made income tax payments (net of refunds) of $206 million and $313 million for 2025 and 2024, respectively. Income taxes paid in 2025 reflect benefits from the Act as well as tax credits from our continuing investments in qualified renewable energy projects. The Act did not have a material impact on our effective tax rate. The Company is continuing to evaluate the potential impact of the Act on future years' tax positions.

We have deferred tax assets related to state net operating loss carryforwards with an estimated tax effect of $51 million available as of December 31, 2025. These state net operating loss carryforwards expire at various times between 2026 and 2045. We believe that it is more likely than not that the benefit from some of our state net operating loss carryforwards will not be realized due to limitations on these loss carryforwards in certain states. In recognition of this risk, as of December 31, 2025, we have provided a valuation allowance of $40 million.

For additional discussion and detail regarding our income taxes, see Note 11, Income Taxes, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Reportable Segments

Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, referred to as Group 1, Group 2 and Group 3. Group 1 is our recycling and waste business operating primarily in geographic areas located in the western United States. Group 2 is our recycling and waste business operating primarily in geographic areas located in the southeastern and mid-western United States, the eastern seaboard of the United States, and Canada. Group 3 is our environmental solutions business operating in geographic areas located across the United States and Canada. These groups are presented below as our reportable segments, which each provide integrated environmental services, including but not limited to collection, transfer, recycling and disposal.

Corporate functions include marketing, operations support, business development, legal, tax, treasury, information technology, risk management, human resources and other administrative functions. National Accounts revenue included in Corporate entities and other represents the portion of revenue generated from nationwide and regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Revenue and overhead costs of Corporate entities and other are either specifically assigned or allocated on a rational and consistent basis among our reportable segments to calculate adjusted EBITDA.

Our chief operating decision maker (CODM) is Jon Vander Ark, President and Chief Executive Officer of Republic Services, Inc. Adjusted EBITDA is the single financial measure our CODM uses to evaluate segment profitability and returns, which informs resource allocation. For all segments, the CODM uses adjusted EBITDA to evaluate income generated from segment assets (return on invested capital). The CODM considers budget-to-actual variances and year-over-year growth on a monthly basis to assess the performance of each segment. Cost of operations and selling, general and administrative expenses are significant segment expenses used in the evaluation.

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Summarized financial information regarding our reportable segments for the years ended December 31, 2025 and 2024 (in millions of dollars) follows. For totals as well as further detail regarding our reportable segments and the adjustments used to calculate adjusted EBITDA for each segment, see Note 15, Segment Reporting, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Group 1Group 2Recycling & Waste Subtotal(1)Group 3 (Environmental Solutions)Corporate entities and otherTotal
2025
Gross revenue$8,630$8,244$16,874$1,784$369$19,027
Intercompany revenue(1,271)(1,069)(2,340)(48)(48)(2,436)
Revenue allocations15014129130(321)
Net revenue$7,509$7,316$14,825$1,766$$16,591
Cost of operations4,2484,2658,5131,1179,630
Selling, general and administrative7506831,4332771,710
Other segment items(11)(45)(56)(56)
Adjusted EBITDA$2,522$2,413$4,935$372$$5,307
Capital expenditures$876$633$1,509$181$197$1,887
Total assets$14,441$11,616$26,057$5,217$3,092$34,366
Group 1Group 2Recycling & Waste Subtotal(1)Group 3 (Environmental Solutions)Corporate entities and otherTotal
2024
Gross revenue$8,130$8,084$16,214$1,860$344$18,418
Intercompany revenue(1,208)(1,064)(2,272)(49)(65)(2,386)
Revenue allocations12512224732(279)
Net revenue$7,047$7,142$14,189$1,843$$16,032
Cost of operations4,0434,1618,2041,1469,350
Selling, general and administrative7216891,4102641,674
Other segment items292929
Adjusted EBITDA$2,283$2,263$4,546$433$$4,979
Capital expenditures$883$614$1,497$141$217$1,855
Total assets$13,978$11,318$25,296$4,462$2,644$32,402

(1) The Recycling & Waste Subtotal represents the combined results of our Group 1 and Group 2 reportable segments.

Significant changes in the revenue and adjusted EBITDA of our reportable segments for 2025 compared to 2024 are discussed below.

Group 1

Adjusted EBITDA in Group 1 increased from $2.3 billion for the year ended December 31, 2024 to $2.5 billion for the year ended December 31, 2025.

The most significant items impacting adjusted EBITDA in Group 1 during the year ended December 31, 2025 compared to the year ended December 31, 2024 include:

•Net revenue for the year ended December 31, 2025 increased 6.6% from 2024 due to an increase in average yield in all lines of business and higher special waste volumes in our landfill line of business. The increase in special waste volumes was primarily driven by the Los Angeles area wildfire remediation. The increases were partially offset by decreased volume in our large-container and residential collection lines of business. The decrease in volume was also negatively impacted by lower solid waste and construction and demolition volumes in our landfill line of business.

•Cost of operations increased primarily due to an increase in labor costs, equipment maintenance and insurance premiums.

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Group 2

Adjusted EBITDA in Group 2 increased from $2.3 billion for the year ended December 31, 2024 to $2.4 billion for the year ended December 31, 2025.

The most significant items impacting adjusted EBITDA in Group 2 during the year ended December 31, 2025 compared to the year ended December 31, 2024 include:

•Net revenue for the year ended December 31, 2025 increased 2.4% from 2024 due to an increase in average yield in all lines of business and increased volume in our landfill line of business. The increase in volume in our landfill line of business was primarily due to increased construction and demolition volume related to the Hurricane Helene recovery efforts as well as increased special waste volumes. These increases were partially offset by decreased volumes in our collection and transfer lines of business.

•Cost of operations increased due to an increase in our insurance premiums and landfill operating costs.

Group 3

Adjusted EBITDA in Group 3 decreased from $433 million for the year ended December 31, 2024 to $372 million for the year ended December 31, 2025.

The most significant items impacting adjusted EBITDA in Group 3 during the year ended December 31, 2025 compared to the year ended December 31, 2024 include:

•Net revenue for the year ended December 31, 2025 decreased due to a decline in manufacturing and emergency response activity as well as a decrease in event-based volumes into our landfills, partially offset by acquisition related growth and price increases relative to 2024.

•Cost of operations decreased primarily due to a decrease in volumes and subcontract costs partially offset by higher labor costs relative to 2024.

Landfill and Environmental Matters

Our landfill costs include daily operating expenses, costs of capital for cell development, costs for final capping, closure and post-closure and the legal and administrative costs of ongoing environmental compliance. Daily operating expenses include leachate treatment, transportation and disposal costs, methane gas and groundwater monitoring and system maintenance costs, interim cap maintenance costs and costs associated with applying daily cover materials. We expense all indirect landfill development costs as they are incurred. We use life cycle accounting and the units-of-consumption method to recognize certain direct landfill costs related to landfill development. In life cycle accounting, certain direct costs are capitalized and charged to depletion expense based on the consumption of cubic yards of available airspace. These costs include all costs to acquire and construct a site, including excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection and monitoring systems, installation of groundwater monitoring wells and other costs associated with acquiring and developing the site. Obligations associated with final capping, closure and post-closure are capitalized and amortized on a units-of-consumption basis as airspace is consumed.

Cost and airspace estimates are developed at least annually by engineers. Our operating and accounting personnel use these estimates to adjust the rates we use to expense capitalized costs. Changes in these estimates primarily relate to changes in cost estimates, available airspace, inflation and applicable regulations. Changes in available airspace include changes in engineering estimates, changes in design and changes due to the addition of airspace lying in expansion areas that we believe have a probable likelihood of being permitted. Changes in engineering estimates typically include modifications to the available disposal capacity of a landfill based on a refinement of the capacity calculations resulting from updated information.

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Available Airspace

As of December 31, 2025, we owned or operated 207 active landfills with total available disposal capacity estimated to be 5 billion in-place cubic yards. For these landfills, the following table reflects changes in capacity and remaining capacity, as measured in cubic yards of airspace, as of December 31, 2025.

Balance as of December 31, 2024New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2025
Cubic yards (in millions):
Permitted airspace4,74571145(86)(3)4,872
Probable expansion airspace28215(142)155
Total cubic yards (in millions)5,02715713(86)(3)5,027
Number of sites:
Permitted airspace2082(3)207
Probable expansion airspace141(3)12

The following table reflects changes in capacity and remaining capacity for these landfills, as measured in cubic yards of airspace, as of December 31, 2024.

Balance as of December 31, 2023New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2024
Cubic yards (in millions):
Permitted airspace4,8217(87)44,745
Probable expansion airspace2834(5)282
Total cubic yards (in millions)5,10442(87)45,027
Number of sites:
Permitted airspace2071208
Probable expansion airspace141(1)14

Total available disposal capacity represents the sum of estimated permitted airspace plus an estimate of probable expansion airspace. Engineers develop these estimates at least annually using information provided by annual aerial surveys. Before airspace included in an expansion area is determined to be probable expansion airspace and, therefore, included in our calculation of total available disposal capacity, it must meet all of our expansion criteria. See Note 2, Summary of Significant Accounting Policies, and Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K for further information. Also see our Critical Accounting Judgments and Estimates section of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

As of December 31, 2025, 12 of our landfills met all of our criteria for including their probable expansion airspace in their total available disposal capacity. At projected annual volumes, these 12 landfills have an estimated remaining average site life of 32 years, including probable expansion airspace. The average estimated remaining life of all of our landfills is 56 years. We have other expansion opportunities that are not included in our total available airspace because they do not meet all of our criteria for treatment as probable expansion airspace.

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The following table reflects the estimated operating lives of our active landfill sites based on available and probable disposal capacity using current annual volumes as of December 31, 2025:

Number of Sites without Probable Expansion AirspaceNumber of Sites with Probable Expansion AirspaceTotal SitesPercent of Total
0 to 5 years212110%
6 to 10 years2412512
11 to 20 years3633919
21 to 40 years4544924
41+ years6947335
Total19512207100%

Final Capping, Closure and Post-Closure Costs

As of December 31, 2025, accrued final capping, closure and post-closure costs were $2,313 million, of which $87 million were current and $2,226 million were long-term as reflected in our consolidated balance sheets in accrued landfill and environmental costs included in Part II, Item 8 of this Annual Report on Form 10-K.

Remediation and Other Charges for Landfill Matters

It is reasonably possible that we will need to adjust our accrued landfill and environmental liabilities to reflect the effects of new or additional information, to the extent that such information impacts the costs, timing or duration of the required actions. Future changes in our estimates of the costs, timing or duration of the required actions could have a material adverse effect on our consolidated financial position, results of operations and cash flows.

For a description of our significant remediation matters, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Investment in Landfills

As of December 31, 2025, we expect to spend an estimated additional $13 billion on existing landfills, primarily related to cell construction and environmental structures, over their remaining lives. Our total expected investment, excluding non-depletable land, estimated to be $18.2 billion, or $3.62 per cubic yard, is used in determining our depletion and amortization expense based on airspace consumed using the units-of-consumption method.

The following table reflects our future expected investment as of December 31, 2025 (in millions):

Balance as of December 31, 2025Expected Future InvestmentTotal Expected Investment
Non-depletable landfill land$212$$212
Landfill development costs11,33513,12624,461
Construction-in-progress – landfill326326
Accumulated depletion and amortization(6,578)(6,578)
Net investment in landfill land and development costs$5,295$13,126$18,421

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The following table reflects our net investment in our landfills, excluding non-depletable land, and our depletion, amortization and accretion expense for the years ended December 31, 2025 and 2024:

20252024
Number of landfills owned or operated207208
Net investment, excluding non-depletable land (in millions)$5,083$4,924
Total estimated available disposal capacity (in millions of cubic yards)5,0275,027
Net investment per cubic yard$1.01$0.98
Landfill depletion and amortization expense (in millions)$547$514
Accretion expense (in millions)114107
661621
Airspace consumed (in millions of cubic yards)8687
Depletion, amortization and accretion expense per cubic yard of airspace consumed$7.69$7.14

During 2025 and 2024, our average compaction rate was approximately 2,000 pounds per cubic yard based primarily on a three-year historical moving average.

Property and Equipment

The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2025 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2024Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2025
Land$897$34$(2)$38$$$49$1,016
Landfill development costs10,5182137735063611,335
Vehicles and equipment10,998781(457)6340011,785
Buildings and improvements2,11926(4)513862,578
Construction-in-progress - landfill437524(635)326
Construction-in-progress - other5756786(836)423
Total$25,544$2,064$(463)$195$73$50$$27,463
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2024Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2025
Landfill development costs$(6,031)$(544)$$$(3)$$(6,578)
Vehicles and equipment(6,692)(956)44845(7,191)
Buildings and improvements(944)(114)32(2)(1,055)
Total$(13,667)$(1,614)$451$6$(3)$3$(14,824)

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The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2024 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2023Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2024
Land$878$5$(3)$18$$$(1)$897
Landfill development costs9,91156619044510,518
Vehicles and equipment10,232848(357)427110,998
Buildings and improvements1,92244(5)181402,119
Construction-in-progress - landfill350494(407)437
Construction-in-progress - other5544981(478)575
Total$23,847$1,894$(364)$46$61$90$(30)$25,544
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2023Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2024
Landfill development costs$(5,516)$(501)$$$(13)$(1)$(6,031)
Vehicles and equipment(6,148)(897)34517(6,692)
Buildings and improvements(832)(111)3(4)(944)
Total$(12,496)$(1,509)$348$1$(13)$2$(13,667)

Liquidity and Capital Resources

Cash and Cash Equivalents

The following is a summary of our cash and cash equivalents and restricted cash and marketable securities balances as of December 31:

20252024
Cash and cash equivalents$76$74
Restricted cash and marketable securities259208
Less: restricted marketable securities(86)(79)
Cash, cash equivalents, restricted cash and restricted cash equivalents$249$203

Our restricted cash and marketable securities include amounts pledged to regulatory agencies and governmental entities as financial guarantees of our performance under certain collection, landfill and transfer station contracts and permits, and relating to our final capping, closure and post-closure obligations at our landfills as well as restricted cash and marketable securities related to our insurance obligations.

The following table summarizes our restricted cash and marketable securities as of December 31:

20252024
Capping, closure and post-closure obligations$67$59
Insurance192149
Total restricted cash and marketable securities$259$208

Material Cash Requirements and Intended Uses of Cash

We expect existing cash, cash equivalents, restricted cash and marketable securities, cash flows from operations and financing activities to continue to be sufficient to fund our operating activities and cash commitments for investing and financing activities for at least the next 12 months and thereafter for the foreseeable future. Our known current- and long-term uses of cash include, among other possible demands: (1) capital expenditures and leases, (2) acquisitions, (3) dividend payments, (4)

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payments to service debt and other long-term obligations, (5) payments for asset retirement obligations and environmental liabilities and (6) share repurchases.

We may choose to voluntarily retire certain portions of our outstanding debt before their maturity dates using cash from operations or additional borrowings. We may also explore opportunities in the capital markets to fund redemptions of our debt should market conditions be favorable. Early extinguishment of debt will result in a loss in the period in which the debt is repaid. The loss on early extinguishment of debt relates to premiums paid to effectuate the repurchase and the relative portion of unamortized note discounts and debt issuance costs.

Capital Expenditures and Leases

We make investments in property and equipment primarily to allow for growth of our service offerings. These investments are largely concentrated in vehicles and equipment and costs to construct our landfills. We expect to receive between $1.96 billion to $2.00 billion of property and equipment, net of proceeds from the sale of property and equipment, in 2026.

We lease property and equipment in the ordinary course of business under various lease agreements. The most significant lease obligations are for real property and equipment specific to our industry, including property operated as a landfill or transfer station and operating equipment. As of December 31, 2025, the amount of total future lease payments under operating and finance leases was $248 million and $485 million, respectively. For additional detail regarding our lease obligations, see Note 10, Leases, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Acquisitions

Our acquisition growth strategy focuses primarily on acquiring privately held recycling and waste companies and environmental solutions businesses that complement our existing business platform. We continue to invest in value-enhancing acquisitions in existing markets.

We expect to invest approximately $1 billion in acquisitions in 2026.

Dividend Payments

In October 2025 our Board of Directors approved a quarterly dividend of $0.625 per share. Aggregate cash dividends declared were $749 million for the year ended December 31, 2025. As of December 31, 2025, we recorded a quarterly dividend payable of $193 million to shareholders of record at the close of business on January 2, 2026, which was paid on January 15, 2026.

Debt and other long-term obligations

Debt repayments may include purchases of our outstanding indebtedness in the secondary market or otherwise. We believe that our excess cash, cash from operating activities and our availability to draw on our credit facilities provide us with sufficient financial resources to meet our anticipated capital requirements and maturing obligations as they come due.

We may choose to voluntarily retire certain portions of our outstanding debt before their maturity dates using cash from operations or additional borrowings. We may also explore opportunities in the capital markets to fund redemptions of our debt should market conditions be favorable. Early extinguishment of debt will result in an impairment charge in the period in which the debt is repaid. The loss on early extinguishment of debt relates to premiums paid to effectuate the repurchase and the relative portion of unamortized note discounts and debt issue costs.

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion, and in October 2023, was increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of December 31, 2025 was 4.044%. In the event of a failed re-borrowing, we currently have availability under our Credit Facility (as defined below) to fund the amounts borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2025.

As of December 31, 2025, the total principal value of our debt was $13.7 billion, of which $596 million is due in 2026.

We have several agreements that require us to dispose of a minimum number of tons at third-party disposal facilities. Under these put-or-pay agreements, we must pay for agreed-upon minimum volumes regardless of the actual number of tons placed at the facilities.

Our unconditional purchase commitments have varying expiration dates, with some extending through the remaining life of the respective landfill. Future minimum payments under unconditional purchase commitments consist primarily of (1) disposal related agreements, which include fixed or minimum royalty payments, host agreements and take-or-pay and put-or-pay agreements and (2) other obligations including committed capital expenditures and consulting service agreements. As of December 31, 2025, such purchase commitments, which do not qualify for recognition on our Consolidated Balance Sheets, amount to $944 million, of which $196 million was short-term.

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For additional detail regarding our debt and known contractual and other obligations, see Note 9, Debt, and Note 18, Commitments and Contingencies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Asset Retirement Obligations and Environmental Liabilities

We have future obligations for final capping, closure and post-closure costs with respect to the landfills we own or operate as set forth in applicable landfill permits. As of December 31, 2025, our future obligations for final capping, closure and post-closure costs totaled $2.3 billion, of which $87 million was short-term.

Additionally, we are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. As of December 31, 2025, our environmental liabilities totaled $443 million, of which $61 million was short-term.

For additional detail regarding our asset retirement obligations and environmental liabilities, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Share Repurchases

In October 2023, our Board of Directors approved a $3 billion share repurchase authorization effective starting January 1, 2024 and extending through December 31, 2026. Share repurchases under the current program may be made through open market purchases or privately negotiated transactions in accordance with applicable federal securities laws. While the Board of Directors has approved the program, the timing of any purchases, the prices and the number of shares of common stock to be purchased will be determined by our management, at its discretion, and will depend upon market conditions and other factors. The share repurchase program may be extended, suspended or discontinued at any time. As of December 31, 2025, the remaining authorized purchase capacity under our October 2023 repurchase program was $1.7 billion.

Summary of Cash Flow Activity

The major components of changes in cash flows for 2025 and 2024 are discussed in the following paragraphs. The following table summarizes our cash flow from operating activities, investing activities and financing activities for the years ended December 31, 2025 and 2024 (in millions of dollars):

20252024
Net cash provided by operating activities$4,296$3,936
Net cash used in investing activities$(3,313)$(2,561)
Net cash used in financing activities$(938)$(1,398)

Cash Flows Provided by Operating Activities

The most significant items affecting the comparison of our operating cash flows for 2025 and 2024 are summarized below.

Changes in assets and liabilities, net of effects from business acquisitions and divestitures, decreased our cash flow from operations by $359 million in 2025, compared to a decrease of $378 million during the same period in 2024, primarily as a result of the following:

•Our accounts receivable, exclusive of the change in allowance for doubtful accounts and customer credits, increased $87 million during 2025, due to the timing of billings net of collections, compared to a $76 million increase in the same period in 2024. As of December 31, 2025, our days sales outstanding were 41.8, or 30.8 days net of deferred revenue, compared to 40.9, or 30.0 days net of deferred revenue, as of December 31, 2024.

•Our prepaid expenses and other assets increased $174 million in 2025 compared to a $171 million increase in 2024. The increase in prepaid expenses and other assets during 2025 is primarily driven by an increase in costs associated with cloud-based hosting arrangements and prepaid insurance premiums.

•Our accounts payable decreased $14 million during 2025 compared to a $27 million decrease during 2024, due to the timing of payments.

•Cash paid for capping, closure and post-closure obligations was $70 million during 2025 compared to $56 million for 2024. The increase in cash paid for capping, closure and post-closure obligations is primarily due to the timing of capping and post-closure payments at certain of our landfill sites.

•Cash paid for remediation obligations was $8 million lower during 2025 compared to 2024.

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•Our other liabilities increased $40 million during 2025 compared to a $14 million increase during 2024, primarily due to the timing of payments for accrued legal settlements and an increase in insurance reserves, partially offset by a decrease in management incentive compensation.

In addition, cash paid for interest was $500 million and $487 million, excluding net swap settlements for our fixed to floating interest rate swaps, for 2025 and 2024, respectively. Cash paid for income taxes was $206 million and $313 million for 2025 and 2024, respectively.

We use cash flows from operations to fund capital expenditures, acquisitions, dividend payments, debt repayments and share repurchases.

Cash Flows Used in Investing Activities

The most significant items affecting the comparison of our cash flows used in investing activities for 2025 and 2024 are summarized below:

•Capital expenditures during both 2025 and 2024 were $1.9 billion.

•During 2025 and 2024, we used $1.4 billion and $753 million, respectively, for acquisitions and investments, net of cash acquired.

We intend to finance capital expenditures and acquisitions through cash on hand, restricted cash held for capital expenditures, cash flows from operations, our revolving credit facilities and tax-exempt bonds and other financings. We expect to primarily use cash and borrowings under our revolving credit facilities to pay for future acquisitions.

Cash Flows Used in Financing Activities

The most significant items affecting the comparison of our cash flows used in financing activities for 2025 and 2024 are summarized below:

•During 2025, we issued $1,200 million of senior notes for cash proceeds, net of discounts and fees, of $1,183 million. During 2024, we issued $900 million of senior notes for cash proceeds, net of discounts and fees, of $889 million. Net payments of notes payable and long-term debt were $491 million during 2025, compared to net payments of $1,089 million in 2024. For a more detailed discussion, see the Financial Condition section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

•During 2025, we repurchased 3.8 million shares of our common stock for $864 million, which included the cash paid for excise tax on share repurchases, compared to repurchases of 2.5 million shares for $480 million during 2024.

•In July 2025, our Board of Directors approved an increase in our quarterly dividend to $0.625 per share. Dividends paid were $738 million and $687 million in 2025 and 2024, respectively.

Financial Condition

Debt Obligations

As of December 31, 2025, we had $596 million of principal debt maturing within the next 12 months, which includes certain finance lease obligations. All of our tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield, with the exception of three tax-exempt financings with initial remarketing periods of 10 years. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agent is unable to remarket our bonds, the remarketing agent can put the bonds to us. In the event of a failed remarketing, as of December 31, 2025, we had availability under our Credit Facility (defined below) to fund these bonds until they are remarketed successfully. In the event of a failed re-borrowing under our commercial paper program, as of December 31, 2025, we had availability under our Credit Facility to fund the amounts borrowed under the commercial paper program until it is re-borrowed successfully. Accordingly, we have classified these tax-exempt financings and commercial paper program borrowings as long-term in our consolidated balance sheet as of December 31, 2025.

For further discussion of the components of our overall debt, see Note 9, Debt, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Credit Facilities

Uncommitted Credit Facility

In January 2022, we entered into a $200 million unsecured uncommitted revolving credit facility (the Uncommitted Credit Facility). The Uncommitted Credit Facility bears interest at an annual percentage rate to be agreed upon by both parties. Borrowings under the Uncommitted Credit Facility can be used for working capital, letters of credit and other general corporate purposes. The agreement governing our Uncommitted Credit Facility requires us to comply with certain covenants. The Uncommitted Credit Facility may be terminated by either party at any time. As of December 31, 2025 and 2024, we had no borrowings outstanding under our Uncommitted Credit Facility.

The Credit Facility

In July 2024, we and our subsidiary, USE Canada Holdings, Inc. (the Canadian Borrower) entered into the Second Amended and Restated Credit Agreement (the Credit Facility) which amended and restated the unsecured revolving credit facility we entered into in August 2021. The total outstanding principal amount that we may borrow under the Credit Facility may not exceed the current aggregate lenders' commitments of $3.5 billion, and borrowings under the Credit Facility mature in July 2029. As permitted by the Credit Facility, we have the right to request two one-year extensions of the maturity date, but none of the lenders are committed to participate in such extensions. The Credit Facility also includes a feature that allows us to increase availability, at our option, by an aggregate amount of up to $1.0 billion through increased commitments from existing lenders or the addition of new lenders.

All loans to the Canadian Borrower and all loans denominated in Canadian dollars cannot exceed $1.0 billion (the Canadian Sublimit). The Canadian Sublimit is part of, and not in addition to, the aggregate commitments under the Credit Facility.

Borrowings under the Credit Facility in United States dollars bear interest at a Base Rate, a daily floating SOFR or a term SOFR plus a current applicable margin of 0.805% based on our Debt Ratings (all as defined in the Credit Facility agreement). The Canadian dollar-denominated loans bear interest based on the Canadian Prime Rate or the Canadian Dollar Offered Rate plus a current applicable margin of 0.805% based on our Debt Ratings. As of December 31, 2025 and 2024, C$204 million and C$232 million, respectively, were outstanding against the Canadian Sublimit.

The Credit Facility is subject to facility fees based on applicable rates defined in the Credit Facility agreement and the aggregate commitment, regardless of usage. The Credit Facility can be used for working capital, capital expenditures, acquisitions, letters of credit and other general corporate purposes. The Credit Facility agreement requires us to comply with financial and other covenants. We may pay dividends and repurchase common stock if we are in compliance with these covenants.

We had $425 million and $514 million outstanding under the Credit Facility as of December 31, 2025 and 2024, respectively. We had $319 million and $317 million of letters of credit outstanding under the Credit Facility as of December 31, 2025 and 2024, respectively. We also had $1.0 billion and $477 million of principal borrowings outstanding under our commercial paper program as of December 31, 2025 and 2024, respectively. As a result, availability under the Credit Facility was $1.8 billion and $2.2 billion as of December 31, 2025 and 2024, respectively.

Credit Facility Financial and Other Covenants

The Credit Facility requires us to comply with financial and other covenants. To the extent we are not in compliance with these covenants, we cannot pay dividends or repurchase common stock. Compliance with covenants also is a condition for any incremental borrowings under the Credit Facility, and failure to meet these covenants would enable the lenders to require repayment of any outstanding loans (which would adversely affect our liquidity). Additionally, if we are not in compliance with these covenants, we could not use the availability under our Credit Facility to fund borrowings we currently make under our commercial paper program, if there is a failed reborrowing under that program. The Credit Facility provides that our total debt to EBITDA ratio may not exceed 3.75 to 1.00 as of the last day of any fiscal quarter. In the case of an "elevated ratio period", which may be elected by us if one or more acquisitions during a fiscal quarter involve aggregate consideration in excess of $200.0 million (the Trigger Quarter), the total debt to EBITDA ratio may not exceed 4.25 to 1.00 during the Trigger Quarter and for the three fiscal quarters thereafter. The Credit Facility also provides that there may not be more than two elevated ratio periods during the term of the Credit Facility agreement. As of December 31, 2025, our total debt to EBITDA ratio was approximately 2.6 compared to the 3.75 maximum allowed. As of December 31, 2025, we were in compliance with all other covenants under our Credit Facility.

EBITDA, which is a non-U.S. GAAP measure, is calculated as defined in our Credit Facility agreement. In this context, EBITDA is used solely to provide information regarding the extent to which we are in compliance with debt covenants and is not comparable to EBITDA used by other companies or used by us for other purposes.

Failure to comply with the financial and other covenants under the Credit Facility, as well as the occurrence of certain material adverse events, would constitute defaults and would allow the lenders under the Credit Facility to accelerate the maturity of all

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indebtedness under the Credit Facility. This could have an adverse effect on the availability of financial assurances. In addition, maturity acceleration on the Credit Facility constitutes an event of default under certain of our other debt and derivative instruments. If such acceleration were to occur, we would not have sufficient liquidity available to repay the indebtedness. We would likely have to seek an amendment under the Credit Facility for relief from the financial covenant or repay the debt with proceeds from the issuance of new debt or equity, or asset sales, if necessary. We may be unable to amend the Credit Facility or raise sufficient capital to repay such obligations in the event the maturity is accelerated.

Commercial Paper Program

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion, and in October 2023, was increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of December 31, 2025 was 4.044%. The weighted average interest rate for borrowings outstanding as of December 31, 2024 was 4.646%.

We had $1.0 billion and $477 million principal value of commercial paper issued and outstanding under the program as of December 31, 2025 and 2024, respectively. In the event of a failed re-borrowing, we currently have availability under our Credit Facility to fund amounts currently borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2025 and 2024, respectively.

Senior Notes and Debentures

In June 2024, we issued $400 million of 5.000% senior notes due 2029 and $500 million of 5.200% senior notes due 2034. We used the proceeds from the June 2024 notes issuance for general corporate purposes, including the repayment of a portion of amounts outstanding under the Commercial Paper Program and the Credit Facility; and repayment of all amounts then outstanding under the Uncommitted Credit Facility and certain other debt obligations.

In March 2025, we issued $500 million of 4.750% senior notes due 2030 and $700 million of 5.150% senior notes due 2035. We used the proceeds from the March 2025 notes issuance for general corporate purposes, including the repayment of a portion of amounts outstanding on our Credit Facility and a portion of outstanding borrowings under the Commercial Paper Program.

Our senior notes and debentures are general unsecured and unsubordinated obligations and rank equally with our other unsecured obligations.

Tax-Exempt Financings

As of both December 31, 2025 and December 31, 2024 we had $1.4 billion of tax-exempt financings outstanding with maturities ranging from 2026 to 2054 for both periods.

In June 2024, the Mission Economic Development Corporation issued, for our benefit, $50 million in principal amount of Solid Waste Disposal Revenue Bonds. The proceeds from the issuance, after deferred issuance costs, were used to fund the acquisition, construction, improvement, installation, and/or equipping of certain solid waste disposal facilities located within Texas.

In March 2024, the California Municipal Finance Authority issued, for our benefit, $100 million in principal amount of Solid Waste Disposal Revenue Bonds. The proceeds from the issuance, after deferred issuance costs, were used to fund the acquisition, construction, improvement, installation, and/or equipping of certain solid waste disposal facilities located within California.

We have $250 million of tax-exempt financings that have an initial remarketing period of 10 years. Our remaining tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agents are unable to remarket our bonds, the remarketing agents can put the bonds to us. In the event of a failed remarketing, we currently have availability under our Credit Facility to fund these bonds until they are remarketed successfully. Accordingly, we classified these borrowings as long-term in our consolidated balance sheets as of December 31, 2025 and December 31, 2024.

Finance Leases and Other

As of December 31, 2025, we had finance lease liabilities and other debt obligations of $441 million with maturities ranging from 2026 to 2063. As of December 31, 2024, we had finance lease liabilities and other debt obligations of $315 million with maturities ranging from 2025 to 2063.

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In our consolidated balance sheet as of December 31, 2025, finance leases and other included $148 million related to construction costs for our corporate office building located in Phoenix, Arizona, which has been accounted for as a financing obligation. The amount is recorded within long-term debt, net of current maturities.

Credit Ratings

Our continued access to the debt capital markets and to new financing facilities, as well as our borrowing costs, depend on multiple factors, including market conditions, our operating performance and maintaining strong credit ratings. As of December 31, 2025, our credit ratings were A- by Standard & Poor’s Ratings Services, A- by Fitch Ratings, Inc. and A3 by Moody’s Investors Service, Inc. If our credit ratings were downgraded, especially any downgrade to below investment grade, our ability to access the debt markets with the same flexibility that we have experienced historically, our cost of funds and other terms for new debt issuances could be adversely impacted.

Off-Balance Sheet Arrangements

We have no off-balance sheet debt or similar obligations, other than short-term operating leases and financial assurances, which are not classified as debt. We have no transactions or obligations with related parties that are not disclosed, consolidated into or reflected in our reported financial position or results of operations. We have not guaranteed any third-party debt.

Seasonality and Severe Weather

Our operations can be adversely affected by periods of inclement or severe weather, which could increase the volume of waste collected under our existing contracts (without corresponding compensation), delay the collection and disposal of waste, reduce the volume of waste delivered to our disposal sites, or delay the construction or expansion of our landfills and other facilities. Our operations also can be favorably affected by severe weather, which could increase the volume of waste in situations where we are able to charge for our additional services.

Contingencies

For a description of our commitments and contingencies, see Note 8, Landfill and Environmental Costs, Note 11, Income Taxes and Note 18, Commitments and Contingencies, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Financial Assurance

We must provide financial assurance to governmental agencies and a variety of other entities under applicable environmental regulations relating to our landfill operations for capping, closure and post-closure costs, and related to our performance under certain collection, landfill and transfer station contracts. We satisfy these financial assurance requirements by providing surety bonds, letters of credit, or insurance policies (Financial Assurance Instruments), or trust deposits, which are included in restricted cash and marketable securities and other assets in our consolidated balance sheets. The amount of the financial assurance requirements for capping, closure and post-closure costs is determined by applicable state environmental regulations. The financial assurance requirements for capping, closure and post-closure costs may be associated with a portion of the landfill or the entire landfill. Generally, states require a third-party engineering specialist to determine the estimated capping, closure and post-closure costs that are used to determine the required amount of financial assurance for a landfill. The amount of financial assurance required can, and generally will, differ from the obligation determined and recorded under U.S. GAAP. The amount of the financial assurance requirements related to contract performance varies by contract. Additionally, we must provide financial assurance for our insurance program and collateral for certain performance obligations. We do not expect a material increase in financial assurance requirements during 2026, although the mix of Financial Assurance Instruments may change.

These Financial Assurance Instruments are issued in the normal course of business and are not classified as indebtedness. Because we currently have no liability for the Financial Assurance Instruments, they are not reflected in our consolidated balance sheets; however, we record capping, closure and post-closure liabilities and insurance liabilities as they are incurred.

Critical Accounting Judgments and Estimates

Our consolidated financial statements have been prepared in accordance with U.S. GAAP and necessarily include certain estimates and judgments made by management. The following is a list of accounting policies that we believe are the most critical in understanding our consolidated financial position, results of operations and cash flows and that may require management to make subjective or complex judgments about matters that are inherently uncertain. Our critical accounting estimates are those estimates that involve a significant level of uncertainty at the time the estimate was made, and changes in them have had or are reasonably likely to have a material effect on our financial condition or results of operations. Accordingly, actual results could differ materially from our estimates. We base our estimates on past experience and other assumptions that

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we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Such critical accounting policies, estimates and judgments are applicable to all of our operating segments.

We have noted examples of the estimates that are subject to uncertainty in the accounting for these areas below.

Landfill Development Asset Depletion

Landfill depletion expense for the years ended December 31, 2025 and 2024 was $433 million and $408 million, respectively.

To match the expense related to the landfill asset with the revenue generated by the landfill operations, we amortize the landfill development asset over its operating life on a per-ton basis as waste is accepted at the landfill. The landfill asset is fully depleted at the end of a landfill’s operating life. The per-ton rate is calculated by dividing the sum of the landfill development asset net book value plus estimated future development costs for the landfill, by the landfill’s estimated remaining permitted and probable disposal capacity. The expected future development costs are not inflated or discounted, but rather expressed in nominal dollars. This rate is applied to each ton accepted at the landfill to arrive at depletion expense for the period.

The calculation of depletion expense includes certain estimates and assumptions around future landfill development costs and remaining permitted and probable landfill disposal capacity. Changes in these estimates are subject to uncertainty attributable to the following factors: (i) actual future costs of construction materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor, and (ii) technical designs could be altered due to unexpected operating conditions, regulatory changes or legislative changes.

On at least an annual basis, we update the estimates of future development costs and remaining disposal capacity for each landfill. These costs and disposal capacity estimates are reviewed and approved by senior operations management annually. Changes in cost estimates and disposal capacity are reflected prospectively in the landfill depletion rates that are updated annually.

Landfill Asset Retirement Obligations

We have two types of retirement obligations related to landfills: (1) capping and (2) closure and post-closure. As of December 31, 2025 and 2024, our asset retirement obligations related to capping, closure and post-closure were $2.3 billion and $2.1 billion, respectively. Changes in these estimates may be sensitive to the following factors: (i) changes to environmental laws and regulations and/or circumstances affecting our operations could result in a significant change to our estimates, which could have a significant impact on our result of operations, (ii) we do not expect to incur most of these costs for a number of years, which requires us to estimate the timing of projected cash flows and make assumptions regarding inflation rates, and (iii) actual future costs of materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor.

Obligations associated with final capping activities that occur during the operating life of the landfill are recognized on a units-of-consumption basis as airspace is consumed within each discrete capping event. Obligations related to closure and post-closure activities that occur after the landfill has ceased operations are recognized on a units-of-consumption basis as airspace is consumed throughout the entire life of the landfill. Landfill retirement obligations are capitalized as the related liabilities are recognized and amortized using the units-of-consumption method over the airspace consumed within the capping event or the airspace consumed within the entire landfill, depending on the nature of the obligation. Landfill amortization expense for the years ended December 31, 2025 and 2024 was $114 million and $106 million, respectively. All obligations are initially measured at estimated fair value. Fair value is calculated on a present value basis using an inflation rate and our credit-adjusted, risk-free rate in effect at the time the liabilities were incurred. Future costs for final capping, closure and post-closure are developed at least annually by engineers, and are inflated to future value using estimated future payment dates and inflation rate projections.

Landfill capping. As individual areas within each landfill reach capacity, we must cap and close the areas in accordance with the landfill site permit. These requirements are detailed in each landfill's technical design, which is reviewed and approved by the regulatory agency issuing the landfill site permit.

Closure and post-closure. Closure costs are costs incurred after a landfill stops receiving waste, but prior to being certified as closed. After the entire landfill has reached capacity and is certified closed, we must continue to maintain and monitor the site for a post-closure period, which generally extends for 30 years. Costs associated with closure and post-closure requirements generally include maintenance of the site, the monitoring of methane gas collection systems and groundwater systems and other activities that occur after the site has ceased accepting waste. Costs associated with post-closure monitoring generally include groundwater sampling, analysis and statistical reports, third-party labor associated with gas system operations and maintenance and transportation and disposal of leachate.

Landfill retirement obligation liabilities and assets. Estimates of the total future costs required to cap, close and monitor each landfill as specified by the landfill permit are updated annually. The estimates include inflation, the specific timing of future

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cash outflows and the anticipated waste flow into the capping events. Our cost estimates are inflated to the period of performance using an estimated inflation rate, which is updated annually. For the years ended December 31, 2025 and 2024, our estimated inflation rate of 2.0% was based on the twenty year average core consumer price index.

The present value of the remaining capping costs for specific capping events and the remaining closure and post-closure costs for each landfill are recorded as incurred on a per-ton basis. These liabilities are incurred as disposal capacity is consumed at the landfill.

Retirement obligations are increased each year to reflect the passage of time by accreting the balance at the weighted average credit-adjusted risk-free rate that was used to calculate each layer of the recorded liabilities. This accretion is charged to operating expenses. Actual cash expenditures reduce the asset retirement obligation liabilities as they are made.

Corresponding retirement obligation assets are recorded for the same value as the additions to the capping, closure and post-closure liabilities. The retirement obligation assets are amortized to expense on a per-ton basis as disposal capacity is consumed. The per-ton rate is calculated by dividing the sum of each of the recorded retirement obligation asset’s net book value and expected future additions to the retirement obligation asset by the remaining disposal capacity. A per-ton rate is determined for each separate capping event based on the disposal capacity relating to that event. Closure and post-closure per-ton rates are based on the total disposal capacity of the landfill.

Changes in these estimates may be sensitive to the following factors: (i) changes to environmental laws and regulations and/or circumstances affecting our operations could result in a significant change to our estimates, which could have a significant impact on our result of operations, (ii) we do not expect to incur most of these costs for a number of years, which requires us to estimate the timing of projected cash flows and make assumptions regarding inflation rates, and (iii) actual future costs of materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor.

On an annual basis, we update our estimates of future capping, closure and post-closure costs and of future disposal capacity for each landfill. Revisions in estimates of our costs or timing of expenditures are recognized immediately as increases or decreases to the capping, closure and post-closure liabilities and the corresponding retirement obligation assets. Changes in the assets result in changes to the amortization rates which are applied prospectively, except for fully incurred capping events and closed landfills, where the changes are recorded immediately in results of operations since the associated disposal capacity has already been consumed.

Total landfill depletion and amortization expense for the years ended December 31, 2025 and 2024 was $547 million and $514 million, respectively. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Environmental Liabilities

We are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Under current laws and regulations, we may be responsible for environmental remediation at sites that we either own or operate, including sites that we have acquired, or sites where we have (or a company that we have acquired has) delivered waste. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration. To estimate our ultimate liability at these sites, we evaluate several factors, including the nature and extent of contamination at each identified site, the required remediation methods, timing of expenditures, the apportionment of responsibility among the potentially responsible parties and the financial viability of those parties.

We accrue for costs associated with environmental remediation obligations when such costs are probable and reasonably estimable in accordance with accounting for loss contingencies. We periodically review the status of all environmental matters and update our estimates of the likelihood of and future expenditures for remediation as necessary. Changes in the liabilities resulting from these reviews are recognized currently in earnings in the period in which the adjustment is known. Adjustments to estimates are reasonably possible in the near term and may result in changes to recorded amounts. With the exception of those obligations assumed in certain business combinations, environmental obligations are recorded on an undiscounted basis. Environmental obligations assumed in certain business combinations are initially estimated on a discounted basis, and accreted to full value over time through charges to interest expense. Adjustments arising from changes in amounts and timing of estimated costs and settlements may result in increases or decreases in these obligations and are calculated on a discounted basis as they were initially estimated on a discounted basis. These adjustments are charged to operating income when they are known. We perform a comprehensive review of our environmental obligations annually and also review changes in facts and circumstances associated with these obligations at least quarterly. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on our remediation adjustments. We have not reduced the liabilities we have recorded for recoveries from other potentially responsible parties or insurance companies.

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As of December 31, 2025 and 2024, we had $443 million and $447 million of environmental liabilities, respectively. Changes in these estimates may be sensitive to changes in cost estimates, timing of estimated costs and settlements, inflation and applicable regulations. Our estimates of these liabilities require assumptions about uncertain future events, which may change the ultimate amounts of our environmental remediation liabilities. Thus, our estimates could change substantially as additional information becomes available regarding the nature or extent of contamination, the required remediation methods, timing of expenditures, the final apportionment of responsibility among the potentially responsible parties identified, the financial viability of those parties and the actions of governmental agencies or private parties with interests in the matter. The actual environmental costs may exceed our current and future accruals for these costs, and any adjustments could be material.

