| Schedule of property and equipment, net |
| | | | | | | | | | | | | | | | March 31, 2025 | | December 31, 2024 | | | | (in thousands) | Machinery and equipment | | $ | 585,511 | | $ | 581,566 | Gathering and disposal infrastructure | | | 320,886 | | | 309,854 | Pipelines | | | 138,398 | | | 103,425 | Recycling facilities | | | 126,873 | | | 115,227 | Buildings and leasehold improvements | | | 104,443 | | | 109,520 | Land | | | 39,930 | | | 39,960 | Vehicles and equipment | | | 12,780 | | | 13,870 | Computer equipment and software | | | 7,864 | | | 7,864 | Machinery and equipment - finance lease | | | 2,285 | | | 533 | Computer equipment and software - finance lease | | | 895 | | | 904 | Office furniture and equipment | | | 453 | | | 453 | Construction in progress | | | 131,473 | | | 122,310 | | | | 1,471,791 | | | 1,405,486 | Less accumulated depreciation(1) | | | (704,300) | | | (679,832) | Total property and equipment, net | | $ | 767,491 | | $ | 725,654 |
| (1) | Includes $1.1 million and $0.9 million of accumulated depreciation related to finance leases as of March 31, 2025 and December 31, 2024, respectively. |
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| Schedule of amortization and depreciation expenses |
| | | | | | | | | | Three months ended March 31, | | | | 2025 | | 2024 | | | | | (in thousands) | | Category | | | | | | | | Depreciation expense from property and equipment | | $ | 34,044 | | $ | 33,764 | | Amortization expense from finance leases | | | 169 | | | 62 | | Amortization expense from intangible assets | | | 4,378 | | | 4,070 | | Accretion expense from asset retirement obligations | | | 1,009 | | | 254 | | Total depreciation, amortization and accretion | | $ | 39,600 | | $ | 38,150 | |
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