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INVENTORIES AND SUPPLIES
 6 Months Ended
Jun. 30, 2025
Inventory Disclosure [Abstract]  
INVENTORIES AND SUPPLIES INVENTORIES AND SUPPLIES
Inventories and supplies consisted of the following (in thousands):
June 30, 2025December 31, 2024
Supplies$215,415 $200,905 
Oil and oil related products137,812 152,992 
Solvent and solutions11,837 12,458 
Other18,287 18,302 
Total inventories and supplies$383,351 $384,657 
Supplies inventories consist primarily of critical spare parts to support the Company’s incinerator and re-refinery operations and other general supplies used in our normal day-to-day operations. Other inventories consist primarily of parts washer components, cleaning fluids, absorbents and automotive fluids, such as windshield washer fluid and antifreeze.