New Accounting Standards

For a description of new accounting standards that may affect us, see Note 2, Summary of Significant Accounting Policies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

MD&A history

Prior-year 10-K MD&A spans are extracted from SEC filings with the same bounded parser used for the latest filing. The latest 10-K appears above; prior years are below.

FY 2024 10-K MD&A

SEC filing source: 0001060391-25-000091.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2025-02-14. Report date: 2024-12-31.

ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our audited consolidated financial statements and the notes thereto included in Part II, Item 8 of this Annual Report on Form 10-K. This discussion may contain forward-looking statements that anticipate results that are subject to uncertainty. We discuss in more detail various factors that could cause actual results to differ from expectations in Part I, Item 1A, Risk Factors in this Annual Report on Form 10-K.

For further discussion regarding our results of operations for the year ended December 31, 2023 as compared to the year ended December 31, 2022, refer to Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023.

Recent Developments

2025 Financial Guidance

In 2025, we will focus on pricing in excess of cost inflation, driving profitable volume growth, investing in sustainability to improve the environment and drive growth, investing in value-creating acquisitions and advancing technology to improve productivity and increase customer retention. Specific guidance follows:

Revenue

We expect revenue to be in the range of $16.850 billion to $16.950 billion. We expect growth from average yield on total revenue to be approximately 4% and related revenue to be approximately 5%. We expect the impact from volume on total revenue to be in a range of (0.25%) to 0.25%.

Adjusted Diluted Earnings per Share

The following is a summary of anticipated adjusted diluted earnings per share for the year ending December 31, 2025 compared to the actual adjusted diluted earnings per share for the year ended December 31, 2024. Adjusted diluted earnings per share is not a measure determined in accordance with U.S. GAAP:

(Anticipated) Year Ending December 31, 2025(Actual) Year Ended December 31, 2024
Diluted earnings per share6.79 - 6.87$6.49
Restructuring charges0.030.07
Gain on business divestitures and impairments, net(0.07)
Adjustment to withdrawal liability for multiemployer pension funds(0.02)
Loss on extinguishment of debt and other related costs(0.01)
Adjusted diluted earnings per share6.82 - 6.90$6.46

We believe that the presentation of adjusted diluted earnings per share provides an understanding of operational activities before the financial effect of certain items. We use this measure, and believe investors will find it helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate effect on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definition of adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies.

The guidance set forth above constitutes forward-looking information and is not a guarantee of future performance. The

guidance is based upon the current beliefs and expectations of our management and is subject to significant risk and

uncertainties that could cause actual results to differ materially from those shown above. See Item 1A. Risk Factors - Disclosure Regarding Forward-Looking Statements.

Overview

Republic is one of the largest providers of environmental services in the United States, as measured by revenue. As of December 31, 2024, we operated across the United States and Canada through 367 collection operations, 248 transfer stations, 75 recycling centers, 208 active landfills, 2 treatment, recovery and disposal facilities, 23 treatment, storage and disposal facilities (TSDF), 5 salt water disposal wells, 14 deep injection wells and 1 polymer center. We are engaged in 79 landfill gas-to-energy and other renewable energy projects and had post-closure responsibility for 125 closed landfills.

Revenue for the year ended December 31, 2024 increased by 7.1% to $16,032 million compared to $14,965 million in 2023. This change in revenue is due to increased average yield of 5.1%, acquisitions, net of divestitures of 2.6%, recycling processing

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and commodity sales of 0.5%, change in workdays of 0.3% and environmental solutions revenue of 0.1%, partially offset by decreased volume of 1.1% and fuel recovery fees of 0.4%.

The following table summarizes our revenue, costs and expenses for the years ended December 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue):

20242023
Revenue$16,032100.0%$14,965100.0%
Expenses:
Cost of operations9,35058.38,94359.8
Depreciation, amortization and depletion of property and equipment1,5179.51,3689.1
Amortization of other intangible assets790.5660.4
Amortization of other assets810.5670.5
Accretion1070.7980.7
Selling, general and administrative1,67410.41,60910.8
Adjustment to withdrawal liability for multiemployer pension funds5
Gain on business divestitures and impairments, net(1)(4)
Restructuring charges290.2330.2
Operating income$3,19619.9%$2,78018.5%

Our pre-tax income was $2,432 million for the year ended December 31, 2024, compared to $2,191 million in 2023. Our net income attributable to Republic Services, Inc. was $2,043 million, or $6.49 per diluted share, for 2024, compared to $1,731 million, or $5.47 per diluted share, for 2023.

During 2024 and 2023, we recorded a number of charges, other expenses and benefits that impacted our pre-tax income, tax impact, net income attributable to Republic Services, Inc. (net income – Republic) and diluted earnings per share as noted in the following table (in millions, except per share data). Additionally, see our Results of Operations section of this Management's Discussion and Analysis of Financial Condition and Results of Operations for a discussion of other items that impacted our earnings during the years ended December 31, 2024 and 2023. For comparative purposes, prior year amounts have been reclassified to conform to current year presentation.

Year Ended December 31, 2024Year Ended December 31, 2023
Pre-tax IncomeTax Impact(1)Net Income - RepublicDiluted Earnings per SharePre-tax IncomeTax Impact(1)Net Income - RepublicDiluted Earnings per Share
As reported$2,432$389$2,043$6.49$2,191$460$1,731$5.47
Restructuring charges298210.07338250.08
Gain on extinguishment of debt and other related costs, net(6)(2)(4)(0.01)
Gain on certain divestitures and impairments, net(30)(8)(22)(0.07)(4)5(9)(0.03)
Settlements and withdrawals on pension plans(8)(2)(6)(0.02)5230.01
US Ecology, Inc. acquisition integration and deal costs349250.08
Total adjustments(15)(4)(11)(0.03)6824440.14
As adjusted$2,417$385$2,032$6.46$2,259$484$1,775$5.61

(1) The income tax effect related to our adjustments includes both current and deferred income tax impact and is individually calculated based on the statutory rates applicable to each adjustment.

We believe that presenting adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share, which are not measures determined in accordance with U.S. GAAP, provide an understanding of operational activities before the financial impact of certain items. We use these measures, and believe investors will find them helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate impact on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definitions of adjusted pre-tax income, adjusted tax impact,

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adjusted net income – Republic, and adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies. Further information on each of these adjustments is included below.

Restructuring charges. In 2024 and 2023, we incurred restructuring charges of $29 million and $33 million, respectively. The 2024 charges primarily related to the redesign of our asset management, and customer and order management software systems. Of the 2023 charges, $9 million related to the early termination of certain leases and $24 million related to the redesign of our asset management, and customer and order management software systems. We paid $25 million and $39 million during 2024 and 2023, respectively, related to these restructuring efforts.

In 2025, we expect to incur restructuring charges of approximately $15 million, primarily related to the design and implementation of a new accounts receivable system. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

Gain on extinguishment of debt and other related costs, net. During 2024, we recognized a loss of $2 million due to the amendment and restatement of the Credit Facility. Additionally, we recorded a net gain of $8 million attributable to the early settlement of certain cash flow hedges related to the Term Loan Facility. The gain was recognized as a reduction of interest expense. During 2023,we incurred a loss on the early extinguishment of debt related to the early repayment of a portion of our Term Loan Facility. We incurred non-cash charges related to the proportional share of unamortized deferred issuance costs of less than $1 million.

Gain on certain divestitures and impairments, net. During 2024, we recorded a net gain on certain divestitures and impairments of $30 million, of which $29 million was due to a gain on the sale of a transfer station facility and $1 million related to a gain on business divestitures and impairments. During 2023, we recorded a net gain of $4 million related to business divestitures and impairments.

Settlements and withdrawals on pension plans. During 2024, we recognized a settlement of our defined benefit pension plan. The settlement included a combination of lump-sum payments to participants who elected to receive them and the transfer of benefit obligations to a third-party insurance company under a group annuity contract. As a result of the settlements, we recognized a non-cash gain of $8 million related to the accelerated recognition of the proportional share of unamortized net actuarial gains in accumulated other comprehensive loss. During 2023, we recorded a charge to earnings of $5 million for a withdrawal event at multiemployer pension funds to which we contribute.

US Ecology, Inc. acquisition integration and deal costs. In 2023, we incurred acquisition integration and deal costs of $34 million in connection with the acquisition of US Ecology, which included certain costs to integrate the business. The acquisition closed on May 2, 2022, and our integration of the business was substantially complete as of December 31, 2023.

Results of Operations

Revenue

We generate revenue by providing environmental services to our customers, including the collection and processing of recyclable materials, the collection, treatment, consolidation, transfer and disposal of hazardous and non-hazardous waste and other environmental solutions. Our residential, small-container and large-container collection operations in some markets are based on long-term contracts with municipalities. Certain of our municipal contracts have annual price escalation clauses that are tied to changes in an underlying base index such as a consumer price index. We generally provide small-container and large-container collection services to customers under contracts with terms up to three years. Our transfer stations and landfills generate revenue from disposal or tipping fees charged to third parties. Our recycling centers generate revenue from tipping fees charged to third parties and the sale of recycled commodities. Our revenue from environmental solutions primarily consists of (1) fees we charge for the collection, treatment, transfer and disposal of hazardous and non-hazardous waste, (2) field and industrial services, (3) equipment rental, (4) emergency response and standby services, (5) in-plant services, such as transportation and logistics, including at our TSDFs and (6) in-plant services such as high-pressure cleaning, tank cleaning, decontamination, remediation, transportation, spill cleanup and emergency response at refineries, chemical, steel and automotive plants and other governmental, commercial and industrial facilities. Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

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The following table reflects our revenue by service line for the years ended December 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue):

20242023
Collection:
Residential$2,93918.3%$2,82318.9%
Small-container4,82030.14,43929.7
Large-container3,02418.92,92219.5
Other720.4690.4
Total collection10,85567.710,25368.5
Transfer1,7801,699
Less: intercompany(975)(933)
Transfer, net8055.07665.1
Landfill2,9812,885
Less: intercompany(1,240)(1,206)
Landfill, net1,74110.91,67911.2
Environmental solutions1,9071,701
Less: intercompany(64)(76)
Environmental solutions, net1,84311.51,62510.9
Other:
Recycling processing and commodity sales4092.53122.1
Other non-core3792.43302.2
Total other7884.96424.3
Total revenue$16,032100.0%$14,965100.0%

The following table reflects changes in components of our revenue, as a percentage of total revenue, for the years ended December 31, 2024 and 2023:

20242023
Average yield5.1%6.1%
Fuel recovery fees(0.4)(0.2)
Total price4.75.9
Volume(1.1)0.5
Change in workdays0.3
Recycling processing and commodity sales0.5(0.5)
Environmental solutions0.10.1
Total internal growth4.56.0
Acquisitions / divestitures, net2.64.8
Total7.1%10.8%
Core price6.5%7.4%

Average yield is defined as revenue growth from the change in average price per unit of service, expressed as a percentage. Core price is defined as price increases to our customers and fees, excluding fuel recovery, net of price decreases to retain customers. We also measure changes in average yield and core price as a percentage of related-business revenue, defined as total revenue excluding recycled commodities, fuel recovery fees and environmental solutions revenue to determine the effectiveness of our pricing strategies.

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The following table reflects average yield, core price and volume as a percentage of related-business revenue for the years ended December 31, 2024 and 2023:

Years Ended December 31,
20242023
As a % of Related Business
Average yield6.2%7.3%
Core price7.8%8.9%
Volume(1.3)%0.7%

During 2024, we experienced the following changes in our revenue as compared to 2023:

•Average yield increased revenue by 5.1% due to positive pricing changes in all lines of business.

•The fuel recovery fee program, which mitigates our exposure to increases in fuel prices, decreased revenue by 0.4%, primarily due to a decrease in fuel prices compared to 2023.

•Volume decreased revenue by 1.1% during 2024 as compared to 2023 primarily driven by a decrease in volume in our large container collection line of business, primarily driven by a slowing in construction-related activity. Additionally, we experienced declines in our residential, small-container and transfer lines of business primarily attributable to certain municipal contract losses and broker-related business.

•Revenue increased by 0.3% due to the impact of the number of workdays during 2024 as compared to 2023, which drove an increase in volume across all lines of business.

•Recycling processing and commodity sales increased revenue by 0.5% primarily due to an increase in overall commodity prices as compared to 2023. The average price for recycled commodities, excluding glass and organics, for 2024 was $164 per ton compared to $117 per ton for 2023.

Changing market demand for recycled commodities causes volatility in commodity prices. At current volumes and mix of materials, we believe a $10 per ton change in the price of recycled commodities will change both annual revenue and operating income by approximately $11 million.

•During 2024, environmental solutions revenue increased by 0.1% primarily due to an increase in event-based volumes and price increases relative to the same period in 2023.

•Acquisitions, net of divestitures, increased revenue by 2.6%, reflecting the results of our continued growth strategy of acquiring environmental services companies that complement and expand our existing business platform.

Cost of Operations

Cost of operations includes labor and related benefits, which consists of salaries and wages, health and welfare benefits, incentive compensation and payroll taxes. It also includes transfer and disposal costs representing tipping fees paid to third party disposal facilities and transfer stations; maintenance and repairs relating to our vehicles, equipment and containers, including related labor and benefit costs; transportation and subcontractor costs, which include costs for independent haulers that transport our waste to disposal facilities and costs for local operators that provide waste handling services associated with our National Accounts in markets outside our standard operating areas; fuel, which includes the direct cost of fuel used by our vehicles, net of fuel tax credits; disposal fees and taxes, consisting of landfill taxes, host community fees and royalties; landfill operating costs, which includes financial assurance, leachate disposal, remediation charges and other landfill maintenance costs; risk management costs, which include insurance premiums and claims; and other, which includes expenses such as facility operating costs, equipment rent and gains or losses on the sale of assets used in our operations.

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The following table summarizes the major components of our cost of operations for the years ended December 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue):

20242023
Labor and related benefits$3,21320.0%$2,99420.0%
Transfer and disposal costs1,1016.91,0557.1
Maintenance and repairs1,4689.21,3889.3
Transportation and subcontract costs1,2127.61,1717.8
Fuel4702.95423.6
Disposal fees and taxes3512.23482.3
Landfill operating costs3672.33352.2
Risk management4012.43852.6
Other7965.57254.9
Subtotal9,37959.08,94359.8
Gain on certain divestitures and impairments, net(29)(0.7)
Total cost of operations$9,35058.3%$8,94359.8%

These cost categories may change from time to time and may not be comparable to similarly titled categories presented by other companies. As such, you should take care when comparing our cost of operations by component to that of other companies and of ours for prior periods.

Our cost of operations increased in aggregate dollars for the year ended December 31, 2024 compared to the same period in 2023 as a result of the following:

•Labor and related benefits increased in aggregate dollars due to higher hourly and salaried wages as a result of annual merit increases. Acquisition-related growth also contributed to the increase in labor and related benefits.

•Transfer and disposal costs increased in aggregate dollars primarily due to acquisition-related growth and higher disposal rates.

During 2024 approximately 67% of the total solid waste volume we collected was disposed at landfill sites that we own or operate (internalization), as compared to 68% in 2023.

•Maintenance and repairs expense increased in aggregate dollars due to higher hourly wages as a result of annual merit increases, parts inflation and an increase in third-party maintenance. Acquisition-related growth also contributed to the increase in maintenance and repairs expense.

•Transportation and subcontract costs increased in aggregate dollars due to an increase in transportation rates. Acquisition-related growth also contributed to the increase in transportation and subcontract costs.

•Our fuel costs decreased due to a decrease in the average diesel fuel cost per gallon. The national average diesel fuel cost per gallon for 2024 was $3.76 compared to $4.21 for 2023.

At current consumption levels, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel costs by approximately $27 million per year. Offsetting these changes in fuel expense would be changes in our fuel recovery fee charged to our customers. At current participation rates, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel recovery fee by approximately $38 million per year.

•Disposal fees and taxes increased in aggregate dollars in 2024 primarily due to increased royalties and host fees from an increase in volume at certain landfills as compared to 2023.

•Landfill operating costs increased during 2024 primarily due to increased leachate transportation and maintenance on our gas extraction systems due in part to increased rainfall in select geographic regions, as well as an increase in remediation adjustments recorded during 2024.

•Risk management expenses increased in aggregate dollars primarily due to higher premium costs as well as unfavorable claims development in our auto liability program, partially offset by favorable claims development in our general and worker's compensation liability programs.

•Other costs of operations increased in aggregate dollars during 2024 due to increased occupancy and facility related expenses as well as acquisition-related activity. These increases were partially offset by a favorable non-recurring insurance recovery related to a prior year claim.

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Depreciation, Amortization and Depletion of Property and Equipment

The following table summarizes depreciation, amortization and depletion of property and equipment for the years ended December 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue):

20242023
Depreciation and amortization of property and equipment$1,0036.3%$8976.0%
Landfill depletion and amortization5143.24713.1
Depreciation, amortization and depletion expense$1,5179.5%$1,3689.1%

Depreciation and amortization of property and equipment increased primarily due to assets added through acquisitions.

Landfill depletion and amortization expense increased in aggregate dollars due to an increase in our overall average depletion rate.

Amortization of Other Intangible Assets

Amortization of other intangible assets primarily relates to customer relationships and, to a lesser extent, non-compete agreements. Expenses for amortization of other intangible assets were $79 million, or 0.5% of revenue, for the year ended December 31, 2024, compared to $66 million, or 0.4% of revenue, for 2023. Amortization expense increased due to additional assets acquired as a result of our business acquisitions.

Amortization of Other Assets

Our other assets primarily relate to the prepayment of fees and capitalized implementation costs associated with cloud-based hosting arrangements. Expenses for amortization of other assets were $81 million, or 0.5% of revenue, for the year ended December 31, 2024, compared to $67 million, or 0.5% of revenue, for 2023.

Accretion Expense

Accretion expense was $107 million, or 0.7% of revenue, and $98 million, or 0.7% of revenue, for the years ended December 31, 2024 and 2023, respectively.

Selling, General and Administrative Expenses

Selling, general and administrative expenses include salaries, health and welfare benefits and incentive compensation for corporate and field general management, field support functions, sales force, accounting and finance, legal, management information systems and clerical and administrative departments. Other expenses include rent and office costs, fees for professional services provided by third parties, legal settlements, marketing, investor and community relations services, directors’ and officers’ insurance, general employee relocation, travel, entertainment and bank charges. Restructuring charges are excluded from selling, general and administrative expenses and are discussed separately.

The following table summarizes our selling, general and administrative expenses for the years ended December 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue):

20242023
Salaries and related benefits$1,1297.0%$1,0507.0%
Provision for doubtful accounts270.2530.4
Other5183.24723.1
Subtotal1,67410.41,57510.5
US Ecology, Inc. acquisition integration and deal costs340.2
Total selling, general and administrative expenses$1,67410.4%$1,60910.7%

These cost categories may change from time to time and may not be comparable to similarly titled categories used by other companies. As such, you should take care when comparing our selling, general and administrative expenses by cost component to those of other companies and of ours for prior periods.

The most significant items affecting our selling, general and administrative expenses during 2024 as compared to 2023 are summarized below:

•Salaries and related benefits increased in aggregate dollars primarily due to higher wages and benefits resulting from annual merit increases as well as higher management incentive expense as a result of outperforming our annual incentive metrics. Acquisition-related growth also contributed to the growth in salaries and related benefits.

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•Provision for doubtful accounts decreased primarily due to improvements in our cash collections and days sales outstanding as well as favorable adjustments to reserves established in a prior year. As of December 31, 2024, our days sales outstanding were 40.9, or 30.0 days net of deferred revenue, compared to 42.0, or 30.9 days net of deferred revenue, as of December 31, 2023.

•Other selling, general and administrative expenses increased for the year ended December 31, 2024, largely due to an increase in meeting and travel costs, consulting costs and acquisition-related growth, partially offset by a favorable legal settlement.

•During the year ended December 31, 2023 we incurred $34 million of acquisition integration and deal costs with the acquisition of US Ecology, primarily related to the integration of certain software systems as well as rebranding of the business. Our integration of the business was substantially complete as of December 31, 2023.

Gain on Business Divestitures and Impairments, Net

We strive to have a leading market position in each of the markets we serve, or have a clear path on how we will achieve a leading market position over time. Where we cannot establish a leading market position, or where operations are not generating acceptable returns, we may decide to divest certain assets and reallocate resources to other markets. Business divestitures could result in gains, losses or impairment charges that may be material to our results of operations in a given period.

During the years ended December 31, 2024 and 2023, we recorded a net gain on business divestitures and impairments of $1 million and $4 million, respectively.

Restructuring Charges

For a discussion or restructuring charges incurred during the years ended December 31, 2024 and 2023 see Overview of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

Interest Expense

The following table provides the components of interest expense, including accretion of debt discounts and accretion of discounts primarily associated with environmental and risk insurance liabilities assumed in acquisitions for the years ended December 31, 2024 and 2023 (in millions of dollars):

20242023
Interest expense on debt$479$430
Non-cash interest7186
Less: capitalized interest(11)(8)
Total interest expense$539$508

Total interest expense for 2024 increased compared to 2023 primarily due to higher interest rates on our fixed rate debt. The increase attributable to our fixed rate debt is primarily due to the issuance of senior notes in 2024 with coupons ranging from 5.000% to 5.200%, the proceeds of which were used to repay outstanding senior notes with a coupon of 2.500%. This increase was partially offset by a gain of $8 million recognized in 2024 attributable to the early settlement of certain cash flow hedges related to the Term Loan Facility. The gain was recognized as a reduction of non-cash interest expense.

Cash paid for interest, excluding net swap settlements for our fixed-to-floating and floating-to-fixed interest rate swaps, was $487 million and $423 million for the years ended December 31, 2024 and 2023, respectively.

As of December 31, 2024, we had $2,160 million of floating rate debt including floating rate swap contracts. If interest rates increased or decreased by 100 basis points on our variable rate debt, annualized interest expense and net cash payments for interest would increase or decrease by approximately $22 million.

Loss on Extinguishment of Debt

During the year ended December 31, 2024, we recognized a loss of $2 million due to the amendment and restatement of the Credit Facility. During the year ended December 31, 2023, we incurred a loss on the early extinguishment of debt due to the early repayment of a portion of our Term Loan Facility. We incurred non-cash charges related to the proportional share of unamortized deferred issuance costs of less than $1 million.

Adjustment to Withdrawal Liability for Multiemployer Pension Funds

During 2023, we recorded a $5 million charge related to the withdrawal from a certain multiemployer pension plan. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

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Income Taxes

Our provision for income taxes was $388 million and $460 million for 2024 and 2023, respectively. Our effective tax rate, exclusive of non-controlling interests, for the years ended December 31, 2024 and 2023 was 16% and 21%, respectively. Net cash paid for income taxes was approximately $313 million and $343 million for the years ended December 31, 2024 and 2023, respectively.

During 2024, we acquired non-controlling interests in limited liability companies established to own renewable energy assets that qualified for investment tax credits under Section 48 of the Internal Revenue Code. We account for these investments using the equity method of accounting and recognize our share of income or loss and other reductions in the value of our investment in loss from unconsolidated equity method investments within our consolidated statements of income. For further discussion regarding our equity method accounting, see Note 3, Business Acquisitions, Investments and Restructuring Charges. Our 2024 tax provision reflects a benefit of $222 million due to the tax credits related to these investments.

We also made qualified investments in renewable natural gas and commercial electric vehicles during 2024 which, due to tax credits, reduced our tax provision by approximately $18 million.

Our 2023 tax provision was reduced by $87 million related to the tax credits from our non-controlling interests in limited liability companies established to own renewable energy assets.

In addition, during 2023 we resolved IRS examinations for our tax years 2014 - 2018 that, in the aggregate, reduced our tax provision by approximately $21 million.

We have deferred tax assets related to state net operating loss carryforwards with an estimated tax effect of $50 million available as of December 31, 2024. These state net operating loss carryforwards expire at various times between 2025 and 2044. We believe that it is more likely than not that the benefit from some of our state net operating loss carryforwards will not be realized due to limitations on these loss carryforwards in certain states. In recognition of this risk, as of December 31, 2024, we have provided a valuation allowance of $45 million.

For additional discussion and detail regarding our income taxes, see Note 11, Income Taxes, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Reportable Segments

Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, referred to as Group 1, Group 2 and Group 3. Group 1 is our recycling and waste business operating primarily in geographic areas located in the western United States. Group 2 is our recycling and waste business operating primarily in geographic areas located in the southeastern and mid-western United States, the eastern seaboard of the United States, and Canada. Group 3 is our environmental solutions business operating primarily in geographic areas located across the United States and Canada. These groups are presented below as our reportable segments, which each provide integrated environmental services, including but not limited to collection, transfer, recycling and disposal.

Corporate entities and other include marketing, operations support, business development, legal, tax, treasury, information technology, risk management, human resources and other administrative functions. National Accounts revenue included in Corporate entities and other represents the portion of revenue generated from nationwide and regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations. Revenue and overhead costs of Corporate entities and other are either specifically assigned or allocated on a rational and consistent basis among our reportable segments to calculate adjusted EBITDA by reportable segment.

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Adjusted EBITDA is the single financial measure our chief operating decision maker (CODM) uses to evaluate operating segment profitability and determine resource allocations. Cost of operations and selling, general and administrative are significant segment expenses used in the evaluation. Summarized financial information regarding our reportable segments for the years ended December 31, 2024 and 2023 (in millions of dollars) follows. For totals as well as further detail regarding our reportable segments and the adjustments used to calculate adjusted EBITDA for each segment, see Note 15, Segment Reporting, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Group 1Group 2Recycling & Waste Subtotal (1)Group 3 (Environmental Solutions)Corporate entities and otherTotal
2024
Gross Revenue$8,332$7,891$16,223$1,864$331$18,418
Intercompany Revenue(1,235)(1,037)(2,272)(49)(65)(2,386)
Revenue Allocations12311523828(266)
Net Revenue$7,220$6,969$14,189$1,843$$16,032
Cost of Operations4,1294,0798,2081,1429,350
SG&A7386711,4092651,674
Other Segment Items292929
Adjusted EBITDA$2,353$2,190$4,543$436$$4,979
Capital Expenditures$874$574$1,448$136$271$1,855
Total Assets$14,250$11,046$25,296$4,459$2,647$32,402
Group 1Group 2Recycling & Waste Subtotal(1)Group 3 (Environmental Solutions)Corporate entities and otherTotal
2023
Gross Revenue$7,769$7,566$15,335$1,701$243$17,279
Intercompany Revenue(1,171)(1,011)(2,182)(56)(76)(2,314)
Revenue Allocations9691187(20)(167)
Net Revenue$6,694$6,646$13,340$1,625$$14,965
Cost of Operations3,8784,0337,9111,0328,943
SG&A6816491,3302791,609
Other Segment Items(34)(34)
Adjusted EBITDA$2,135$1,964$4,099$348$$4,447
Capital Expenditures$707$542$1,249$145$237$1,631
Total Assets$13,665$10,988$24,653$4,471$2,286$31,410

(1) The Recycling & Waste Subtotal represents the combined results of our Group 1 and Group 2 reportable segments.

Significant changes in the revenue and Adjusted EBITDA of our reportable segments for 2024 compared to 2023 are discussed below.

Group 1

Adjusted EBITDA in Group 1 increased from $2,135 million for the year ended December 31, 2023 to $2,353 million for the year ended December 31, 2024.

The most significant items impacting adjusted EBITDA in Group 1 during the year ended December 31, 2024 compared to the year ended December 31, 2023 include:

•Net revenue for the year ended December 31, 2024 increased 7.9% from 2023 due to an increase in average yield in all lines of business partially offset by volume declines in our large container collection and landfill lines of business.

•Cost of operations increased due to an increase in labor and third party maintenance costs due to inflationary pressures. The unfavorable impact was partially offset by decreases in fuel costs due to a decrease in average fuel cost per gallon.

•Total assets increased primarily due to additions in property and equipment.

Group 2

Adjusted EBITDA in Group 2 increased from $1,964 million for the year ended December 31, 2023 to $2,190 million for the

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year ended December 31, 2024.

The most significant items impacting adjusted EBITDA in Group 2 during the year ended December 31, 2024 compared to the year ended December 31, 2023 include:

•Net revenue for the year ended December 31, 2024 increased 4.9% from 2023 due to an increase in average yield in all lines of business and increased volume in our landfill line of business. These increases were partially offset by decreased volume in our collection and transfer lines of business.

•Cost of operations increased due to an increase in labor and maintenance costs due to inflationary pressures. The unfavorable impact was partially offset by decreases in fuel costs due to a decrease in average fuel cost per gallon.

Group 3

Adjusted EBITDA in Group 3 increased from $348 million for the year ended December 31, 2023 to $436 million for the year ended December 31, 2024.

The most significant items impacting adjusted EBITDA in Group 3 during the year ended December 31, 2024 compared to the year ended December 31, 2023 include:

•Net revenue for the year ended December 31, 2024 increased due to acquisition-related growth, favorable pricing, and an increase in event-based volumes.

•Cost of operations increased primarily due to an increase in labor costs and the impact of acquisitions.

Landfill and Environmental Matters

Our landfill costs include daily operating expenses, costs of capital for cell development, costs for final capping, closure and post-closure and the legal and administrative costs of ongoing environmental compliance. Daily operating expenses include leachate treatment, transportation and disposal costs, methane gas and groundwater monitoring and system maintenance costs, interim cap maintenance costs and costs associated with applying daily cover materials. We expense all indirect landfill development costs as they are incurred. We use life cycle accounting and the units-of-consumption method to recognize certain direct landfill costs related to landfill development. In life cycle accounting, certain direct costs are capitalized and charged to depletion expense based on the consumption of cubic yards of available airspace. These costs include all costs to acquire and construct a site, including excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection and monitoring systems, installation of groundwater monitoring wells and other costs associated with acquiring and developing the site. Obligations associated with final capping, closure and post-closure are capitalized and amortized on a units-of-consumption basis as airspace is consumed.

Cost and airspace estimates are developed at least annually by engineers. Our operating and accounting personnel use these estimates to adjust the rates we use to expense capitalized costs. Changes in these estimates primarily relate to changes in cost estimates, available airspace, inflation and applicable regulations. Changes in available airspace include changes in engineering estimates, changes in design and changes due to the addition of airspace lying in expansion areas that we believe have a probable likelihood of being permitted. Changes in engineering estimates typically include modifications to the available disposal capacity of a landfill based on a refinement of the capacity calculations resulting from updated information.

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Available Airspace

As of December 31, 2024, we owned or operated 208 active landfills with total available disposal capacity estimated to be 5 billion in-place cubic yards. For these landfills, the following table reflects changes in capacity and remaining capacity, as measured in cubic yards of airspace as of December 31, 2024.

Balance as of December 31, 2023New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2024
Cubic yards (in millions):
Permitted airspace4,8217(87)44,745
Probable expansion airspace2834(5)282
Total cubic yards (in millions)5,10442(87)45,027
Number of sites:
Permitted airspace2071208
Probable expansion airspace141(1)14

The following table reflects changes in capacity and remaining capacity for these landfills, as measured in cubic yards of airspace, as of December 31, 2023.

Balance as of December 31, 2022New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2023
Cubic yards (in millions):
Permitted airspace4,8174047(86)34,821
Probable expansion airspace198124(39)283
Total cubic yards (in millions)5,015124408(86)35,104
Number of sites:
Permitted airspace2063(2)207
Probable expansion airspace133(2)14

Total available disposal capacity represents the sum of estimated permitted airspace plus an estimate of probable expansion airspace. Engineers develop these estimates at least annually using information provided by annual aerial surveys. Before airspace included in an expansion area is determined to be probable expansion airspace and, therefore, included in our calculation of total available disposal capacity, it must meet all of our expansion criteria. See Note 2, Summary of Significant Accounting Policies, and Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Item 8 of this Annual Report on Form 10-K for further information. Also see our Critical Accounting Judgments and Estimates section of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

As of December 31, 2024, 14 of our landfills met all of our criteria for including their probable expansion airspace in their total available disposal capacity. At projected annual volumes, these 14 landfills have an estimated remaining average site life of 49 years, including probable expansion airspace. The average estimated remaining life of all of our landfills is 56 years. We have other expansion opportunities that are not included in our total available airspace because they do not meet all of our criteria for treatment as probable expansion airspace.

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The following table reflects the estimated operating lives of our active landfill sites based on available and probable disposal capacity using current annual volumes as of December 31, 2024:

Number of Sites without Probable Expansion AirspaceNumber of Sites with Probable Expansion AirspaceTotal SitesPercent of Total
0 to 5 years232311%
6 to 10 years2112211
11 to 20 years3443818
21 to 40 years4955426
41+ years6747134
Total19414208100%

Final Capping, Closure and Post-Closure Costs

As of December 31, 2024, accrued final capping, closure and post-closure costs were $2,144 million, of which $96 million were current and $2,048 million were long-term as reflected in our consolidated balance sheets in accrued landfill and environmental costs included in Part II, Item 8 of this Annual Report on Form 10-K.

Remediation and Other Charges for Landfill Matters

It is reasonably possible that we will need to adjust our accrued landfill and environmental liabilities to reflect the effects of new or additional information, to the extent that such information impacts the costs, timing or duration of the required actions. Future changes in our estimates of the costs, timing or duration of the required actions could have a material adverse effect on our consolidated financial position, results of operations and cash flows.

For a description of our significant remediation matters, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Investment in Landfills

As of December 31, 2024, we expect to spend an estimated additional $12 billion on existing landfills, primarily related to cell construction and environmental structures, over their remaining lives. Our total expected investment, excluding non-depletable land, estimated to be $17 billion, or $3.36 per cubic yard, is used in determining our depletion and amortization expense based on airspace consumed using the units-of-consumption method.

The following table reflects our future expected investment as of December 31, 2024 (in millions):

Balance as of December 31, 2024Expected Future InvestmentTotal Expected Investment
Non-depletable landfill land$195$$195
Landfill development costs10,51811,98822,506
Construction-in-progress – landfill437437
Accumulated depletion and amortization(6,031)(6,031)
Net investment in landfill land and development costs$5,119$11,988$17,107

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The following table reflects our net investment in our landfills, excluding non-depletable land, and our depletion, amortization and accretion expense for the years ended December 31, 2024 and 2023:

20242023
Number of landfills owned or operated208207
Net investment, excluding non-depletable land (in millions)$4,924$4,745
Total estimated available disposal capacity (in millions of cubic yards)5,0275,104
Net investment per cubic yard$0.98$0.93
Landfill depletion and amortization expense (in millions)$514$471
Accretion expense (in millions)10798
621569
Airspace consumed (in millions of cubic yards)8786
Depletion, amortization and accretion expense per cubic yard of airspace consumed$7.14$6.62

During 2024 and 2023, our average compaction rate was approximately 2,000 pounds per cubic yard based primarily on a three-year historical moving average.

Property and Equipment

The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2024 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2023Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2024
Land$878$5$(3)$18$$$(1)$897
Landfill development costs9,91156619044510,518
Vehicles and equipment10,232848(357)427110,998
Buildings and improvements1,92244(5)181402,119
Construction-in-progress - landfill350494(407)437
Construction-in-progress - other5544981(478)575
Total$23,847$1,894$(364)$46$61$90$(30)$25,544
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2023Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2024
Landfill development costs$(5,516)$(501)$$$(13)$(1)$(6,031)
Vehicles and equipment(6,148)(897)34517(6,692)
Buildings and improvements(832)(111)3(4)(944)
Total$(12,496)$(1,509)$348$1$(13)$2$(13,667)

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The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2023 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2022Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2023
Land$780$4$(2)$95$$$1$878
Landfill development costs9,5749(14)(137)61403789,911
Vehicles and equipment9,465749(348)16120510,232
Buildings and improvements1,70578(14)63901,922
Construction-in-progress - landfill358440(39)(409)350
Construction-in-progress - other35945628(289)554
Total$22,241$1,736$(378)$171$61$40$(24)$23,847
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2022Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2023
Landfill development costs$(5,059)$(466)$14$$(6)$1$(5,516)
Vehicles and equipment(5,680)(812)33662(6,148)
Buildings and improvements(758)(89)78(832)
Total$(11,497)$(1,367)$357$6$(6)$11$(12,496)

Liquidity and Capital Resources

Cash and Cash Equivalents

The following is a summary of our cash and cash equivalents and restricted cash and marketable securities balances as of December 31:

20242023
Cash and cash equivalents$74$140
Restricted cash and marketable securities208164
Less: restricted marketable securities(79)(76)
Cash, cash equivalents, restricted cash and restricted cash equivalents$203$228

Our restricted cash and marketable securities include amounts pledged to regulatory agencies and governmental entities as financial guarantees of our performance under certain collection, landfill and transfer station contracts and permits, and relating to our final capping, closure and post-closure obligations at our landfills as well as restricted cash and marketable securities related to our insurance obligations.

The following table summarizes our restricted cash and marketable securities as of December 31:

20242023
Capping, closure and post-closure obligations$59$43
Insurance149121
Total restricted cash and marketable securities$208$164

Material Cash Requirements and Intended Uses of Cash

We expect existing cash, cash equivalents, restricted cash and marketable securities, cash flows from operations and financing activities to continue to be sufficient to fund our operating activities and cash commitments for investing and financing activities for at least the next 12 months and thereafter for the foreseeable future. Our known current- and long-term uses of cash include, among other possible demands: (1) capital expenditures and leases, (2) acquisitions, (3) dividend payments, (4)

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payments to service debt and other long-term obligations, (5) payments for asset retirement obligations and environmental liabilities and (6) share repurchases.

Capital Expenditures and Leases

We make investments in property and equipment primarily to allow for growth of our service offerings. These investments are largely concentrated in vehicles and equipment and costs to construct our landfills. We expect to receive between $1.86 billion to $1.90 billion of property and equipment, net of proceeds from the sale of property and equipment, in 2025.

We lease property and equipment in the ordinary course of business under various lease agreements. The most significant lease obligations are for real property and equipment specific to our industry, including property operated as a landfill or transfer station and operating equipment. As of December 31, 2024, the amount of total future lease payments under operating and finance leases was $269 million and $445 million, respectively. For additional detail regarding our lease obligations, see Note 10, Leases, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Acquisitions

Our acquisition growth strategy focuses primarily on acquiring privately held recycling and waste companies and environmental solutions businesses that complement our existing business platform. We continue to invest in value-enhancing acquisitions in existing markets.

We expect to invest approximately $1 billion in acquisitions in 2025.

Dividend Payments

In October 2024 our Board of Directors approved a quarterly dividend of $0.580 per share. Aggregate cash dividends declared were $699 million for the year ended December 31, 2024. As of December 31, 2024, we recorded a quarterly dividend payable of $181 million to shareholders of record at the close of business on January 2, 2025, which was paid on January 15, 2025.

Debt and other long-term obligations

Debt repayments may include purchases of our outstanding indebtedness in the secondary market or otherwise. We believe that our excess cash, cash from operating activities and our availability to draw on our credit facilities provide us with sufficient financial resources to meet our anticipated capital requirements and maturing obligations as they come due.

We may choose to voluntarily retire certain portions of our outstanding debt before their maturity dates using cash from operations or additional borrowings. We may also explore opportunities in the capital markets to fund redemptions should market conditions be favorable. Early extinguishment of debt will result in an impairment charge in the period in which the debt is repaid. The loss on early extinguishment of debt relates to premiums paid to effectuate the repurchase and the relative portion of unamortized note discounts and debt issue costs.

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion, and in October 2023, was subsequently increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of December 31, 2024 was 4.646% with a weighted average maturity of approximately 18 days. In the event of a failed re-borrowing, we currently have availability under our Credit Facility (as defined below) to fund the amounts borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2024.

As of December 31, 2024, the total principal value of our debt was $12.8 billion, of which $862 million is due in 2025.

We have several agreements that require us to dispose of a minimum number of tons at third-party disposal facilities. Under these put-or-pay agreements, we must pay for agreed-upon minimum volumes regardless of the actual number of tons placed at the facilities.

Our unconditional purchase commitments have varying expiration dates, with some extending through the remaining life of the respective landfill. Future minimum payments under unconditional purchase commitments consist primarily of (1) disposal related agreements, which include fixed or minimum royalty payments, host agreements and take-or-pay and put-or-pay agreements and (2) other obligations including committed capital expenditures and consulting service agreements. As of December 31, 2024, such purchase commitments, which do not qualify for recognition on our Consolidated Balance Sheets, amount to $907 million, of which $202 million was short-term.

For additional detail regarding our debt and known contractual and other obligations, see Note 9, Debt, and Note 19, Commitments and Contingencies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Asset Retirement Obligations and Environmental Liabilities

We have future obligations for final capping, closure and post-closure costs with respect to the landfills we own or operate as set forth in applicable landfill permits. As of December 31, 2024, our future obligations for final capping, closure and post-closure costs totaled $2.1 billion, of which $96 million was short-term.

Additionally, we are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. As of December 31, 2024, our environmental liabilities totaled $447 million, of which $63 million was short-term.

For additional detail regarding our asset retirement obligations and environmental liabilities, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Share Repurchases

In October 2020, our Board of Directors approved a $2 billion share repurchase authorization effective starting January 1, 2021 and extending through December 31, 2023. In October 2023, our Board of Directors approved a $3 billion share repurchase authorization effective starting January 1, 2024 and extending through December 31, 2026. Share repurchases under the current program may be made through open market purchases or privately negotiated transactions in accordance with applicable federal securities laws. While the Board of Directors has approved the program, the timing of any purchases, the prices and the number of shares of common stock to be purchased will be determined by our management, at its discretion, and will depend upon market conditions and other factors. The share repurchase program may be extended, suspended or discontinued at any time. As of December 31, 2024, the remaining authorized purchase capacity under our October 2023 repurchase program was $2.5 billion.

Summary of Cash Flow Activity

The major components of changes in cash flows for 2024 and 2023 are discussed in the following paragraphs. The following table summarizes our cash flow from operating activities, investing activities and financing activities for the years ended December 31, 2024 and 2023 (in millions of dollars):

20242023
Net cash provided by operating activities$3,936$3,618
Net cash used in investing activities$(2,561)$(3,667)
Net cash (used in) provided by financing activities$(1,398)$62

Cash Flows Provided by Operating Activities

The most significant items affecting the comparison of our operating cash flows for 2024 and 2023 are summarized below.

Changes in assets and liabilities, net of effects from business acquisitions and divestitures, decreased our cash flow from operations by $378 million in 2024, compared to a decrease of $91 million during the same period in 2023, primarily as a result of the following:

•Our accounts receivable, exclusive of the change in allowance for doubtful accounts and customer credits, increased $76 million during 2024, due to the timing of billings net of collections, compared to a $71 million increase in the same period in 2023. As of December 31, 2024, our days sales outstanding were 40.9, or 30.0 days net of deferred revenue, compared to 42.0, or 30.9 days net of deferred revenue, as of December 31, 2023.

•Our prepaid expenses and other assets increased $171 million in 2024 compared to a $30 million increase in 2023. The increase in prepaid expenses and other assets during 2024 is primarily driven by an increase in capitalized implementation costs for our cloud-based hosting arrangements and higher insurance premium costs.

