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SEGMENT REPORTING
 6 Months Ended
Jun. 30, 2024
Segment Reporting [Abstract]  
SEGMENT REPORTING SEGMENT REPORTING
We report selected information about our reportable operating segments in a manner consistent with that used for internal management reporting. We classify our solid waste operations on a geographic basis through regional operating segments, our Eastern, Western and Mid-Atlantic regions. Revenues associated with our solid waste operations are derived mainly from solid waste collection and disposal services, including landfill, transfer station and transportation services, landfill gas-to-energy services, and processing services in the eastern United States. Our Resource Solutions operating segment leverages our core competencies in materials processing, industrial recycling, organics and resource management service offerings to deliver a comprehensive solution for our larger commercial, municipal, institutional and industrial customers that have more diverse waste and recycling needs. Revenues associated with our Resource Solutions operations are comprised of processing services and non-processing services, which we refer to as our National Accounts business. Revenues from processing services are derived from customers in the form of processing fees, tipping fees, commodity sales, and organic material sales. Revenues from our National Accounts business are derived from brokerage services and overall resource management services providing a wide range of environmental services and resource management solutions to large and complex organizations, as well as traditional collection, disposal and recycling services provided to large account multi-site customers. Legal, tax, information technology, human resources, certain finance and accounting and other administrative functions are included in our Corporate Entities segment, which is not a reportable operating segment. Corporate Entities results reflect those costs not allocated to our reportable operating segments.
Three Months Ended June 30, 2024
SegmentOutside
revenues		Inter-company
revenues		Depreciation and
amortization		Operating
income (loss)		Total
assets
Eastern$106,491 $26,422 $14,016 $10,543 $433,988 
Western145,042 53,410 25,561 17,892 1,001,294 
Mid-Atlantic
42,412 376 10,239 (7,080)533,457 
Resource Solutions83,218 2,835 4,540 4,269 252,364 
Corporate Entities— — 982 (2,606)290,762 
Eliminations— (83,043)— — — 
$377,163 $— $55,338 $23,018 $2,511,865 

Three Months Ended June 30, 2023
SegmentOutside
revenues		Inter-company
revenues		Depreciation and
amortization		Operating
income (loss)		Total
assets
Eastern$93,323 $23,563 $12,148 $7,519 $366,892 
Western124,229 42,342 18,917 18,991 751,324 
Mid-Atlantic (1)
— — — — 550,758 
Resource Solutions72,093 3,316 3,090 688 203,049 
Corporate Entities— — 769 (4,584)545,269 
Eliminations— (69,221)— — — 
$289,645 $— $34,924 $22,614 $2,417,292 

Six Months Ended June 30, 2024
SegmentOutside
revenues		Inter-company
revenues		Depreciation and
amortization		Operating
income (loss)		Total assets
Eastern$200,495 $48,910 $27,484 $14,164 $433,988 
Western275,371 99,846 50,037 26,677 1,001,294 
Mid-Atlantic
84,015 589 20,563 (11,880)533,457 
Resource Solutions158,289 5,958 9,333 5,662 252,364 
Corporate Entities— — 1,958 (4,770)290,762 
Eliminations— (155,303)— — — 
Total$718,170 $— $109,375 $29,853 $2,511,865 
Six Months Ended June 30, 2023
SegmentOutside
revenues		Inter-company
revenues		Depreciation and
amortization		Operating
income (loss)		Total assets
Eastern$177,233 $42,932 $24,051 $9,659 $366,892 
Western235,262 78,901 36,583 31,417 751,324 
Mid-Atlantic (1)
— — — — 550,758 
Resource Solutions139,746 6,803 6,166 (1,255)203,049 
Corporate Entities— — 1,559 (6,942)545,269 
Eliminations— (128,636)— — — 
Total$552,241 $— $68,359 $32,879 $2,417,292 
(1)Operations under the Mid-Atlantic region commenced July 1, 2023.

A summary of our revenues attributable to services provided follows:
 Three Months Ended
June 30,		Six Months Ended
June 30,
 2024202320242023
Collection$223,959 $149,848 $435,318 $289,825 
Disposal65,123 63,629 115,262 115,096 
Landfill gas-to-energy
1,983 1,321 4,493 3,245 
Processing2,880 2,754 4,808 4,329 
Solid waste operations293,945 217,552 559,881 412,495 
Processing33,275 25,383 63,038 48,189 
National Accounts49,943 46,710 95,251 91,557 
Resource Solutions operations83,218 72,093 158,289 139,746 
Total revenues$377,163 $289,645 $718,170 $552,241