| Schedule of property and equipment, net |
| | | | | | | | | | | | | | | | June 30, 2025 | | December 31, 2024 | | | | (in thousands) | Machinery and equipment | | $ | 534,786 | | $ | 581,566 | Gathering and disposal infrastructure | | | 342,640 | | | 309,854 | Pipelines | | | 156,086 | | | 103,425 | Recycling facilities | | | 147,251 | | | 115,227 | Buildings and leasehold improvements | | | 99,940 | | | 109,520 | Land | | | 40,769 | | | 39,960 | Vehicles and equipment | | | 9,609 | | | 13,870 | Computer equipment and software | | | 8,899 | | | 7,864 | Machinery and equipment - finance lease | | | 3,079 | | | 533 | Computer equipment and software - finance lease | | | 863 | | | 904 | Office furniture and equipment | | | 610 | | | 453 | Construction in progress | | | 122,910 | | | 122,310 | | | | 1,467,442 | | | 1,405,486 | Less accumulated depreciation(1) | | | (672,698) | | | (679,832) | Property and equipment held-for-sale, net | | | 5,663 | | | — | Total property and equipment, net | | $ | 800,407 | | $ | 725,654 |
| (1) | Includes $1.2 million and $0.9 million of accumulated depreciation related to finance leases as of June 30, 2025 and December 31, 2024, respectively. |
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| Schedule of amortization and depreciation expenses |
| | | | | | | | | | | | | | | | Three months ended June 30, | | Six months ended June 30, | | | | 2025 | | 2024 | | 2025 | | 2024 | | | | | (in thousands) | | Category | | | | | | | | | | | | | | Depreciation expense from property and equipment | | $ | 37,376 | | $ | 33,760 | | $ | 71,420 | | $ | 67,524 | | Amortization expense from finance leases | | | 182 | | | 51 | | | 351 | | | 113 | | Amortization expense from intangible assets | | | 4,378 | | | 4,129 | | | 8,756 | | | 8,199 | | Accretion expense from asset retirement obligations | | | 1,036 | | | 253 | | | 2,045 | | | 507 | | Total depreciation, amortization and accretion | | $ | 42,972 | | $ | 38,193 | | $ | 82,572 | | $ | 76,343 | |
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