Federal Register #2026-12544

EPA grants no-migration variance for temporary hazardous waste storage at Clean Harbors Grassy Mountain facility in Utah.

This EPA action concerns hazardous waste management at the Clean Harbors Grassy Mountain facility in Utah. - Government Buyer: - Environmental Protection Agency (EPA) - Facility: Clean Harbors Grassy Mountain commercial treatment, storage, and disposal facility (TSDF), Tooele County, Utah - OEMs and Vendors: - Clean Harbors (facility operator and petitioner) - Products/Services Requested: - Temporary storage of up to 250 treated hazardous waste 'put piles' within the Subtitle C landfill - Engineered controls required: - 20-mil polyethylene geomembrane liner - Posi-Shell spray-applied mortar cover - Stormwater run-on/run-off controls - Compliance monitoring plan - Unique/Notable Requirements: - No-migration variance granted for four categories of hazardous wastes - Temporary storage limited to 180 days per put pile - Strict inspection, reporting, and remediation protocols - Approval is specific to Clean Harbors and does not constitute a procurement opportunity or award

Description

The Environmental Protection Agency (EPA) is approving with conditions no-migration variances for four categories/groups of wastes, allowing up to 250 temporary disposal units (put piles) at any one time at Clean Harbors' Grassy Mountain commercial treatment, storage, and disposal facility in Tooele County, Utah. These variances permit temporary storage of treated hazardous wastes awaiting Land Disposal Restrictions (LDR) compliance verification within the Subtitle C landfill. The petitioner demonstrated that there will be no migration of hazardous constituents from the put piles while the wastes remain hazardous. Once LDR compliance is verified, the wastes will be disposed of within the onsite hazardous waste landfill cell under specified conditions.

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