•Our accounts payable decreased $27 million during 2024 compared to an $83 million increase during 2023, due to the timing of payments.

•Cash paid for capping, closure and post-closure obligations was $56 million during 2024 compared to $61 million for 2023. The decrease in cash paid for capping, closure and post-closure obligations is primarily due to the timing of capping and post-closure payments at certain of our landfill sites.

•Cash paid for remediation obligations was $7 million higher during 2024 compared to 2023.

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In addition, cash paid for interest was $487 million and $423 million, excluding net swap settlements for our fixed to floating interest rate swaps, for 2024 and 2023, respectively. Cash paid for income taxes was $313 million and $343 million for 2024 and 2023, respectively.

We use cash flows from operations to fund capital expenditures, acquisitions, dividend payments, debt repayments and share repurchases.

Cash Flows Used in Investing Activities

The most significant items affecting the comparison of our cash flows used in investing activities for 2024 and 2023 are summarized below:

•Capital expenditures during 2024 were $1,855 million as compared to $1,631 million for 2023.

•Proceeds from sales of property and equipment during 2024 were $47 million as compared to $29 million for 2023.

•During 2024 and 2023, we used $753 million and $2,065 million, respectively, for acquisitions and investments, net of cash acquired. During 2024 and 2023, we received $2 million and $6 million from business divestitures, respectively.

We intend to finance capital expenditures and acquisitions through cash on hand, restricted cash held for capital expenditures, cash flows from operations, our revolving credit facilities and tax-exempt bonds and other financings. We expect to primarily use cash and borrowings under our revolving credit facilities to pay for future acquisitions.

Cash Flows (Used in) Provided by Financing Activities

The most significant items affecting the comparison of our cash flows used in financing activities for 2024 and 2023 are summarized below:

•During 2024, we issued $900 million of senior notes for cash proceeds, net of discounts and fees, of $889 million. During 2023, we issued $2,200 million of senior notes for cash proceeds, net of discounts and fees, of $2,172 million. Net payments of notes payable and long-term debt were $1,089 million during 2024, compared to net payments of $1,190 million in 2023. For a more detailed discussion, see the Financial Condition section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

•During 2024, we repurchased 2.5 million shares of our stock for $480 million. During 2023, we repurchased 1.8 million shares of our stock for $262 million.

•In July 2024, our Board of Directors approved an increase in our quarterly dividend to $0.580 per share. Dividends paid were $687 million and $638 million in 2024 and 2023, respectively.

•During 2024 and 2023, cash paid for purchase price holdback releases and contingent purchase price related to acquisitions was $15 million and $19 million, respectively.

Financial Condition

Debt Obligations

As of December 31, 2024, we had $862 million of principal debt maturing within the next 12 months, which includes certain finance lease obligations. All of our tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield, with the exception of three tax-exempt financings with initial remarketing periods of 10 years. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agent is unable to remarket our bonds, the remarketing agent can put the bonds to us. In the event of a failed remarketing, as of December 31, 2024, we had availability under our Credit Facility (defined below) to fund these bonds until they are remarketed successfully. In the event of a failed re-borrowing under our commercial paper program, as of December 31, 2024, we had availability under our Credit Facility to fund the amounts borrowed under the commercial paper program until it is re-borrowed successfully. Accordingly, we have classified these tax-exempt financings and commercial paper program borrowings as long-term in our consolidated balance sheet as of December 31, 2024.

For further discussion of the components of our overall debt, see Note 9, Debt, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Credit Facilities

Uncommitted Credit Facility

In January 2022, we entered into a $200 million unsecured uncommitted revolving credit facility (the Uncommitted Credit Facility). The Uncommitted Credit Facility bears interest at an annual percentage rate to be agreed upon by both parties. Borrowings under the Uncommitted Credit Facility can be used for working capital, letters of credit and other general corporate purposes. The agreement governing our Uncommitted Credit Facility requires us to comply with certain covenants. The Uncommitted Credit Facility may be terminated by either party at any time. As of December 31, 2024 and 2023, we had no borrowings outstanding under our Uncommitted Credit Facility.

The Credit Facility

In July 2024, we and our subsidiary, USE Canada Holdings, Inc. (the Canadian Borrower) entered into the Second Amended and Restated Credit Agreement (the Credit Facility) which amends and restates the unsecured revolving credit facility we entered into in August 2021. The total outstanding principal amount that we may borrow under the Credit Facility may not exceed the current aggregate lenders' commitments of $3.5 billion, and borrowings under the Credit Facility mature in July 2029. As permitted by the Credit Facility, we have the right to request two one-year extensions of the maturity date, but none of the lenders are committed to participate in such extensions. The Credit Facility also includes a feature that allows us to increase availability, at our option, by an aggregate amount of up to $1 billion through increased commitments from existing lenders or the addition of new lenders.

All loans to the Canadian Borrower and all loans denominated in Canadian dollars cannot exceed $1 billion (the Canadian Sublimit). The Canadian Sublimit is part of, and not in addition to, the aggregate commitments under the Credit Facility.

Borrowings under the Credit Facility in United States dollars bear interest at a Base Rate, a daily floating SOFR or a term SOFR plus a current applicable margin of 0.920% based on our Debt Ratings (all as defined in the Credit Facility agreement). The Canadian dollar-denominated loans bear interest based on the Canadian Prime Rate or the Canadian Dollar Offered Rate plus a current applicable margin of 0.920% based on our Debt Ratings. As of December 31, 2024, $232 million was outstanding against the Canadian Sublimit, with an average interest rate of 5.309%.

The Credit Facility is subject to facility fees based on applicable rates defined in the Credit Facility agreement and the aggregate commitment, regardless of usage. The Credit Facility can be used for working capital, capital expenditures, acquisitions, letters of credit and other general corporate purposes. The Credit Facility agreement requires us to comply with financial and other covenants. We may pay dividends and repurchase common stock if we are in compliance with these covenants.

We had $514 million and $297 million outstanding under our Credit Facility as of December 31, 2024 and 2023, respectively. We had $317 million and $337 million of letters of credit outstanding under our Credit Facility as of December 31, 2024 and 2023, respectively. We also had $477 million and $495 million of principal borrowings outstanding (net of related discount on issuance) under our commercial paper program as of December 31, 2024 and 2023, respectively. As a result, availability under our Credit Facility was $2,192 million and $2,371 million as of December 31, 2024 and 2023, respectively.

Financial and Other Covenants

The Credit Facility requires us to comply with financial and other covenants. To the extent we are not in compliance with these covenants, we cannot pay dividends or repurchase common stock. Compliance with covenants also is a condition for any incremental borrowings under the Credit Facility, and failure to meet these covenants would enable the lenders to require repayment of any outstanding loans (which would adversely affect our liquidity). Additionally, if we are not in compliance with these covenants, we could not use the availability under our Credit Facility to fund borrowings we currently make under our commercial paper program, if there is a failed reborrowing under that program. The Credit Facility provides that our total debt to EBITDA ratio may not exceed 3.75 to 1.00 as of the last day of any fiscal quarter. In the case of an "elevated ratio period", which may be elected by us if one or more acquisitions during a fiscal quarter involve aggregate consideration in excess of $200.0 million (the Trigger Quarter), the total debt to EBITDA ratio may not exceed 4.25 to 1.00 during the Trigger Quarter and for the three fiscal quarters thereafter. The Credit Facility also provides that there may not be more than two elevated ratio periods during the term of the Credit Facility agreement. As of December 31, 2024, our total debt to EBITDA ratio was approximately 2.6 compared to the 3.75 maximum allowed. As of December 31, 2024, we were in compliance with all other covenants under our Credit Facility.

EBITDA, which is a non-U.S. GAAP measure, is calculated as defined in our Credit Facility agreement. In this context, EBITDA is used solely to provide information regarding the extent to which we are in compliance with debt covenants and is not comparable to EBITDA used by other companies or used by us for other purposes.

Failure to comply with the financial and other covenants under the Credit Facility, as well as the occurrence of certain material adverse events, would constitute defaults and would allow the lenders under the Credit Facility to accelerate the maturity of all

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indebtedness under the Credit Facility. This could have an adverse effect on the availability of financial assurances. In addition, maturity acceleration on the Credit Facility constitutes an event of default under certain of our other debt and derivative instruments. If such acceleration were to occur, we would not have sufficient liquidity available to repay the indebtedness. We would likely have to seek an amendment under the Credit Facility for relief from the financial covenant or repay the debt with proceeds from the issuance of new debt or equity, or asset sales, if necessary. We may be unable to amend the Credit Facility or raise sufficient capital to repay such obligations in the event the maturity is accelerated.

Term Loan Facility

On April 29, 2022, we entered into a $1 billion unsecured Term Loan Facility (Term Loan Facility), which bore interest at a base rate or a forward-looking SOFR, plus an applicable margin based on our debt ratings. We had $500 million of borrowings outstanding under the Term Loan Facility as of December 31, 2023. During the year ended December 31, 2024, we repaid the remaining balance of the Term Loan Facility.

Commercial Paper Program

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion, and in October 2023, was increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of December 31, 2024 was 4.646% with a weighted average maturity of approximately 18 days.

We had $477 million and $496 million principal value of commercial paper issued and outstanding under the program as of December 31, 2024 and 2023, respectively. In the event of a failed re-borrowing, we currently have availability under our Credit Facility (as defined above) to fund amounts currently borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2024 and 2023, respectively.

Senior Notes and Debentures

In March 2023, we issued $400 million of 4.875% senior notes due 2029 (the Existing 2029 Notes) and $800 million of 5.000% senior notes due 2034 (the 2034 Notes, and together with the Existing 2029 Notes, the Notes). The Notes are unsecured and unsubordinated and rank equally with our other unsecured obligations. We used the proceeds from the Notes for general corporate purposes, including the repayment of a portion of amounts outstanding under the Uncommitted Credit Facility, the Commercial Paper Program, the Credit Facility, and the Term Loan Facility. As a result of the Term Loan Facility repayment, we incurred a non-cash loss on the early extinguishment of debt related to the ratable portion of unamortized deferred issuance costs of less than $1 million.

In December 2023, we issued an additional $350 million of 4.875% senior notes due 2029 (the New 2029 Notes, and together with the Existing 2029 Notes, the 2029 Notes). After giving effect to the issuance of the New 2029 Notes, $750 million in aggregate principal amount of the 2029 Notes is outstanding. The New 2029 Notes are fungible with the Existing 2029 Notes, and taken together, the 2029 Notes are treated as a single series.

In December 2023, we also issued $650 million of 5.000% senior notes due 2033 (the 2033 Notes). The proceeds of the 2033 Notes were used for general corporate purposes, including the repayment of a portion of amounts outstanding under the Uncommitted Credit Facility, the Commercial Paper Program, the Credit Facility, and the Term Loan Facility.

In June 2024, we issued $400 million of 5.000% senior notes due 2029 and $500 million of 5.200% senior notes due 2034. We used the proceeds from the June 2024 notes issuance for general corporate purposes, including the repayment of a portion of amounts outstanding under the Commercial Paper Program and the Credit Facility; and repayment of the remaining amount outstanding under the Term Loan Facility and the Uncommitted Credit Facility.

Our senior notes and debentures are general unsecured obligations. Interest is payable semi-annually.

Tax-Exempt Financings

As of December 31, 2024, we had $1,409 million of certain variable rate tax-exempt financings outstanding, with maturities ranging from 2026 to 2053. As of December 31, 2023, we had $1,281 million of certain variable rate tax-exempt financings outstanding, with maturities ranging from 2024 to 2053.

Finance Leases and Other

As of December 31, 2024, we had finance lease liabilities of $315 million with maturities ranging from 2025 to 2063. As of December 31, 2023, we had finance lease liabilities of $251 million with maturities ranging from 2024 to 2063.

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As of December 31, 2024, finance leases and other included $53 million related to the construction of an office building located in Phoenix, Arizona, which has been accounted for as a financing obligation. The amount is recorded within long-term debt, net of current maturities.

Credit Ratings

Our continued access to the debt capital markets and to new financing facilities, as well as our borrowing costs, depend on multiple factors, including market conditions, our operating performance and maintaining strong credit ratings. As of December 31, 2024, our credit ratings were BBB+, Baa1 and A- by Standard & Poor’s Ratings Services, Moody’s Investors Service and Fitch Ratings, Inc., respectively. If our credit ratings were downgraded, especially any downgrade to below investment grade, our ability to access the debt markets with the same flexibility that we have experienced historically, our cost of funds and other terms for new debt issuances could be adversely impacted.

Off-Balance Sheet Arrangements

We have no off-balance sheet debt or similar obligations, other than short-term operating leases and financial assurances, which are not classified as debt. We have no transactions or obligations with related parties that are not disclosed, consolidated into or reflected in our reported financial position or results of operations. We have not guaranteed any third-party debt.

Seasonality and Severe Weather

Our operations can be adversely affected by periods of inclement or severe weather, which could increase the volume of waste collected under our existing contracts (without corresponding compensation), delay the collection and disposal of waste, reduce the volume of waste delivered to our disposal sites, or delay the construction or expansion of our landfills and other facilities. Our operations also can be favorably affected by severe weather, which could increase the volume of waste in situations where we are able to charge for our additional services.

Contingencies

For a description of our commitments and contingencies, see Note 8, Landfill and Environmental Costs, Note 11, Income Taxes and Note 19, Commitments and Contingencies, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Financial Assurance

We must provide financial assurance to governmental agencies and a variety of other entities under applicable environmental regulations relating to our landfill operations for capping, closure and post-closure costs, and related to our performance under certain collection, landfill and transfer station contracts. We satisfy these financial assurance requirements by providing surety bonds, letters of credit, or insurance policies (Financial Assurance Instruments), or trust deposits, which are included in restricted cash and marketable securities and other assets in our consolidated balance sheets. The amount of the financial assurance requirements for capping, closure and post-closure costs is determined by applicable state environmental regulations. The financial assurance requirements for capping, closure and post-closure costs may be associated with a portion of the landfill or the entire landfill. Generally, states require a third-party engineering specialist to determine the estimated capping, closure and post-closure costs that are used to determine the required amount of financial assurance for a landfill. The amount of financial assurance required can, and generally will, differ from the obligation determined and recorded under U.S. GAAP. The amount of the financial assurance requirements related to contract performance varies by contract. Additionally, we must provide financial assurance for our insurance program and collateral for certain performance obligations. We do not expect a material increase in financial assurance requirements during 2025, although the mix of Financial Assurance Instruments may change.

These Financial Assurance Instruments are issued in the normal course of business and are not classified as indebtedness. Because we currently have no liability for the Financial Assurance Instruments, they are not reflected in our consolidated balance sheets; however, we record capping, closure and post-closure liabilities and insurance liabilities as they are incurred.

Critical Accounting Judgments and Estimates

Our consolidated financial statements have been prepared in accordance with U.S. GAAP and necessarily include certain estimates and judgments made by management. The following is a list of accounting policies that we believe are the most critical in understanding our consolidated financial position, results of operations and cash flows and that may require management to make subjective or complex judgments about matters that are inherently uncertain. Our critical accounting estimates are those estimates that involve a significant level of uncertainty at the time the estimate was made, and changes in them have had or are reasonably likely to have a material effect on our financial condition or results of operations. Accordingly, actual results could differ materially from our estimates. We base our estimates on past experience and other assumptions that

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we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Such critical accounting policies, estimates and judgments are applicable to all of our operating segments.

We have noted examples of the estimates that are subject to uncertainty in the accounting for these areas below.

Landfill Development Asset Depletion

Landfill depletion expense for the years ended December 31, 2024 and 2023 was $408 million and $379 million, respectively.

To match the expense related to the landfill asset with the revenue generated by the landfill operations, we amortize the landfill development asset over its operating life on a per-ton basis as waste is accepted at the landfill. The landfill asset is fully depleted at the end of a landfill’s operating life. The per-ton rate is calculated by dividing the sum of the landfill development asset net book value plus estimated future development costs for the landfill, by the landfill’s estimated remaining permitted and probable disposal capacity. The expected future development costs are not inflated or discounted, but rather expressed in nominal dollars. This rate is applied to each ton accepted at the landfill to arrive at depletion expense for the period.

The calculation of depletion expense includes certain estimates and assumptions around future landfill development costs and remaining permitted and probable landfill disposal capacity. Changes in these estimates are subject to uncertainty attributable to the following factors: (i) actual future costs of construction materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor, and (ii) technical designs could be altered due to unexpected operating conditions, regulatory changes or legislative changes.

On at least an annual basis, we update the estimates of future development costs and remaining disposal capacity for each landfill. These costs and disposal capacity estimates are reviewed and approved by senior operations management annually. Changes in cost estimates and disposal capacity are reflected prospectively in the landfill depletion rates that are updated annually.

Landfill Asset Retirement Obligations

We have two types of retirement obligations related to landfills: (1) capping and (2) closure and post-closure. As of December 31, 2024 and 2023, our asset retirement obligations related to capping, closure and post-closure were $2,144 million and $1,937 million, respectively. Changes in these estimates may be sensitive to the following factors: (i) changes to environmental laws and regulations and/or circumstances affecting our operations could result in a significant change to our estimates, which could have a significant impact on our result of operations, (ii) we do not expect to incur most of these costs for a number of years, which requires us to estimate the timing of projected cash flows and make assumptions regarding inflation rates, and (iii) actual future costs of materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor.

Obligations associated with final capping activities that occur during the operating life of the landfill are recognized on a units-of-consumption basis as airspace is consumed within each discrete capping event. Obligations related to closure and post-closure activities that occur after the landfill has ceased operations are recognized on a units-of-consumption basis as airspace is consumed throughout the entire life of the landfill. Landfill retirement obligations are capitalized as the related liabilities are recognized and amortized using the units-of-consumption method over the airspace consumed within the capping event or the airspace consumed within the entire landfill, depending on the nature of the obligation. Landfill amortization expense for the years ended December 31, 2024 and 2023 was $106 million and $92 million, respectively. All obligations are initially measured at estimated fair value. Fair value is calculated on a present value basis using an inflation rate and our credit-adjusted, risk-free rate in effect at the time the liabilities were incurred. Future costs for final capping, closure and post-closure are developed at least annually by engineers, and are inflated to future value using estimated future payment dates and inflation rate projections.

Landfill capping. As individual areas within each landfill reach capacity, we must cap and close the areas in accordance with the landfill site permit. These requirements are detailed in each landfill's technical design, which is reviewed and approved by the regulatory agency issuing the landfill site permit.

Closure and post-closure. Closure costs are costs incurred after a landfill stops receiving waste, but prior to being certified as closed. After the entire landfill has reached capacity and is certified closed, we must continue to maintain and monitor the site for a post-closure period, which generally extends for 30 years. Costs associated with closure and post-closure requirements generally include maintenance of the site, the monitoring of methane gas collection systems and groundwater systems and other activities that occur after the site has ceased accepting waste. Costs associated with post-closure monitoring generally include groundwater sampling, analysis and statistical reports, third-party labor associated with gas system operations and maintenance and transportation and disposal of leachate.

Landfill retirement obligation liabilities and assets. Estimates of the total future costs required to cap, close and monitor each landfill as specified by the landfill permit are updated annually. The estimates include inflation, the specific timing of future cash outflows and the anticipated waste flow into the capping events. Our cost estimates are inflated to the period of

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performance using an estimated inflation rate, which is updated annually. For 2024, our estimated inflation rate of 2.0% is based on the twenty year average core consumer price index and for 2023, our estimated inflation rate of 2.0% was based on the ten year average consumer price index.

The present value of the remaining capping costs for specific capping events and the remaining closure and post-closure costs for each landfill are recorded as incurred on a per-ton basis. These liabilities are incurred as disposal capacity is consumed at the landfill.

Retirement obligations are increased each year to reflect the passage of time by accreting the balance at the weighted average credit-adjusted risk-free rate that was used to calculate each layer of the recorded liabilities. This accretion is charged to operating expenses. Actual cash expenditures reduce the asset retirement obligation liabilities as they are made.

Corresponding retirement obligation assets are recorded for the same value as the additions to the capping, closure and post-closure liabilities. The retirement obligation assets are amortized to expense on a per-ton basis as disposal capacity is consumed. The per-ton rate is calculated by dividing the sum of each of the recorded retirement obligation asset’s net book value and expected future additions to the retirement obligation asset by the remaining disposal capacity. A per-ton rate is determined for each separate capping event based on the disposal capacity relating to that event. Closure and post-closure per-ton rates are based on the total disposal capacity of the landfill.

Changes in these estimates may be sensitive to the following factors: (1) changes to environmental laws and regulations and/or circumstances affecting our operations could result in a significant change to our estimates, which could have a significant impact on our result of operations, (ii) we do not expect to incur most of these costs for a number of years, which requires us to estimate the timing of projected cash flows and make assumptions regarding inflation rates, and (iii) actual future costs of materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor.

On an annual basis, we update our estimates of future capping, closure and post-closure costs and of future disposal capacity for each landfill. Revisions in estimates of our costs or timing of expenditures are recognized immediately as increases or decreases to the capping, closure and post-closure liabilities and the corresponding retirement obligation assets. Changes in the assets result in changes to the amortization rates which are applied prospectively, except for fully incurred capping events and closed landfills, where the changes are recorded immediately in results of operations since the associated disposal capacity has already been consumed.

Total landfill depletion and amortization expense for the years ended December 31, 2024 and 2023 was $514 million and $471 million, respectively. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Environmental Liabilities

We are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Under current laws and regulations, we may be responsible for environmental remediation at sites that we either own or operate, including sites that we have acquired, or sites where we have (or a company that we have acquired has) delivered waste. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration. To estimate our ultimate liability at these sites, we evaluate several factors, including the nature and extent of contamination at each identified site, the required remediation methods, timing of expenditures, the apportionment of responsibility among the potentially responsible parties and the financial viability of those parties.

We accrue for costs associated with environmental remediation obligations when such costs are probable and reasonably estimable in accordance with accounting for loss contingencies. We periodically review the status of all environmental matters and update our estimates of the likelihood of and future expenditures for remediation as necessary. Changes in the liabilities resulting from these reviews are recognized currently in earnings in the period in which the adjustment is known. Adjustments to estimates are reasonably possible in the near term and may result in changes to recorded amounts. With the exception of those obligations assumed in certain business combinations, environmental obligations are recorded on an undiscounted basis. Environmental obligations assumed in certain business combinations are initially estimated on a discounted basis, and accreted to full value over time through charges to interest expense. Adjustments arising from changes in amounts and timing of estimated costs and settlements may result in increases or decreases in these obligations and are calculated on a discounted basis as they were initially estimated on a discounted basis. These adjustments are charged to operating income when they are known. We perform a comprehensive review of our environmental obligations annually and also review changes in facts and circumstances associated with these obligations at least quarterly. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on our remediation adjustments. We have not reduced the liabilities we have recorded for recoveries from other potentially responsible parties or insurance companies.

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As of December 31, 2024 and 2023, we had $447 million and $485 million of environmental liabilities, respectively. Changes in these estimates may be sensitive to changes in cost estimates, timing of estimated costs and settlements, inflation and applicable regulations. Our estimates of these liabilities require assumptions about uncertain future events, which may change the ultimate amounts of our environmental remediation liabilities. Thus, our estimates could change substantially as additional information becomes available regarding the nature or extent of contamination, the required remediation methods, timing of expenditures, the final apportionment of responsibility among the potentially responsible parties identified, the financial viability of those parties and the actions of governmental agencies or private parties with interests in the matter. The actual environmental costs may exceed our current and future accruals for these costs, and any adjustments could be material.

New Accounting Standards

For a description of new accounting standards that may affect us, see Note 2, Summary of Significant Accounting Policies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

FY 2023 10-K MD&A

SEC filing source: 0001060391-24-000142.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2024-02-29. Report date: 2023-12-31.

ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our audited consolidated financial statements and the notes thereto included in Part II, Item 8 of this Annual Report on Form 10-K. This discussion may contain forward-looking statements that anticipate results that are subject to uncertainty. We discuss in more detail various factors that could cause actual results to differ from expectations in Part I, Item 1A, Risk Factors in this Annual Report on Form 10-K.

For further discussion regarding our results of operations for the year ended December 31, 2022 as compared to the year ended December 31, 2021, refer to Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022.

Recent Developments

2024 Financial Guidance

In 2024, we will focus on pricing in excess of cost inflation, driving profitable volume growth, investing in sustainability to improve the environment and drive growth, investing in value-creating acquisitions and advancing technology to improve productivity and increase customer retention. Specific guidance follows:

Revenue

We expect revenue to be in the range of $16.100 billion to $16.200 billion. We expect an increase in average yield of approximately 5.5% to 6.0% and volume growth to be in a range of 0.0% to 0.5%. Average yield on related business revenue is expected to be in a range of 6.5% to 7.0%.

Adjusted Diluted Earnings per Share

The following is a summary of anticipated adjusted diluted earnings per share for the year ending December 31, 2024 compared to the actual adjusted diluted earnings per share for the year ended December 31, 2023. Adjusted diluted earnings per share is not a measure determined in accordance with U.S. GAAP:

(Anticipated) Year Ending December 31, 2024(Actual) Year Ended December 31, 2023
Diluted earnings per share$ 5.86 to 5.92$5.47
Restructuring charges0.080.08
Gain on business divestitures and impairments, net(0.03)
Adjustment to withdrawal liability for multiemployer pension funds0.01
US Ecology, Inc. acquisition integration and deal costs0.08
Adjusted diluted earnings per share$ 5.94 to 6.00$5.61

We believe that the presentation of adjusted diluted earnings per share provides an understanding of operational activities before the financial effect of certain items. We use this measure, and believe investors will find it helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate effect on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definition of adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies.

The guidance set forth above constitutes forward-looking information and is not a guarantee of future performance. The

guidance is based upon the current beliefs and expectations of our management and is subject to significant risk and

uncertainties that could cause actual results to differ materially from those shown above. See Item 1A. Risk Factors - Disclosure Regarding Forward-Looking Statements.

Overview

Republic is one of the largest providers of environmental services in the United States, as measured by revenue. As of December 31, 2023, we operated across the United States and Canada through 364 collection operations, 246 transfer stations, 74 recycling centers, 207 active landfills, 3 treatment, recovery and disposal facilities, 22 treatment, storage and disposal facilities (TSDF), 6 salt water disposal wells, 12 deep injection wells and 1 polymer center. We are engaged in 76 landfill gas-to-energy and other renewable energy projects and had post-closure responsibility for 126 closed landfills.

Revenue for the year ended December 31, 2023 increased by 10.8% to $14,964.5 million compared to $13,511.3 million in 2022. This change in revenue is due to increased volume of 0.5%, average yield of 6.1%, acquisitions, net of divestitures of

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4.8%, and environmental solutions revenue of 0.1%, partially offset by decreased recycling processing and commodity sales of 0.5% and fuel recovery fees of 0.2%

The following table summarizes our revenue, costs and expenses for the years ended December 31, 2023 and 2022 (in millions of dollars and as a percentage of revenue):

20232022
Revenue$14,964.5100.0%$13,511.3100.0%
Expenses:
Cost of operations8,942.259.88,205.060.7
Depreciation, amortization and depletion of property and equipment1,368.49.11,245.69.2
Amortization of other intangible assets66.30.453.90.4
Amortization of other assets66.70.552.10.4
Accretion97.90.789.60.7
Selling, general and administrative1,608.710.81,454.310.8
Adjustment to withdrawal liability for multiemployer pension funds4.5(1.6)
Gain on business divestitures and impairments, net(3.6)(6.3)
Restructuring charges33.20.227.00.2
Operating income$2,780.218.5%$2,391.717.6%

Our pre-tax income was $2,191.5 million for the year ended December 31, 2023, compared to $1,831.5 million in 2022. Our net income attributable to Republic Services, Inc. was $1,731.0 million, or $5.47 per diluted share, for 2023, compared to $1,487.6 million, or $4.69 per diluted share, for 2022.

During 2023 and 2022, we recorded a number of charges, other expenses and benefits that impacted our pre-tax income, tax impact, net income attributable to Republic Services, Inc. (net income – Republic) and diluted earnings per share as noted in the following table (in millions, except per share data). Additionally, see our Results of Operations section of this Management's Discussion and Analysis of Financial Condition and Results of Operations for a discussion of other items that impacted our earnings during the years ended December 31, 2023 and 2022. For comparative purposes, prior year amounts have been reclassified to conform to current year presentation.

Year Ended December 31, 2023Year Ended December 31, 2022
Pre-tax IncomeTax Impact(3)Net Income - RepublicDiluted Earnings per SharePre-tax IncomeTax Impact(3)Net Income - RepublicDiluted Earnings per Share
As reported$2,191.5$460.5$1,731.0$5.47$1,831.5$343.9$1,487.6$4.69
Restructuring charges33.28.724.50.0827.07.119.90.06
Loss on extinguishment of debt and other related costs (1)0.20.2
Gain on business divestitures and impairments, net(3.6)5.1(8.7)(0.03)(6.3)(2.5)(3.8)(0.01)
Adjustment to withdrawal liability for multiemployer pension funds (2)4.51.23.30.01(1.6)(0.4)(1.2)
US Ecology, Inc. acquisition integration and deal costs33.58.724.80.0877.317.060.30.19
Total adjustments67.823.744.10.1496.421.275.20.24
As adjusted$2,259.3$484.2$1,775.1$5.61$1,927.9$365.1$1,562.8$4.93

(1) The aggregate impact to adjusted diluted earnings per share totals to less than $0.01 for the year ended December 31, 2023.

(2) The aggregate impact to adjusted diluted earnings per share totals to less than $0.01 for the year ended December 31, 2022.

(3) The income tax effect related to our adjustments includes both current and deferred income tax impact and is individually calculated based on the statutory rates applicable to each adjustment.

We believe that presenting adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share, which are not measures determined in accordance with U.S. GAAP, provide an understanding of operational activities before the financial impact of certain items. We use these measures, and believe investors will find them helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate impact on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can

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reasonably be expected to be recorded in future periods. Our definitions of adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies. Further information on each of these adjustments is included below.

Restructuring charges. In 2023 and 2022, we incurred restructuring charges of $33.2 million and $27.0 million, respectively. Of the 2023 charges, $9.5 million related to the early termination of certain leases and $23.7 million related to the redesign of our asset management, and customer and order management software systems. The 2022 charges primarily related to the redesign of our general ledger, budgeting and procurement enterprise resource planning systems, which was completed with the systems being placed into production in 2022. We paid $39.4 million and $19.8 million during 2023 and 2022, respectively, related to these restructuring efforts.

In 2024, we expect to incur restructuring charges of approximately $35 million, primarily related to the redesign of our asset management, and customer and order management software systems. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

Loss on extinguishment of debt and other related costs. During 2023, we incurred a loss on the early extinguishment of debt related to the early repayment of a portion of our Term Loan Facility. We incurred non-cash charges related to the proportional share of unamortized deferred issuance costs of $0.2 million. During 2022, we did not incur any losses on extinguishment of debt.

Gain on business divestitures and impairments, net. During 2023, we recorded a net gain on business divestitures and impairments of $3.6 million. During 2022, we recorded a net gain of $6.3 million related to business divestitures and asset impairments.

Adjustment to withdrawal liability for multiemployer pension funds. During 2023, we recorded a charge to earnings of $4.5 million for a withdrawal event at multiemployer pension funds to which we contribute. During 2022, we recorded a net reduction of $1.6 million related to the remeasurement of withdrawal costs liabilities from multiemployer pension plans. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

US Ecology, Inc. acquisition integration and deal costs. In 2023 and 2022, we incurred acquisition integration and deal costs of $33.5 million and $77.3 million, respectively, in connection with the acquisition of US Ecology, which included certain costs to close the acquisition and integrate the business, including stock compensation expense for unvested awards at closing as well as severance and change-in-control payments. The acquisition closed on May 2, 2022, and our integration of the business was substantially complete as of December 31, 2023.

Results of Operations

Revenue

We generate revenue by providing environmental services to our customers, including the collection and processing of recyclable materials, the collection, treatment, consolidation, transfer and disposal of hazardous and non-hazardous waste and other environmental solutions. Our residential, small-container and large-container collection operations in some markets are based on long-term contracts with municipalities. Certain of our municipal contracts have annual price escalation clauses that are tied to changes in an underlying base index such as a consumer price index. We generally provide small-container and large-container collection services to customers under contracts with terms up to three years. Our transfer stations and landfills generate revenue from disposal or tipping fees charged to third parties. Our recycling centers generate revenue from tipping fees charged to third parties and the sale of recycled commodities. Our revenue from environmental solutions primarily consists of (1) fees we charge for the collection, treatment, transfer and disposal of hazardous and non-hazardous waste, (2) field and industrial services, (3) equipment rental, (4) emergency response and standby services, (5) in-plant services, such as transportation and logistics, including at our TSDFs and (6) in-plant services such as high-pressure cleaning, tank cleaning, decontamination, remediation, transportation, spill cleanup and emergency response at refineries, chemical, steel and automotive plants and other governmental, commercial and industrial facilities. Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

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The following table reflects our revenue by service line for the years ended December 31, 2023 and 2022 (in millions of dollars and as a percentage of revenue):

20232022
Collection:
Residential$2,822.718.9%$2,642.619.5%
Small-container4,438.429.73,945.729.2
Large-container2,922.419.52,701.120.0
Other69.40.453.90.4
Total collection10,252.968.59,343.369.1
Transfer1,699.11,574.5
Less: intercompany(933.7)(849.8)
Transfer, net765.45.1724.75.4
Landfill2,885.42,681.7
Less: intercompany(1,206.0)(1,131.9)
Landfill, net1,679.411.21,549.811.5
Environmental solutions1,701.41,262.1
Less: intercompany(76.5)(53.9)
Environmental solutions, net1,624.910.91,208.28.9
Other:
Recycling processing and commodity sales312.32.1359.12.7
Other non-core329.62.2326.22.4
Total other641.94.3685.35.1
Total revenue$14,964.5100.0%$13,511.3100.0%

The following table reflects changes in components of our revenue, as a percentage of total revenue, for the years ended December 31, 2023 and 2022:

20232022
Average yield6.1%5.2%
Fuel recovery fees(0.2)2.6
Total price5.97.8
Volume0.52.4
Change in workdays(0.1)
Recycling processing and commodity sales(0.5)(0.6)
Environmental solutions0.10.5
Total internal growth6.010.0
Acquisitions / divestitures, net4.89.6
Total10.8%19.6%
Core price7.4%6.7%

Average yield is defined as revenue growth from the change in average price per unit of service, expressed as a percentage. Core price is defined as price increases to our customers and fees, excluding fuel recovery, net of price decreases to retain customers. We also measure changes in average yield and core price as a percentage of related-business revenue, defined as total revenue excluding recycled commodities, fuel recovery fees and environmental solutions revenue to determine the effectiveness of our pricing strategies.

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The following table reflects average yield, core price and volume as a percentage of related-business revenue for the years ended December 31, 2023 and 2022:

Years Ended December 31,
20232022
As a % of Related Business
Average yield7.3%5.7%
Core price8.9%7.3%
Volume0.7%2.6%

During 2023, we experienced the following changes in our revenue as compared to 2022:

•Average yield increased revenue by 6.1% due to positive pricing changes in all our collection and disposal lines of business.

•The fuel recovery fee program, which mitigates our exposure to increases in fuel prices, decreased revenue by 0.2%, primarily due to a decrease in fuel prices compared to 2022, partially offset by an increase of total revenue subject to the fuel recovery fees.

•Volume increased revenue by 0.5% during 2023 as compared to 2022 primarily due to volume growth in our landfill and our small container collection lines of business, partially offset by a decrease in volume in our large container and residential collections lines of business and our transfer line of business. The volume increase in our landfill line of business is primarily attributable to increased special waste and solid waste volumes, partially offset by a decrease in volume in our construction and demolition line of business.

•Recycling processing and commodity sales decreased revenue by 0.5% primarily due to a decrease in overall commodity prices as compared to 2022. The average price for recycled commodities, excluding glass and organics for 2023 was $117 per ton compared to $170 per ton for 2022.

Changing market demand for recycled commodities causes volatility in commodity prices. At current volumes and mix of materials, we believe a $10 per ton change in the price of recycled commodities will change both annual revenue and operating income by approximately $10 million.

•During 2023, environmental solutions revenue increased by 0.1% primarily due to price increases, partially offset by a decrease in exploration and production-related volumes due to a decline in rig counts.

•Acquisitions, net of divestitures, increased revenue by 4.8%, reflecting the results of our continued growth strategy of acquiring environmental services companies that complement and expand our existing business platform.

Cost of Operations

Cost of operations includes labor and related benefits, which consists of salaries and wages, health and welfare benefits, incentive compensation and payroll taxes. It also includes transfer and disposal costs representing tipping fees paid to third party disposal facilities and transfer stations; maintenance and repairs relating to our vehicles, equipment and containers, including related labor and benefit costs; transportation and subcontractor costs, which include costs for independent haulers that transport our waste to disposal facilities and costs for local operators that provide waste handling services associated with our National Accounts in markets outside our standard operating areas; fuel, which includes the direct cost of fuel used by our vehicles, net of fuel tax credits; disposal fees and taxes, consisting of landfill taxes, host community fees and royalties; landfill operating costs, which includes financial assurance, leachate disposal, remediation charges and other landfill maintenance costs; risk management costs, which include insurance premiums and claims; and other, which includes expenses such as facility operating costs, equipment rent and gains or losses on the sale of assets used in our operations.

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The following table summarizes the major components of our cost of operations for the years ended December 31, 2023 and 2022 (in millions of dollars and as a percentage of revenue):

20232022
Labor and related benefits$2,993.920.0%$2,702.920.0%
Transfer and disposal costs1,056.37.1992.97.3
Maintenance and repairs1,388.39.31,228.49.1
Transportation and subcontract costs1,171.07.81,086.58.0
Fuel541.63.6631.14.7
Disposal fees and taxes347.92.3342.32.5
Landfill operating costs333.02.2283.22.1
Risk management385.22.6321.42.4
Other725.04.9616.04.6
Subtotal8,942.259.88,204.760.7
US Ecology, Inc. acquisition integration and deal costs0.3
Total cost of operations$8,942.259.8%$8,205.060.7%

These cost categories may change from time to time and may not be comparable to similarly titled categories presented by other companies. As such, you should take care when comparing our cost of operations by component to that of other companies and of ours for prior periods.

Our cost of operations increased in aggregate dollars for the year ended December 31, 2023 compared to the same period in 2022 as a result of the following:

•Labor and related benefits increased in aggregate dollars due to higher hourly and salaried wages as a result of annual merit increases and volume-related growth. Acquisition-related growth also contributed to the increase in labor and related benefits.

•Transfer and disposal costs increased in aggregate dollars primarily due to acquisition-related growth and as a result of higher collection volumes.

During both 2023 and 2022, approximately 68% of the total solid waste volume we collected was disposed at landfill     sites that we own or operate (internalization).

•Maintenance and repairs expense increased due to higher hourly wages as a result of annual merit increases, an increase in third-party maintenance, parts inflation, and volume-related growth. Acquisition-related growth also contributed to the increase in maintenance and repairs expense.

•Transportation and subcontract costs increased in aggregate dollars in 2023 due to an increase in transportation rates as compared to 2022. Acquisition-related growth also contributed to the increase in transportation and subcontract costs.

•Our fuel costs decreased due to a decrease in the average diesel fuel cost per gallon. The national average diesel fuel cost per gallon for 2023 was $4.21 compared to $4.99 for 2022.

At current consumption levels, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel costs by approximately $27 million per year. Offsetting these changes in fuel expense would be changes in our fuel recovery fee charged to our customers. At current participation rates, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel recovery fee by approximately $36 million per year.

•Disposal    fees and taxes increased in aggregate dollars in 2023 primarily due to increased royalties and host fees from an increase in volume at certain landfills as compared to 2022.

•Landfill operating costs increased during 2023 primarily due to increased leachate treatment, transportation and disposal costs due in part to increased rainfall in select geographic regions, landfill gas and other maintenance costs as well as favorable remediation adjustments recorded during 2022 which did not recur in 2023.

•Risk management expenses increased primarily due to unfavorable actuarial development in our auto liability claims as well as higher premium costs.

•Other costs of operations increased during 2023 due to increased occupancy and facility related expenses, acquisition-related activity and higher third-party truck and equipment rental expense to support higher volumes.

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Depreciation, Amortization and Depletion of Property and Equipment

The following table summarizes depreciation, amortization and depletion of property and equipment for the years ended December 31, 2023 and 2022 (in millions of dollars and as a percentage of revenue):

20232022
Depreciation and amortization of property and equipment$897.56.0%$811.96.0%
Landfill depletion and amortization470.93.1433.73.2
Depreciation, amortization and depletion expense$1,368.49.1%$1,245.69.2%

Depreciation and amortization of property and equipment increased primarily due to assets added through acquisitions.

Landfill depletion and amortization expense increased in aggregate dollars due to higher landfill disposal volumes primarily driven by special waste and solid waste volumes as well as an increase in our overall average depletion rates. Additionally, we recognized certain favorable amortization adjustments related to our asset retirement obligations in 2022 that did not recur in 2023.

Amortization of Other Intangible Assets

Expenses for amortization of other intangible assets were $66.3 million, or 0.4% of revenue, for the year ended December 31, 2023, compared to $53.9 million, or 0.4% of revenue, for 2022. Amortization expense increased due to additional assets acquired as a result of our business acquisitions.

Amortization of Other Assets

Our other assets primarily relate to the prepayment of fees and capitalized implementation costs associated with cloud-based hosting arrangements. Expenses for amortization of other assets were $66.7 million, or 0.5% of revenue, for the year ended December 31, 2023, compared to $52.1 million, or 0.4% of revenue, for 2022.

Accretion Expense

Accretion expense was $97.9 million, or 0.7% of revenue, and $89.6 million, or 0.7% of revenue, for the years ended December 31, 2023 and 2022, respectively. Accretion expense increased in aggregate dollars due to acquired asset retirement obligations.

Selling, General and Administrative Expenses

Selling, general and administrative expenses include salaries, health and welfare benefits and incentive compensation for corporate and field general management, field support functions, sales force, accounting and finance, legal, management information systems and clerical and administrative departments. Other expenses include rent and office costs, fees for professional services provided by third parties, legal settlements, marketing, investor and community relations services, directors’ and officers’ insurance, general employee relocation, travel, entertainment and bank charges. Restructuring charges are excluded from selling, general and administrative expenses and are discussed separately.

The following table summarizes our selling, general and administrative expenses for the years ended December 31, 2023 and 2022 (in millions of dollars and as a percentage of revenue):

20232022
Salaries and related benefits$1,050.47.0%$937.97.0%
Provision for doubtful accounts53.20.441.50.3
Other471.63.1397.92.9
Subtotal1,575.210.51,377.310.2
US Ecology, Inc. acquisition integration and deal costs33.50.277.00.6
Total selling, general and administrative expenses$1,608.710.7%$1,454.310.8%

These cost categories may change from time to time and may not be comparable to similarly titled categories used by other companies. As such, you should take care when comparing our selling, general and administrative expenses by cost component to those of other companies and of ours for prior periods.

