| Line | Roll Up Total Concept | Roll Up Items Concept | Count |
|---|---|---|---|
| 1 | us-gaap:Supplies | us-gaap:InventoryCrudeOilProductsAndMerchandise | 1 |
| 2 | us-gaap:Supplies | us-gaap:EnergyRelatedInventoryChemicals | 1 |
| 3 | us-gaap:Supplies | clh:EnergyRelatedInventorySuppliesAndDrums | 1 |
| 4 | us-gaap:Supplies | clh:EnergyRelatedInventoryModularCampAccommodations | 1 |
| 5 | us-gaap:Supplies | clh:EnergyRelatedInventoryOther | 1 |
(Note that this is a work in progress!)