Environmental Protection Agency
The U.S. Environmental Protection Agency (EPA) is proposing to grant, with conditions, no-migration variances for four categories/ groups of wastes, containing up to 250 temporary disposal units ("put piles") at any one time, from the Resource Conservation and Recovery Act (RCRA) Land Disposal Restrictions (LDR) standards at Clean Harbors' Grassy Mountain (Clean Harbors) commercial treatment, storage and disposal facility (TSDF) in Tooele County, UT. These variances will allow Clean Harbors to temporarily store treated hazardous wastes that are awaiting LDR compliance verification in put piles within their Subtitle C (hazardous waste) landfill. The petitioner demonstrated, to a reasonable degree of certainty, that there will be no migration of hazardous constituents from the disposal units for as long as the wastes remain hazardous. Additionally, once LDR compliance is verified, the put piles will be disposed within the onsite RCRA hazardous waste Landfill area and will be subject to the conditions set out in the Compliance Monitoring Plan section of this document.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 268 [EPA-R08-RCRA-2025-0420; FRL-12863-01-R8] AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of proposal to grant. SUMMARY: The U.S. Environmental Protection Agency (EPA) is proposing to grant, with conditions, no-migration variances for four categories/groups of wastes, containing up to 250 temporary disposal units (“put piles”) at any one time, from the Resource Conservation and Recovery Act (RCRA) Land Disposal Restrictions (LDR) standards at Clean Harbors' Grassy Mountain (Clean Harbors) commercial treatment, storage and disposal facility (TSDF) in Tooele County, UT. These variances will allow Clean Harbors to temporarily store treated hazardous wastes that are awaiting LDR compliance verification in put piles within their Subtitle C (hazardous waste) landfill. The petitioner demonstrated, to a reasonable degree of certainty, that there will be no migration of hazardous constituents from the disposal units for as long as the wastes remain hazardous. Additionally, once LDR compliance is verified, the put piles will be disposed within the onsite RCRA hazardous waste Landfill area and will be subject to the conditions set out in the Compliance Monitoring Plan section of this document. DATES: Comments must be received on or before January 30, 2026. ADDRESSES: You may send comments, identified by EPA-R08-RCRA-2025-0420, by any of the following methods: Federal eRulemaking portal: https://www.regulations.gov…
Citation: 90 FR 61356