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The most significant items affecting our selling, general and administrative expenses during 2023 as compared to 2022 are summarized below:

•Salaries and related benefits increased primarily due to higher wages and benefits resulting from annual merit increases as well as higher management incentive expense as a result of outperforming our annual incentive metrics. Acquisition-related growth also contributed to the growth in salaries and related benefits in aggregate dollars.

•Provision for doubtful accounts increased primarily due to acquisition-related activity. As of December 31, 2023, our days sales outstanding were 42.0, or 30.9 days net of deferred revenue, compared to 43.3, or 31.8 days net of deferred revenue, as of December 31, 2022.

•Other selling, general and administrative expenses increased for the year ended December 31, 2023, largely due to both an increase in meeting and travel costs and acquisition-related growth.

•During the year ended December 31, 2023, we incurred $33.5 million of acquisition integration and deal costs within selling, general and administration expense in connection with the acquisition of US Ecology. The 2023 costs primarily related to the integration of certain software systems as well as rebranding of the business, while the 2022 costs included certain costs to close the acquisition.

Adjustment to Withdrawal Liability for Multiemployer Pension Funds

During the year ended December 31, 2023, we recorded a $4.5 million charge related to the withdrawal from a certain multiemployer pension plan. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

Gain on Business Divestitures and Impairments, Net

We strive to have a leading market position in each of the markets we serve, or have a clear path on how we will achieve a leading market position over time. Where we cannot establish a leading market position, or where operations are not generating acceptable returns, we may decide to divest certain assets and reallocate resources to other markets. Business divestitures could result in gains, losses or impairment charges that may be material to our results of operations in a given period.

During the years ended December 31, 2023 and 2022, we recorded a net gain on business divestitures and impairments of $3.6 million and $6.3 million, respectively.

Restructuring Charges

In 2023 and 2022, we incurred restructuring charges of $33.2 million and $27.0 million, respectively. Of the 2023 charges, $9.5 million is related to the early termination of certain leases and $23.7 million related to the redesign of our asset management, and customer and order management software systems. The 2022 charges primarily related to the redesign of our general ledger, budgeting and procurement enterprise resource planning systems, which was completed with the systems being placed into production in 2022. We paid $39.4 million and $19.8 million during 2023 and 2022, respectively, related to these restructuring efforts.

In 2024, we expect to incur restructuring charges of approximately $35 million, primarily related to the redesign of our customer billing and asset management software systems. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

Interest Expense

The following table provides the components of interest expense, including accretion of debt discounts and accretion of discounts primarily associated with environmental and risk insurance liabilities assumed in acquisitions for the years ended December 31, 2023 and 2022 (in millions of dollars):

20232022
Interest expense on debt$430.2$329.0
Non-cash interest85.871.6
Less: capitalized interest(7.8)(5.0)
Total interest expense$508.2$395.6

Total interest expense for 2023 increased compared to 2022 primarily due to additional outstanding debt on our term loan and revolving lines of credit used to fund the purchase of US Ecology and higher interest rates on our floating rate debt. The increase attributable to our fixed rate debt is primarily due to the issuance of additional senior notes used to refinance amounts outstanding under our term loan and revolving lines of credit and for general corporate purposes.

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Cash paid for interest, excluding net swap settlements for our fixed-to-floating and floating-to-fixed interest rate swaps, was $422.9 million and $311.5 million for the years ended December 31, 2023 and 2022, respectively.

As of December 31, 2023, we had $2,232.2 million of floating rate debt including floating rate swap contracts. If interest rates increased or decreased by 100 basis points on our variable rate debt, annualized interest expense and net cash payments for interest would increase or decrease by approximately $20 million.

Income Taxes

Our provision for income taxes was $460.1 million and $343.9 million for 2023 and 2022, respectively. Our effective tax rate, exclusive of non-controlling interests, for the years ended December 31, 2023 and 2022 was 21.0% and 18.8%, respectively. Net cash paid for income taxes was approximately $343 million and $185 million for the years ended December 31, 2023 and 2022, respectively.

During 2023, we acquired non-controlling interests in limited liability companies established to own renewable energy assets that qualified for investment tax credits under Section 48 of the Internal Revenue Code. We account for these investments using the equity method of accounting and recognize our share of income or loss and other reductions in the value of our investment in loss from unconsolidated equity method investments within our consolidated statements of income. For further discussion regarding our equity method accounting, see Note 3, Business Acquisitions, Investments and Restructuring Charges. Our 2023 tax provision reflects a benefit of $86.9 million due to the tax credits related to these investments.

In addition, during 2023 we resolved IRS examinations for our tax years 2014 - 2018 that, in the aggregate, reduced our tax provision by approximately $20.8 million.

Our 2022 tax provision was reduced by approximately $139 million related to the tax credits from our non-controlling interest in limited liability companies established to own renewable energy assets.

We have deferred tax assets related to state net operating loss carryforwards with an estimated tax effect of $64.5 million available as of December 31, 2023. These state net operating loss carryforwards expire at various times between 2024 and 2043. We believe that it is more likely than not that the benefit from some of our state net operating loss carryforwards will not be realized due to limitations on these loss carryforwards in certain states. In recognition of this risk, as of December 31, 2023, we have provided a valuation allowance of $43.4 million.

For additional discussion and detail regarding our income taxes, see Note 11, Income Taxes, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Reportable Segments

Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, referred to as Group 1, Group 2 and Group 3. Group 1 is our recycling and waste business operating primarily in geographic areas located in the western United States. Group 2 is our recycling and waste business operating primarily in geographic areas located in the southeastern and mid-western United States, the eastern seaboard of the United States, and Canada. Group 3 is our environmental solutions business operating primarily in geographic areas located across the United States and Canada. These groups are presented below as our reportable segments, which each provide integrated environmental services, including but not limited to collection, transfer, recycling and disposal.

Corporate entities and other include legal, tax, treasury, information technology, risk management, human resources, closed landfills and other administrative functions. National Accounts revenue included in Corporate entities and other represents the portion of revenue generated from nationwide and regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations. Revenue and overhead costs of Corporate entities and other are either specifically assigned or allocated on a rational and consistent basis among our reportable segments to calculate Adjusted EBITDA by reportable segment.

Adjusted EBITDA is the single financial measure our chief operating decision maker (CODM) uses to evaluate operating segment profitability and determine resource allocations. Summarized financial information regarding our reportable segments for the years ended December 31, 2023 and 2022 (in millions of dollars and as a percentage of revenue in the case of adjusted EBITDA margin) follows. For totals as well as further detail regarding our reportable segments and the adjustments used to calculate gross Adjusted EBITDA for each segment, see Note 15, Segment Reporting, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Group 1Group 2Recycling & Waste Subtotal (1)Group 3 (Environmental Solutions)Corporate entities and otherTotal
2023
Gross Revenue$7,769.2$7,563.2$15,332.4$1,703.6$242.7$17,278.7
Intercompany Revenue(1,170.8)(1,008.4)(2,179.2)(58.8)(76.2)(2,314.2)
Revenue Allocations95.890.6186.4(19.9)(166.5)
Net Revenue$6,694.2$6,645.4$13,339.6$1,624.9$$14,964.5
Adjusted EBITDA$2,134.7$1,964.0$4,098.7$348.4$$4,447.1
Capital Expenditures$707.4$540.1$1,247.5$146.2$237.4$1,631.1
Total Assets$13,665.1$10,959.5$24,624.6$4,481.3$2,304.2$31,410.1
2022
Gross Revenue$7,106.6$7,028.6$14,135.2$1,262.5$247.5$15,645.2
Intercompany Revenue(1,089.6)(945.0)$(2,034.6)(46.6)(52.7)(2,133.9)
Revenue Allocations103.599.0$202.5(7.7)(194.8)
Net Revenue$6,120.5$6,182.6$12,303.1$1,208.2$$13,511.3
Adjusted EBITDA$1,967.4$1,750.8$3,718.2$211.1$$3,929.3
Capital Expenditures$620.1$533.5$1,153.6$141.7$158.7$1,454.0
Total Assets$12,418.1$10,509.8$22,927.9$4,086.3$2,038.7$29,052.9

(1) The Recycling & Waste Subtotal represents the combined results of our Group 1 and Group 2 reportable segments.

Significant changes in the revenue and Adjusted EBITDA of our reportable segments for 2023 compared to 2022 are discussed below.

Group 1

Adjusted EBITDA in Group 1 increased from $1,967.4 million for the year ended December 31, 2022 to $2,134.7 million for the year ended December 31, 2023.

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The most significant items impacting adjusted EBITDA in Group 1 during the year ended December 31, 2023 compared to the year ended December 31, 2022 include:

•Net revenue for the year ended December 31, 2023 increased 9.4% from 2022 due to an increase in average yield in all lines of business and volume in our collection and landfill lines of business, partially offset by volume declines in our transfer line of business. The increase in landfill volume was attributable to an increase in special waste, solid waste and construction and demolition volumes. Revenue also increased due to acquisition-related growth.

•Cost of operations increased due to an increase in labor and third party maintenance costs due to inflationary pressures. The unfavorable impact was partially offset by decreases in fuel costs due to a decrease in average fuel cost per gallon.

Group 2

Adjusted EBITDA in Group 2 increased from $1,750.8 million for the year ended December 31, 2022 to $1,964.0 million for the year ended December 31, 2023.

The most significant items impacting adjusted EBITDA in Group 2 during the year ended December 31, 2023 compared to the year ended December 31, 2022 include:

•Net revenue for the year ended December 31, 2023 increased 7.5% from 2022 due to an increase in average yield in all lines of business. Additionally, volume increased in our landfill and small-container collection lines of business, partially offset by declines in our large-container and residential collection lines of business. The increase in landfill volume was primarily attributable to an increase in special waste volume, which was partially offset by a decline in solid waste, and construction and demolition volumes. Revenue also increased due to acquisition-related growth.

•Cost of operations increased due to an increase in labor and maintenance costs due to inflationary pressures. The unfavorable impact was partially offset by decreases in fuel costs due to a decrease in average fuel cost per gallon.

Group 3

Adjusted EBITDA in Group 3 increased from $211.1 million for the year ended December 31, 2022 to $348.4 million for the year ended December 31, 2023.

The most significant items impacting adjusted EBITDA in Group 3 during the year ended December 31, 2023 compared to the year ended December 31, 2022 include:

•Revenue for the year ended December 31, 2023 increased due to acquisition-related growth, specifically the acquisition of US Ecology. We closed the acquisition of US Ecology in May 2022. Revenue was also impacted by favorable pricing.

•In 2023, we continued to realize cost synergies associated with the US Ecology acquisition.

Landfill and Environmental Matters

Our landfill costs include daily operating expenses, costs of capital for cell development, costs for final capping, closure and post-closure and the legal and administrative costs of ongoing environmental compliance. Daily operating expenses include leachate treatment, transportation and disposal costs, methane gas and groundwater monitoring and system maintenance costs, interim cap maintenance costs and costs associated with applying daily cover materials. We expense all indirect landfill development costs as they are incurred. We use life cycle accounting and the units-of-consumption method to recognize certain direct landfill costs related to landfill development. In life cycle accounting, certain direct costs are capitalized and charged to depletion expense based on the consumption of cubic yards of available airspace. These costs include all costs to acquire and construct a site, including excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection and monitoring systems, installation of groundwater monitoring wells and other costs associated with acquiring and developing the site. Obligations associated with final capping, closure and post-closure are capitalized and amortized on a units-of-consumption basis as airspace is consumed.

Cost and airspace estimates are developed at least annually by engineers. Our operating and accounting personnel use these estimates to adjust the rates we use to expense capitalized costs. Changes in these estimates primarily relate to changes in cost estimates, available airspace, inflation and applicable regulations. Changes in available airspace include changes in engineering estimates, changes in design and changes due to the addition of airspace lying in expansion areas that we believe have a probable likelihood of being permitted. Changes in engineering estimates typically include modifications to the available disposal capacity of a landfill based on a refinement of the capacity calculations resulting from updated information.

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Available Airspace

As of December 31, 2023, we owned or operated 207 active landfills with total available disposal capacity estimated to be 5.1 billion in-place cubic yards. For these landfills, the following table reflects changes in capacity and remaining capacity, as measured in cubic yards of airspace as of December 31, 2023.

Balance as of December 31, 2022New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2023
Cubic yards (in millions):
Permitted airspace4,816.839.647.4(85.9)3.44,821.3
Probable expansion airspace197.5124.5(39.3)282.7
Total cubic yards (in millions)5,014.3124.539.68.1(85.9)3.45,104.0
Number of sites:
Permitted airspace2063(2)207
Probable expansion airspace133(2)14

The following table reflects changes in capacity and remaining capacity for these landfills, as measured in cubic yards of airspace, as of December 31, 2022.

Balance as of December 31, 2021New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2022
Cubic yards (in millions):
Permitted airspace4,826.775.23.3(85.0)(3.4)4,816.8
Probable expansion airspace186.014.6(3.1)197.5
Total cubic yards (in millions)5,012.714.675.20.2(85.0)(3.4)5,014.3
Number of sites:
Permitted airspace19810(2)206
Probable expansion airspace113(1)13

Total available disposal capacity represents the sum of estimated permitted airspace plus an estimate of probable expansion airspace. Engineers develop these estimates at least annually using information provided by annual aerial surveys. Before airspace included in an expansion area is determined to be probable expansion airspace and, therefore, included in our calculation of total available disposal capacity, it must meet all of our expansion criteria. See Note 2, Summary of Significant Accounting Policies, and Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Item 8 of this Annual Report on Form 10-K for further information. Also see our Critical Accounting Judgments and Estimates section of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

As of December 31, 2023, 14 of our landfills met all of our criteria for including their probable expansion airspace in their total available disposal capacity. At projected annual volumes, these 14 landfills have an estimated remaining average site life of 52 years, including probable expansion airspace. The average estimated remaining life of all of our landfills is 57 years. We have other expansion opportunities that are not included in our total available airspace because they do not meet all of our criteria for treatment as probable expansion airspace.

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The following table reflects the estimated operating lives of our active landfill sites based on available and probable disposal capacity using current annual volumes as of December 31, 2023:

Number of Sites without Probable Expansion AirspaceNumber of Sites with Probable Expansion AirspaceTotal SitesPercent of Total
0 to 5 years212110.1%
6 to 10 years222210.6
11 to 20 years3153617.4
21 to 40 years5045426.1
41+ years6957435.8
Total19314207100.0%

Final Capping, Closure and Post-Closure Costs

As of December 31, 2023, accrued final capping, closure and post-closure costs were $1,937.2 million, of which $72.4 million were current and $1,864.8 million were long-term as reflected in our consolidated balance sheets in accrued landfill and environmental costs included in Part II, Item 8 of this Annual Report on Form 10-K.

Remediation and Other Charges for Landfill Matters

It is reasonably possible that we will need to adjust our accrued landfill and environmental liabilities to reflect the effects of new or additional information, to the extent that such information impacts the costs, timing or duration of the required actions. Future changes in our estimates of the costs, timing or duration of the required actions could have a material adverse effect on our consolidated financial position, results of operations and cash flows.

For a description of our significant remediation matters, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Investment in Landfills

As of December 31, 2023, we expect to spend an estimated additional $11.2 billion on existing landfills, primarily related to cell construction and environmental structures, over their remaining lives. Our total expected investment, excluding non-depletable land, estimated to be $15.9 billion, or $3.12 per cubic yard, is used in determining our depletion and amortization expense based on airspace consumed using the units-of-consumption method.

The following table reflects our future expected investment as of December 31, 2023 (in millions):

Balance as of December 31, 2023Expected Future InvestmentTotal Expected Investment
Non-depletable landfill land$200.0$$200.0
Landfill development costs9,911.211,182.521,093.7
Construction-in-progress – landfill350.4350.4
Accumulated depletion and amortization(5,516.2)(5,516.2)
Net investment in landfill land and development costs$4,945.4$11,182.5$16,127.9

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The following table reflects our net investment in our landfills, excluding non-depletable land, and our depletion, amortization and accretion expense for the years ended December 31, 2023 and 2022:

20232022
Number of landfills owned or operated207206
Net investment, excluding non-depletable land (in millions)$4,745.4$4,873.6
Total estimated available disposal capacity (in millions of cubic yards)5,104.05,014.3
Net investment per cubic yard$0.93$0.97
Landfill depletion and amortization expense (in millions)$470.9$433.7
Accretion expense (in millions)97.989.6
568.8523.3
Airspace consumed (in millions of cubic yards)85.985.0
Depletion, amortization and accretion expense per cubic yard of airspace consumed$6.62$6.16

During 2023 and 2022, our average compaction rate was approximately 2,000 pounds per cubic yard based primarily on a three-year historical moving average.

Property and Equipment

The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2023 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2022Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2023
Land$779.7$4.1$(2.4)$95.5$$$1.2$878.1
Landfill development costs9,574.29.0(13.5)(137.7)61.440.2377.69,911.2
Vehicles and equipment9,465.3748.7(347.5)160.6204.810,231.9
Buildings and improvements1,704.677.8(13.8)63.290.11,921.9
Construction-in-progress - landfill358.3440.0(38.6)(409.3)350.4
Construction-in-progress - other358.6455.828.0(288.8)553.6
Total$22,240.7$1,735.4$(377.2)$171.0$61.4$40.2$(24.4)$23,847.1
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2022Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2023
Landfill development costs$(5,058.9)$(466.2)$13.5$$(5.1)$0.5$(5,516.2)
Vehicles and equipment(5,679.9)(812.4)336.75.92.0(6,147.7)
Buildings and improvements(757.9)(88.5)7.07.1(832.3)
Total$(11,496.7)$(1,367.1)$357.2$5.9$(5.1)$9.6$(12,496.2)

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The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2022 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2021Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2022
Land$694.9$2.4$(1.7)$85.0$$$(0.9)$779.7
Landfill development costs8,539.614.5590.460.120.2349.49,574.2
Vehicles and equipment8,576.9759.6(272.6)300.0101.49,465.3
Buildings and improvements1,508.457.9(10.0)126.921.41,704.6
Construction-in-progress - landfill279.3390.938.6(350.5)358.3
Construction-in-progress - other182.9338.0(0.2)(1.1)(161.0)358.6
Total$19,782.0$1,563.3$(284.5)$1,139.8$60.1$20.2$(40.2)$22,240.7
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2021Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2022
Landfill development costs$(4,625.6)$(440.1)$$(1.6)$5.7$2.7$(5,058.9)
Vehicles and equipment(5,231.6)(735.9)265.77.614.3(5,679.9)
Buildings and improvements(692.7)(79.4)6.90.66.7(757.9)
Total$(10,549.9)$(1,255.4)$272.6$6.6$5.7$23.7$(11,496.7)

Liquidity and Capital Resources

Cash and Cash Equivalents

The following is a summary of our cash and cash equivalents and restricted cash and marketable securities balances as of December 31:

20232022
Cash and cash equivalents$140.0$143.4
Restricted cash and marketable securities163.6127.6
Less: restricted marketable securities(76.1)(56.7)
Cash, cash equivalents, restricted cash and restricted cash equivalents$227.5$214.3

Our restricted cash and marketable securities include amounts pledged to regulatory agencies and governmental entities as financial guarantees of our performance under certain collection, landfill and transfer station contracts and permits, and relating to our final capping, closure and post-closure obligations at our landfills as well as restricted cash and marketable securities related to our insurance obligations.

The following table summarizes our restricted cash and marketable securities as of December 31:

20232022
Capping, closure and post-closure obligations43.239.1
Insurance120.488.5
Total restricted cash and marketable securities$163.6$127.6

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Material Cash Requirements and Intended Uses of Cash

We expect existing cash, cash equivalents, restricted cash and marketable securities, cash flows from operations and financing activities to continue to be sufficient to fund our operating activities and cash commitments for investing and financing activities for at least the next 12 months and thereafter for the foreseeable future. Our known current- and long-term uses of cash include, among other possible demands: (1) capital expenditures and leases, (2) acquisitions, (3) dividend payments, (4) repayments to service debt and other long-term obligations, (5) payments for asset retirement obligations and environmental liabilities and (6) share repurchases.

Capital Expenditures and Leases

We make investments in property and equipment primarily to allow for growth of our service offerings. These investments are largely concentrated in vehicles and equipment and costs to construct our landfills. We expect to receive between $1.760 billion to $1.800 billion of property and equipment, net of proceeds from the sale of property and equipment, in 2024.

We lease property and equipment in the ordinary course of business under various lease agreements. The most significant lease obligations are for real property and equipment specific to our industry, including property operated as a landfill or transfer station and operating equipment. As of December 31, 2023, the amount of total future lease payments under operating and finance leases was $290.4 million and $433.6 million, respectively. For additional detail regarding our lease obligations, see Note 10, Leases, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Acquisitions

Our acquisition growth strategy focuses primarily on acquiring privately held recycling and waste companies and environmental solutions businesses that complement our existing business platform. We continue to invest in value-enhancing acquisitions in existing markets.

We expect to invest at least $500 million in acquisitions in 2024.

Dividend Payments

In October 2023 our Board of Directors approved a quarterly dividend of $0.535 per share. Aggregate cash dividends declared were $650.0 million for the year ended December 31, 2023. As of December 31, 2023, we recorded a quarterly dividend payable of $168.3 million to shareholders of record at the close of business on January 2, 2024, which was paid on January 13, 2024.

Debt and other long-term obligations

Debt repayments may include purchases of our outstanding indebtedness in the secondary market or otherwise. We believe that our excess cash, cash from operating activities and our availability to draw on our credit facilities provide us with sufficient financial resources to meet our anticipated capital requirements and maturing obligations as they come due.

We may choose to voluntarily retire certain portions of our outstanding debt before their maturity dates using cash from operations or additional borrowings. We may also explore opportunities in the capital markets to fund redemptions should market conditions be favorable. Early extinguishment of debt will result in an impairment charge in the period in which the debt is repaid. The loss on early extinguishment of debt relates to premiums paid to effectuate the repurchase and the relative portion of unamortized note discounts and debt issue costs.

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500.0 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion, and in October 2023, was subsequently increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of December 31, 2023 was 5.508% with a weighted average maturity of approximately 18 days. In the event of a failed re-borrowing, we currently have availability under our Credit Facility (as defined below) to fund the amounts borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2023.

As of December 31, 2023, the total principal value of our debt was $12.9 billion, of which $932.3 million is due in 2024.

We have several agreements that require us to dispose of a minimum number of tons at third-party disposal facilities. Under these put-or-pay agreements, we must pay for agreed-upon minimum volumes regardless of the actual number of tons placed at the facilities.

Our unconditional purchase commitments have varying expiration dates, with some extending through the remaining life of the respective landfill. Future minimum payments under unconditional purchase commitments consist primarily of (1) disposal related agreements, which include fixed or minimum royalty payments, host agreements and take-or-pay and put-or-pay

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agreements and (2) other obligations including committed capital expenditures and consulting service agreements. As of December 31, 2023, such purchase commitments, which do not qualify for recognition on our Consolidated Balance Sheets, amount to $974.3 million, of which $205.2 million was short-term.

For additional detail regarding our debt and known contractual and other obligations, see Note 9, Debt, and Note 19, Commitments and Contingencies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Asset Retirement Obligations and Environmental Liabilities

We have future obligations for final capping, closure and post-closure costs with respect to the landfills we own or operate as set forth in applicable landfill permits. As of December 31, 2023, our future obligations for final capping, closure and post-closure costs totaled $1.9 billion, of which $72.4 million was short-term.

Additionally, we are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. As of December 31, 2023, our environmental liabilities totaled $485.4 million, of which $69.2 million was short-term.

For additional detail regarding our asset retirement obligations and environmental liabilities, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Share Repurchases

In October 2020, our Board of Directors approved a $2.0 billion share repurchase authorization effective starting January 1, 2021 and extending through December 31, 2023. In October 2023, our Board of Directors approved a $3.0 billion share repurchase authorization effective starting January 1, 2024 and extending through December 31, 2026. Share repurchases under the current program may be made through open market purchases or privately negotiated transactions in accordance with applicable federal securities laws. While the Board of Directors has approved the program, the timing of any purchases, the prices and the number of shares of common stock to be purchased will be determined by our management, at its discretion, and will depend upon market conditions and other factors. The share repurchase program may be extended, suspended or discontinued at any time. As of December 31, 2023, the remaining authorized purchase capacity under our October 2023 repurchase program was $3.0 billion.

Summary of Cash Flow Activity

The major components of changes in cash flows for 2023 and 2022 are discussed in the following paragraphs. The following table summarizes our cash flow from operating activities, investing activities and financing activities for the years ended December 31, 2023 and 2022 (in millions of dollars):

20232022
Net cash provided by operating activities$3,617.8$3,190.0
Net cash used in investing activities$(3,666.8)$(4,423.0)
Net cash provided by (used in) financing activities$61.9$1,344.2

Cash Flows Provided by Operating Activities

The most significant items affecting the comparison of our operating cash flows for 2023 and 2022 are summarized below.

Changes in assets and liabilities, net of effects from business acquisitions and divestitures, decreased our cash flow from operations by $90.6 million in 2023, compared to a decrease of $231.0 million during the same period in 2022, primarily as a result of the following:

•Our accounts receivable, exclusive of the change in allowance for doubtful accounts and customer credits, increased $71.3 million during 2023, due to the timing of billings net of collections, compared to a $198.8 million increase in the same period in 2022. As of December 31, 2023, our days sales outstanding were 42.0, or 30.9 days net of deferred revenue, compared to 43.3, or 31.8 days net of deferred revenue, as of December 31, 2022.

•Our prepaid expenses and other assets increased $29.8 million in 2023 compared to an $83.8 million increase in 2022, primarily attributable to changes in our prepaid taxes due to timing of our estimated tax payments and an increase in costs associated with cloud-based hosting arrangements. Cash paid for income taxes was $343 million and $185 million for 2023 and 2022, respectively. Income taxes paid in 2023 and 2022 reflected benefits from tax credits from our continuing investments in renewable energy.

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•Our accounts payable increased $82.8 million during 2023 compared to a $106.4 million increase during 2022, due to the timing of payments.

•Cash paid for capping, closure and post-closure obligations was $60.8 million during 2023 compared to $64.6 million for 2022. The decrease in cash paid for capping, closure and post-closure obligations is primarily due to the timing of capping and post-closure payments at certain of our landfill sites.

•Cash paid for remediation obligations was $0.2 million higher during 2023 compared to 2022.

In addition, cash paid for interest was $422.9 million and $311.5 million, excluding net swap settlements for our fixed to floating interest rate swaps, for 2023 and 2022, respectively.

We use cash flows from operations to fund capital expenditures, acquisitions, dividend payments, debt repayments and share repurchases.

Cash Flows Used in Investing Activities

The most significant items affecting the comparison of our cash flows used in investing activities for 2023 and 2022 are summarized below:

•Capital expenditures during 2023 were $1,631.1 million as compared to $1,454.0 million for 2022.

•Proceeds from sales of property and equipment during 2023 were $29.2 million as compared to $32.8 million for 2022.

•During 2023 and 2022, we used $2,065.3 million and $3,038.5 million, respectively, for acquisitions and investments, net of cash acquired, including the cash used for the acquisition of US Ecology in 2022. During 2023 and 2022, we received $6.4 million and $50.6 million from business divestitures, respectively.

We intend to finance capital expenditures and acquisitions through cash on hand, restricted cash held for capital expenditures, cash flows from operations, our revolving credit facilities and tax-exempt bonds and other financings.

Cash Flows Used in Financing Activities

The most significant items affecting the comparison of our cash flows used in financing activities for 2023 and 2022 are summarized below:

•During 2023, we issued $2,200.0 million of senior notes for cash proceeds, net of discounts and fees, of $2,172.3 million. We issued no senior notes during 2022. Net payments of notes payable and long-term debt were $1,189.7 million during 2023, compared to net proceeds of $2,164.6 million in 2022. For a more detailed discussion, see the Financial Condition section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

•During 2023, we repurchased 1.8 million shares of our stock for $261.8 million. During 2022, we repurchased 1.6 million shares of our stock for $203.5 million.

•In July 2023, our Board of Directors approved an increase in our quarterly dividend to $0.535 per share. Dividends paid were $638.1 million and $592.9 million in 2023 and 2022, respectively.

•During 2023 and 2022, cash paid for purchase price holdback releases and contingent purchase price related to acquisitions was $19.6 million and $9.6 million, respectively.

Financial Condition

Debt Obligations

As of December 31, 2023, we had $932.3 million of principal debt maturing within the next 12 months, which includes certain finance lease obligations. All of our tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield, with the exception of one tax-exempt financing with an initial remarketing period of 10 years. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agent is unable to remarket our bonds, the remarketing agent can put the bonds to us. In the event of a failed remarketing, as of December 31, 2023, we had availability under our $3.5 billion unsecured revolving credit facility to fund these bonds until they are remarketed successfully. In the event of a failed re-borrowing under our commercial paper program, we currently have availability under our Credit Facility to fund the amounts borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these tax-exempt financings and commercial paper program borrowings as long-term in our consolidated balance sheet as of December 31, 2023.

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For further discussion of the components of our overall debt, see Note 9, Debt, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Credit Facilities

Uncommitted Credit Facility

In January 2022, we entered into a $200.0 million unsecured uncommitted revolving credit facility (the Uncommitted Credit Facility). The Uncommitted Credit Facility bears interest at an annual percentage rate to be agreed upon by both parties. Borrowings under the Uncommitted Credit Facility can be used for working capital, letters of credit and other general corporate purposes. The agreement governing our Uncommitted Credit Facility requires us to comply with certain covenants. The Uncommitted Credit Facility may be terminated by either party at any time. As of December 31, 2023 and 2022, we had no borrowings outstanding under our Uncommitted Credit Facility.

The Credit Facility

In August 2021, we entered into a $3.0 billion unsecured revolving credit facility (the Credit Facility). Borrowings under the Credit Facility mature in August 2026. As permitted by the Credit Facility, we have the right to request two one-year extensions of the maturity date, but none of the lenders are committed to participate in such extension. The Credit Facility also includes a feature that allows us to increase availability, at our option, by an aggregate amount of up to $1.0 billion through increased commitments from existing lenders or the addition of new lenders. In October 2023, we completed an upsize of the Credit Facility to $3.5 billion.

In February 2023, we entered into Amendment No. 1 to the Credit Facility (the Credit Facility Amendment) to add our subsidiary, USE Canada Holdings, Inc. (the Canadian Borrower), as an additional borrower under the Credit Facility. The Credit Facility Amendment provides that the aggregate of (i) all loans to the Canadian Borrower and (ii) all loans denominated in Canadian dollars cannot exceed $1.0 billion (the Canadian Sublimit). The Canadian Sublimit is part of, and not in addition to, the aggregate commitments under the Credit Facility.

Borrowings under the Credit Facility in United States dollars bear interest at a Base Rate, a daily floating SOFR or a term SOFR plus a current applicable margin of 0.910% based on our Debt Ratings (all as defined in the Credit Facility agreement). The Canadian dollar-denominated loans bear interest based on the Canadian Prime Rate or the Canadian Dollar Offered Rate plus a current applicable margin of 0.910% based on our Debt Ratings. As of December 31, 2023, $201.5 million was outstanding against the Canadian Sublimit, with an average interest rate of 6.364%.

The Credit Facility is subject to facility fees based on applicable rates defined in the Credit Facility agreement and the aggregate commitment, regardless of usage. The Credit Facility can be used for working capital, capital expenditures, acquisitions, letters of credit and other general corporate purposes. The Credit Facility agreement requires us to comply with financial and other covenants. We may pay dividends and repurchase common stock if we are in compliance with these covenants.

We had $297.1 million and $250.0 million outstanding under our Credit Facility as of December 31, 2023 and 2022, respectively. We had $336.5 million and $347.6 million of letters of credit outstanding under our Credit Facility as of December 31, 2023 and 2022, respectively. We also had $495.3 million and $1.0 billion of principal borrowings outstanding (net of related discount on issuance) under our commercial paper program as of December 31, 2023 and 2022, respectively. As a result, availability under our Credit Facility was $2,371.2 million and $1,402.4 million as of December 31, 2023 and 2022, respectively.

Financial and Other Covenants

The Credit Facility requires us to comply with financial and other covenants. To the extent we are not in compliance with these covenants, we cannot pay dividends or repurchase common stock. Compliance with covenants also is a condition for any incremental borrowings under the Credit Facility, and failure to meet these covenants would enable the lenders to require repayment of any outstanding loans (which would adversely affect our liquidity). Additionally, if we are not in compliance with these covenants, we could not use the availability under our Credit Facility to fund borrowings we currently make under our commercial paper program, if there is a failed reborrowing under that program. The Credit Facility provides that our total debt to EBITDA ratio may not exceed 3.75 to 1.00 as of the last day of any fiscal quarter. In the case of an "elevated ratio period", which may be elected by us if one or more acquisitions during a fiscal quarter involve aggregate consideration in excess of $200.0 million (the Trigger Quarter), the total debt to EBITDA ratio may not exceed 4.25 to 1.00 during the Trigger Quarter and for the three fiscal quarters thereafter. The Credit Facility also provides that there may not be more than two elevated ratio periods during the term of the Credit Facility agreement. As of December 31, 2023, our total debt to EBITDA ratio was approximately 2.9 compared to the 3.75 maximum allowed. As of December 31, 2023, we were in compliance with all other covenants under our Credit Facility.

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EBITDA, which is a non-U.S. GAAP measure, is calculated as defined in our Credit Facility agreement. In this context, EBITDA is used solely to provide information regarding the extent to which we are in compliance with debt covenants and is not comparable to EBITDA used by other companies or used by us for other purposes.

Failure to comply with the financial and other covenants under the Credit Facility, as well as the occurrence of certain material adverse events, would constitute defaults and would allow the lenders under the Credit Facility to accelerate the maturity of all indebtedness under the Credit Facility. This could have an adverse effect on the availability of financial assurances. In addition, maturity acceleration on the Credit Facility constitutes an event of default under our other debt and derivative instruments, including our senior notes, and, therefore, our senior notes would also be subject to acceleration of maturity. If such acceleration were to occur, we would not have sufficient liquidity available to repay the indebtedness. We would likely have to seek an amendment under the Credit Facility for relief from the financial covenant or repay the debt with proceeds from the issuance of new debt or equity, or asset sales, if necessary. We may be unable to amend the Credit Facility or raise sufficient capital to repay such obligations in the event the maturity is accelerated.

Term Loan Facility

On April 29, 2022, we entered into a $1.0 billion unsecured Term Loan Facility (Term Loan Facility), which will mature on April 29, 2025. The Term Loan Facility bears interest at a base rate or a forward-looking SOFR, plus an applicable margin based on our debt ratings. The current interest rate for borrowings outstanding as of December 31, 2023 was 6.256%. We may prepay, without penalty, all or any part of the borrowings under the Term Loan Facility at any time.

On May 2, 2022, we completed the acquisition of US Ecology using proceeds from the Term Loan Facility and borrowings under the Credit Facility.

We had $500.0 million and $1.0 billion of borrowings outstanding under the Term Loan Facility as of December 31, 2023 and 2022, respectively.

Commercial Paper Program

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500.0 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion, and in October 2023, was subsequently increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of December 31, 2023 was 5.508% with a weighted average maturity of approximately 18 days.

We had $496.0 million and $1.0 billion principal value of commercial paper issued and outstanding under the program as of December 31, 2023 and 2022, respectively. In the event of a failed re-borrowing, we currently have availability under our Credit Facility (as defined above) to fund amounts currently borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2023 and 2022.

Senior Notes and Debentures

In March 2023, we issued $400.0 million of 4.875% senior notes due 2029 (the Existing 2029 Notes) and $800.0 million of 5.000% senior notes due 2034 (the 2034 Notes, and together, the Notes). The Notes are unsecured and unsubordinated and rank equally with our other unsecured obligations. We used the proceeds from the Notes for general corporate purposes, including the repayment of a portion of amounts outstanding under the Uncommitted Credit Facility, the Commercial Paper Program, the Credit Facility, and the Term Loan Facility. As a result of the Term Loan Facility repayment, we incurred a non-cash loss on the early extinguishment of debt related to the ratable portion of unamortized deferred issuance costs of $0.2 million.

In December 2023, we issued an additional $350.0 million of 4.875% senior notes due 2029 (the New 2029 Notes, and together with the Existing 2029 Notes, the 2029 Notes). After giving effect to the issuance of the New 2029 Notes, $750.0 million in aggregate principal amount of the 2029 Notes is outstanding. The New 2029 Notes are fungible with the Existing 2029 Notes, and taken together, the 2029 Notes are treated as a single series.

In December 2023, we also issued $650.0 million of 5.000% senior notes due 2033 (the 2033 Notes). Similar to the Notes above, the proceeds of these new senior notes were used for general corporate purposes, including the repayment of a portion of amounts outstanding under the Uncommitted Credit Facility, the Commercial Paper Program, the Credit Facility, and the Term Loan Facility.

Our senior notes and debentures are general unsecured obligations. Interest is payable semi-annually.

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Derivative Instruments and Hedging Relationships

Our ability to obtain financing through the capital markets is a key component of our financial strategy. Historically, we have managed risk associated with executing this strategy, particularly as it relates to fluctuations in interest rates, by using a combination of fixed and floating rate debt. From time to time, we also have entered into interest rate swap and lock agreements to manage risk associated with interest rates, either to effectively convert specific fixed rate debt to a floating rate (fair value hedges), or to lock interest rates in anticipation of future debt issuances (cash flow hedges). We also acquired and novated a floating-to-fixed interest rate swap designated as a cash flow hedge in connection with our acquisition of US Ecology.

Additionally, we amended certain interest rate lock agreements, extending the mandatory maturity date and dedesignated them as cash flow hedges (the Extended Interest Rate Locks). In addition, we entered into offsetting interest rate swaps to offset future exposures to fair value fluctuations of the Extended Interest Rate Locks.

For a description of our derivative contracts and hedge accounting, see Note 9, Debt, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Tax-Exempt Financings

As of December 31, 2023, we had $1,280.6 million of certain variable rate tax-exempt financings outstanding, with maturities ranging from 2024 to 2053. As of December 31, 2022, we had $1,182.0 million of certain variable rate tax-exempt financings outstanding, with maturities ranging from 2023 to 2051.

Finance Leases

As of December 31, 2023, we had finance lease liabilities of $251.3 million with maturities ranging from 2024 to 2063. As of December 31, 2022, we had finance lease liabilities of $247.5 million with maturities ranging from 2023 to 2063.

Credit Ratings

Our continued access to the debt capital markets and to new financing facilities, as well as our borrowing costs, depend on multiple factors, including market conditions, our operating performance and maintaining strong credit ratings. As of December 31, 2023, our credit ratings were BBB+, Baa1 and A- by Standard & Poor’s Ratings Services, Moody’s Investors Service and Fitch Ratings, Inc., respectively. If our credit ratings were downgraded, especially any downgrade to below investment grade, our ability to access the debt markets with the same flexibility that we have experienced historically, our cost of funds and other terms for new debt issuances could be adversely impacted.

Off-Balance Sheet Arrangements

We have no off-balance sheet debt or similar obligations, other than short-term operating leases and financial assurances, which are not classified as debt. We have no transactions or obligations with related parties that are not disclosed, consolidated into or reflected in our reported financial position or results of operations. We have not guaranteed any third-party debt.

Seasonality and Severe Weather

Our operations can be adversely affected by periods of inclement or severe weather, which could increase the volume of waste collected under our existing contracts (without corresponding compensation), delay the collection and disposal of waste, reduce the volume of waste delivered to our disposal sites, or delay the construction or expansion of our landfills and other facilities. Our operations also can be favorably affected by severe weather, which could increase the volume of waste in situations where we are able to charge for our additional services.

Contingencies

For a description of our commitments and contingencies, see Note 8, Landfill and Environmental Costs, Note 11, Income Taxes and Note 19, Commitments and Contingencies, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Financial Assurance

We must provide financial assurance to governmental agencies and a variety of other entities under applicable environmental regulations relating to our landfill operations for capping, closure and post-closure costs, and related to our performance under certain collection, landfill and transfer station contracts. We satisfy these financial assurance requirements by providing surety bonds, letters of credit, or insurance policies (Financial Assurance Instruments), or trust deposits, which are included in restricted cash and marketable securities and other assets in our consolidated balance sheets. The amount of the financial assurance requirements for capping, closure and post-closure costs is determined by applicable state environmental regulations. The financial assurance requirements for capping, closure and post-closure costs may be associated with a portion of the landfill

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or the entire landfill. Generally, states require a third-party engineering specialist to determine the estimated capping, closure and post-closure costs that are used to determine the required amount of financial assurance for a landfill. The amount of financial assurance required can, and generally will, differ from the obligation determined and recorded under U.S. GAAP. The amount of the financial assurance requirements related to contract performance varies by contract. Additionally, we must provide financial assurance for our insurance program and collateral for certain performance obligations. We do not expect a material increase in financial assurance requirements during 2024, although the mix of Financial Assurance Instruments may change.

These Financial Assurance Instruments are issued in the normal course of business and are not classified as indebtedness. Because we currently have no liability for the Financial Assurance Instruments, they are not reflected in our consolidated balance sheets; however, we record capping, closure and post-closure liabilities and insurance liabilities as they are incurred.

Critical Accounting Judgments and Estimates

Our consolidated financial statements have been prepared in accordance with U.S. GAAP and necessarily include certain estimates and judgments made by management. The following is a list of accounting policies that we believe are the most critical in understanding our consolidated financial position, results of operations and cash flows and that may require management to make subjective or complex judgments about matters that are inherently uncertain. Our critical accounting estimates are those estimates that involve a significant level of uncertainty at the time the estimate was made, and changes in them have had or are reasonably likely to have a material effect on our financial condition or results of operations. Accordingly, actual results could differ materially from our estimates. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Such critical accounting policies, estimates and judgments are applicable to all of our operating segments.

We have noted examples of the estimates that are subject to uncertainty in the accounting for these areas below.

Landfill Accounting

Landfill operating costs are treated as period expenses and are not discussed further in this section.

Our landfill assets and liabilities fall into the following two categories, each of which requires accounting judgments and estimates:

•Landfill development costs that are capitalized as an asset.

•Landfill retirement obligations relating to our capping, closure and post-closure liabilities that result in a corresponding landfill retirement asset.

We use life-cycle accounting and the units-of-consumption method to recognize landfill development costs over the life of the site. In life-cycle accounting, all current and future capitalized costs to acquire and construct a site are calculated and charged to expense based on the consumption of cubic yards of available airspace. Obligations associated with final capping, closure and post-closure are also capitalized and amortized on a units-of-consumption basis as airspace is consumed. Cost and airspace estimates are developed at least annually by engineers.

Landfill Development Costs

As of December 31, 2023 and 2022, we had net landfill development costs of $4,745.4 million and $4,873.6 million, respectively. Changes in these estimates may be sensitive to changes in cost estimates, inflation and applicable regulations.

Site permits. To develop, construct and operate a landfill, we must obtain permits from various regulatory agencies at the local, state and federal levels. The permitting process requires an initial site study to determine whether the location is feasible for landfill operations. The initial studies are reviewed by our environmental management group and then submitted to the regulatory agencies for approval. During the development stage we capitalize certain costs that we incur after site selection but before the receipt of all required permits if we believe that it is probable that the site will be permitted.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements may cause changes to the landfill site permitting process. These changes could make it more difficult and costly to obtain and maintain a landfill permit.

