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Property and Equipment, Net
12 Months Ended
Dec. 31, 2021
Property and Equipment, Net [Abstract]  
Property and Equipment, Net

6.     PROPERTY AND EQUIPMENT, NET

Property and equipment, net consists of the following:

December 31, 

    

2021

    

2020

Landfill site costs

$

4,447,530

$

4,205,968

Rolling stock

 

2,483,294

 

2,227,951

Land, buildings and improvements

 

1,339,542

 

1,147,358

Containers

 

983,602

 

845,386

Machinery and equipment

 

940,723

 

820,533

Construction in progress

 

82,187

 

41,668

 

10,276,878

 

9,288,864

Less accumulated depreciation and depletion

 

(4,554,929)

 

(4,004,358)

$

5,721,949

$

5,284,506

Machinery and equipment included $10,342 and $3,754, at December 31, 2021 and 2020, respectively, of equipment assets accounted for as finance leases.  The Company’s landfill depletion expense, recorded in Depreciation in the Consolidated Statements of Net Income, for the years ended December 31, 2021, 2020 and 2019, was $212,898, $200,374 and $225,687, respectively.