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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2021
Property and Equipment  
Schedule of investment in property and equipment

Estimated

December 31,

(in thousands)

    

Useful Lives

    

2020

2021

Land

    

n/a

    

$

23,582

    

23,369

Gathering systems and facilities

40-50 years (1)

2,643,927

2,817,918

Permanent buried pipelines and equipment

7-20 years

545,419

582,481

Surface pipelines and equipment

1-7 years

50,916

54,542

Heavy trucks and equipment

3-5 years

5,919

5,157

Above ground storage tanks

5-10 years

2,483

2,946

Construction-in-progress

n/a

 

139,506

174,271

Total property and equipment

3,411,752

3,660,684

Less accumulated depreciation

(157,708)

(265,938)

Property and equipment, net

$

3,254,044

3,394,746

(1)Gathering systems and facilities are recognized as a single-leased asset with no residual value.