•Studies performed could be inaccurate, which could result in the denial or revocation of a permit and changes to accounting assumptions. Conditions could exist that were not identified in the study, which may make the location not feasible for a landfill and could result in the denial of a permit. Denial or revocation of a permit could impair the recorded value of the landfill asset.

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•Actions by neighboring parties, private citizen groups or others to oppose our efforts to obtain, maintain or expand permits could result in denial, revocation or suspension of a permit, which could adversely impact the economic viability of the landfill and could impair the recorded value of the landfill. As a result of opposition to our obtaining a permit, improved technical information as a project progresses, or changes in the anticipated economics associated with a project, we may decide to reduce the scope of, or abandon, a project, which could result in an asset impairment.

Technical landfill design. Upon receipt of initial regulatory approval, technical landfill designs are prepared. The technical designs, which include the detailed specifications to develop and construct all components of the landfill including the types and quantities of materials that will be required, are reviewed by our environmental management group. The technical designs are submitted to the regulatory agencies for approval. Upon approval of the technical designs, the regulatory agencies issue permits to develop and operate the landfill.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements may require changes in the landfill technical designs. These changes could make it more difficult and costly to meet new design standards.

•Technical design requirements, as approved, may need modifications at some future point in time.

•Technical designs could be inaccurate and could result in increased construction costs, difficulty in obtaining a permit or the use of rates to recognize the amortization of landfill development costs and asset retirement obligations that are not appropriate.

Permitted and probable landfill disposal capacity. Included in the technical designs are factors that determine the ultimate disposal capacity of the landfill. These factors include the area over which the landfill will be developed, such as the depth of excavation, the height of the landfill elevation and the angle of the side-slope construction. The disposal capacity of the landfill is calculated in cubic yards. This measurement of volume is then converted to a disposal capacity expressed in tons based on a site-specific expected density to be achieved over the remaining operating life of the landfill.

These estimates are subject to uncertainty attributable to:

•Estimates of future disposal capacity may change as a result of changes in legislative or regulatory design requirements.

•The density of waste may vary due to variations in operating conditions, including waste compaction practices, site design, climate and the nature of the waste.

•Capacity is defined in cubic yards but waste received is measured in tons. The number of tons per cubic yard varies by type of waste and our rate of compaction.

Development costs. The types of costs that are detailed in the technical design specifications generally include excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection systems and monitoring probes, installation of groundwater monitoring wells, construction of leachate management facilities and other costs associated with the development of the site. We review the adequacy of our cost estimates on an annual basis by comparing estimated costs with third-party bids or contractual arrangements, reviewing the changes in year-over-year cost estimates for reasonableness, and comparing our resulting development cost per acre with prior period costs. These development costs, together with any costs incurred to acquire, design and permit the landfill, including capitalized interest, are recorded to the landfill asset on the balance sheet as incurred.

These estimates are subject to uncertainty attributable to:

•Actual future costs of construction materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor. Technical designs could be altered due to unexpected operating conditions, regulatory changes or legislative changes.

Landfill development asset amortization. To match the expense related to the landfill asset with the revenue generated by the landfill operations, we amortize the landfill development asset over its operating life on a per-ton basis as waste is accepted at the landfill. The landfill asset is fully amortized at the end of a landfill’s operating life. The per-ton rate is calculated by dividing the sum of the landfill development asset net book value plus estimated future development costs (as described above) for the landfill, by the landfill’s estimated remaining disposal capacity. The expected future development costs are not inflated or discounted, but rather expressed in nominal dollars. This rate is applied to each ton accepted at the landfill to arrive at amortization expense for the period.

Amortization rates may be sensitive to the original cost basis of the landfill, including acquisition costs, which in turn is determined by geographic location and market values. We secure significant landfill assets through business acquisitions and

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value them at the time of acquisition based on fair value. Amortization rates are also influenced by site-specific engineering and cost factors.

These estimates are subject to uncertainty attributable to:

•Changes in our future development cost estimates or our disposal capacity will normally result in a change in our amortization rates and will impact amortization expense prospectively. An unexpected significant increase in estimated costs or reduction in disposal capacity could affect the ongoing economic viability of the landfill and result in asset impairment.

On at least an annual basis, we update the estimates of future development costs and remaining disposal capacity for each landfill. These costs and disposal capacity estimates are reviewed and approved by senior operations management annually. Changes in cost estimates and disposal capacity are reflected prospectively in the landfill amortization rates that are updated annually. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Landfill Asset Retirement Obligations

We have two types of retirement obligations related to landfills: (1) capping and (2) closure and post-closure. As of December 31, 2023 and 2022, our asset retirement obligations related to capping, closure and post-closure were $1,937.2 million and $1,786.4 million, respectively. Changes in these estimates may be sensitive to changes in available airspace, cost estimates, inflation, our credit-adjusted, risk-free interest rate and applicable regulations.

Obligations associated with final capping activities that occur during the operating life of the landfill are recognized on a units-of-consumption basis as airspace is consumed within each discrete capping event. Obligations related to closure and post-closure activities that occur after the landfill has ceased operations are recognized on a units-of-consumption basis as airspace is consumed throughout the entire life of the landfill. Landfill retirement obligations are capitalized as the related liabilities are recognized and amortized using the units-of-consumption method over the airspace consumed within the capping event or the airspace consumed within the entire landfill, depending on the nature of the obligation. All obligations are initially measured at estimated fair value. Fair value is calculated on a present value basis using an inflation rate and our credit-adjusted, risk-free rate in effect at the time the liabilities were incurred. Future costs for final capping, closure and post-closure are developed at least annually by engineers, and are inflated to future value using estimated future payment dates and inflation rate projections.

Landfill capping. As individual areas within each landfill reach capacity, we must cap and close the areas in accordance with the landfill site permit. These requirements are detailed in each landfill's technical design, which is reviewed and approved by the regulatory agency issuing the landfill site permit.

Closure and post-closure. Closure costs are costs incurred after a landfill stops receiving waste, but prior to being certified as closed. After the entire landfill has reached capacity and is certified closed, we must continue to maintain and monitor the site for a post-closure period, which generally extends for 30 years. Costs associated with closure and post-closure requirements generally include maintenance of the site, the monitoring of methane gas collection systems and groundwater systems and other activities that occur after the site has ceased accepting waste. Costs associated with post-closure monitoring generally include groundwater sampling, analysis and statistical reports, third-party labor associated with gas system operations and maintenance, transportation and disposal of leachate and erosion control costs related to the final cap.

Landfill retirement obligation liabilities and assets. Estimates of the total future costs required to cap, close and monitor each landfill as specified by the landfill permit are updated annually. The estimates include inflation, the specific timing of future cash outflows and the anticipated waste flow into the capping events. Our cost estimates are inflated to the period of performance using an estimate of inflation, which is updated annually and is based upon the ten year average consumer price index (2.0% in 2023 and 1.9% in 2022).

The present value of the remaining capping costs for specific capping events and the remaining closure and post-closure costs for each landfill are recorded as incurred on a per-ton basis. These liabilities are incurred as disposal capacity is consumed at the landfill.

Capping, closure and post-closure liabilities are recorded in layers and discounted using our credit-adjusted risk-free rate in effect at the time the obligation is incurred (5.3% in 2023 and 4.2% in 2022 ).

Retirement obligations are increased each year to reflect the passage of time by accreting the balance at the weighted average credit-adjusted risk-free rate that was used to calculate each layer of the recorded liabilities. This accretion is charged to operating expenses. Actual cash expenditures reduce the asset retirement obligation liabilities as they are made.

Corresponding retirement obligation assets are recorded for the same value as the additions to the capping, closure and post-closure liabilities. The retirement obligation assets are amortized to expense on a per-ton basis as disposal capacity is consumed. The per-ton rate is calculated by dividing the sum of each of the recorded retirement obligation asset’s net book

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value and expected future additions to the retirement obligation asset by the remaining disposal capacity. A per-ton rate is determined for each separate capping event based on the disposal capacity relating to that event. Closure and post-closure per-ton rates are based on the total disposal capacity of the landfill.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements, including changes in capping, closure activities or post-closure monitoring activities, types and quantities of materials used, or term of post-closure care, could cause changes in our cost estimates.

•Changes in the landfill retirement obligation due to changes in the anticipated waste flow, changes in airspace compaction estimates or changes in the timing of expenditures for closed landfills and fully incurred but unpaid capping events are recorded in results of operations prospectively. This could result in unanticipated increases or decreases in expense.

•Actual timing of disposal capacity utilization could differ from projected timing, causing differences in timing of when amortization and accretion expense is recognized for capping, closure and post-closure liabilities.

•Changes in inflation rates could impact our actual future costs and our total liabilities.

•Changes in our capital structure or market conditions could result in changes to the credit-adjusted risk-free rate used to discount the liabilities, which could cause changes in future recorded liabilities, assets and expense.

•Amortization rates could change in the future based on the evaluation of new facts and circumstances relating to landfill capping design, post-closure monitoring requirements, or the inflation or discount rate.

On an annual basis, we update our estimates of future capping, closure and post-closure costs and of future disposal capacity for each landfill. Revisions in estimates of our costs or timing of expenditures are recognized immediately as increases or decreases to the capping, closure and post-closure liabilities and the corresponding retirement obligation assets. Changes in the assets result in changes to the amortization rates which are applied prospectively, except for fully incurred capping events and closed landfills, where the changes are recorded immediately in results of operations since the associated disposal capacity has already been consumed. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Permitted and probable disposal capacity. Disposal capacity is determined by the specifications detailed in the landfill permit. We classify this disposal capacity as permitted. We also include probable expansion disposal capacity in our remaining disposal capacity estimates, thus including additional disposal capacity being sought through means of a permit expansion. Probable expansion disposal capacity has not yet received final approval from the applicable regulatory agencies, but we have determined that certain critical criteria have been met and that the successful completion of the expansion is probable. We have developed six criteria that must be met before an expansion area is designated as probable expansion airspace. We believe that satisfying all of these criteria demonstrates a high likelihood that expansion airspace that is incorporated in our landfill costing will be permitted. However, because some of these criteria are judgmental, they may exclude expansion airspace that will eventually be permitted or include expansion airspace that will not be permitted. In either of these scenarios, our amortization, depletion and accretion expense could change significantly. Our internal criteria to classify disposal capacity as probable expansion airspace are as follows:

•We own the land associated with the expansion airspace or control it pursuant to an option agreement;

•We are committed to supporting the expansion project financially and with appropriate resources;

•There are no identified fatal flaws or impediments associated with the project, including political impediments;

•Progress is being made on the project;

•The expansion is attainable within a reasonable time frame; and

•We believe it is likely we will receive the expansion permit.

After successfully meeting these criteria, the disposal capacity that will result from the planned expansion is included in our remaining disposal capacity estimates. Additionally, for purposes of calculating landfill amortization and capping, closure and post-closure rates, we include the incremental costs to develop, construct, close and monitor the related probable expansion disposal capacity.

These estimates are subject to uncertainty attributable to:

•We may be unsuccessful in obtaining permits for probable expansion disposal capacity because of the failure to obtain the final local, state, provincial, or federal permits or due to other unknown reasons. If we are unsuccessful in

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obtaining permits for probable expansion disposal capacity, or the disposal capacity for which we obtain approvals is less than what was estimated, both our estimated total costs and disposal capacity will be reduced, which generally increases the rates we charge for landfill amortization and capping, closure and post-closure accruals. An unexpected decrease in disposal capacity could also cause an asset impairment.

Environmental Liabilities

We are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Under current laws and regulations, we may be responsible for environmental remediation at sites that we either own or operate, including sites that we have acquired, or sites where we have (or a company that we have acquired has) delivered waste. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. To estimate our ultimate liability at these sites, we evaluate several factors, including the nature and extent of contamination at each identified site, the required remediation methods, timing of expenditures, the apportionment of responsibility among the potentially responsible parties and the financial viability of those parties. We accrue for costs associated with environmental remediation obligations when such costs are probable and reasonably estimable in accordance with accounting for loss contingencies. We periodically review the status of all environmental matters and update our estimates of the likelihood of and future expenditures for remediation as necessary. Changes in the liabilities resulting from these reviews are recognized currently in earnings in the period in which the adjustment is known. Adjustments to estimates are reasonably possible in the near term and may result in changes to recorded amounts. With the exception of those obligations assumed in certain business combinations, environmental obligations are recorded on an undiscounted basis. Environmental obligations assumed in certain business combinations are initially estimated on a discounted basis, and accreted to full value over time through charges to interest expense. Adjustments arising from changes in amounts and timing of estimated costs and settlements may result in increases or decreases in these obligations and are calculated on a discounted basis as they were initially estimated on a discounted basis. These adjustments are charged to operating income when they are known. We perform a comprehensive review of our environmental obligations annually and also review changes in facts and circumstances associated with these obligations at least quarterly. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on our remediation adjustments. We have not reduced the liabilities we have recorded for recoveries from other potentially responsible parties or insurance companies. As of December 31, 2023 and 2022, we had $485.4 million and $487.5 million of environmental liabilities, respectively. Changes in these estimates may be sensitive to changes in cost estimates, timing of estimated costs and settlements, inflation, our credit-adjusted, risk-free interest rate and applicable regulations.

These estimates are subject to uncertainty attributable to:

•We cannot determine with precision the ultimate amounts of our environmental remediation liabilities. Our estimates of these liabilities require assumptions about uncertain future events. Thus, our estimates could change substantially as additional information becomes available regarding the nature or extent of contamination, the required remediation methods, timing of expenditures, the final apportionment of responsibility among the potentially responsible parties identified, the financial viability of those parties and the actions of governmental agencies or private parties with interests in the matter. The actual environmental costs may exceed our current and future accruals for these costs, and any adjustments could be material.

•Actual amounts could differ from the estimated liabilities as a result of changes in estimated future litigation costs to pursue the matter to ultimate resolution.

•An unanticipated environmental liability that arises could result in a material charge to our consolidated statements of income.

Insurance Reserves and Related Costs

Our insurance policies for workers' compensation, commercial general liability, commercial auto liability and environmental liability are high deductible, or retention programs. The deductibles, or retentions, range from $3 million to $10 million. The employee-related health benefits are also subject to a high-deductible insurance policy. Accruals for deductibles or retentions are based on claims filed and actuarial estimates of claims development and claims incurred but not reported. As of December 31, 2023 and 2022, our insurance reserves were $565.4 million and $502.6 million, respectively. Changes in these estimates may be sensitive to changes in the frequency, severity and settlement amount of claims.

These estimates are subject to uncertainty attributable to:

•Incident rates, including frequency and severity and other actuarial assumptions could change causing our current and future actuarially determined obligations to change, which would be reflected in our consolidated statements of income in the period in which such adjustment is known.

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•Recorded reserves may not be adequate to cover the future payment of claims. Adjustments, if any, to estimates recorded resulting from ultimate claim payments would be reflected in the consolidated statements of income in the periods in which such adjustments are known.

•The settlement costs to discharge our obligations, including legal and health care costs, could increase or decrease causing current estimates of our insurance reserves to change.

New Accounting Standards

For a description of new accounting standards that may affect us, see Note 2, Summary of Significant Accounting Policies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

FY 2022 10-K MD&A

SEC filing source: 0001060391-23-000008.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2023-02-23. Report date: 2022-12-31.

ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our audited consolidated financial statements and the notes thereto included in Part II, Item 8 of this Annual Report on Form 10-K. This discussion may contain forward-looking statements that anticipate results that are subject to uncertainty. We discuss in more detail various factors that could cause actual results to differ from expectations in Part I, Item 1A, Risk Factors in this Annual Report on Form 10-K.

For further discussion regarding our results of operations for the year ended December 31, 2021 as compared to the year ended December 31, 2020, refer to Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2021.

Recent Developments

Acquisition of US Ecology

On May 2, 2022, we acquired all outstanding equity of US Ecology in a transaction valued at $2.2 billion. US Ecology is a leading provider of environmental solutions offering treatment, recycling and disposal of hazardous, non-hazardous and specialty waste. This acquisition expands our existing environmental solutions footprint and expands our platform to provide customers in North America with environmental solutions from collection to disposal, including recycling, solid waste, special waste, hazardous waste, container rental and field services. We financed the transaction using the proceeds of a new $1.0 billion unsecured Term Loan Credit Agreement (Term Loan Facility) and borrowings under our existing $3.0 billion unsecured revolving credit facility. For the year ended December 31, 2022, the financial results of US Ecology are included within our Group 3 reportable segment.

Impact of the COVID-19 Pandemic

In March 2020, the World Health Organization declared the outbreak of a new strain of coronavirus (COVID-19) a pandemic. In 2020, certain customers in our small- and large-container businesses began adjusting their service levels, which included a decrease in the frequency of pickups or a temporary pause in service. In addition, we experienced a decline in volumes disposed at certain of our landfills and transfer stations. As service levels decreased, we also experienced a decrease in certain costs of our operations which are variable in nature. This decline in service activity peaked in 2020 and has improved sequentially thereafter, returning to pre-pandemic levels in 2022.

The effects of the COVID-19 pandemic on our business are described in more detail in the Results of Operations discussion in this Management's Discussion and Analysis of Financial Condition and Results of Operations.

2023 Financial Guidance

In 2023, we will focus on pricing in excess of cost inflation, driving profitable volume growth, investing in sustainability to improve the environment and drive growth, investing in value-creating acquisitions and advancing technology to improve productivity and increase customer retention. Specific guidance follows:

Revenue

We expect revenue to be in the range of $14.650 billion to $14.800 billion. We expect an increase in average yield of approximately 5.5% and volume growth to be in a range of 0.5% to 1.0%. Average yield on related business revenue is expected to be 6.5%.

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Adjusted Diluted Earnings per Share

The following is a summary of anticipated adjusted diluted earnings per share for the year ending December 31, 2023 compared to the actual adjusted diluted earnings per share for the year ended December 31, 2022. Adjusted diluted earnings per share is not a measure determined in accordance with U.S. GAAP:

(Anticipated) Year Ending December 31, 2023(Actual) Year Ended December 31, 2022
Diluted earnings per share$ 5.02 to 5.10$4.69
Gain on business divestitures and impairments, net(0.01)
Restructuring charges0.050.06
US Ecology, Inc. acquisition integration and deal costs0.080.19
Adjusted diluted earnings per share$ 5.15 to 5.23$4.93

We believe that the presentation of adjusted diluted earnings per share provides an understanding of operational activities before the financial effect of certain items. We use this measure, and believe investors will find it helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate effect on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definition of adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies.

The guidance set forth above constitutes forward-looking information and is not a guarantee of future performance. The

guidance is based upon the current beliefs and expectations of our management and is subject to significant risk and

uncertainties that could cause actual results to differ materially from those shown above. See Item 1A. Risk Factors - Disclosure Regarding Forward-Looking Statements.

Overview

Republic is one of the largest providers of environmental services in the United States, as measured by revenue. As of December 31, 2022, we operated across the United States and Canada through 353 collection operations, 233 transfer stations, 71 recycling centers, 206 active landfills, 3 treatment, recovery and disposal facilities, 20 treatment, storage and disposal facilities (TSDF), 6 salt water disposal wells and 7 deep injection wells. We are engaged in 73 landfill gas-to-energy and other renewable energy projects and had post-closure responsibility for 128 closed landfills.

Revenue for the year ended December 31, 2022 increased by 19.6% to $13,511.3 million compared to $11,295.0 million in 2021. This change in revenue is due to increased volume of 2.4%, average yield of 5.2%, acquisitions, net of divestitures of 9.6%, fuel recovery fees of 2.6% and environmental solutions revenue of 0.5%, partially offset by decreased recycling processing and commodity sales of 0.6%. Additionally, revenue decreased 0.1% due to one less workday in 2022 as compared to 2021.

The following table summarizes our revenue, costs and expenses for the years ended December 31, 2022 and 2021 (in millions of dollars and as a percentage of revenue):

20222021
Revenue$13,511.3100.0%$11,295.0100.0%
Expenses:
Cost of operations8,205.060.76,737.759.7
Depreciation, amortization and depletion of property and equipment1,245.69.21,111.79.8
Amortization of other intangible assets53.90.433.30.3
Amortization of other assets52.10.440.50.4
Accretion89.60.782.70.7
Selling, general and administrative1,454.310.81,195.810.6
Adjustment to withdrawal liability for multiemployer pension funds(1.6)
(Gain) loss on business divestitures and impairments, net(6.3)0.5
Restructuring charges27.00.216.60.1
Operating income$2,391.717.6%$2,076.218.4%

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Our pre-tax income was $1,831.5 million for the year ended December 31, 2022, compared to $1,575.1 million in 2021. Our net income attributable to Republic Services, Inc. was $1,487.6 million, or $4.69 per diluted share for 2022, compared to $1,290.4 million, or $4.04 per diluted share, for 2021.

During 2022 and 2021, we recorded a number of charges, other expenses and benefits that impacted our pre-tax income, tax impact, net income attributable to Republic Services, Inc. (net income – Republic) and diluted earnings per share as noted in the following table (in millions, except per share data). Additionally, see our Results of Operations section of this Management's Discussion and Analysis of Financial Condition and Results of Operations for a discussion of other items that impacted our earnings during the years ended December 31, 2022 and 2021. For comparative purposes, prior year amounts have been reclassified to conform to current year presentation.

Year Ended December 31, 2022Year Ended December 31, 2021
Pre-tax IncomeTax Impact(2)Net Income - RepublicDiluted Earnings per SharePre-tax IncomeTax Impact(2)Net Income - RepublicDiluted Earnings per Share
As reported$1,831.5$343.9$1,487.6$4.69$1,575.1$282.8$1,290.4$4.04
Restructuring charges27.07.119.90.0616.64.412.20.04
(Gain) loss on business divestitures and impairments, net(6.3)(2.5)(3.8)(0.01)0.5(5.5)6.00.02
Adjustment to withdrawal liability for multiemployer pension funds(1)(1.6)(0.4)(1.2)
Accelerated vesting of compensation expense for CEO transition22.022.00.07
US Ecology, Inc. acquisition integration and deal costs77.317.060.30.19
Total adjustments96.421.275.20.2439.1(1.1)40.20.13
As adjusted$1,927.9$365.1$1,562.8$4.93$1,614.2$281.7$1,330.6$4.17

(1) The aggregate impact to adjusted diluted earnings per share totals to less than $0.01 for the year ended December 31, 2022.

(2) The income tax effect related to our adjustments includes both current and deferred income tax impact and is individually calculated based on the statutory rates applicable to each adjustment.

We believe that presenting adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share, which are not measures determined in accordance with U.S. GAAP, provide an understanding of operational activities before the financial impact of certain items. We use these measures, and believe investors will find them helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate impact on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definitions of adjusted pre-tax income, adjusted tax impact, adjusted net income – Republic, and adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies. Further information on each of these adjustments is included below.

Restructuring charges. In 2022 and 2021, we incurred restructuring charges of $27.0 million and $16.6 million, respectively, primarily related to the redesign of our general ledger, budgeting and procurement enterprise resource planning systems. These systems were placed into production in 2022, and we do not expect to incur future costs related to the implementation of these systems. We paid $19.8 million and $17.2 million during 2022 and 2021, respectively, related to these restructuring efforts.

In 2023, we expect to incur restructuring charges of approximately $20 million, primarily related to the redesign of our customer billing and asset management software systems. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

(Gain) loss on business divestitures and impairments, net. During 2022, we recorded a net gain on business divestitures and impairments of $6.3 million. During 2021, we recorded a loss of $0.5 million related to business divestitures and asset impairments. Additionally, we recognized an increase in our deferred tax provision of $5.5 million due to a change in our United States operational footprint as a result of certain acquisitions that closed during the period.

Adjustment to withdrawal liability for multiemployer pension funds. During 2022, we recorded a net reduction of $1.6 million related to the remeasurement of withdrawal costs liabilities from multiemployer pension plans. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

Accelerated vesting of compensation expense for CEO transition. In June 2021, Donald W. Slager retired as Chief Executive Officer (CEO) of Republic Services, Inc. During 2021, we recognized a charge of $22.0 million primarily related to the accelerated vesting of his compensation awards that were previously scheduled to vest in 2022 and beyond.

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US Ecology, Inc. acquisition integration and deal costs. During the year ended December 31, 2022, we incurred $77.3 million of acquisition integration and deal costs in connection with the acquisition of US Ecology, which included certain costs to close the acquisition and integrate the business, including stock compensation expense for unvested awards at closing as well as severance and change-in-control payments. The acquisition closed on May 2, 2022.

In 2023, we expect to incur costs of approximately $35 million to integrate the US Ecology business, primarily related to the integration of certain software systems as well as rebranding the business. We expect to be substantially complete with our integration activities by the end of 2023.

Results of Operations

Revenue

We generate revenue by providing environmental services to our customers, including the collection and processing of recyclable materials, the collection, treatment, consolidation, transfer and disposal of hazardous and non-hazardous waste and other environmental solutions. Our residential, small-container and large-container collection operations in some markets are based on long-term contracts with municipalities. Certain of our municipal contracts have annual price escalation clauses that are tied to changes in an underlying base index such as a consumer price index. We generally provide small-container and large-container collection services to customers under contracts with terms up to three years. Our transfer stations and landfills generate revenue from disposal or tipping fees charged to third parties. Our recycling centers generate revenue from tipping fees charged to third parties and the sale of recycled commodities. Our revenue from environmental solutions primarily consists of (1) fees we charge for the collection, treatment, transfer and disposal of hazardous and non-hazardous waste, (2) field and industrial services, (3) equipment rental, (4) emergency response and standby services, (5) in-plant services, such as transportation and logistics, including at our TSDFs and (6) in-plant services such as high-pressure cleaning, tank cleaning, decontamination, remediation, transportation, spill cleanup and emergency response at refineries, chemical, steel and automotive plants and other governmental, commercial and industrial facilities. Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

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The following table reflects our revenue by service line for the years ended December 31, 2022 and 2021 (in millions of dollars and as a percentage of revenue):

20222021
Collection:
Residential$2,642.619.5%$2,452.821.7%
Small-container3,945.729.23,417.730.3
Large-container2,701.120.02,355.620.8
Other53.90.452.10.5
Total collection9,343.369.18,278.273.3
Transfer1,574.51,490.0
Less: intercompany(849.8)(814.4)
Transfer, net724.75.4675.66.0
Landfill2,681.72,516.6
Less: intercompany(1,131.9)(1,092.8)
Landfill, net1,549.811.51,423.812.6
Environmental solutions1,262.1242.4
Less: intercompany(53.9)(19.5)
Environmental solutions, net1,208.28.9222.92.0
Other:
Recycling processing and commodity sales359.32.7420.53.7
Other non-core326.02.4274.02.4
Total other685.35.1694.56.1
Total revenue$13,511.3100.0%$11,295.0100.0%

The following table reflects changes in components of our revenue, as a percentage of total revenue, for the years ended December 31, 2022 and 2021:

20222021
Average yield5.2%2.9%
Fuel recovery fees2.60.8
Total price7.83.7
Volume2.43.8
Change in workdays(0.1)(0.1)
Recycling processing and commodity sales(0.6)1.1
Environmental solutions0.5(0.1)
Total internal growth10.08.4
Acquisitions / divestitures, net9.62.8
Total19.6%11.2%
Core price6.7%5.0%

Average yield is defined as revenue growth from the change in average price per unit of service, expressed as a percentage. Core price is defined as price increases to our customers and fees, excluding fuel recovery, net of price decreases to retain customers. We also measure changes in average yield and core price as a percentage of related-business revenue, defined as total revenue excluding recycled commodities, fuel recovery fees and environmental solutions revenue to determine the effectiveness of our pricing strategies.

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The following table reflects average yield and core price as a percentage of related-business revenue for the years ended December 31, 2022 and 2021:

Years Ended December 31,
20222021
As a % of Related Business
Average yield5.7%3.1%
Core price7.3%5.3%

During 2022, we experienced the following changes in our revenue as compared to 2021:

•Average yield increased revenue by 5.2% due to positive pricing changes in all our collection and disposal lines of business.

•The fuel recovery fee program, which mitigates our exposure to increases in fuel prices, increased revenue by 2.6%, primarily due to an increase in fuel prices compared to 2021 and an increase in the total revenue subject to the fuel recovery fees.

•Volume increased revenue by 2.4% during 2022 as compared to 2021 primarily due to volume growth in our landfill and all our collection lines of business, partially offset by a decrease in volume in our transfer line of business. The volume increase in our landfill line of business is primarily attributable to increased special waste, construction and demolition, and solid waste volumes.

•Recycling processing and commodity sales decreased revenue by 0.6% primarily due to a decrease in overall commodity prices as compared to 2021. The average price for recycled commodities, excluding glass and organics for 2022 was $170 per ton compared to $187 per ton for 2021.

Changing market demand for recycled commodities causes volatility in commodity prices. At current volumes and mix of materials, we believe a $10 per ton change in the price of recycled commodities will change both annual revenue and operating income by approximately $10 million.

•During 2022, environmental solutions revenue increased by 0.5% primarily due to an increase in volumes, including those driven by an increase in rig counts and drilling activity. This revenue increase excludes the impact from our acquisition of US Ecology.

•Acquisitions, net of divestitures, increased revenue by 9.6%, reflecting the results of our continued growth strategy of acquiring solid waste, recycling and environmental services companies, including US Ecology, that complement and expand our existing business platform.

Cost of Operations

Cost of operations includes labor and related benefits, which consists of salaries and wages, health and welfare benefits, incentive compensation and payroll taxes. It also includes transfer and disposal costs representing tipping fees paid to third party disposal facilities and transfer stations; maintenance and repairs relating to our vehicles, equipment and containers, including related labor and benefit costs; transportation and subcontractor costs, which include costs for independent haulers that transport our waste to disposal facilities and costs for local operators that provide waste handling services associated with our National Accounts in markets outside our standard operating areas; fuel, which includes the direct cost of fuel used by our vehicles, net of fuel tax credits; disposal fees and taxes, consisting of landfill taxes, host community fees and royalties; landfill operating costs, which includes financial assurance, leachate disposal, remediation charges and other landfill maintenance costs; risk management costs, which include insurance premiums and claims; cost of goods sold, which includes material costs paid to suppliers; and other, which includes expenses such as facility operating costs, equipment rent and gains or losses on sale of assets used in our operations.

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The following table summarizes the major components of our cost of operations for the years ended December 31, 2022 and 2021 (in millions of dollars and as a percentage of revenue):

20222021
Labor and related benefits$2,702.920.0%$2,324.420.6%
Transfer and disposal costs992.97.3865.87.7
Maintenance and repairs1,228.49.11,048.89.3
Transportation and subcontract costs1,086.58.0779.56.9
Fuel631.14.7383.03.4
Disposal fees and taxes342.32.5336.63.0
Landfill operating costs283.22.1258.92.3
Risk management321.42.4261.62.3
Other616.04.6479.14.2
Subtotal8,204.760.76,737.759.7
US Ecology, Inc. acquisition integration and deal costs0.3
Total cost of operations$8,205.060.7%$6,737.759.7%

These cost categories may change from time to time and may not be comparable to similarly titled categories presented by other companies. As such, you should take care when comparing our cost of operations by component to that of other companies and of ours for prior periods.

Our cost of operations increased for the year ended December 31, 2022 compared to the same period in 2021 as a result of the following:

•Labor and related benefits increased in aggregate dollars due to higher hourly and salaried wages as a result of annual merit increases and an increase in service levels attributable to economic recovery from the COVID-19 pandemic. Acquisition-related growth, including the acquisition of US Ecology, also contributed to the increase in labor and related benefits in aggregate dollars.

•Transfer and disposal costs increased in aggregate dollars primarily due to acquisition-related growth, including the acquisition of US Ecology. Transfer and disposal costs also increased in aggregate dollars as a result of higher collection volumes and an increase in third party disposal rates.

During both 2022 and 2021, approximately 68% of the total solid waste volume we collected was disposed at landfill     sites that we own or operate (internalization).

•Maintenance and repairs expense increased in aggregate dollars due to an increase in the price of replacement parts as well as an increase in service levels attributable to the economic recovery from the COVID-19 pandemic.

•Transportation and subcontract costs increased in 2022 due to an increase in third-party transportation fees, partially driven by the higher cost of fuel passed on through higher transportation surcharges, and an increase in subcontract work attributable to a corresponding increase in non-core revenues as compared to 2021. Acquisition-related growth, including the acquisition of US Ecology, also contributed to the increase in transportation and subcontract costs.

•Our fuel costs increased due to an increase in the average diesel fuel cost per gallon. The national average diesel fuel cost per gallon for 2022 was $4.99 compared to $3.29 for 2021.

At current consumption levels, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel costs by approximately $27 million per year. Offsetting these changes in fuel expense would be changes in our fuel recovery fee charged to our customers. At current participation rates, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel recovery fee by approximately $31 million per year.

•Disposal    fees and taxes increased in aggregate dollars in 2022 primarily due to increased royalties and host fees from an increase in volume at certain landfills as compared to 2021.

•Landfill operating costs increased in aggregate dollars during 2022 primarily due to increased leachate treatment, transportation and disposal costs due in part to increased rainfall in select geographic regions, as well as landfill gas and other maintenance costs.

•Risk management expenses increased primarily due to unfavorable actuarial development in our auto liability claims as well as higher premium costs.

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•During 2022, we incurred $0.3 million of acquisition integration and deal costs within cost of operations in connection with the acquisition of US Ecology.

•Other costs of operations increased during 2022 due to increased occupancy and facility related expenses, acquisition-related activity and higher third-party truck and equipment rental expense to support higher volumes.

Depreciation, Amortization and Depletion of Property and Equipment

The following table summarizes depreciation, amortization and depletion of property and equipment for the years ended December 31, 2022 and 2021 (in millions of dollars and as a percentage of revenue):

20222021
Depreciation and amortization of property and equipment$811.96.0%$734.96.5%
Landfill depletion and amortization433.73.2376.83.3
Depreciation, amortization and depletion expense$1,245.69.2%$1,111.79.8%

Depreciation and amortization of property and equipment increased primarily due to assets added through acquisitions.

Landfill depletion and amortization expense increased due to higher landfill disposal volumes primarily driven by special waste, solid waste and construction and demolition volumes coupled with an increase in our overall average depletion rate.

Amortization of Other Intangible Assets

Expenses for amortization of other intangible assets were $53.9 million, or 0.4% of revenue, for the year ended December 31, 2022, compared to $33.3 million, or 0.3% of revenue, for 2021. Amortization expense increased due to additional assets acquired as a result of our business acquisitions.

Amortization of Other Assets

Our other assets primarily relate to the prepayment of fees and capitalized implementation costs associated with cloud-based hosting arrangements. Expenses for amortization of other assets were $52.1 million, or 0.4%, for the year ended December 31, 2022, compared to $40.5 million, or 0.4% revenue, for 2021.

Accretion Expense

Accretion expense was $89.6 million, or 0.7% of revenue, and $82.7 million, or 0.7% of revenue, for the years ended December 31, 2022 and 2021, respectively. Accretion expense increased in aggregate dollars due to acquired asset retirement obligations.

Selling, General and Administrative Expenses

Selling, general and administrative expenses include salaries, health and welfare benefits and incentive compensation for corporate and field general management, field support functions, sales force, accounting and finance, legal, management information systems and clerical and administrative departments. Other expenses include rent and office costs, fees for professional services provided by third parties, legal settlements, marketing, investor and community relations services, directors’ and officers’ insurance, general employee relocation, travel, entertainment and bank charges. Restructuring charges are excluded from selling, general and administrative expenses and are discussed separately.

The following table summarizes our selling, general and administrative expenses for the years ended December 31, 2022 and 2021 (in millions of dollars and as a percentage of revenue):

20222021
Salaries and related benefits$937.97.0%$844.47.5%
Provision for doubtful accounts41.50.319.90.2
Other397.92.9309.52.7
Subtotal1,377.310.21,173.810.4
Accelerated vesting of compensation expense for CEO transition22.00.2
US Ecology, Inc. acquisition integration and deal costs77.00.6
Total selling, general and administrative expenses$1,454.310.8%$1,195.810.6%

These cost categories may change from time to time and may not be comparable to similarly titled categories used by other companies. As such, you should take care when comparing our selling, general and administrative expenses by cost component to those of other companies and of ours for prior periods.

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The most significant items affecting our selling, general and administrative expenses during 2022 as compared to 2021 are summarized below:

•Salaries and related benefits increased in aggregate dollars primarily due to higher wages, benefits and other payroll related items resulting from annual merit increases, offset, in part, by lower management incentive expenses. Acquisition-related growth, including the acquisition of US Ecology, also contributed to the growth in salaries and related benefits in aggregate dollars.

•Provision for doubtful accounts increased primarily due to an increase in days sales outstanding and acquisition-related activity. As of December 31, 2022, our days sales outstanding were 43.3, or 31.8 days net of deferred revenue, compared to 39.2, or 27.5 days net of deferred revenue, as of December 31, 2021. Excluding our acquisition of US Ecology, our days sales outstanding were 39.1, or 27.3 days net of deferred revenue, as of December 31, 2022.

•Other selling, general and administrative expenses increased for the year ended December 31, 2022, largely due to an increase in advertising and travel costs and acquisition-related growth, including US Ecology.

•In June 2021, Donald W. Slager retired as CEO of Republic Services, Inc. During the year ended December 31, 2021, we recognized a charge of $22.0 million, related to the accelerated vesting of his compensation awards that were previously scheduled to vest in 2022 and beyond.

•During the year ended December 31, 2022, we incurred $77.0 million of acquisition integration and deal costs within selling, general and administration expense in connection with the acquisition of US Ecology, which included certain costs to close the acquisition and integrate the business, including stock compensation expense for unvested awards at closing as well as severance and change-in-control payments. The acquisition closed on May 2, 2022.

Adjustment to Withdrawal Liability for Multiemployer Pension Funds

During the year ended December 31, 2022, we recorded a net reduction of $1.6 million related to the remeasurement of withdrawal costs liabilities from multiemployer pension plans. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

(Gain) loss on Business Divestitures and Impairments, Net

We strive to have a leading market position in each of the markets we serve, or have a clear path on how we will achieve a leading market position over time. Where we cannot establish a leading market position, or where operations are not generating acceptable returns, we may decide to divest certain assets and reallocate resources to other markets. Business divestitures could result in gains, losses or impairment charges that may be material to our results of operations in a given period.

During the years ended December 31, 2022 and 2021, we recorded a net gain (loss) on business divestitures and impairments of $6.3 million and $0.5 million, respectively.

Restructuring Charges

In 2022 and 2021, we incurred restructuring charges of $27.0 million and $16.6 million, respectively, primarily related to the redesign of our general ledger, budgeting and procurement enterprise resource planning systems. These systems were placed into production in 2022, and we do not expect to incur future costs related to the implementation of these systems. We paid $19.8 million and $17.2 million during 2022 and 2021, respectively, related to these restructuring efforts.

In 2023, we expect to incur additional restructuring charges of approximately $20 million primarily related to the implementation of replacement billing and collection software systems. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

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Interest Expense

The following table provides the components of interest expense, including accretion of debt discounts and accretion of discounts primarily associated with environmental and risk insurance liabilities assumed in acquisitions for the years ended December 31, 2022 and 2021 (in millions of dollars):

20222021
Interest expense on debt$329.0$249.1
Non-cash interest71.670.5
Less: capitalized interest(5.0)(5.0)
Total interest expense$395.6$314.6

Total interest expense for 2022 increased compared to 2021 primarily due to additional outstanding debt to fund the purchase of US Ecology and higher interest rates on our floating rate debt.

Cash paid for interest, excluding net swap settlements for our fixed-to-floating and floating-to-fixed interest rate swaps, was $311.5 million and $249.4 million for the years ended December 31, 2022 and 2021, respectively.

As of December 31, 2022, we had $3,349.1 million of floating rate debt including floating rate swap contracts. If interest rates increased or decreased by 100 basis points on our variable rate debt, annualized interest expense and net cash payments for interest would increase or decrease by approximately $33 million.

Income Taxes

Our provision for income taxes was $343.9 million and $282.8 million for 2022 and 2021, respectively. Our effective tax rate, exclusive of non-controlling interests, for the years ended December 31, 2022 and 2021 was 18.8% and 18.0%, respectively. Net cash paid for income taxes was approximately $185 million and $300 million for the years ended December 31, 2022 and 2021, respectively.

During 2022, we acquired non-controlling interests in limited liability companies established to own solar energy assets that qualified for investment tax credits under Section 48 of the Internal Revenue Code. We account for these investments using the equity method of accounting and recognize our share of income or loss and other reductions in the value of our investment in loss from unconsolidated equity method investments within our consolidated statements of income. For further discussion regarding our equity method accounting, see Note 3, Business Acquisitions, Investments and Restructuring Charges. Our 2022 tax provision reflects a benefit of approximately $139 million due to the tax credits related to these investments.

Our 2021 tax provision was reduced by approximately $126 million related to the tax credits from our non-controlling interest in limited liability companies established to own solar energy assets.

On August 16, 2022, the Inflation Reduction Act (IRA) was signed into law. The IRA, among other things, implements a 15% minimum tax on financial statement income of certain large corporations, a 1% excise tax on stock repurchases and extends, enhances and creates several tax incentives to promote clean energy. While we continue to evaluate the IRA, at present, outside of the potential for future energy credits, we do not believe it will have a material effect on our audited consolidated financial statements.

We have deferred tax assets related to state net operating loss carryforwards with an estimated tax effect of approximately $77 million available as of December 31, 2022. These state net operating loss carryforwards expire at various times between 2023 and 2042. We believe that it is more likely than not that the benefit from some of our state net operating loss carryforwards will not be realized due to limitations on these loss carryforwards in certain states. In recognition of this risk, as of December 31, 2022, we have provided a valuation allowance of approximately $42 million.

For additional discussion and detail regarding our income taxes, see Note 11, Income Taxes, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Reportable Segments

Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, referred to as Group 1, Group 2 and Group 3. Group 1 is our recycling and solid waste business operating primarily in geographic areas located in the western United States. Group 2 is our recycling and solid waste business operating primarily in geographic areas located in the southeastern and mid-western United States and the eastern seaboard of the United States. Group 3 is our environmental solutions business operating primarily in geographic areas located across the United States and Canada. These groups are presented below as our reportable segments, which each provide integrated environmental services, including but not limited to collection, transfer, recycling and disposal. Prior to the third quarter of 2022, our environmental solutions operating segment, now referred to as our Group 3 reportable segment, was aggregated with Corporate entities and other.

