Clean Harbors Buttonwillow LLC vs Clean Harbors Grassy Mountain
Both: Landfill · Spent solvents (F001–F005) · Storage · Toxic metals (D004–D011) · Treatment.
How they differ
- Off-site receipts (latest Biennial Report): 1,000–10,000 tons vs 10,000–100,000 tons.
- Violation record (5 years): 6–20 violations vs 21+ violations.
- Waste received, by EPA code class: both: Spent solvents (F001–F005), Toxic metals (D004–D011); only Clean Harbors Grassy Mountain: Electroplating and metal-finishing wastes (F006–F019), Wood-preserving wastes and leachate (F032–F039).
- Permitted operating units: both: Landfill, Storage, Treatment; only Clean Harbors Grassy Mountain: Surface impoundment.
- Final penalties, last 5 years: 636,800 USD for Clean Harbors Buttonwillow LLC vs 0 USD for Clean Harbors Grassy Mountain.
- Formal enforcement actions, last 5 years: 6 for Clean Harbors Buttonwillow LLC vs 0 for Clean Harbors Grassy Mountain.
- Last on-site inspection: Jan 28, 2026 vs Sep 14, 2026.
Side by side
| Clean Harbors Buttonwillow LLC | Clean Harbors Grassy Mountain | |
|---|---|---|
| Location | 2500 West Lokern, Buttonwillow, California 93206-0000 | 3 Miles East 7 Miles North Of Knolls,exit 41 Of I-80, Knolls, Utah 84029 |
| Off-site receipts (latest Biennial Report) | 1,000–10,000 tons | 10,000–100,000 tons |
| Violation record (5 years) | 6–20 violations | 21+ violations |
| How received waste was managed | Landfill | Landfill |
| Waste received, by EPA code class | Toxic metals (D004–D011), Spent solvents (F001–F005) | Toxic metals (D004–D011), Electroplating and metal-finishing wastes (F006–F019), Spent solvents (F001–F005), Wood-preserving wastes and leachate (F032–F039) |
| Permitted operating units | Landfill, Treatment, Storage | Landfill, Surface impoundment, Treatment, Storage |
| Final penalties, last 5 years | 636,800 USD | 0 USD |
| Formal enforcement actions, last 5 years | 6 | 0 |
| Last on-site inspection | Jan 28, 2026 | Sep 14, 2026 |
| EPA ID | CAD980675276 | UTD991301748 |
| Operator | Clean Harbors Buttonwillow LLC | Clean Harbors Environmental |
| Waste received from off-site | 1,337.5 tons | 46,641.3 tons |
| Inspections, last 5 years | 8 | 11 |
| Violations, last 5 years | 12 | 21 |
| Violations not yet returned to compliance | 0 | 3 |
| Violation areas (5 years) | State Statute or Regulation, TSD IS-Container Use and Management, Generators - General, TSD - Preparedness and Prevention | Permit Condition or Requirement, TSD - Container Use and Management, Federal or State Statute, Used Oil - Generators |
| Used oil activities | No | Yes |
| Transfer facility | Yes | Yes |
| Recycler | No | No |
| Primary NAICS | 562211 | 562211 |
| Source record | U.S. EPA RCRAInfo, verified Oct 20, 2026 | U.S. EPA RCRAInfo, verified Oct 20, 2026 |
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