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INVENTORIES AND SUPPLIES | 3 Months Ended
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Mar. 31, 2026
Inventory Disclosure [Abstract] |
INVENTORIES AND SUPPLIES | INVENTORIES AND SUPPLIES Inventories and supplies consisted of the following (in thousands):
| March 31, 2026 |  | December 31, 2025
Supplies | $ | 220,055 |  |  | $ | 217,028 |
Oil and oil related products | 112,423 |  |  | 123,883 |
Solvent and solutions | 12,545 |  |  | 11,589 |
Other | 18,912 |  |  | 19,588 |
Total inventories and supplies | $ | 363,935 |  |  | $ | 372,088 |
Supplies inventories consist primarily of critical spare parts to support the Company’s incinerator, refurbishment center and re-refinery operations and other general supplies used in normal day-to-day operations. Stocking crucial spare parts, largely for the sustained functioning of the Company’s incinerator facilities, has resulted in significant supplies inventory balances. Oil and oil related products inventory has decreased due to lower volumes of oil inventory on hand at March 31, 2026 when compared to December 31, 2025. Other inventories consist primarily of parts washer components, cleaning fluids, absorbents and automotive fluids, such as windshield washer fluid and antifreeze.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/330/tableOfContent + Details
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