Corporate entities and other include legal, tax, treasury, information technology, risk management, human resources, closed landfills and other administrative functions. National Accounts revenue included in Corporate entities and other represents the portion of revenue generated from nationwide and regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

Summarized financial information regarding our reportable segments for the years ended December 31, 2022 and 2021 (in millions of dollars and as a percentage of revenue in the case of adjusted EBITDA margin) follows. For totals as well as further detail regarding our reportable segments and the adjustments used to calculate gross Adjusted EBITDA, net Adjusted EBITDA and adjusted EBITDA margin for each segment, see Note 15, Segment Reporting, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Group 1Group 2Group 3Corporate entities and other
Year Ended December 31, 2022
Gross Revenue$7,240.5$6,903.8$1,262.5$238.3
Intercompany Revenue(1,104.5)(930.9)(46.6)(51.8)
Net Revenue$6,136.0$5,972.9$1,215.9$186.5
Gross Adjusted EBITDA$1,979.4$1,685.9$253.7$10.3
Adjusted EBITDA allocations27.525.4(42.6)(10.3)
Net Adjusted EBITDA$2,006.9$1,711.3$211.1$
Adjusted EBITDA margin32.2%28.2%17.4%%
Capital Expenditures$626.2$527.7$141.7$158.4
Total Assets$12,494.3$10,439.4$4,086.3$2,032.9
Year Ended December 31, 2021
Gross Revenue$6,630.0$6,229.1$242.4$220.3
Intercompany Revenue(1,071.1)(905.7)(19.5)(30.5)
Net Revenue$5,558.9$5,323.4$222.9$189.8
Gross Adjusted EBITDA$1,841.1$1,494.8$44.6$3.0
Adjusted EBITDA allocations1.61.4(3.0)
Net Adjusted EBITDA$1,842.7$1,496.2$44.6$
Adjusted EBITDA margin32.6%27.6%20.0%%
Capital Expenditures$601.9$541.8$50.8$121.8
Total Assets$12,199.2$9,926.9$1,211.6$1,617.3

Significant changes in the revenue, Adjusted EBITDA and Adjusted EBITDA margin of our reportable segments for 2022 compared to 2021 are discussed below.

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Group 1

Net revenue for the year ended December 31, 2022 increased 10.4% from 2021 due to an increase in average yield and volume in all lines of business. The increase in landfill volume was attributable to an increase in special waste and construction and demolition volumes, offset in part by a decrease in solid waste volumes. Revenue also increased due to acquisition-related growth.

Adjusted EBITDA in Group 1 increased in aggregate dollars from $1,842.7 million for the year ended December 31, 2021, or a 32.6% adjusted EBITDA margin, to $2,006.9 million, or a 32.2% adjusted EBITDA margin for the year ended December 31, 2022.

Adjusted EBITDA margin for the year ended December 31, 2022 was unfavorably impacted by an increase in vehicle and equipment rental fees, transportation and subcontract costs driven by increases in volume, as well as higher disposal costs due to an increase in third party disposal rates, higher maintenance costs due to inflationary pressures on parts and materials and increased transportation and subcontract costs driven by the increase in volume. The unfavorable impact was partially offset by the increase in revenue attributable to both acquisition activity and the economic recovery from the COVID-19 pandemic.

Group 2

Net revenue for the year ended December 31, 2022 increased 12.2% from 2021 due to an increase in average yield in all lines of business and volume in our landfill and small- and large-container collection lines of business. These increases were partially offset by volume declines in our residential and transfer station lines of business. The increase in landfill volume was attributable to an increase in special waste, solid waste and construction and demolition volumes. Revenue also increased due to acquisition-related growth.

Adjusted EBITDA in Group 2 increased from $1,496.2 million for the year ended December 31, 2021, or a 27.6% adjusted EBITDA margin, to $1,711.3 million, or a 28.2% adjusted EBITDA margin for the year ended December 31, 2022.

Adjusted EBITDA margin for the year ended December 31, 2022 was favorably impacted by the increase in revenue attributable to the economic recovery from the COVID-19 pandemic coupled with the effective management of certain operating costs, primarily labor and related benefits, disposal costs and maintenance and repairs. The favorable impact was partially offset by an increase in vehicle and equipment rental fees and transportation and subcontract costs driven by the increases in volume.

Group 3

Revenue for the year ended December 31, 2022 increased primarily due to the acquisition of US Ecology, as well as an increase in rig counts and drilling activity.

Adjusted EBITDA in Group 3 increased from $44.6 million for the year ended December 31, 2021, or a 20.0% adjusted EBITDA margin, to $211.1 million for the year ended December 31, 2022, or an 17.4% adjusted EBITDA margin.

Adjusted EBITDA margin for the year ended December 31, 2022 decreased due to the acquisition of US Ecology.

Landfill and Environmental Matters

Our landfill costs include daily operating expenses, costs of capital for cell development, costs for final capping, closure and post-closure and the legal and administrative costs of ongoing environmental compliance. Daily operating expenses include leachate treatment, transportation and disposal costs, methane gas and groundwater monitoring and system maintenance costs, interim cap maintenance costs and costs associated with applying daily cover materials. We expense all indirect landfill development costs as they are incurred. We use life cycle accounting and the units-of-consumption method to recognize certain direct landfill costs related to landfill development. In life cycle accounting, certain direct costs are capitalized and charged to depletion expense based on the consumption of cubic yards of available airspace. These costs include all costs to acquire and construct a site, including excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection and monitoring systems, installation of groundwater monitoring wells and other costs associated with acquiring and developing the site. Obligations associated with final capping, closure and post-closure are capitalized and amortized on a units-of-consumption basis as airspace is consumed.

Cost and airspace estimates are developed at least annually by engineers. Our operating and accounting personnel use these estimates to adjust the rates we use to expense capitalized costs. Changes in these estimates primarily relate to changes in cost estimates, available airspace, inflation and applicable regulations. Changes in available airspace include changes in engineering estimates, changes in design and changes due to the addition of airspace lying in expansion areas that we believe have a probable likelihood of being permitted. Changes in engineering estimates typically include modifications to the available disposal capacity of a landfill based on a refinement of the capacity calculations resulting from updated information.

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Available Airspace

As of December 31, 2022, we owned or operated 206 active landfills with total available disposal capacity estimated to be 5.0 billion in-place cubic yards. For these landfills, the following table reflects changes in capacity and remaining capacity, as measured in cubic yards of airspace as of December 31, 2022.

Balance as of December 31, 2021New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2022
Cubic yards (in millions):
Permitted airspace4,826.775.23.3(85.0)(3.4)4,816.8
Probable expansion airspace186.014.6(3.1)197.5
Total cubic yards (in millions)5,012.714.675.20.2(85.0)(3.4)5,014.3
Number of sites:
Permitted airspace19810(2)206
Probable expansion airspace113(1)13

The following table reflects changes in capacity and remaining capacity for these landfills, as measured in cubic yards of airspace, as of December 31, 2021.

Balance as of December 31, 2020New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2021
Cubic yards (in millions):
Permitted airspace4,792.561.437.8(79.3)14.34,826.7
Probable expansion airspace196.420.5(30.9)186.0
Total cubic yards (in millions)4,988.920.561.46.9(79.3)14.35,012.7
Number of sites:
Permitted airspace18613(1)198
Probable expansion airspace112(2)11

Total available disposal capacity represents the sum of estimated permitted airspace plus an estimate of probable expansion airspace. Engineers develop these estimates at least annually using information provided by annual aerial surveys. Before airspace included in an expansion area is determined to be probable expansion airspace and, therefore, included in our calculation of total available disposal capacity, it must meet all of our expansion criteria. See Note 2, Summary of Significant Accounting Policies, and Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Item 8 of this Annual Report on Form 10-K for further information. Also see our Critical Accounting Judgments and Estimates section of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

As of December 31, 2022, 13 of our landfills met all of our criteria for including their probable expansion airspace in their total available disposal capacity. At projected annual volumes, these 13 landfills have an estimated remaining average site life of 32 years, including probable expansion airspace. The average estimated remaining life of all of our landfills is 58 years. We have other expansion opportunities that are not included in our total available airspace because they do not meet all of our criteria for treatment as probable expansion airspace.

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The following table reflects the estimated operating lives of our active landfill sites based on available and probable disposal capacity using current annual volumes as of December 31, 2022:

Number of Sites without Probable Expansion AirspaceNumber of Sites with Probable Expansion AirspaceTotal SitesPercent of Total
0 to 5 years232311.2%
6 to 10 years20209.7
11 to 20 years2743115.0
21 to 40 years5145526.7
41+ years7257737.4
Total19313206100.0%

Final Capping, Closure and Post-Closure Costs

As of December 31, 2022, accrued final capping, closure and post-closure costs were $1,786.4 million, of which $75.2 million were current and $1,711.2 million were long-term as reflected in our consolidated balance sheets in accrued landfill and environmental costs included in Part II, Item 8 of this Annual Report on Form 10-K.

Remediation and Other Charges for Landfill Matters

It is reasonably possible that we will need to adjust our accrued landfill and environmental liabilities to reflect the effects of new or additional information, to the extent that such information impacts the costs, timing or duration of the required actions. Future changes in our estimates of the costs, timing or duration of the required actions could have a material adverse effect on our consolidated financial position, results of operations and cash flows.

For a description of our significant remediation matters, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Investment in Landfills

As of December 31, 2022, we expect to spend an estimated additional $10.7 billion on existing landfills, primarily related to cell construction and environmental structures, over their remaining lives. Our total expected investment, excluding non-depletable land, estimated to be $15.6 billion, or $3.11 per cubic yard, is used in determining our depletion and amortization expense based on airspace consumed using the units-of-consumption method.

The following table reflects our future expected investment as of December 31, 2022 (in millions):

Balance as of December 31, 2022Expected Future InvestmentTotal Expected Investment
Non-depletable landfill land$255.2$$255.2
Landfill development costs9,574.210,696.720,270.9
Construction-in-progress – landfill358.3358.3
Accumulated depletion and amortization(5,058.9)(5,058.9)
Net investment in landfill land and development costs$5,128.8$10,696.7$15,825.5

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The following table reflects our net investment in our landfills, excluding non-depletable land, and our depletion, amortization and accretion expense for the years ended December 31, 2022 and 2021:

20222021
Number of landfills owned or operated206198
Net investment, excluding non-depletable land (in millions)$4,873.6$4,193.3
Total estimated available disposal capacity (in millions of cubic yards)5,014.35,012.7
Net investment per cubic yard$0.97$0.84
Landfill depletion and amortization expense (in millions)$433.7$376.8
Accretion expense (in millions)89.682.7
523.3459.5
Airspace consumed (in millions of cubic yards)85.079.3
Depletion, amortization and accretion expense per cubic yard of airspace consumed$6.16$5.79

During 2022 and 2021, our average compaction rate was approximately 2,000 pounds per cubic yard based primarily on a three-year historical moving average.

Property and Equipment

The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2022 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2021Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2022
Land$694.9$2.4$(1.7)$85.0$$$(0.9)$779.7
Landfill development costs8,539.614.5590.460.120.2349.49,574.2
Vehicles and equipment8,576.9759.6(272.6)300.0101.49,465.3
Buildings and improvements1,508.457.9(10.0)126.921.41,704.6
Construction-in-progress - landfill279.3390.938.6(350.5)358.3
Construction-in-progress - other182.9338.0(0.2)(1.1)(161.0)358.6
Total$19,782.0$1,563.3$(284.5)$1,139.8$60.1$20.2$(40.2)$22,240.7
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2021Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2022
Landfill development costs$(4,625.6)$(440.1)$$(1.6)$5.7$2.7$(5,058.9)
Vehicles and equipment(5,231.6)(735.9)265.77.614.3(5,679.9)
Buildings and improvements(692.7)(79.4)6.90.66.7(757.9)
Total$(10,549.9)$(1,255.4)$272.6$6.6$5.7$23.7$(11,496.7)

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The following tables reflect the activity in our property and equipment accounts for the year ended December 31, 2021 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2020Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2021
Land$633.4$32.7$(3.9)$16.6$$$16.1$694.9
Landfill development costs7,991.76.565.546.758.9370.38,539.6
Vehicles and equipment8,119.0651.0(385.2)109.382.88,576.9
Buildings and improvements1,402.524.8(6.9)20.90.566.61,508.4
Construction-in-progress - landfill303.8358.5(383.0)279.3
Construction-in-progress - other107.4240.25.3(170.0)182.9
Total$18,557.8$1,313.7$(396.0)$217.6$47.2$58.9$(17.2)$19,782.0
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2020Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2021
Landfill development costs$(4,249.5)$(369.4)$$0.5$(7.2)$$(4,625.6)
Vehicles and equipment(4,953.4)(665.4)376.310.9(5,231.6)
Buildings and improvements(628.7)(68.9)5.00.3(0.4)(692.7)
Total$(9,831.6)$(1,103.7)$381.3$0.8$(7.2)$10.5$(10,549.9)

Liquidity and Capital Resources

Cash and Cash Equivalents

The following is a summary of our cash and cash equivalents and restricted cash and marketable securities balances as of December 31:

20222021
Cash and cash equivalents$143.4$29.0
Restricted cash and marketable securities127.6139.0
Less: restricted marketable securities(56.7)(62.4)
Cash, cash equivalents, restricted cash and restricted cash equivalents$214.3$105.6

Our restricted cash and marketable securities include, among other things, restricted cash and marketable securities pledged to regulatory agencies and governmental entities as financial guarantees of our performance under certain collection, landfill and transfer station contracts and permits, and relating to our final capping, closure and post-closure obligations at our landfills, and restricted cash and marketable securities related to our insurance obligations and restricted cash related to proceeds from the issuance of tax-exempt bonds that will be used to fund qualifying landfill-related expenditures in the Commonwealth of Pennsylvania.

The following table summarizes our restricted cash and marketable securities as of December 31:

20222021
Financing proceeds$$12.4
Capping, closure and post-closure obligations39.142.4
Insurance88.584.2
Total restricted cash and marketable securities$127.6$139.0

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Material Cash Requirements and Intended Uses of Cash

We expect existing cash, cash equivalents, restricted cash and marketable securities, cash flows from operations and financing activities to continue to be sufficient to fund our operating activities and cash commitments for investing and financing activities for at least the next 12 months and thereafter for the foreseeable future. Our known current- and long-term uses of cash include, among other possible demands: (1) capital expenditures and leases, (2) acquisitions, (3) dividend payments, (4) repayments to service debt and other long-term obligations, (5) payments for asset retirement obligations and environmental liabilities and (6) share repurchases.

Capital Expenditures and Leases

We make investments in property and equipment primarily to allow for growth of our service offerings. These investments are largely concentrated in vehicles and equipment and costs to construct our landfills. We expect to receive between $1.65 billion to $1.67 billion of property and equipment, net of proceeds from the sale of property and equipment, in 2023.

We lease property and equipment in the ordinary course of business under various lease agreements. The most significant lease obligations are for real property and equipment specific to our industry, including property operated as a landfill or transfer station and operating equipment. As of December 31, 2022, the amount of total future lease payments under operating and finance leases was $335.0 million and $430.3 million, respectively. For additional detail regarding our lease obligations, see Note 10, Leases, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Acquisitions

Our acquisition growth strategy focuses primarily on acquiring privately held recycling and solid waste companies and environmental solutions businesses that complement our existing business platform. We continue to invest in value-enhancing acquisitions in existing markets.

We expect to invest at least $500 million in acquisitions in 2023.

Dividend Payments

In October 2022, our Board of Directors approved a quarterly dividend of $0.495 per share. Aggregate cash dividends declared were $603.4 million for the year ended December 31, 2022. As of December 31, 2022, we recorded a quarterly dividend payable of $156.4 million to shareholders of record at the close of business on January 3, 2023, which was paid on January 13, 2023.

Debt and other long-term obligations

Debt repayments may include purchases of our outstanding indebtedness in the secondary market or otherwise. We believe that our excess cash, cash from operating activities and our availability to draw on our credit facilities provide us with sufficient financial resources to meet our anticipated capital requirements and maturing obligations as they come due.

We may choose to voluntarily retire certain portions of our outstanding debt before their maturity dates using cash from operations or additional borrowings. We may also explore opportunities in the capital markets to fund redemptions should market conditions be favorable. Early extinguishment of debt will result in an impairment charge in the period in which the debt is repaid. The loss on early extinguishment of debt relates to premiums paid to effectuate the repurchase and the relative portion of unamortized note discounts and debt issue costs.

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500.0 million outstanding at any one time (the Commercial Paper Cap). In August 2022, the Commercial Paper Cap was increased to $1.0 billion. As of December 31, 2022, we had $1.0 billion principal value of commercial paper issued and outstanding under the program, with a weighted average interest rate of 4.670% and weighted average maturity of 36 days. In the event of a failed re-borrowing, we currently have availability under our Credit Facility to fund the amounts borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2022.

As of December 31, 2022, the total principal value of our debt was $11.9 billion, of which $456.0 million is due in 2023.

We have several agreements that require us to dispose of a minimum number of tons at third-party disposal facilities. Under these put-or-pay agreements, we must pay for agreed-upon minimum volumes regardless of the actual number of tons placed at the facilities.

Our unconditional purchase commitments have varying expiration dates, with some extending through the remaining life of the respective landfill. Future minimum payments under unconditional purchase commitments consist primarily of (1) disposal related agreements, which include fixed or minimum royalty payments, host agreements and take-or-pay and put-or-pay agreements and (2) other obligations including committed capital expenditures and consulting service agreements. As of

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December 31, 2022, such purchase commitments, which do not qualify for recognition on our Consolidated Balance Sheets, amount to $745.2 million, of which $133.9 million was short-term.

For additional detail regarding our debt and known contractual and other obligation, see Note 9, Debt, and Note 19, Commitments and Contingencies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Asset Retirement Obligations and Environmental Liabilities

We have future obligations for final capping, closure and post-closure costs with respect to the landfills we own or operate as set forth in applicable landfill permits. As of December 31, 2022, our future obligations for final capping, closure and post-closure costs totaled $1.8 billion, of which $75.2 million was short-term.

Additionally, we are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. As of December 31, 2022, our environmental liabilities totaled $487.5 million, of which $57.4 million was short-term.

For additional detail regarding our asset retirement obligations and environmental liabilities, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Share Repurchases

In October 2020, our Board of Directors approved a $2.0 billion share repurchase authorization effective starting January 1, 2021 and extending through December 31, 2023. Share repurchases under the current program may be made through open market purchases or privately negotiated transactions in accordance with applicable federal securities laws. While the Board of Directors has approved the program, the timing of any purchases, the prices and the number of shares of common stock to be purchased will be determined by our management, at its discretion, and will depend upon market conditions and other factors. The share repurchase program may be extended, suspended or discontinued at any time. As of December 31, 2022, the remaining authorized purchase capacity under our October 2020 repurchase program was $1.5 billion.

Summary of Cash Flow Activity

The major components of changes in cash flows for 2022 and 2021 are discussed in the following paragraphs. The following table summarizes our cash flow from operating activities, investing activities and financing activities for the years ended December 31, 2022 and 2021 (in millions of dollars):

20222021
Net cash provided by operating activities$3,190.0$2,786.7
Net cash used in investing activities$(4,423.0)$(2,466.1)
Net cash provided by (used in) financing activities$1,344.2$(329.2)

Cash Flows Provided by Operating Activities

The most significant items affecting the comparison of our operating cash flows for 2022 and 2021 are summarized below.

Changes in assets and liabilities, net of effects from business acquisitions and divestitures, decreased our cash flow from operations by $231.0 million in 2022, compared to a decrease of $94.0 million during the same period in 2021, primarily as a result of the following:

•Our accounts receivable, exclusive of the change in allowance for doubtful accounts and customer credits, increased $198.8 million during 2022, due to the timing of billings net of collections, compared to a $135.4 million increase in the same period in 2021. As of December 31, 2022, our days sales outstanding were 43.3, or 31.8 days net of deferred revenue, compared to 39.2, or 27.5 days net of deferred revenue, as of December 31, 2021.

•Our prepaid expenses and other assets increased $83.8 million in 2022 compared to a $57.0 million increase in 2021, primarily due to additional SaaS implementation costs incurred related to the redesign of our general ledger, budgeting and procurement enterprise resource planning systems in 2022. Cash paid for income taxes was $185 million and $300 million for 2022 and 2021, respectively. Income taxes paid in 2022 and 2021 reflected benefits from tax credits from our continuing investments in solar energy.

•Our accounts payable increased $106.4 million during 2022 compared to a $113.8 million increase during 2021, due to the timing of payments.

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•Cash paid for capping, closure and post-closure obligations was $64.6 million during 2022 compared to $59.6 million for 2021. The increase in cash paid for capping, closure and post-closure obligations is primarily due to the timing of capping and post-closure payments at certain of our landfill sites.

•Cash paid for remediation obligations was $2.4 million lower during 2022 compared to 2021.

In addition, cash paid for interest was $311.5 million and $249.4 million, excluding net swap settlements for our fixed to floating interest rate swaps, for 2022 and 2021, respectively.

We use cash flows from operations to fund capital expenditures, acquisitions, dividend payments, debt repayments and share repurchases.

Cash Flows Used in Investing Activities

The most significant items affecting the comparison of our cash flows used in investing activities for 2022 and 2021 are summarized below:

•Capital expenditures during 2022 were $1,454.0 million as compared to $1,316.3 million for 2021.

•Proceeds from sales of property and equipment during 2022 were $32.8 million as compared to $19.5 million for 2021.

•During 2022 and 2021, we used $3,038.5 million and $1,221.7 million, respectively, for acquisitions and investments, net of cash acquired, including the cash used for the acquisition of US Ecology. During 2022 and 2021, we received $50.6 million and $46.3 million from business divestitures, respectively.

We intend to finance capital expenditures and acquisitions through cash on hand, restricted cash held for capital expenditures, cash flows from operations, our revolving credit facilities and tax-exempt bonds and other financings.

Cash Flows Used in Financing Activities

The most significant items affecting the comparison of our cash flows used in financing activities for 2022 and 2021 are summarized below:

•We issued no senior notes during 2022. During 2021, we issued $700.0 million of senior notes for cash proceeds, net of discounts and fees, of $692.3 million. Net proceeds of notes payable and long-term debt were $2,164.6 million during 2022, compared to net payments of $150.2 million in 2021. For a more detailed discussion, see the Financial Condition section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

•During 2022, we repurchased 1.6 million shares of our stock for $203.5 million. During 2021, we repurchased 2.2 million shares of our stock for $252.2 million.

•In July 2022, our Board of Directors approved an increase in our quarterly dividend to $0.495 per share. Dividends paid were $592.9 million and $552.6 million in 2022 and 2021, respectively.

•During 2022 and 2021, cash paid for purchase price holdback releases and contingent purchase price related to acquisitions was $9.6 million and $21.3 million, respectively.

Financial Condition

Debt Obligations

As of December 31, 2022, we had $456.0 million of principal debt maturing within the next 12 months, which includes certain variable rate tax-exempt financing, debentures and finance lease obligations. All of our tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agent is unable to remarket our bonds, the remarketing agent can put the bonds to us. In the event of a failed remarketing, as of December 31, 2022, we had availability under our $3.0 billion unsecured revolving credit facility to fund these bonds until they are remarketed successfully. In the event of a failed re-borrowing under our commercial paper program, we currently have availability under our Credit Facility to fund the amounts borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these tax-exempt financings and commercial paper program borrowings as long-term in our consolidated balance sheet as of December 31, 2022.

For further discussion of the components of our overall debt, see Note 9, Debt, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Credit Facilities

The Credit Facility

In August 2021, we entered into a $3.0 billion unsecured revolving credit facility (the Credit Facility). Borrowings under the Credit Facility mature in August 2026. As permitted by the Credit Facility, we have the right to request two one-year extensions of the maturity date, but none of the lenders are committed to participate in such extension. The Credit Facility also includes a feature that allows us to increase availability, at our option, by an aggregate amount of up to $1.0 billion through increased commitments from existing lenders or the addition of new lenders.

At our option, borrowings under the Credit Facility bear interest at a Base Rate, a daily floating London Interbank Offered Rate (LIBOR), or a Eurodollar Rate, plus a current applicable margin of 0.910% based on our Debt Ratings (all as defined in the Credit Facility agreement). On the earliest of (i) the date that all available tenors of United States dollar LIBOR have permanently or indefinitely ceased to be provided or have been announced to be no longer representative, (ii) June 30, 2023 or (iii) the effective date of an election to opt into a secured overnight financing rate (SOFR), the LIBOR rate will be replaced by a forward-looking term rate based on SOFR or a daily rate based on SOFR published on such date.

The Credit Facility is subject to facility fees based on applicable rates defined in the Credit Facility agreement and the aggregate commitment, regardless of usage. Availability under our Credit Facility totaled $1,402.4 million and $2,633.8 million as of December 31, 2022 and 2021, respectively. The Credit Facility can be used for working capital, capital expenditures, acquisitions, letters of credit and other general corporate purposes. The Credit Facility agreement requires us to comply with financial and other covenants. We may pay dividends and repurchase common stock if we are in compliance with these covenants.

We had $250.0 million and $24.3 million in borrowings outstanding under our Credit Facility as of December 31, 2022 and 2021, respectively. We had $347.6 million and $341.9 million of letters of credit outstanding under our Credit Facility as of December 31, 2022 and 2021, respectively.

Uncommitted Credit Facility

In January 2022, we entered into a $200.0 million unsecured uncommitted revolving credit facility (the Uncommitted Credit Facility), which replaced the prior $135.0 million uncommitted credit facility. The Uncommitted Credit Facility bears interest at an annual percentage rate to be agreed upon by both parties. Borrowings under the Uncommitted Credit Facility can be used for working capital, letters of credit and other general corporate purposes. The agreement governing our Uncommitted Credit Facility requires us to comply with certain covenants. The Uncommitted Credit Facility may be terminated by either party at any time. As of December 31, 2022 and 2021, we had no borrowings outstanding under our Uncommitted Credit Facility.

Financial and Other Covenants

The Credit Facility requires us to comply with financial and other covenants. To the extent we are not in compliance with these covenants, we cannot pay dividends or repurchase common stock. Compliance with covenants also is a condition for any incremental borrowings under the Credit Facility, and failure to meet these covenants would enable the lenders to require repayment of any outstanding loans (which would adversely affect our liquidity). Additionally, if we are not in compliance with these covenants, we could not use the availability under our Credit Facility to fund borrowings we currently make under our commercial paper program, if there is a failed reborrowing under that program. The Credit Facility provides that our total debt to EBITDA ratio may not exceed 3.75 to 1.00 as of the last day of any fiscal quarter. In the case of an "elevated ratio period", which may be elected by us if one or more acquisitions during a fiscal quarter involve aggregate consideration in excess of $200.0 million (the Trigger Quarter), the total debt to EBITDA ratio may not exceed 4.25 to 1.00 during the Trigger Quarter and each of the following three fiscal quarters. The Credit Facility also provides that there may not be more than two elevated ratio periods elected during the term of the Credit Facility agreement. During the second quarter of 2022, we exercised the elevated ratio clause in conjunction with our acquisition of US Ecology; as a result, we are subject to a 4.25 to 1.00 total debt to EBITDA ratio through March 31, 2023. We were in compliance with this debt covenant for each quarter of 2022. As of December 31, 2022, our total debt to EBITDA ratio was 3.12 compared to the 4.25 maximum allowed. As of December 31, 2022, we were in compliance with all other covenants under our Credit Facility.

EBITDA, which is a non-U.S. GAAP measure, is calculated as defined in our Credit Facility agreement. In this context, EBITDA is used solely to provide information regarding the extent to which we are in compliance with debt covenants and is not comparable to EBITDA used by other companies or used by us for other purposes.

Failure to comply with the financial and other covenants under the Credit Facility, as well as the occurrence of certain material adverse events, would constitute defaults and would allow the lenders under the Credit Facility to accelerate the maturity of all indebtedness under the Credit Facility. This could have an adverse effect on the availability of financial assurances. In addition, maturity acceleration on the Credit Facility constitutes an event of default under our other debt and derivative instruments, including our senior notes, and, therefore, our senior notes would also be subject to acceleration of maturity. If such

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acceleration were to occur, we would not have sufficient liquidity available to repay the indebtedness. We would likely have to seek an amendment under the Credit Facility for relief from the financial covenant or repay the debt with proceeds from the issuance of new debt or equity, or asset sales, if necessary. We may be unable to amend the Credit Facility or raise sufficient capital to repay such obligations in the event the maturity is accelerated.

Term Loan Facility

On April 29, 2022, we entered into a $1.0 billion unsecured Term Loan Facility (Term Loan Facility), which will mature on April 29, 2025. The Term Loan Facility bears interest at a base rate or a forward-looking SOFR, plus an applicable margin based on our debt ratings. The current weighted average interest rate for the year ended December 31, 2022 is 4.629%.

On May 2, 2022, we completed the acquisition of US Ecology using proceeds from the Term Loan Facility and borrowings under the Credit Facility. We had $1.0 billion in borrowings outstanding under the Term Loan Facility as of December 31, 2022.

Commercial Paper Program

In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed the Commercial Paper Cap. As of December 31, 2022, we had $1.0 billion principal value of commercial paper issued and outstanding under the program, with a weighted average interest rate of 4.670% and weighted average maturity of 36 days for the year ended December 31, 2022. In the event of a failed re-borrowing, we currently have availability under our Credit Facility to fund amounts currently borrowed under the commercial paper program until they are re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2022.

Senior Notes and Debentures

As of December 31, 2022, we had $8,107.8 million of unsecured senior notes and debentures, with maturities ranging from 2023 to 2050. Our senior notes and debentures are general unsecured obligations. Interest is payable semi-annually.

Derivative Instruments and Hedging Relationships

Our ability to obtain financing through the capital markets is a key component of our financial strategy. Historically, we have managed risk associated with executing this strategy, particularly as it relates to fluctuations in interest rates, by using a combination of fixed and floating rate debt. From time to time, we also have entered into interest rate swap and lock agreements to manage risk associated with interest rates, either to effectively convert specific fixed rate debt to a floating rate (fair value hedges), or to lock interest rates in anticipation of future debt issuances (cash flow hedges). We also acquired and novated a floating-to-fixed interest rate swap designated as a cash flow hedge in connection with our acquisition of US Ecology.

Additionally, we amended certain interest rate lock agreements, extending the mandatory maturity date and dedesignated them as cash flow hedges (the Extended Interest Rate Locks). In addition, we entered into offsetting interest rate swaps to offset future exposures to fair value fluctuations of the Extended Interest Rate Locks.

For a description of our derivative contracts and hedge accounting, see Note 9, Debt, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Tax-Exempt Financings

As of December 31, 2022 and 2021, we had $1,182.0 million and $1,181.5 million of certain variable rate tax-exempt financings outstanding, respectively, with maturities ranging from 2023 to 2051. There were no tax-exempt financings issued during 2022. During 2021, we issued $205.0 million of tax-exempt financings.

In the fourth quarter of 2021, the Pennsylvania Economic Development Financing Authority issued, for our benefit, $30.0 million of Solid Waste Disposal Revenue Bonds. The proceeds from the issuance, after deferred issuance costs, will be used to fund qualifying landfill-related expenditures in the Commonwealth of Pennsylvania, of which $30.0 million and $17.2 million was incurred and reimbursed to us as of December 31, 2022 and 2021, respectively.

As of December 31, 2022 and 2021, we had $127.6 million and $139.0 million, respectively, of restricted cash and marketable securities. As of December 31, 2021, $12.4 million of the restricted cash and marketable securities balance represented proceeds from the issuance of the tax-exempt bonds.

Finance Leases

We had finance lease liabilities of $247.5 million and $249.4 million as of December 31, 2022 and 2021, respectively, with maturities ranging from 2023 to 2063 and 2022 to 2063, respectively.

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Credit Ratings

Our continued access to the debt capital markets and to new financing facilities, as well as our borrowing costs, depend on multiple factors, including market conditions, our operating performance and maintaining strong credit ratings. As of December 31, 2022, our credit ratings were BBB+, Baa2 and BBB+ by Standard & Poor’s Ratings Services, Moody’s Investors Service and Fitch Ratings, Inc., respectively. If our credit ratings were downgraded, especially any downgrade to below investment grade, our ability to access the debt markets with the same flexibility that we have experienced historically, our cost of funds and other terms for new debt issuances, could be adversely impacted.

Off-Balance Sheet Arrangements

We have no off-balance sheet debt or similar obligations, other than short-term operating leases and financial assurances, which are not classified as debt. We have no transactions or obligations with related parties that are not disclosed, consolidated into or reflected in our reported financial position or results of operations. We have not guaranteed any third-party debt.

Seasonality and Severe Weather

Our operations can be adversely affected by periods of inclement or severe weather, which could increase the volume of waste collected under our existing contracts (without corresponding compensation), delay the collection and disposal of waste, reduce the volume of waste delivered to our disposal sites, or delay the construction or expansion of our landfills and other facilities. Our operations also can be favorably affected by severe weather, which could increase the volume of waste in situations where we are able to charge for our additional services.

Contingencies

For a description of our commitments and contingencies, see Note 8, Landfill and Environmental Costs, Note 11, Income Taxes and Note 19, Commitments and Contingencies, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Financial Assurance

We must provide financial assurance to governmental agencies and a variety of other entities under applicable environmental regulations relating to our landfill operations for capping, closure and post-closure costs, and related to our performance under certain collection, landfill and transfer station contracts. We satisfy these financial assurance requirements by providing surety bonds, letters of credit, or insurance policies (Financial Assurance Instruments), or trust deposits, which are included in restricted cash and marketable securities and other assets in our consolidated balance sheets. The amount of the financial assurance requirements for capping, closure and post-closure costs is determined by applicable state environmental regulations. The financial assurance requirements for capping, closure and post-closure costs may be associated with a portion of the landfill or the entire landfill. Generally, states require a third-party engineering specialist to determine the estimated capping, closure and post-closure costs that are used to determine the required amount of financial assurance for a landfill. The amount of financial assurance required can, and generally will, differ from the obligation determined and recorded under U.S. GAAP. The amount of the financial assurance requirements related to contract performance varies by contract. Additionally, we must provide financial assurance for our insurance program and collateral for certain performance obligations. We do not expect a material increase in financial assurance requirements during 2023, although the mix of Financial Assurance Instruments may change.

These Financial Assurance Instruments are issued in the normal course of business and are not classified as indebtedness. Because we currently have no liability for the Financial Assurance Instruments, they are not reflected in our consolidated balance sheets; however, we record capping, closure and post-closure liabilities and insurance liabilities as they are incurred.

Critical Accounting Judgments and Estimates

Our consolidated financial statements have been prepared in accordance with U.S. GAAP and necessarily include certain estimates and judgments made by management. The following is a list of accounting policies that we believe are the most critical in understanding our consolidated financial position, results of operations and cash flows and that may require management to make subjective or complex judgments about matters that are inherently uncertain. Our critical accounting estimates are those estimates that involve a significant level of uncertainty at the time the estimate was made, and changes in them have had or are reasonably likely to have a material effect on our financial condition or results of operations. Accordingly, actual results could differ materially from our estimates. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Such critical accounting policies, estimates and judgments are applicable to all of our operating segments.

We have noted examples of the estimates that are subject to uncertainty in the accounting for these areas below.

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Landfill Accounting

Landfill operating costs are treated as period expenses and are not discussed further in this section.

Our landfill assets and liabilities fall into the following two categories, each of which requires accounting judgments and estimates:

•Landfill development costs that are capitalized as an asset.

•Landfill retirement obligations relating to our capping, closure and post-closure liabilities that result in a corresponding landfill retirement asset.

We use life-cycle accounting and the units-of-consumption method to recognize landfill development costs over the life of the site. In life-cycle accounting, all current and future capitalized costs to acquire and construct a site are calculated and charged to expense based on the consumption of cubic yards of available airspace. Obligations associated with final capping, closure and post-closure are also capitalized and amortized on a units-of-consumption basis as airspace is consumed. Cost and airspace estimates are developed at least annually by engineers.

Landfill Development Costs

As of December 31, 2022 and 2021, we had net landfill development costs of $4,515.3 million and $3,914.0 million, respectively. Changes in these estimates may be sensitive to changes in cost estimates, inflation and applicable regulations.

Site permits. To develop, construct and operate a landfill, we must obtain permits from various regulatory agencies at the local, state and federal levels. The permitting process requires an initial site study to determine whether the location is feasible for landfill operations. The initial studies are reviewed by our environmental management group and then submitted to the regulatory agencies for approval. During the development stage we capitalize certain costs that we incur after site selection but before the receipt of all required permits if we believe that it is probable that the site will be permitted.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements may cause changes to the landfill site permitting process. These changes could make it more difficult and costly to obtain and maintain a landfill permit.

•Studies performed could be inaccurate, which could result in the denial or revocation of a permit and changes to accounting assumptions. Conditions could exist that were not identified in the study, which may make the location not feasible for a landfill and could result in the denial of a permit. Denial or revocation of a permit could impair the recorded value of the landfill asset.

•Actions by neighboring parties, private citizen groups or others to oppose our efforts to obtain, maintain or expand permits could result in denial, revocation or suspension of a permit, which could adversely impact the economic viability of the landfill and could impair the recorded value of the landfill. As a result of opposition to our obtaining a permit, improved technical information as a project progresses, or changes in the anticipated economics associated with a project, we may decide to reduce the scope of, or abandon, a project, which could result in an asset impairment.

Technical landfill design. Upon receipt of initial regulatory approval, technical landfill designs are prepared. The technical designs, which include the detailed specifications to develop and construct all components of the landfill including the types and quantities of materials that will be required, are reviewed by our environmental management group. The technical designs are submitted to the regulatory agencies for approval. Upon approval of the technical designs, the regulatory agencies issue permits to develop and operate the landfill.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements may require changes in the landfill technical designs. These changes could make it more difficult and costly to meet new design standards.

•Technical design requirements, as approved, may need modifications at some future point in time.

•Technical designs could be inaccurate and could result in increased construction costs, difficulty in obtaining a permit or the use of rates to recognize the amortization of landfill development costs and asset retirement obligations that are not appropriate.

Permitted and probable landfill disposal capacity. Included in the technical designs are factors that determine the ultimate disposal capacity of the landfill. These factors include the area over which the landfill will be developed, such as the depth of excavation, the height of the landfill elevation and the angle of the side-slope construction. The disposal capacity of the landfill is calculated in cubic yards. This measurement of volume is then converted to a disposal capacity expressed in tons based on a site-specific expected density to be achieved over the remaining operating life of the landfill.

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These estimates are subject to uncertainty attributable to:

•Estimates of future disposal capacity may change as a result of changes in legislative or regulatory design requirements.

•The density of waste may vary due to variations in operating conditions, including waste compaction practices, site design, climate and the nature of the waste.

•Capacity is defined in cubic yards but waste received is measured in tons. The number of tons per cubic yard varies by type of waste and our rate of compaction.

Development costs. The types of costs that are detailed in the technical design specifications generally include excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection systems and monitoring probes, installation of groundwater monitoring wells, construction of leachate management facilities and other costs associated with the development of the site. We review the adequacy of our cost estimates on an annual basis by comparing estimated costs with third-party bids or contractual arrangements, reviewing the changes in year-over-year cost estimates for reasonableness, and comparing our resulting development cost per acre with prior period costs. These development costs, together with any costs incurred to acquire, design and permit the landfill, including capitalized interest, are recorded to the landfill asset on the balance sheet as incurred.

These estimates are subject to uncertainty attributable to:

•Actual future costs of construction materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor. Technical designs could be altered due to unexpected operating conditions, regulatory changes or legislative changes.

Landfill development asset amortization. To match the expense related to the landfill asset with the revenue generated by the landfill operations, we amortize the landfill development asset over its operating life on a per-ton basis as waste is accepted at the landfill. The landfill asset is fully amortized at the end of a landfill’s operating life. The per-ton rate is calculated by dividing the sum of the landfill development asset net book value plus estimated future development costs (as described above) for the landfill, by the landfill’s estimated remaining disposal capacity. The expected future development costs are not inflated or discounted, but rather expressed in nominal dollars. This rate is applied to each ton accepted at the landfill to arrive at amortization expense for the period.

Amortization rates may be sensitive to the original cost basis of the landfill, including acquisition costs, which in turn is determined by geographic location and market values. We secure significant landfill assets through business acquisitions and value them at the time of acquisition based on fair value. Amortization rates are also influenced by site-specific engineering and cost factors.

These estimates are subject to uncertainty attributable to:

•Changes in our future development cost estimates or our disposal capacity will normally result in a change in our amortization rates and will impact amortization expense prospectively. An unexpected significant increase in estimated costs or reduction in disposal capacity could affect the ongoing economic viability of the landfill and result in asset impairment.

On at least an annual basis, we update the estimates of future development costs and remaining disposal capacity for each landfill. These costs and disposal capacity estimates are reviewed and approved by senior operations management annually. Changes in cost estimates and disposal capacity are reflected prospectively in the landfill amortization rates that are updated annually. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Landfill Asset Retirement Obligations

We have two types of retirement obligations related to landfills: (1) capping and (2) closure and post-closure. As of December 31, 2022 and 2021, our asset retirement obligations related to capping, closure and post-closure were $1,786.4 million and $1,507.3 million, respectively. Changes in these estimates may be sensitive to changes in available airspace, cost estimates, inflation, our credit-adjusted, risk-free interest rate and applicable regulations.

Obligations associated with final capping activities that occur during the operating life of the landfill are recognized on a units-of-consumption basis as airspace is consumed within each discrete capping event. Obligations related to closure and post-closure activities that occur after the landfill has ceased operations are recognized on a units-of-consumption basis as airspace is consumed throughout the entire life of the landfill. Landfill retirement obligations are capitalized as the related liabilities are recognized and amortized using the units-of-consumption method over the airspace consumed within the capping event or the airspace consumed within the entire landfill, depending on the nature of the obligation. All obligations are initially measured at

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estimated fair value. Fair value is calculated on a present value basis using an inflation rate and our credit-adjusted, risk-free rate in effect at the time the liabilities were incurred. Future costs for final capping, closure and post-closure are developed at least annually by engineers, and are inflated to future value using estimated future payment dates and inflation rate projections.

Landfill capping. As individual areas within each landfill reach capacity, we must cap and close the areas in accordance with the landfill site permit. These requirements are detailed in each landfill's technical design, which is reviewed and approved by the regulatory agency issuing the landfill site permit.

Closure and post-closure. Closure costs are costs incurred after a landfill stops receiving waste, but prior to being certified as closed. After the entire landfill has reached capacity and is certified closed, we must continue to maintain and monitor the site for a post-closure period, which generally extends for 30 years. Costs associated with closure and post-closure requirements generally include maintenance of the site, the monitoring of methane gas collection systems and groundwater systems and other activities that occur after the site has ceased accepting waste. Costs associated with post-closure monitoring generally include groundwater sampling, analysis and statistical reports, third-party labor associated with gas system operations and maintenance, transportation and disposal of leachate and erosion control costs related to the final cap.

Landfill retirement obligation liabilities and assets. Estimates of the total future costs required to cap, close and monitor each landfill as specified by the landfill permit are updated annually. The estimates include inflation, the specific timing of future cash outflows and the anticipated waste flow into the capping events. Our cost estimates are inflated to the period of performance using an estimate of inflation, which is updated annually and is based upon the ten year average consumer price index (1.9% in 2022 and 1.7% in 2021).

The present value of the remaining capping costs for specific capping events and the remaining closure and post-closure costs for each landfill are recorded as incurred on a per-ton basis. These liabilities are incurred as disposal capacity is consumed at the landfill.

Capping, closure and post-closure liabilities are recorded in layers and discounted using our credit-adjusted risk-free rate in effect at the time the obligation is incurred (4.2% in 2022 and 3.4% in 2021 ).

Retirement obligations are increased each year to reflect the passage of time by accreting the balance at the weighted average credit-adjusted risk-free rate that was used to calculate each layer of the recorded liabilities. This accretion is charged to operating expenses. Actual cash expenditures reduce the asset retirement obligation liabilities as they are made.

Corresponding retirement obligation assets are recorded for the same value as the additions to the capping, closure and post-closure liabilities. The retirement obligation assets are amortized to expense on a per-ton basis as disposal capacity is consumed. The per-ton rate is calculated by dividing the sum of each of the recorded retirement obligation asset’s net book value and expected future additions to the retirement obligation asset by the remaining disposal capacity. A per-ton rate is determined for each separate capping event based on the disposal capacity relating to that event. Closure and post-closure per-ton rates are based on the total disposal capacity of the landfill.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements, including changes in capping, closure activities or post-closure monitoring activities, types and quantities of materials used, or term of post-closure care, could cause changes in our cost estimates.

•Changes in the landfill retirement obligation due to changes in the anticipated waste flow, changes in airspace compaction estimates or changes in the timing of expenditures for closed landfills and fully incurred but unpaid capping events are recorded in results of operations prospectively. This could result in unanticipated increases or decreases in expense.

•Actual timing of disposal capacity utilization could differ from projected timing, causing differences in timing of when amortization and accretion expense is recognized for capping, closure and post-closure liabilities.

•Changes in inflation rates could impact our actual future costs and our total liabilities.

•Changes in our capital structure or market conditions could result in changes to the credit-adjusted risk-free rate used to discount the liabilities, which could cause changes in future recorded liabilities, assets and expense.

•Amortization rates could change in the future based on the evaluation of new facts and circumstances relating to landfill capping design, post-closure monitoring requirements, or the inflation or discount rate.

On an annual basis, we update our estimates of future capping, closure and post-closure costs and of future disposal capacity for each landfill. Revisions in estimates of our costs or timing of expenditures are recognized immediately as increases or decreases to the capping, closure and post-closure liabilities and the corresponding retirement obligation assets. Changes in the assets result in changes to the amortization rates which are applied prospectively, except for fully incurred capping events and closed

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landfills, where the changes are recorded immediately in results of operations since the associated disposal capacity has already been consumed. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Permitted and probable disposal capacity. Disposal capacity is determined by the specifications detailed in the landfill permit. We classify this disposal capacity as permitted. We also include probable expansion disposal capacity in our remaining disposal capacity estimates, thus including additional disposal capacity being sought through means of a permit expansion. Probable expansion disposal capacity has not yet received final approval from the applicable regulatory agencies, but we have determined that certain critical criteria have been met and that the successful completion of the expansion is probable. We have developed six criteria that must be met before an expansion area is designated as probable expansion airspace. We believe that satisfying all of these criteria demonstrates a high likelihood that expansion airspace that is incorporated in our landfill costing will be permitted. However, because some of these criteria are judgmental, they may exclude expansion airspace that will eventually be permitted or include expansion airspace that will not be permitted. In either of these scenarios, our amortization, depletion and accretion expense could change significantly. Our internal criteria to classify disposal capacity as probable expansion airspace are as follows:

•We own the land associated with the expansion airspace or control it pursuant to an option agreement;

•We are committed to supporting the expansion project financially and with appropriate resources;

•There are no identified fatal flaws or impediments associated with the project, including political impediments;

•Progress is being made on the project;

•The expansion is attainable within a reasonable time frame; and

•We believe it is likely we will receive the expansion permit.

After successfully meeting these criteria, the disposal capacity that will result from the planned expansion is included in our remaining disposal capacity estimates. Additionally, for purposes of calculating landfill amortization and capping, closure and post-closure rates, we include the incremental costs to develop, construct, close and monitor the related probable expansion disposal capacity.

These estimates are subject to uncertainty attributable to:

•We may be unsuccessful in obtaining permits for probable expansion disposal capacity because of the failure to obtain the final local, state, provincial, or federal permits or due to other unknown reasons. If we are unsuccessful in obtaining permits for probable expansion disposal capacity, or the disposal capacity for which we obtain approvals is less than what was estimated, both our estimated total costs and disposal capacity will be reduced, which generally increases the rates we charge for landfill amortization and capping, closure and post-closure accruals. An unexpected decrease in disposal capacity could also cause an asset impairment.

Environmental Liabilities

We are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Under current laws and regulations, we may be responsible for environmental remediation at sites that we either own or operate, including sites that we have acquired, or sites where we have (or a company that we have acquired has) delivered waste. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. To estimate our ultimate liability at these sites, we evaluate several factors, including the nature and extent of contamination at each identified site, the required remediation methods, timing of expenditures, the apportionment of responsibility among the potentially responsible parties and the financial viability of those parties. We accrue for costs associated with environmental remediation obligations when such costs are probable and reasonably estimable in accordance with accounting for loss contingencies. We periodically review the status of all environmental matters and update our estimates of the likelihood of and future expenditures for remediation as necessary. Changes in the liabilities resulting from these reviews are recognized currently in earnings in the period in which the adjustment is known. Adjustments to estimates are reasonably possible in the near term and may result in changes to recorded amounts. With the exception of those obligations assumed in certain business combinations, environmental obligations are recorded on an undiscounted basis. Environmental obligations assumed in certain business combinations are initially estimated on a discounted basis, and accreted to full value over time through charges to interest expense. Adjustments arising from changes in amounts and timing of estimated costs and settlements may result in increases or decreases in these obligations and are calculated on a discounted basis as they were initially estimated on a discounted basis. These adjustments are charged to operating income when they are known. We perform a comprehensive review of our environmental obligations annually and also review changes in facts and circumstances associated with these obligations at least quarterly. See our Results of Operations section in this Management's Discussion and

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Analysis of Financial Condition and Results of Operations for discussion on our remediation adjustments. We have not reduced the liabilities we have recorded for recoveries from other potentially responsible parties or insurance companies. As of December 31, 2022 and 2021, we had $487.5 million and $454.9 million of environmental liabilities, respectively. Changes in these estimates may be sensitive to changes in cost estimates, timing of estimated costs and settlements, inflation, our credit-adjusted, risk-free interest rate and applicable regulations.

These estimates are subject to uncertainty attributable to:

•We cannot determine with precision the ultimate amounts of our environmental remediation liabilities. Our estimates of these liabilities require assumptions about uncertain future events. Thus, our estimates could change substantially as additional information becomes available regarding the nature or extent of contamination, the required remediation methods, timing of expenditures, the final apportionment of responsibility among the potentially responsible parties identified, the financial viability of those parties and the actions of governmental agencies or private parties with interests in the matter. The actual environmental costs may exceed our current and future accruals for these costs, and any adjustments could be material.

•Actual amounts could differ from the estimated liabilities as a result of changes in estimated future litigation costs to pursue the matter to ultimate resolution.

•An unanticipated environmental liability that arises could result in a material charge to our consolidated statements of income.

Insurance Reserves and Related Costs

Our insurance policies for workers' compensation, commercial general liability, commercial auto liability and environmental liability are high deductible, or retention programs. The deductibles, or retentions, range from $3 million to $10 million. The employee-related health benefits are also subject to a high-deductible insurance policy. Accruals for deductibles or retentions are based on claims filed and actuarial estimates of claims development and claims incurred but not reported. As of December 31, 2022 and 2021, our insurance reserves were $502.6 million and $497.4 million, respectively. Changes in these estimates may be sensitive to changes in the frequency, severity and settlement amount of claims.

These estimates are subject to uncertainty attributable to:

•Incident rates, including frequency and severity and other actuarial assumptions could change causing our current and future actuarially determined obligations to change, which would be reflected in our consolidated statements of income in the period in which such adjustment is known.

•Recorded reserves may not be adequate to cover the future payment of claims. Adjustments, if any, to estimates recorded resulting from ultimate claim payments would be reflected in the consolidated statements of income in the periods in which such adjustments are known.

•The settlement costs to discharge our obligations, including legal and health care costs, could increase or decrease causing current estimates of our insurance reserves to change.

New Accounting Standards

For a description of new accounting standards that may affect us, see Note 2, Summary of Significant Accounting Policies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

FY 2021 10-K MD&A

SEC filing source: 0001060391-22-000007.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2022-02-11. Report date: 2021-12-31.

ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our audited consolidated financial statements and the notes thereto included in Part II, Item 8 of this Annual Report on Form 10-K. This discussion may contain forward-looking statements that anticipate results that are subject to uncertainty. We discuss in more detail various factors that could cause actual results to differ from expectations in Part I, Item 1A, Risk Factors in this Annual Report on Form 10-K.

For further discussion regarding our results of operations for the year ended December 31, 2020 as compared to the year ended December 31, 2019, refer to Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Impact of the COVID-19 Pandemic

In March 2020, the World Health Organization declared the outbreak of a new strain of coronavirus (COVID-19) a pandemic. The COVID-19 pandemic has negatively impacted the global economy, disrupted global supply chains and created significant volatility and disruption of financial markets. The full extent of the impact of the COVID-19 pandemic on our operations and financial performance will depend on future developments, including the duration and spread of the pandemic, all of which are uncertain and cannot be predicted at this time.

In mid-March 2020, certain customers in our small- and large-container businesses began adjusting their service levels, which included a decrease in the frequency of pickups or a temporary pause in service. In addition, we experienced a decline in volumes disposed at certain of our landfills and transfer stations. As service levels decreased, we also experienced a decrease in certain costs of our operations which are variable in nature. This decline in service activity peaked in the first half of April 2020 and improved sequentially through December 31, 2021.

In April 2020, we launched our Committed to Serve initiative and committed $20 million to support frontline employees and

their families, as well as small business customers in the local communities where we serve. In addition to this initiative, we

have experienced an increase in certain costs of doing business as a direct result of the COVID-19 pandemic, including costs

for additional safety equipment and hygiene products and increased facility and equipment cleaning. These costs are intended to

assist in protecting the safety of our frontline employees as we continue to provide an essential service to our customers. In

2020 and 2021, we recognized our frontline employees for their commitment and contributions to their communities during the pandemic with awards that were paid in January 2021 and November 2021, respectively. In addition, we incurred incremental costs associated with expanding certain aspects of our existing healthcare programs. We may continue to incur similar costs in future years, although we expect the annual amount of such costs to be less than those incurred in 2020.

The effects of the COVID-19 pandemic on our business are described in more detail in the Results of Operations discussion in this Management's Discussion and Analysis of Financial Condition and Results of Operations.

Recent Developments

Acquisition of US Ecology

On February 8, 2022, we entered into a definitive agreement to acquire all outstanding shares of US Ecology, Inc. (US Ecology) in a transaction valued at approximately $2.2 billion, including debt. US Ecology is a leading provider of environmental solutions offering treatment, recycling and disposal of hazardous, non-hazardous and specialty waste. We intend to finance the transaction using existing and new sources of debt.

The guidance included herein does not contemplate the impact from the pending acquisition of US Ecology, which is subject to regulatory and other approvals.

2022 Financial Guidance

In 2022, we will focus on driving profitable growth, making disciplined acquisition investments, maintaining an inclusive and engaging culture for our people, delivering a superior customer experience, and advancing technology to drive operational excellence. Our team remains focused on executing our strategy to deliver consistent earnings and free cash flow growth, and improving return on invested capital, while partnering with customers to create a more sustainable world. We are committed to maintaining an efficient capital structure, preserving our investment grade credit ratings and increasing cash returned to our shareholders.

Our guidance is based on current economic conditions and does not assume any significant changes in the overall economy in 2022. Specific guidance follows:

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Revenue

We expect an increase in average yield of approximately 3.4% and volume growth to be in a range of 1.5% to 2.0%.

Adjusted Diluted Earnings per Share

The following is a summary of anticipated adjusted diluted earnings per share for the year ending December 31, 2022 compared to the actual adjusted diluted earnings per share for the year ended December 31, 2021. Adjusted diluted earnings per share is not a measure determined in accordance with U.S. GAAP:

(Anticipated) Year Ending December 31, 2022(Actual) Year Ended December 31, 2021
Diluted earnings per share$ 4.53 to 4.60$4.04
Restructuring charges0.050.04
Loss on business divestitures and impairments, net0.02
Accelerated vesting of compensation expense for CEO transition0.07
Adjusted diluted earnings per share$ 4.58 to 4.65$4.17

We believe that the presentation of adjusted diluted earnings per share provides an understanding of operational activities before the financial effect of certain items. We use this measure, and believe investors will find it helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate effect on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definition of adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies.

The guidance set forth above constitutes forward-looking information and is not a guarantee of future performance. The

guidance is based upon the current beliefs and expectations of our management and is subject to significant risk and

uncertainties that could cause actual results to differ materially from those shown above. See Item 1A. Risk Factors - Disclosure Regarding Forward-Looking Statements.

Overview

Republic is one of the largest providers of environmental services in the United States, as measured by revenue. As of December 31, 2021, we operated facilities in 41 states through 356 collection operations, 239 transfer stations, 198 active landfills, 71 recycling processing centers, 3 treatment, recovery and disposal facilities, 3 treatment, storage and disposal facilities (TSDF), 6 salt water disposal wells, and 7 deep injection wells. We are engaged in 77 landfill gas-to-energy and other renewable energy projects and had post-closure responsibility for 124 closed landfills.

Revenue for the year ended December 31, 2021 increased by 11.2% to $11,295.0 million compared to $10,153.6 million in 2020. This change in revenue is due to increased volume of 3.8%, average yield of 2.9%, acquisitions, net of divestitures of 2.8%, recycling processing and commodity sales of 1.1%, and fuel recovery fees of 0.8%, partially offset by decreased environmental solutions revenue of 0.1%. Additionally, revenue decreased 0.1% due to one less workday in 2021 as compared to 2020.

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The following table summarizes our revenue, costs and expenses for the years ended December 31, 2021 and 2020 (in millions of dollars and as a percentage of revenue):

20212020
Revenue$11,295.0100.0%$10,153.6100.0%
Expenses:
Cost of operations6,737.759.76,100.560.1
Depreciation, amortization and depletion of property and equipment1,111.79.81,015.910.0
Amortization of other intangible assets33.30.321.20.2
Amortization of other assets40.50.438.80.4
Accretion82.70.782.90.8
Selling, general and administrative1,195.810.61,053.010.4
Withdrawal costs - multiemployer pension funds34.50.3
Loss on business divestitures and impairments, net0.577.70.8
Restructuring charges16.60.120.00.2
Operating income$2,076.218.4%$1,709.116.8%

Our pre-tax income was $1,575.1 million for the year ended December 31, 2021, compared to $1,142.7 million in 2020. Our net income attributable to Republic Services, Inc. was $1,290.4 million, or $4.04 per diluted share for 2021, compared to $967.2 million, or $3.02 per diluted share, for 2020.

During 2021 and 2020, we recorded a number of charges, other expenses and benefits that impacted our pre-tax income, net income attributable to Republic Services, Inc. (net income – Republic) and diluted earnings per share as noted in the following table (in millions, except per share data). Additionally, see our Results of Operations section of this Management's Discussion and Analysis of Financial Condition and Results of Operations for a discussion of other items that impacted our earnings during the years ended December 31, 2021 and 2020. For comparative purposes, prior year amounts have been reclassified to conform to current year presentation.

Year Ended December 31, 2021Year Ended December 31, 2020
Pre-tax IncomeNet Income - RepublicDiluted Earnings per SharePre-tax IncomeNet Income - RepublicDiluted Earnings per Share
As reported$1,575.1$1,290.4$4.04$1,142.7$967.2$3.02
Loss on extinguishment of debt and other related costs99.173.00.23
Restructuring charges16.612.20.0420.014.80.05
Loss on business divestitures and impairments, net0.56.00.0277.765.50.21
Withdrawal costs - multiemployer pension funds34.525.50.08
Bridgeton insurance recovery(10.8)(8.2)(0.03)
Accelerated vesting of compensation expense for CEO transition22.022.00.07
Total adjustments39.140.20.13220.5170.60.54
As adjusted$1,614.2$1,330.6$4.17$1,363.2$1,137.8$3.56

We believe that presenting adjusted pre-tax income, adjusted net income – Republic, and adjusted diluted earnings per share, which are not measures determined in accordance with U.S. GAAP, provide an understanding of operational activities before the financial impact of certain items. We use these measures, and believe investors will find them helpful, in understanding the ongoing performance of our operations separate from items that have a disproportionate impact on our results for a particular period. We have incurred comparable charges and costs in prior periods, and similar types of adjustments can reasonably be expected to be recorded in future periods. Our definitions of adjusted pre-tax income, adjusted net income – Republic, and adjusted diluted earnings per share may not be comparable to similarly titled measures presented by other companies. Further information on each of these adjustments is included below.

Loss on extinguishment of debt and other related costs. During 2020, we incurred a loss on the early extinguishment of debt and other related costs related to the early extinguishment of our $600.0 million 5.250% senior notes due November 2021 (the 2021 Notes) and our $850.0 million 3.550% senior notes due June 2022 (the 2022 Notes), and to redeem $250.0 million of the $550.0 million outstanding 4.750% senior notes due May 2023 (the 2023 Notes). We paid total cash premiums of $99.1 million and

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incurred non-cash charges related to the proportional share of unamortized discounts and deferred issuance costs of $2.8 million. The unamortized proportional share of certain cash flow hedges reclassified to earnings as non-cash interest expense was $1.8 million, and the proportional share of our fair value hedges (related to the 2023 Notes) that were dedesignated and recognized in earnings as a reduction to non-cash interest expense was $4.7 million. During 2021, we did not incur a loss on the early extinguishment of debt.

Restructuring charges. In 2020, we incurred costs related to the redesign of certain back-office software systems, which continued into 2021. In addition, in July 2020, we eliminated certain back-office support positions in response to a decline in the underlying demand for services resulting from the COVID-19 pandemic. In 2021 and 2020, we incurred restructuring charges of $16.6 million and $20.0 million, respectively. We paid $17.2 million and $15.5 million during 2021 and 2020, respectively, related to these restructuring efforts.

In 2022, we expect to incur additional restructuring charges of approximately $20 million primarily related to the redesign of certain of our back-office software systems. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

Loss on business divestitures and impairments, net. During 2021, we recorded a loss of $0.5 million related to business divestitures and asset impairments in certain markets. Additionally, we recognized an increase in our deferred tax provision of $5.5 million due to a change in our U.S. operational footprint as a result of certain acquisitions that closed during the period.

During 2020, we recorded a net loss on business divestitures and impairments of $77.7 million, including $42.6 million resulting from management’s decision to exit certain product offerings and geographic basins in our upstream environmental solutions business.

Withdrawal costs - multiemployer pension funds. During 2020, we recorded charges to earnings of $34.5 million for withdrawal events at multiemployer pension funds to which we contribute. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

Bridgeton insurance recovery. During 2020, we recognized an insurance recovery of $10.8 million, related to our closed Bridgeton Landfill in Missouri, which we recognized as a reduction of remediation expenses in our cost of operations.

Accelerated vesting of compensation expense for CEO transition. In June 2021, Donald W. Slager retired as Chief Executive Officer (CEO) of Republic Services, Inc. During 2021, we recognized a charge of $22.0 million primarily related to the accelerated vesting of his compensation awards that were previously scheduled to vest in 2022 and beyond.

Results of Operations

Revenue

We generate revenue by providing environmental services to our customers, including the collection and processing of recyclable materials, collection, transfer and disposal of non-hazardous solid waste, and other environmental solutions. Our residential, small-container and large-container collection operations in some markets are based on long-term contracts with municipalities. Certain of our municipal contracts have annual price escalation clauses that are tied to changes in an underlying base index such as a consumer price index. We generally provide small-container and large-container collection services to customers under contracts with terms up to three years. Our transfer stations and landfills generate revenue from disposal or tipping fees charged to third parties. Our recycling processing centers generate revenue from tipping fees charged to third parties and the sale of recycled commodities. Our revenue from environmental solutions consists mainly of fees we charge for

disposal of hazardous and non-hazardous solid and liquid material and in-plant services, such as transportation and logistics,

including at our TSDFs. Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

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The following table reflects our revenue by service line for the years ended December 31, 2021 and 2020 (in millions of dollars and as a percentage of revenue):

20212020
Collection:
Residential$2,452.821.7%$2,309.022.7%
Small-container3,417.730.33,106.830.6
Large-container2,378.421.12,148.921.2
Other59.60.551.50.5
Total collection8,308.573.67,616.275.0
Transfer1,490.01,349.4
Less: intercompany(814.4)(745.9)
Transfer, net675.66.0603.55.9
Landfill2,506.72,298.1
Less: intercompany(1,092.8)(1,018.5)
Landfill, net1,413.912.51,279.612.6
Environmental solutions202.51.8127.71.3
Other:
Recycling processing and commodity sales420.53.7297.12.9
Other non-core274.02.4229.52.3
Total other694.56.1526.65.2
Total revenue$11,295.0100.0%$10,153.6100.0%

The following table reflects changes in components of our revenue, as a percentage of total revenue, for the years ended December 31, 2021 and 2020:

20212020
Average yield2.9%2.6%
Fuel recovery fees0.8(0.7)
Total price3.71.9
Volume3.8(3.1)
Change in workdays(0.1)
Recycling processing and commodity sales1.10.3
Environmental solutions(0.1)(0.9)
Total internal growth8.4(1.8)
Acquisitions / divestitures, net2.80.4
Total11.2%(1.4)%
Core price5.0%4.8%

Average yield is defined as revenue growth from the change in average price per unit of service, expressed as a percentage. Core price is defined as price increases to our customers and fees, excluding fuel recovery, net of price decreases to retain customers. We also measure changes in average yield and core price as a percentage of related-business revenue, defined as total revenue excluding recycled commodities, fuel recovery fees and environmental solutions revenue to determine the effectiveness of our pricing strategies. Average yield as a percentage of related-business revenue was 3.1% and 2.8% for 2021 and 2020, respectively. Core price as a percentage of related-business revenue was 5.3% and 5.1% for 2021 and 2020, respectively.

During 2021, we experienced the following changes in our revenue as compared to 2020:

•Average yield increased revenue by 2.9% due to positive pricing changes in all lines of business.

•The fuel recovery fee program, which mitigates our exposure to increases in fuel prices, increased revenue by 0.8%, primarily due to an increase in fuel prices compared to the same period in 2020 and an increase in the total revenue subject to the fuel recovery fees.

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•Volume increased revenue by 3.8% during 2021 as compared to 2020 primarily due to volume growth in our landfill, transfer, and small- and large-container collection lines of business, partially offset by a decline in residential collection volumes. The volume increase in our landfill line of business is primarily attributable to increased solid and special waste event driven volumes. In mid-March 2020, certain customers in these lines of business began adjusting their services levels as a result of the COVID-19 pandemic. This decline in service activity peaked in the first half of April 2020 and sequentially improved thereafter. These increases were partially offset by one less workday as compared to 2020.

•Recycling processing and commodity sales increased revenue by 1.1% primarily due to an increase in overall commodity prices as compared to 2020. The average price for recycled commodities, excluding glass and organics for 2021 was $187 per ton compared to $96 per ton for 2020.

Changing market demand for recycled commodities causes volatility in commodity prices. At current volumes and mix of materials, we believe a $10 per ton change in the price of recycled commodities will change annual revenue and operating income by approximately $22 million and $10 million, respectively.

•During 2021, environmental solutions decreased revenue by 0.1% primarily due to a decrease in rig counts, drilling activity, and the delay of in-plant project work as a result of lower demand for crude oil which began in 2020.

•Acquisitions, net of divestitures, increased revenue by 2.8% due to our continued growth strategy of acquiring privately held environmental services companies that complement our existing business platform.

Cost of Operations

Cost of operations includes labor and related benefits, which consists of salaries and wages, health and welfare benefits, incentive compensation and payroll taxes. It also includes transfer and disposal costs representing tipping fees paid to third party disposal facilities and transfer stations; maintenance and repairs relating to our vehicles, equipment and containers, including related labor and benefit costs; transportation and subcontractor costs, which include costs for independent haulers that transport our material to disposal facilities and costs for local operators who provide environmental services associated with our National Accounts in markets outside our standard operating areas; fuel, which includes the direct cost of fuel used by our vehicles, net of fuel tax credits; disposal fees and taxes, consisting of landfill taxes, host community fees and royalties; landfill operating costs, which includes financial assurance, leachate disposal, remediation charges and other landfill maintenance costs; risk management costs, which include insurance premiums and claims; cost of goods sold, which includes material costs paid to suppliers; and other, which includes expenses such as facility operating costs, equipment rent and gains or losses on sale of assets used in our operations.

The following table summarizes the major components of our cost of operations for the years ended December 31, 2021 and 2020 (in millions of dollars and as a percentage of revenue):

20212020
Labor and related benefits$2,324.420.6%$2,153.421.2%
Transfer and disposal costs865.87.7796.97.9
Maintenance and repairs1,048.89.3969.69.6
Transportation and subcontract costs779.56.9674.16.6
Fuel383.03.4271.72.7
Disposal fees and taxes336.63.0313.53.1
Landfill operating costs258.92.3258.22.5
Risk management261.62.3213.92.1
Other479.14.2460.04.5
Subtotal6,737.759.76,111.360.2
Bridgeton insurance recovery(10.8)(0.1)
Total cost of operations$6,737.759.7%$6,100.560.1%

These cost categories may change from time to time and may not be comparable to similarly titled categories presented by other companies. As such, you should take care when comparing our cost of operations by component to that of other companies and of ours for prior periods.

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Our cost of operations increased for the year ended December 31, 2021 compared to the same period in 2020 as a result of the following:

•Labor and related benefits increased in aggregate dollars due to higher hourly and salaried wages as a result of annual merit increases and an increase in service levels attributable to the economic recovery from the COVID-19 pandemic. This increase was partially offset by one less workday during 2021 as compared to 2020.

•Transfer and disposal costs increased in aggregate dollars as a result of higher collection volumes and an increase in third party disposal rates. During both 2021 and 2020, approximately 68% of the total solid waste volume we collected was disposed at landfill sites that we own or operate (internalization).

•Maintenance and repairs expense increased in aggregate dollars due to an increase in service levels attributable to the economic recovery from the COVID-19 pandemic.

•Transportation and subcontract costs increased primarily due to higher collection and transfer station volumes, acquisition-related activity, and increased subcontract work attributable to an increase in non-core revenues, partially offset by one less workday during 2021 as compared to 2020.

•Fuel costs increased due to an increase in the average diesel fuel cost per gallon. The national average cost per gallon for diesel fuel in 2021 was $3.29 compared to $2.55 for 2020.

At current consumption levels, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel costs by approximately $26 million per year. Offsetting these changes in fuel expense would be changes in our fuel recovery fee charged to our customers. At current participation rates, we believe a twenty-cent per gallon change in the price of diesel fuel would change our fuel recovery fee by approximately $26 million per year.

•Disposal fees and taxes increased in aggregate dollars due to an increase in service levels attributable to the economic recovery from the COVID-19 pandemic.

•Risk management expenses increased primarily due to unfavorable actuarial development in our auto liability claims as well as higher premium costs, partially offset by favorable workers' compensation development in prior year programs.

•During 2020, we recognized an insurance recovery of $10.8 million, related to our closed Bridgeton Landfill in Missouri, which we recognized as a reduction of remediation expenses included in our cost of operations in our consolidated statement of income.

Depreciation, Amortization and Depletion of Property and Equipment

The following table summarizes depreciation, amortization and depletion of property and equipment for the years ended December 31, 2021 and 2020 (in millions of dollars and as a percentage of revenue):

20212020
Depreciation and amortization of property and equipment$734.26.5%$692.96.8%
Landfill depletion and amortization377.53.3323.03.2
Depreciation, amortization and depletion expense$1,111.79.8%$1,015.910.0%

Depreciation and amortization of property and equipment increased primarily due to additional assets acquired with our acquisitions, an increase in the cost of replacement vehicles and container assets, as well as increased capital expenditures on vehicles to support volume growth.

Landfill depletion and amortization increased due to higher landfill disposal volumes, primarily driven by increased solid and special waste volumes, coupled with increased depletion rates. Additionally, we recognized favorable amortization adjustments related to our asset retirement obligations in 2020 that did not recur in 2021.

Amortization of Other Intangible Assets

Expenses for amortization of other intangible assets were $33.3 million, or 0.3% of revenue, for the year ended December 31, 2021, compared to $21.2 million, or 0.2% of revenue for 2020. Our other intangible assets primarily relate to customer relationships and, to a lesser extent, non-compete agreements. Amortization expense increased due to additional assets acquired as a result of our business acquisitions.

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Amortization of Other Assets

Expenses for amortization of other assets were $40.5 million, or 0.4% of revenue, for the year ended December 31, 2021, compared to $38.8 million, or 0.4% of revenue, for 2020. Our other assets primarily relate to the prepayment of fees and capitalized implementation costs associated with cloud-based hosting arrangements.

Accretion Expense

Accretion expense was $82.7 million, or 0.7% of revenue, and $82.9 million, or 0.8% of revenue, for the years ended December 31, 2021 and 2020, respectively. Accretion expense has remained relatively unchanged as our asset retirement obligations remained relatively consistent period over period.

Selling, General and Administrative Expenses

Selling, general and administrative expenses include salaries, health and welfare benefits, and incentive compensation for corporate and field general management, field support functions, sales force, accounting and finance, legal, management information systems, and clerical and administrative departments. Other expenses include rent and office costs, fees for professional services provided by third parties, legal settlements, marketing, investor and community relations services, directors’ and officers’ insurance, general employee relocation, travel, entertainment and bank charges. Restructuring charges are excluded from selling, general and administrative expenses and are discussed separately.

The following table summarizes our selling, general and administrative expenses for the years ended December 31, 2021 and 2020 (in millions of dollars and as a percentage of revenue):

20212020
Salaries and related benefits$844.47.5%$740.57.3%
Provision for doubtful accounts19.90.227.80.3
Other309.52.7284.72.8
Subtotal1,173.810.41,053.010.4
Accelerated vesting of compensation expense for CEO transition22.00.2
Total selling, general and administrative expenses$1,195.810.6%$1,053.010.4%

These cost categories may change from time to time and may not be comparable to similarly titled categories used by other companies. As such, you should take care when comparing our selling, general and administrative expenses by cost component to those of other companies and of ours for prior periods.

The most significant items affecting our selling, general and administrative expenses during 2021 as compared to 2020 are summarized below:

•Salaries and related benefits increased primarily due to higher management incentive expenses as a result of outperforming our annual incentive metrics.

•In 2021, the provision for doubtful accounts decreased as a result of an improved trend in historical collections. Our days sales outstanding changed from 39.2, or 27.5 days net of deferred revenue, as of December 31, 2021 compared to 38.6, or 26.4 days net of deferred revenue, as of December 31, 2020.

•Other selling, general and administrative expenses increased during 2021, primarily due to an increase in recruiting, advertising, and bank fees. Meetings and events expenses also increased during 2021 following a decrease in 2020 as a result of the COVID-19 pandemic. These increases were partially offset by a decrease in professional fees, acquisition deal costs and unfavorable changes in certain legal reserves during 2020, which did not recur in 2021.

•During 2021, we recognized a charge of $22.0 million primarily related to the accelerated vesting of Donald W. Slager's compensation awards that were previously scheduled to vest in 2022 and beyond as a result of his retirement as Chief Executive Officer (CEO) of Republic Services, Inc. in June 2021.

Withdrawal Costs - Multiemployer Pension Funds

During 2020, we recorded charges to earnings of $34.5 million for withdrawal events at multiemployer pension funds to which we contribute. We paid $34.4 million during 2020 relative to these withdrawal events. As we obtain updated information regarding multiemployer pension funds, the factors used in deriving our estimated withdrawal liabilities will be subject to change, which may adversely impact our reserves for withdrawal costs.

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Loss (Gain) on Business Divestitures and Impairments, Net

We strive to have a number one or number two market position in each of the markets we serve, or have a clear path on how we will achieve a leading market position over time. Where we cannot establish a leading market position, or where operations are not generating acceptable returns, we may decide to divest certain assets and reallocate resources to other markets. Business divestitures could result in gains, losses or impairment charges that may be material to our results of operations in a given period.

During 2021, we recorded a net loss on business divestitures and impairments of $0.5 million, which was due to business divestitures in certain markets. During 2020, we recorded a net loss on business divestitures and impairments of $77.7 million, including $42.6 million resulting from management's decision to exit certain product offerings and geographic basins in our upstream environmental solutions business.

Restructuring Charges

In 2020, we incurred costs related to the redesign of certain back-office software systems, which continued into 2021. In addition, in July 2020, we eliminated certain back-office support positions in response to a decline in the underlying demand for services resulting from the COVID-19 pandemic. During 2021 and 2020, we incurred restructuring charges of $16.6 million and $20.0 million, respectively. We paid $17.2 million and $15.5 million during 2021 and 2020, respectively, related to these restructuring efforts.

In 2022, we expect to incur additional restructuring charges of approximately $20 million primarily related to the redesign of certain of our back-office software systems. Substantially all of these restructuring charges will be recorded in our corporate entities and other segment.

Interest Expense

The following table provides the components of interest expense, including accretion of debt discounts and accretion of discounts primarily associated with environmental and risk insurance liabilities assumed in acquisitions (in millions of dollars):

20212020
Interest expense on debt$249.1$300.1
Non-cash interest70.561.7
Less: capitalized interest(5.0)(6.2)
Total interest expense$314.6$355.6

Total interest expense for 2021 decreased compared to 2020 primarily due to lower interest rates on our floating and fixed rate debt. The decrease attributable to our fixed rate debt is primarily due to the issuance of senior notes in 2020 with coupons ranging from 0.875% to 3.050%, the proceeds of which were used to repay outstanding senior notes with coupons ranging from 3.550% to 5.500%.

During 2021 and 2020, cash paid for interest, excluding net swap settlements for our fixed to floating interest rate swaps, was $249.4 million and $325.1 million, respectively.

Loss on Extinguishment of Debt

During 2020, we incurred a $101.9 million loss on the early extinguishment of debt. We paid total cash premiums during the year totaling $99.1 million and incurred non-cash charges related to the proportional share of unamortized discounts and deferred issuance costs of $2.8 million.

Income Taxes

Our provision for income taxes was $282.8 million and $173.1 million for 2021 and 2020, respectively. Our effective income tax rate was 18.0% and 15.2% for 2021 and 2020, respectively. We made income tax payments (net of refunds) of approximately $300 million and $124 million for 2021 and 2020, respectively. Income taxes paid in 2021 and 2020 reflect benefits from tax credits from our continuing investments in solar energy. For 2020, cash taxes paid reflect benefits from 100% bonus depreciation on qualified assets.

During 2021, we acquired non-controlling interests in limited liability companies established to own solar energy assets that qualified for investment tax credits under Section 48 of the Internal Revenue Code. We account for these investments using the equity method of accounting and recognize our share of income or loss and other reductions in the value of our investment in loss from unconsolidated equity method investments within our consolidated statements of income. For further discussion regarding our equity method accounting, see Note 3, Business Acquisitions, Investments and Restructuring Charges. Our 2021 tax provision reflects a benefit of approximately $126 million due to the tax credits related to these investments.

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Our 2020 tax provision was reduced by $11.6 million from excess tax benefits related to stock compensation, approximately $100 million related to the tax credits from our non-controlling interest in limited liability companies established to own solar energy assets, $17.2 million for adjustments to our valuation allowance due to the realizability of certain state loss carryforwards, and $8.2 million due to the realization of additional federal and state benefits as well as adjustments to deferred taxes due to the completion of our 2019 tax returns.

We have deferred tax assets related to state net operating loss carryforwards with an estimated tax effect of approximately $87 million available as of December 31, 2021. These state net operating loss carryforwards expire at various times between 2022 and 2041. We believe that it is more likely than not that the benefit from some of our state net operating loss carryforwards will not be realized due to limitations on these loss carryforwards in certain states. In recognition of this risk, as of December 31, 2021, we have provided a valuation allowance of approximately $43 million.

Reportable Segments

Our senior management evaluates the financial performance of our operations through three operating segments. Group 1 primarily consists of geographic areas located in the western United States, and Group 2 primarily consists of geographic areas located in the southeastern and mid-western United States, and the eastern seaboard of the United States. Our Environmental Solutions operating segment, which provides environmental solutions for daily operations of industrial, petrochemical and refining facilities, is aggregated with Corporate entities and other as it only represents approximately 2% of our consolidated revenue. Each operating segment provides integrated environmental services, including collection, transfer, recycling, and disposal.

Summarized financial information concerning our reportable segments for the years ended December 31, 2021 and 2020 is shown in the following table (in millions of dollars and as a percentage of revenue in the case of operating margin):

Net RevenueDepreciation, Amortization, Depletion and Accretion Before Adjustments for Asset Retirement ObligationsAdjustments to Amortization Expense for Asset Retirement ObligationsDepreciation, Amortization, Depletion and AccretionLoss on Business Divestitures and Impairments, NetOperating Income (Loss)Operating Margin
2021:
Group 1$5,558.9$555.1$(7.0)$548.1$$1,495.726.9%
Group 25,333.6543.8(2.5)541.31,135.721.3%
Corporate entities and other402.5162.416.4178.80.5(555.2)
Total$11,295.0$1,261.3$6.9$1,268.2$0.5$2,076.218.4%
2020:
Group 1$5,057.5$522.1$(20.0)$502.1$$1,343.326.6%
Group 24,791.9506.5(17.6)488.9966.820.2%
Corporate entities and other304.2142.725.1167.877.7(601.0)
Total$10,153.6$1,171.3$(12.5)$1,158.8$77.7$1,709.116.8%

Financial information for the year ended December 31, 2020 reflects the transfer of our Environmental Solutions operating segment from Group 2 to Corporate entities and other, to align with how our chief operating decision maker began evaluating our operations in December 2020.

Corporate entities and other include legal, tax, treasury, information technology, risk management, human resources, closed landfills, other administrative functions and environmental solutions. National Accounts revenue included in corporate entities represents the portion of revenue generated from nationwide and regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations.

Significant changes in the revenue and operating margins of our reportable segments for 2021 compared to 2020 are discussed below.

Group 1

Revenue for 2021 increased 9.9% from 2020 due to an increase in both average yield and volume in all lines of business.

Operating income in Group 1 increased from $1,343.3 million for 2020, or a 26.6% operating margin, to $1,495.7 million for 2021, or a 26.9% operating margin. Operating income margin during 2021 was favorably impacted by the increase in revenue

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attributable to economic recovery coupled with the effective management of certain operating costs. This benefit was partially offset by an increase in fuel costs.

Group 2

Revenue for 2021 increased 11.3% from 2020 due to an increase in average yield in all lines of business. Additionally, volume increased in our landfill, transfer station, and small- and large-container collection lines of business, partially offset by volume declines in our residential line of business.

Operating income in Group 2 increased from $966.8 million for 2020, or a 20.2% operating margin, to $1,135.7 million for 2021, or a 21.3% operating margin. Operating income margin for 2021 was favorably impacted by the increase in revenue attributable to economic recovery coupled with the effective management of certain operating costs. This benefit was partially offset by an increase in fuel costs.

Corporate Entities and Other

The Corporate entities and other operating loss decreased from $601.0 million for 2020 to $555.2 million for 2021. During 2021, we recorded a net loss on business divestitures and impairments of $0.5 million. During 2020, we recorded a net loss on business divestitures and impairments of $77.7 million, including $42.6 million resulting from management’s decision to exit certain product offerings and geographic basins in our upstream environmental solutions business.

Landfill and Environmental Matters

Our landfill costs include daily operating expenses, costs of capital for cell development, costs for final capping, closure and post-closure, and the legal and administrative costs of ongoing environmental compliance. Daily operating expenses include leachate treatment, transportation and disposal costs, methane gas and groundwater monitoring and system maintenance costs, interim cap maintenance costs, and costs associated with applying daily cover materials. We expense all indirect landfill development costs as they are incurred. We use life cycle accounting and the units-of-consumption method to recognize certain direct landfill costs related to landfill development. In life cycle accounting, certain direct costs are capitalized and charged to depletion expense based on the consumption of cubic yards of available airspace. These costs include all costs to acquire and construct a site, including excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection and monitoring systems, installation of groundwater monitoring wells, and other costs associated with acquiring and developing the site. Obligations associated with final capping, closure and post-closure are capitalized and amortized on a units-of-consumption basis as airspace is consumed.

Cost and airspace estimates are developed at least annually by engineers. Our operating and accounting personnel use these estimates to adjust the rates we use to expense capitalized costs. Changes in these estimates primarily relate to changes in cost estimates, available airspace, inflation and applicable regulations. Changes in available airspace include changes in engineering estimates, changes in design and changes due to the addition of airspace lying in expansion areas that we believe have a probable likelihood of being permitted. Changes in engineering estimates typically include modifications to the available disposal capacity of a landfill based on a refinement of the capacity calculations resulting from updated information.

Available Airspace

As of December 31, 2021 and 2020, we owned or operated 198 and 186 active solid waste landfills, respectively, with total available disposal capacity estimated to be 5.0 billion in-place cubic yards in both years. For these landfills, the following table reflects changes in capacity and remaining capacity, as measured in cubic yards of airspace:

Balance as of December 31, 2020New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2021
Cubic yards (in millions):
Permitted airspace4,792.561.437.8(79.3)14.34,826.7
Probable expansion airspace196.420.5(30.9)186.0
Total cubic yards (in millions)4,988.920.561.46.9(79.3)14.35,012.7
Number of sites:
Permitted airspace18613(1)198
Probable expansion airspace112(2)11

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Balance as of December 31, 2019New Expansions UndertakenLandfills Acquired, Net of DivestituresPermits Granted / New Sites, Net of ClosuresAirspace ConsumedChanges in Engineering EstimatesBalance as of December 31, 2020
Cubic yards (in millions):
Permitted airspace4,673.0(5.1)205.8(76.1)(5.1)4,792.5
Probable expansion airspace321.732.9(158.2)196.4
Total cubic yards (in millions)4,994.732.9(5.1)47.6(76.1)(5.1)4,988.9
Number of sites:
Permitted airspace189(2)(1)186
Probable expansion airspace122(3)11

Total available disposal capacity represents the sum of estimated permitted airspace plus an estimate of probable expansion airspace. Engineers develop these estimates at least annually using information provided by annual aerial surveys. Before airspace included in an expansion area is determined to be probable expansion airspace and, therefore, included in our calculation of total available disposal capacity, it must meet all of our expansion criteria. See Note 2, Summary of Significant Accounting Policies, and Note 8, Landfill and Environmental Costs, of the notes to our consolidated financial statements in Item 8 of this Annual Report on Form 10-K for further information. Also see our Critical Accounting Judgments and Estimates section of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

As of December 31, 2021, 11 of our landfills met all of our criteria for including their probable expansion airspace in their total available disposal capacity. At projected annual volumes, these 11 landfills have an estimated remaining average site life of 33 years, including probable expansion airspace. The average estimated remaining life of all of our landfills is 59 years. We have other expansion opportunities that are not included in our total available airspace because they do not meet all of our criteria for treatment as probable expansion airspace.

The following table reflects the estimated operating lives of our active landfill sites based on available and probable disposal capacity using current annual volumes as of December 31, 2021:

Number of Sites without Probable Expansion AirspaceNumber of Sites with Probable Expansion AirspaceTotal SitesPercent of Total
0 to 5 years212110.6%
6 to 10 years19199.6
11 to 20 years2532814.1
21 to 40 years5535829.3
41+ years6757236.4
Total18711198100.0%

Final Capping, Closure and Post-Closure Costs

As of December 31, 2021, accrued final capping, closure and post-closure costs were $1,507.3 million, of which $68.4 million were current and $1,438.9 million were long-term as reflected in our consolidated balance sheets in accrued landfill and environmental costs included in Part II, Item 8 of this Annual Report on Form 10-K.

Remediation and Other Charges for Landfill Matters

It is reasonably possible that we will need to adjust our accrued landfill and environmental liabilities to reflect the effects of new or additional information, to the extent that such information impacts the costs, timing or duration of the required actions. Future changes in our estimates of the costs, timing or duration of the required actions could have a material adverse effect on our consolidated financial position, results of operations and cash flows.

In 2020, we recognized an insurance recovery of $10.8 million related to our closed Bridgeton Landfill in Missouri as a reduction of remediation expenses included in our cost of operations.

For a description of our significant remediation matters, see Note 8, Landfill and Environmental Costs, of the notes to our consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

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Investment in Landfills

As of December 31, 2021, we expect to spend an estimated additional $9.6 billion on existing landfills, primarily related to cell construction and environmental structures, over their remaining lives. Our total expected investment, excluding non-depletable land, estimated to be $13.8 billion, or $2.75 per cubic yard, is used in determining our depletion and amortization expense based on airspace consumed using the units-of-consumption method.

The following table reflects our future expected investment as of December 31, 2021 (in millions):

Balance as of December 31, 2021Expected Future InvestmentTotal Expected Investment
Non-depletable landfill land$197.7$$197.7
Landfill development costs8,539.69,631.518,171.1
Construction-in-progress - landfill279.3279.3
Accumulated depletion and amortization(4,625.6)(4,625.6)
Net investment in landfill land and development costs$4,391.0$9,631.5$14,022.5

The following table reflects our net investment in our landfills, excluding non-depletable land, and our depletion, amortization and accretion expense for the years ended December 31, 2021 and 2020:

20212020
Number of landfills owned or operated198186
Net investment, excluding non-depletable land (in millions)$4,193.3$4,046.0
Total estimated available disposal capacity (in millions of cubic yards)5,012.74,988.9
Net investment per cubic yard$0.84$0.81
Landfill depletion and amortization expense (in millions)$377.5$323.0
Accretion expense (in millions)82.782.9
460.2405.9
Airspace consumed (in millions of cubic yards)79.376.1
Depletion, amortization and accretion expense per cubic yard of airspace consumed$5.80$5.33

During 2021 and 2020, our average compaction rate was approximately 2,000 pounds per cubic yard based primarily on a three-year historical moving average.

Property and Equipment

The following tables reflect the activity in our property and equipment accounts for the years ended December 31, 2021 and 2020 (in millions of dollars):

Gross Property and Equipment
Balance as of December 31, 2020Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2021
Land$633.4$32.7$(3.9)$16.6$$$16.1$694.9
Landfill development costs7,991.76.565.546.758.9370.38,539.6
Vehicles and equipment8,119.0651.0(385.2)109.382.88,576.9
Buildings and improvements1,402.524.8(6.9)20.90.566.61,508.4
Construction-in-progress - landfill303.8358.5(383.0)279.3
Construction-in-progress - other107.4240.25.3(170.0)182.9
Total$18,557.8$1,313.7$(396.0)$217.6$47.2$58.9$(17.2)$19,782.0

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Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2020Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2021
Landfill development costs$(4,249.5)$(369.4)$$0.5$(7.2)$$(4,625.6)
Vehicles and equipment(4,953.4)(665.4)376.310.9(5,231.6)
Buildings and improvements(628.7)(68.9)5.00.3(0.4)(692.7)
Total$(9,831.6)$(1,103.7)$381.3$0.8$(7.2)$10.5$(10,549.9)
Gross Property and Equipment
Balance as of December 31, 2019Capital AdditionsRetirementsAcquisitions, Net of DivestituresNon-Cash Additions for Asset Retirement ObligationsAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2020
Land$618.8$9.9$(8.1)$10.4$$$2.4$633.4
Landfill development costs7,474.72.6(15.5)62.340.6(45.5)472.57,991.7
Vehicles and equipment7,766.0654.4(336.3)3.931.08,119.0
Buildings and improvements1,342.64.4(6.1)24.01.735.91,402.5
Construction-in-progress - landfill366.8406.9(3.6)(466.3)303.8
Construction-in-progress - other87.7164.1(144.4)107.4
Total$17,656.6$1,242.3$(366.0)$97.0$42.3$(45.5)$(68.9)$18,557.8
Accumulated Depreciation, Amortization and Depletion
Balance as of December 31, 2019Additions Charged to ExpenseRetirementsAcquisitions, Net of DivestituresAdjustments for Asset Retirement ObligationsImpairments, Transfers and Other AdjustmentsBalance as of December 31, 2020
Landfill development costs$(3,968.6)$(335.6)$15.5$26.2$13$$(4,249.5)
Vehicles and equipment(4,728.2)(628.7)322.744.436.4(4,953.4)
Buildings and improvements(576.3)(65.5)4.76.81.6(628.7)
Total$(9,273.1)$(1,029.8)$342.9$77.4$13$38.0$(9,831.6)

Liquidity and Capital Resources

Cash and Cash Equivalents

The following is a summary of our cash and cash equivalents and restricted cash and marketable securities balances as of December 31:

20212020
Cash and cash equivalents$29.0$38.2
Restricted cash and marketable securities139.0149.1
Less: restricted marketable securities(62.4)(73.1)
Cash, cash equivalents, restricted cash and restricted cash equivalents$105.6$114.2

Our restricted cash and marketable securities include, among other things, restricted cash related to proceeds from the issuance of tax-exempt bonds that will be used to fund qualifying landfill-related expenditures in the Commonwealth of Pennsylvania, restricted cash and marketable securities pledged to regulatory agencies and governmental entities as financial guarantees of our performance under certain collection, landfill and transfer station contracts and permits, and relating to our final capping, closure and post-closure obligations at our landfills, and restricted cash and marketable securities related to our insurance obligations.

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The following table summarizes our restricted cash and marketable securities as of December 31:

20212020
Financing proceeds$12.4$
Capping, closure and post-closure obligations42.431.5
Insurance84.2117.6
Total restricted cash and marketable securities$139.0$149.1

Material Cash Requirements and Intended Uses of Cash

We expect existing cash, cash equivalents, restricted cash and marketable securities, cash flows from operations and financing activities to continue to be sufficient to fund our operating activities and cash commitments for investing and financing activities for at least the next 12 months and thereafter for the foreseeable future. Our known current- and long-term uses of cash include, among other possible demands: (1) capital expenditures and leases, (2) acquisitions, (3) dividend payments, (4) share repurchases, (5) repayments to service debt and other long-term obligations, and (6) payments for asset retirement obligations and environmental liabilities.

Capital Expenditures and Leases

We make investments in property and equipment primarily to allow for growth of our service offerings. These investments are largely concentrated in vehicles and equipment and costs to construct our landfills. We expect to spend approximately $1.3 billion on capital expenditures in 2022.

We lease property and equipment in the ordinary course of business under various lease agreements. The most significant lease obligations are for real property and equipment specific to our industry, including property operated as a landfill or transfer station and operating equipment. As of December 31, 2021, the amount of total future lease payments under operating and finance leases was $315.4 million and $433.6 million, respectively. For additional detail regarding our lease obligations, see Note 10, Leases, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Acquisitions

Our acquisition growth strategy focuses primarily on acquiring privately held recycling and solid waste companies and environmental solutions businesses that complement our existing business platform. We continue to invest in value-enhancing acquisitions in existing markets. In 2022, we expect to invest at least $500 million in acquisitions.

Dividend Payments

In October 2021, our Board of Directors approved a quarterly dividend of $0.46 per share. Aggregate cash dividends declared were $563.0 million for the year ended December 31, 2021. As of December 31, 2021, we recorded a quarterly dividend payable of $145.9 million to shareholders of record at the close of business on January 3, 2022, which was paid on January 14, 2022.

Share Repurchases

In October 2020, our Board of Directors approved a $2.0 billion share repurchase authorization effective starting January 1, 2021 and extending through December 31, 2023. Share repurchases under the current program may be made through open market purchases or privately negotiated transactions in accordance with applicable federal securities laws. While the Board of Directors has approved the program, the timing of any purchases, the prices and the number of shares of common stock to be purchased will be determined by our management, at its discretion, and will depend upon market conditions and other factors. The share repurchase program may be extended, suspended or discontinued at any time. As of December 31, 2021, the remaining authorized purchase capacity under our October 2020 repurchase program was $1.7 billion.

Debt and other long-term obligations

Debt repayments may include purchases of our outstanding indebtedness in the secondary market or otherwise. We believe that our excess cash, cash from operating activities and our availability to draw on our credit facilities provide us with sufficient financial resources to meet our anticipated capital requirements and maturing obligations as they come due.

We may choose to voluntarily retire certain portions of our outstanding debt before their maturity dates using cash from operations or additional borrowings. We may also explore opportunities in the capital markets to fund redemptions should market conditions be favorable. Early extinguishment of debt will result in an impairment charge in the period in which the debt is repaid. The loss on early extinguishment of debt relates to premiums paid to effectuate the repurchase and the relative portion of unamortized note discounts and debt issue costs.

As of December 31, 2021, the total principal value of our debt was $9.7 billion of which $8.2 million is due in 2022.

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We have several agreements that require us to dispose of a minimum number of tons at third-party disposal facilities. Under these put-or-pay agreements, we must pay for agreed-upon minimum volumes regardless of the actual number of tons placed at the facilities.

Our unconditional purchase commitments have varying expiration dates, with some extending through the remaining life of the respective landfill. Future minimum payments under unconditional purchase commitments, consisting primarily of (1) disposal related agreements, which include fixed or minimum royalty payments, host agreements, and take-or-pay and put-or-pay agreements, and (2) other obligations including committed capital expenditures and consulting service agreements. As of December 31, 2021 such purchase commitments, which do not qualify for recognition on our Consolidated Balance Sheets, amount to $772.3 million, of which $142.6 million is short-term.

For additional detail regarding our debt and known contractual and other obligation, see Note 9, Debt, and Note 19, Commitments and Contingencies, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Asset Retirement Obligations and Environmental Liabilities

We have future obligations for final capping, closure and post-closure costs with respect to the landfills we own or operate as set forth in applicable landfill permits. As of December 31, 2021, our future obligations for final capping, closure and post-closure costs totaled $1.5 billion of which $68.4 million was short-term.

Additionally, we are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. As of December 31, 2021, our environmental liabilities totaled $454.9 million of which $56.1 million was short-term.

For additional detail regarding our asset retirement obligations and environmental liabilities, see Note 8, Landfill and Environmental Costs, of the notes to our audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Summary of Cash Flow Activity

The major components of changes in cash flows for 2021 and 2020 are discussed in the following paragraphs. The following table summarizes our cash flow from operating activities, investing activities and financing activities for the years ended December 31, 2021 and 2020 (in millions of dollars):

20212020
Net cash provided by operating activities$2,786.7$2,471.6
Net cash used in investing activities$(2,466.1)$(1,922.8)
Net cash used in financing activities$(329.2)$(612.0)

Cash Flows Provided by Operating Activities

The most significant items affecting the comparison of our operating cash flows for 2021 and 2020 are summarized below.

Changes in assets and liabilities, net of effects from business acquisitions and divestitures, decreased our cash flow from operations by $94.0 million in 2021, compared to a decrease of $129.9 million in 2020, primarily as a result of the following:

•Our accounts receivable, exclusive of the change in allowance for doubtful accounts and customer credits, increased $135.4 million during 2021, compared to a $13.8 million decrease in 2020. As of December 31, 2021, our days sales outstanding were 39.2, or 27.5 days net of deferred revenue, as of December 31, 2021 compared to 38.6, or 26.4 days net of deferred revenue, as of December 31, 2020.

•Our prepaid expenses and other assets increased $57.0 million in 2021 compared to a decrease of $6.5 million in 2020, primarily due to additional SaaS implementation costs incurred related to the redesign of certain back-office software systems in 2021. The decrease in 2020 was primarily attributable to the receipt of the Bridgeton landfill settlement in the first quarter of 2020, and an increase in alternative fuel tax credit receipts during 2020 compared to 2019, partially offset by an increase of prepaid taxes due to the timing of our estimated tax payments. We made income tax payments (net of refunds) of approximately $300 million and $124 million for 2021 and 2020, respectively. Income taxes paid in 2021 and 2020 reflected benefits from tax credits from our continuing investments in solar energy. In 2020, cash taxes paid also reflected a benefit from 100% bonus depreciation on qualified assets.

•Our accounts payable increased $113.8 million during 2021 compared to a decrease of $46.7 million during 2020, due to the timing of payments.

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•Cash paid for capping, closure and post-closure obligations was $1.0 million higher during 2021 compared to 2020. The increase in cash paid for capping, closure and post-closure obligations is primarily due to the timing of capping and post-closure payments at certain of our landfill sites.

•Cash paid for remediation obligations was $6.4 million lower during 2021 compared to 2020, primarily due to $18.9 million in payments related to management and monitoring of the remediation area of our closed Bridgeton Landfill in Missouri during 2021 as compared to $25.6 million of payments during 2020.

In addition, cash paid for interest was $249.4 million and $325.1 million, excluding net swap settlements for our fixed to floating interest rate swaps, for 2021 and 2020, respectively.

We use cash flows from operations to fund capital expenditures, acquisitions, dividend payments, share repurchases and debt repayments.

Cash Flows Used in Investing Activities

The most significant items affecting the comparison of our cash flows used in investing activities for 2021 and 2020 are summarized below:

•Capital expenditures during 2021 were $1,316.3 million as compared to $1,194.6 million for 2020.

•Proceeds from sales of property and equipment during 2021 were $19.5 million as compared to $30.1 million for 2020.

•During 2021 and 2020, we used $1,221.7 million and $769.5 million, respectively, for acquisitions and investments, net of cash acquired. During 2021 and 2020, we received $46.3 million and $32.9 million from business divestitures, respectively.

We intend to finance capital expenditures and acquisitions through cash on hand, restricted cash held for capital expenditures, cash flows from operations, our revolving credit facilities, and tax-exempt bonds and other financings.

On February 8, 2022, we entered into a definitive agreement to acquire all outstanding shares of US Ecology, Inc. (US Ecology) in a transaction valued at approximately $2.2 billion, including debt. US Ecology is a leading provider of environmental solutions offering treatment, recycling and disposal of hazardous, non-hazardous and specialty waste. We intend to finance the transaction using existing and new sources of debt.

Cash Flows Used in Financing Activities

The most significant items affecting the comparison of our cash flows used in financing activities for 2021 and 2020 are summarized below:

•During 2021, we issued $700.0 million of senior notes for cash proceeds, net of discounts and fees, of $692.3 million. During 2020, we issued $2,750.0 million of senior notes for cash proceeds, net of discounts and fees, of $2,716.1 million. Net payments of notes payable and long-term debt were $150.2 million during 2021, compared to net payments of $2,595.9 in 2020. For a more detailed discussion, see the Financial Condition section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations.

•During 2020, we paid $99.1 million in cash premiums on the redemption of senior notes.

•During 2021, we repurchased 2.2 million shares of our stock for $252.2 million. During 2020, we repurchased 1.2 million shares of our stock for $98.8 million.

•In July 2021, our Board of Directors approved an increase in our quarterly dividend to $0.46 per share. Dividends paid were $552.6 million and $522.5 million in 2021 and 2020, respectively.

•During 2021, we paid $32.0 million related to the purchase of the remaining equity interest in a previously held non-controlling interest.

•During 2021 and 2020, cash paid for purchase price holdback releases and contingent purchase price related to acquisitions was $21.3 million and $15.5 million, respectively.

Financial Condition

Debt Obligations

As of December 31, 2021, we had $8.2 million of principal debt maturing within the next 12 months, which includes certain finance lease obligations. All of our tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agent is unable to remarket our bonds, the remarketing agent can put the bonds to us.

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In the event of a failed remarketing, we currently have availability under our $3.0 billion unsecured revolving credit facility to fund these bonds until they are remarketed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of December 31, 2021.

An extended period of economic disruption associated with the COVID-19 pandemic could further disrupt the global supply chain, negatively impact demand for our services, and disrupt financial markets. These effects could materially and adversely affect our business and financial condition, including our access to sources of liquidity. We will continue to monitor the evolving COVID-19 pandemic along with the effect on our business and access to capital markets. Refer to Part I, Item 1A - Risk Factors of this Annual Report on Form 10-K for a discussion of certain risk factors related to this pandemic.

For further discussion of the components of our overall debt, see Note 9, Debt, of the notes to our consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Credit Facilities

The Credit Facility

In August 2021, we entered into a $3.0 billion unsecured revolving credit facility (the Credit Facility), which replaces the prior $2.25 billion unsecured revolving credit facility which would have matured in June 2023 (the Replaced Credit Facility). Borrowings under the Credit Facility mature in August 2026. As permitted by the Credit Facility, we have the right to request two one-year extensions of the maturity date but none of the lenders are committed to participate in such extension. The Credit Facility also includes a feature that allows us to increase availability, at our option, by an aggregate amount of up to $1.0 billion through increased commitments from existing lenders or the addition of new lenders.

At our option, borrowings under the Credit Facility bear interest at a Base Rate, a daily floating London Interbank Offered Rate (LIBOR), or a Eurodollar Rate, plus an applicable margin of 0.910% based on our Debt Ratings (all as defined in the Credit Facility agreement). On the earliest of (i) the date that all available tenors of U.S. dollar LIBOR have permanently or indefinitely ceased to be provided or have been announced to be no longer representative, (ii) June 30, 2023 or (iii) the effective date of an election to opt into a secured overnight financing rate (SOFR), the LIBOR rate will be replaced by a forward-looking term rate based on SOFR or a daily rate based on SOFR published on such date.

The Credit Facility is subject to facility fees based on applicable rates defined in the Credit Facility agreement and the aggregate commitment, regardless of usage. Availability under our Credit Facility and Replaced Credit Facility totaled $2,633.8 million and $1,671.8 million as of December 31, 2021 and 2020, respectively. The Credit Facility can be used for working capital, capital expenditures, acquisitions, letters of credit and other general corporate purposes. The Credit Facility agreement requires us to comply with financial and other covenants. We may pay dividends and repurchase common stock if we are in compliance with these covenants.

As of December 31, 2021 and 2020, we had $24.3 million and $186.0 million of borrowings outstanding under our Credit Facility and Replaced Credit Facility, respectively. We had $341.9 million and $376.5 million of letters of credit outstanding under our Credit Facility and Replaced Credit Facility as of December 31, 2021 and 2020, respectively.

Uncommitted Credit Facility

In January 2022, we entered into a $200.0 million unsecured uncommitted revolving credit facility (the Uncommitted Credit Facility), which replaces the prior $135.0 million uncommitted credit facility (the Replaced Uncommitted Credit Facility). The Uncommitted Credit Facility bears interest at an annual percentage rate to be agreed upon by both parties, rather than a LIBOR or Cost of Funds rate used in the Replaced Uncommitted Credit Facility (as defined in the Replaced Uncommitted Credit Facility agreement). Borrowings under the Uncommitted Credit Facility can be used for working capital, letters of credit, and other general corporate purposes. The agreement governing our Uncommitted Credit Facility requires us to comply with certain covenants. The Uncommitted Credit Facility may be terminated by either party at any time. As of December 31, 2021 and 2020, we had no borrowings outstanding under our Replaced Uncommitted Credit Facility.

Financial and Other Covenants

The Credit Facility requires us to comply with financial and other covenants. To the extent we are not in compliance with these covenants, we cannot pay dividends or repurchase common stock. Compliance with covenants also is a condition for any incremental borrowings under the Credit Facility, and failure to meet these covenants would enable the lenders to require repayment of any outstanding loans (which would adversely affect our liquidity). The Credit Facility provides that our total debt to EBITDA ratio may not exceed 3.75 to 1.00 as of the last day of any fiscal quarter. In the case of an "elevated ratio period", which may be elected by us if one or more acquisitions during a fiscal quarter involve aggregate consideration in excess of $200.0 million (the Trigger Quarter), the total debt to EBITDA ratio may not exceed 4.25 to 1.00 during the Trigger Quarter and for the three fiscal quarters thereafter. The Credit Facility also provides that there may not be more than two elevated ratio periods during the respective term of the Credit Facility agreement. As of December 31, 2021, our total debt to

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EBITDA ratio was 2.89 compared to the 3.75 maximum allowed by the covenants. As of December 31, 2021, we were in compliance with the covenants under the Credit Facility, and we expect to be in compliance throughout 2022.

EBITDA, which is a non-GAAP measure, is calculated as defined in our Credit Facility agreement. In this context, EBITDA is used solely to provide information regarding the extent to which we are in compliance with debt covenants and is not comparable to EBITDA used by other companies or used by us for other purposes.

Failure to comply with the financial and other covenants under the Credit Facility, as well as the occurrence of certain material adverse events, would constitute defaults and would allow the lenders under the Credit Facility to accelerate the maturity of all indebtedness under the Credit Facility agreement. This could have an adverse effect on the availability of financial assurances. In addition, maturity acceleration on the Credit Facility constitutes an event of default under our other debt instruments, including our senior notes, and, therefore, our senior notes would also be subject to acceleration of maturity. If such acceleration were to occur, we would not have sufficient liquidity available to repay the indebtedness. We would likely have to seek an amendment under the Credit Facility agreement for relief from the financial covenant or repay the debt with proceeds from the issuance of new debt or equity, or asset sales, if necessary. We may be unable to amend the Credit Facility agreement or raise sufficient capital to repay such obligations in the event the maturity is accelerated.

Senior Notes and Debentures

In November 2021, we issued $700.0 million of 2.375% senior notes due 2033 (the 2.375% Notes). We used the net proceeds for general corporate purposes, including repayment of amounts outstanding under our unsecured and uncommitted credit facilities. Prior to such use, Republic may have temporarily invested the net proceeds in marketable securities and short-term investments.

During the second quarter of 2021, we paid the entire $35.3 million principal balance of our 9.250% debentures which matured in May 2021.

Our senior notes are general senior unsecured obligations. Interest is payable semi-annually.

Derivative Instruments and Hedging Relationships

Our ability to obtain financing through the capital markets is a key component of our financial strategy. Historically, we have managed risk associated with executing this strategy, particularly as it relates to fluctuations in interest rates, by using a combination of fixed and floating rate debt. From time to time, we also have entered into interest rate swap and lock agreements to manage risk associated with interest rates, either to effectively convert specific fixed rate debt to a floating rate (fair value hedges), or to lock interest rates in anticipation of future debt issuances (cash flow hedges).

For a description of our derivative contracts and hedge accounting, see Note 9, Debt, to our audited consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Tax-Exempt Financings

As of December 31, 2021, we had $1,181.5 million of certain variable rate tax-exempt financings outstanding with maturities ranging from 2023 to 2051. As of December 31, 2020, we had $1,104.7 million of certain variable rate tax-exempt financings outstanding with maturities ranging from 2021 to 2050. During the year ended December 31, 2021 and 2020, we issued $205.0 million and $60.0 million, respectively, of new tax-exempt financings.

In the fourth quarter of 2021, the Pennsylvania Economic Development Financing Authority issued, for our benefit, $30.0 million of Solid Waste Disposal Revenue Bonds. The proceeds from the issuance, after deferred issuance costs, will be used to fund qualifying landfill-related expenditures in the Commonwealth of Pennsylvania, of which $17.2 million has been incurred and reimbursed to us. As of December 31, 2021, we had $139.0 million of restricted cash and marketable securities, of which $12.4 million represented proceeds from the issuance of the tax-exempt bonds.

Finance Leases

We had finance lease liabilities of $249.4 million and $206.5 million as of December 31, 2021 and 2020, respectively, with maturities ranging from 2022 to 2063 and 2021 to 2063, respectively.

Financial Assurance

We must provide financial assurance to governmental agencies and a variety of other entities under applicable environmental regulations relating to our landfill operations for capping, closure and post-closure costs, and related to our performance under certain collection, landfill and transfer station contracts. We satisfy these financial assurance requirements by providing surety bonds, letters of credit, or insurance policies (Financial Assurance Instruments), or trust deposits, which are included in restricted cash and marketable securities and other assets in our consolidated balance sheets. The amount of the financial assurance requirements for capping, closure and post-closure costs is determined by applicable state environmental regulations.

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The financial assurance requirements for capping, closure and post-closure costs may be associated with a portion of the landfill or the entire landfill. Generally, states require a third-party engineering specialist to determine the estimated capping, closure and post-closure costs that are used to determine the required amount of financial assurance for a landfill. The amount of financial assurance required can, and generally will, differ from the obligation determined and recorded under U.S. GAAP. The amount of the financial assurance requirements related to contract performance varies by contract. Additionally, we must provide financial assurance for our insurance program and collateral for certain performance obligations. We do not expect a material increase in financial assurance requirements during 2022, although the mix of Financial Assurance Instruments may change.

These Financial Assurance Instruments are issued in the normal course of business and are not classified as indebtedness. Because we currently have no liability for the Financial Assurance Instruments, they are not reflected in our consolidated balance sheets; however, we record capping, closure and post-closure liabilities and insurance liabilities as they are incurred.

Critical Accounting Judgments and Estimates

Our consolidated financial statements have been prepared in accordance with U.S. GAAP and necessarily include certain estimates and judgments made by management. The following is a list of accounting policies that we believe are the most critical in understanding our consolidated financial position, results of operations and cash flows and that may require management to make subjective or complex judgments about matters that are inherently uncertain. Our critical accounting estimates are those estimates that involve a significant level of uncertainty at the time the estimate was made, and changes in them have had or are reasonably likely to have a material effect on our financial condition or results of operations. Accordingly, actual results could differ materially from our estimates. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Such critical accounting policies, estimates and judgments are applicable to all of our operating segments.

We have noted examples of the estimates that are subject to uncertainty in the accounting for these areas below.

Landfill Accounting

Landfill operating costs are treated as period expenses and are not discussed further in this section.

Our landfill assets and liabilities fall into the following two categories, each of which requires accounting judgments and estimates:

•Landfill development costs that are capitalized as an asset.

•Landfill retirement obligations relating to our capping, closure and post-closure liabilities that result in a corresponding landfill retirement asset.

We use life-cycle accounting and the units-of-consumption method to recognize landfill development costs over the life of the site. In life-cycle accounting, all current and future capitalized costs to acquire and construct a site are calculated, and charged to expense based on the consumption of cubic yards of available airspace. Obligations associated with final capping, closure and post-closure are also capitalized, and amortized on a units-of-consumption basis as airspace is consumed. Cost and airspace estimates are developed at least annually by engineers.

Landfill Development Costs

As of December 31, 2021 and 2020, we had net landfill development costs of $3,914.0 million and $3,742.2 million, respectively. Changes in these estimates may be sensitive to changes in cost estimates, inflation and applicable regulations.

Site permits. To develop, construct and operate a landfill, we must obtain permits from various regulatory agencies at the local, state and federal levels. The permitting process requires an initial site study to determine whether the location is feasible for landfill operations. The initial studies are reviewed by our environmental management group and then submitted to the regulatory agencies for approval. During the development stage we capitalize certain costs that we incur after site selection but before the receipt of all required permits if we believe that it is probable that the site will be permitted.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements may cause changes to the landfill site permitting process. These changes could make it more difficult and costly to obtain and maintain a landfill permit.

•Studies performed could be inaccurate, which could result in the denial or revocation of a permit and changes to accounting assumptions. Conditions could exist that were not identified in the study, which may make the location not feasible for a landfill and could result in the denial of a permit. Denial or revocation of a permit could impair the recorded value of the landfill asset.

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•Actions by neighboring parties, private citizen groups or others to oppose our efforts to obtain, maintain or expand permits could result in denial, revocation or suspension of a permit, which could adversely impact the economic viability of the landfill and could impair the recorded value of the landfill. As a result of opposition to our obtaining a permit, improved technical information as a project progresses, or changes in the anticipated economics associated with a project, we may decide to reduce the scope of, or abandon, a project, which could result in an asset impairment.

Technical landfill design. Upon receipt of initial regulatory approval, technical landfill designs are prepared. The technical designs, which include the detailed specifications to develop and construct all components of the landfill including the types and quantities of materials that will be required, are reviewed by our environmental management group. The technical designs are submitted to the regulatory agencies for approval. Upon approval of the technical designs, the regulatory agencies issue permits to develop and operate the landfill.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements may require changes in the landfill technical designs. These changes could make it more difficult and costly to meet new design standards.

•Technical design requirements, as approved, may need modifications at some future point in time.

•Technical designs could be inaccurate and could result in increased construction costs, difficulty in obtaining a permit or the use of rates to recognize the amortization of landfill development costs and asset retirement obligations that are not appropriate.

Permitted and probable landfill disposal capacity. Included in the technical designs are factors that determine the ultimate disposal capacity of the landfill. These factors include the area over which the landfill will be developed, such as the depth of excavation, the height of the landfill elevation and the angle of the side-slope construction. The disposal capacity of the landfill is calculated in cubic yards. This measurement of volume is then converted to a disposal capacity expressed in tons based on a site-specific expected density to be achieved over the remaining operating life of the landfill.

These estimates are subject to uncertainty attributable to:

•Estimates of future disposal capacity may change as a result of changes in legislative or regulatory design requirements.

•The density of waste may vary due to variations in operating conditions, including waste compaction practices, site design, climate and the nature of the waste.

•Capacity is defined in cubic yards but waste received is measured in tons. The number of tons per cubic yard varies by type of waste and our rate of compaction.

Development costs. The types of costs that are detailed in the technical design specifications generally include excavation, natural and synthetic liners, construction of leachate collection systems, installation of methane gas collection systems and monitoring probes, installation of groundwater monitoring wells, construction of leachate management facilities and other costs associated with the development of the site. We review the adequacy of our cost estimates on an annual basis by comparing estimated costs with third-party bids or contractual arrangements, reviewing the changes in year-over-year cost estimates for reasonableness, and comparing our resulting development cost per acre with prior period costs. These development costs, together with any costs incurred to acquire, design and permit the landfill, including capitalized interest, are recorded to the landfill asset on the balance sheet as incurred.

These estimates are subject to uncertainty attributable to:

•Actual future costs of construction materials and third-party labor could differ from the costs we have estimated because of the level of demand and the availability of the required materials and labor. Technical designs could be altered due to unexpected operating conditions, regulatory changes or legislative changes.

Landfill development asset amortization. To match the expense related to the landfill asset with the revenue generated by the landfill operations, we amortize the landfill development asset over its operating life on a per-ton basis as waste is accepted at the landfill. The landfill asset is fully amortized at the end of a landfill’s operating life. The per-ton rate is calculated by dividing the sum of the landfill development asset net book value plus estimated future development costs (as described above) for the landfill, by the landfill’s estimated remaining disposal capacity. The expected future development costs are not inflated or discounted, but rather expressed in nominal dollars. This rate is applied to each ton accepted at the landfill to arrive at amortization expense for the period.

Amortization rates may be sensitive to the original cost basis of the landfill, including acquisition costs, which in turn is determined by geographic location and market values. We secure significant landfill assets through business acquisitions and

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value them at the time of acquisition based on fair value. Amortization rates are also influenced by site-specific engineering and cost factors.

These estimates are subject to uncertainty attributable to:

•Changes in our future development cost estimates or our disposal capacity will normally result in a change in our amortization rates and will impact amortization expense prospectively. An unexpected significant increase in estimated costs or reduction in disposal capacity could affect the ongoing economic viability of the landfill and result in asset impairment.

On at least an annual basis, we update the estimates of future development costs and remaining disposal capacity for each landfill. These costs and disposal capacity estimates are reviewed and approved by senior operations management annually. Changes in cost estimates and disposal capacity are reflected prospectively in the landfill amortization rates that are updated annually. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Landfill Asset Retirement Obligations

We have two types of retirement obligations related to landfills: (1) capping and (2) closure and post-closure. As of December 31, 2021 and 2020, our asset retirement obligations related to capping, closure and post-closure were $1,507.3 million and $1,346.4 million, respectively. Changes in these estimates may be sensitive to changes in available airspace, cost estimates, inflation, our credit-adjusted, risk-free interest rate and applicable regulations.

Obligations associated with final capping activities that occur during the operating life of the landfill are recognized on a units-of-consumption basis as airspace is consumed within each discrete capping event. Obligations related to closure and post-closure activities that occur after the landfill has ceased operations are recognized on a units-of-consumption basis as airspace is consumed throughout the entire life of the landfill. Landfill retirement obligations are capitalized as the related liabilities are recognized and amortized using the units-of-consumption method over the airspace consumed within the capping event or the airspace consumed within the entire landfill, depending on the nature of the obligation. All obligations are initially measured at estimated fair value. Fair value is calculated on a present value basis using an inflation rate and our credit-adjusted, risk-free rate in effect at the time the liabilities were incurred. Future costs for final capping, closure and post-closure are developed at least annually by engineers, and are inflated to future value using estimated future payment dates and inflation rate projections.

Landfill capping. As individual areas within each landfill reach capacity, we must cap and close the areas in accordance with the landfill site permit. These requirements are detailed in each landfill's technical design, which is reviewed and approved by the regulatory agency issuing the landfill site permit.

Closure and post-closure. Closure costs are costs incurred after a landfill stops receiving waste, but prior to being certified as closed. After the entire landfill has reached capacity and is certified closed, we must continue to maintain and monitor the site for a post-closure period, which generally extends for 30 years. Costs associated with closure and post-closure requirements generally include maintenance of the site, the monitoring of methane gas collection systems and groundwater systems, and other activities that occur after the site has ceased accepting waste. Costs associated with post-closure monitoring generally include groundwater sampling, analysis and statistical reports, third-party labor associated with gas system operations and maintenance, transportation and disposal of leachate, and erosion control costs related to the final cap.

Landfill retirement obligation liabilities and assets. Estimates of the total future costs required to cap, close and monitor each landfill as specified by the landfill permit are updated annually. The estimates include inflation, the specific timing of future cash outflows, and the anticipated waste flow into the capping events. Our cost estimates are inflated to the period of performance using an estimate of inflation, which is updated annually and is based upon the ten year average consumer price index (1.7% in both 2021 and 2020).

The present value of the remaining capping costs for specific capping events and the remaining closure and post-closure costs for each landfill are recorded as incurred on a per-ton basis. These liabilities are incurred as disposal capacity is consumed at the landfill.

Capping, closure and post-closure liabilities are recorded in layers and discounted using our credit-adjusted risk-free rate in effect at the time the obligation is incurred (3.4% in both 2021 and 2020).

Retirement obligations are increased each year to reflect the passage of time by accreting the balance at the weighted average credit-adjusted risk-free rate that was used to calculate each layer of the recorded liabilities. This accretion is charged to operating expenses. Actual cash expenditures reduce the asset retirement obligation liabilities as they are made.

Corresponding retirement obligation assets are recorded for the same value as the additions to the capping, closure and post-closure liabilities. The retirement obligation assets are amortized to expense on a per-ton basis as disposal capacity is consumed. The per-ton rate is calculated by dividing the sum of each of the recorded retirement obligation asset’s net book

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value and expected future additions to the retirement obligation asset by the remaining disposal capacity. A per-ton rate is determined for each separate capping event based on the disposal capacity relating to that event. Closure and post-closure per-ton rates are based on the total disposal capacity of the landfill.

These estimates are subject to uncertainty attributable to:

•Changes in legislative or regulatory requirements, including changes in capping, closure activities or post-closure monitoring activities, types and quantities of materials used, or term of post-closure care, could cause changes in our cost estimates.

•Changes in the landfill retirement obligation due to changes in the anticipated waste flow, changes in airspace compaction estimates or changes in the timing of expenditures for closed landfills and fully incurred but unpaid capping events are recorded in results of operations prospectively. This could result in unanticipated increases or decreases in expense.

•Actual timing of disposal capacity utilization could differ from projected timing, causing differences in timing of when amortization and accretion expense is recognized for capping, closure and post-closure liabilities.

•Changes in inflation rates could impact our actual future costs and our total liabilities.

•Changes in our capital structure or market conditions could result in changes to the credit-adjusted risk-free rate used to discount the liabilities, which could cause changes in future recorded liabilities, assets and expense.

•Amortization rates could change in the future based on the evaluation of new facts and circumstances relating to landfill capping design, post-closure monitoring requirements, or the inflation or discount rate.

On an annual basis, we update our estimates of future capping, closure and post-closure costs and of future disposal capacity for each landfill. Revisions in estimates of our costs or timing of expenditures are recognized immediately as increases or decreases to the capping, closure and post-closure liabilities and the corresponding retirement obligation assets. Changes in the assets result in changes to the amortization rates which are applied prospectively, except for fully incurred capping events and closed landfills, where the changes are recorded immediately in results of operations since the associated disposal capacity has already been consumed. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on changes to our landfill depletion and amortization.

Permitted and probable disposal capacity. Disposal capacity is determined by the specifications detailed in the landfill permit. We classify this disposal capacity as permitted. We also include probable expansion disposal capacity in our remaining disposal capacity estimates, thus including additional disposal capacity being sought through means of a permit expansion. Probable expansion disposal capacity has not yet received final approval from the applicable regulatory agencies, but we have determined that certain critical criteria have been met and that the successful completion of the expansion is probable. We have developed six criteria that must be met before an expansion area is designated as probable expansion airspace. We believe that satisfying all of these criteria demonstrates a high likelihood that expansion airspace that is incorporated in our landfill costing will be permitted. However, because some of these criteria are judgmental, they may exclude expansion airspace that will eventually be permitted or include expansion airspace that will not be permitted. In either of these scenarios, our amortization, depletion and accretion expense could change significantly. Our internal criteria to classify disposal capacity as probable expansion airspace are as follows:

•We own the land associated with the expansion airspace or control it pursuant to an option agreement;

•We are committed to supporting the expansion project financially and with appropriate resources;

•There are no identified fatal flaws or impediments associated with the project, including political impediments;

•Progress is being made on the project;

•The expansion is attainable within a reasonable time frame; and

•We believe it is likely we will receive the expansion permit.

After successfully meeting these criteria, the disposal capacity that will result from the planned expansion is included in our remaining disposal capacity estimates. Additionally, for purposes of calculating landfill amortization and capping, closure and post-closure rates, we include the incremental costs to develop, construct, close and monitor the related probable expansion disposal capacity.

These estimates are subject to uncertainty attributable to:

•We may be unsuccessful in obtaining permits for probable expansion disposal capacity because of the failure to obtain the final local, state or federal permits or due to other unknown reasons. If we are unsuccessful in obtaining permits for

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probable expansion disposal capacity, or the disposal capacity for which we obtain approvals is less than what was estimated, both our estimated total costs and disposal capacity will be reduced, which generally increases the rates we charge for landfill amortization and capping, closure and post-closure accruals. An unexpected decrease in disposal capacity could also cause an asset impairment.

Environmental Liabilities

We are subject to an array of laws and regulations relating to the protection of the environment, and we remediate sites in the ordinary course of our business. Under current laws and regulations, we may be responsible for environmental remediation at sites that we either own or operate, including sites that we have acquired, or sites where we have (or a company that we have acquired has) delivered waste. Our environmental remediation liabilities primarily include costs associated with remediating groundwater, surface water and soil contamination, as well as controlling and containing methane gas migration and the related legal costs. To estimate our ultimate liability at these sites, we evaluate several factors, including the nature and extent of contamination at each identified site, the required remediation methods, timing of expenditures, the apportionment of responsibility among the potentially responsible parties and the financial viability of those parties. We accrue for costs associated with environmental remediation obligations when such costs are probable and reasonably estimable in accordance with accounting for loss contingencies. We periodically review the status of all environmental matters and update our estimates of the likelihood of and future expenditures for remediation as necessary. Changes in the liabilities resulting from these reviews are recognized currently in earnings in the period in which the adjustment is known. Adjustments to estimates are reasonably possible in the near term and may result in changes to recorded amounts. With the exception of those obligations assumed in certain business combinations, environmental obligations are recorded on an undiscounted basis. Environmental obligations assumed in certain business combinations are initially estimated on a discounted basis, and accreted to full value over time through charges to interest expense. Adjustments arising from changes in amounts and timing of estimated costs and settlements may result in increases or decreases in these obligations and are calculated on a discounted basis as they were initially estimated on a discounted basis. These adjustments are charged to operating income when they are known. We perform a comprehensive review of our environmental obligations annually and also review changes in facts and circumstances associated with these obligations at least quarterly. See our Results of Operations section in this Management's Discussion and Analysis of Financial Condition and Results of Operations for discussion on our remediation adjustments. We have not reduced the liabilities we have recorded for recoveries from other potentially responsible parties or insurance companies. As of December 31, 2021 and 2020, we had $454.9 million and $462.8 million of environmental liabilities. Changes in these estimates may be sensitive to changes in cost estimates, timing of estimated costs and settlements, inflation, our credit-adjusted, risk-free interest rate and applicable regulations.

These estimates are subject to uncertainty attributable to:

•We cannot determine with precision the ultimate amounts of our environmental remediation liabilities. Our estimates of these liabilities require assumptions about uncertain future events. Thus, our estimates could change substantially as additional information becomes available regarding the nature or extent of contamination, the required remediation methods, timing of expenditures, the final apportionment of responsibility among the potentially responsible parties identified, the financial viability of those parties, and the actions of governmental agencies or private parties with interests in the matter. The actual environmental costs may exceed our current and future accruals for these costs, and any adjustments could be material.

•Actual amounts could differ from the estimated liabilities as a result of changes in estimated future litigation costs to pursue the matter to ultimate resolution.

•An unanticipated environmental liability that arises could result in a material charge to our consolidated statements of income.

Insurance Reserves and Related Costs

Our insurance policies for workers' compensation, commercial general liability, commercial auto liability and environmental liability are high deductible, or retention programs. The deductibles, or retentions, range from $3 million to $10 million. The employee-related health benefits are also subject to a high-deductible insurance policy. Accruals for deductibles or retentions are based on claims filed and actuarial estimates of claims development and claims incurred but not reported. As of December 31, 2021 and 2020, our insurance reserves were $497.4 million and $449.3 million, respectively. Changes in these estimates may be sensitive to changes in the frequency, severity and settlement amount of claims.

These estimates are subject to uncertainty attributable to:

•Incident rates, including frequency and severity, and other actuarial assumptions could change causing our current and future actuarially determined obligations to change, which would be reflected in our consolidated statements of income in the period in which such adjustment is known.

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•Recorded reserves may not be adequate to cover the future payment of claims. Adjustments, if any, to estimates recorded resulting from ultimate claim payments would be reflected in the consolidated statements of income in the periods in which such adjustments are known.

•The settlement costs to discharge our obligations, including legal and health care costs, could increase or decrease causing current estimates of our insurance reserves to change.

New Accounting Standards

For a description of new accounting standards that may affect us, see Note 2, Summary of Significant Accounting Policies, of the notes to our consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.