Emergency Permit for Management of Hazardous Waste, EMD Millipore Sigma Company, Visalia, California

The California Department of Toxic Substances Control (DTSC) has issued an emergency permit to EMD Millipore Sigma Company, with Clean Harbors Environmental Services as the designated contractor, to chemically stabilize a volatile mixture of hazardous wastes stored at 8511 West Riggin Avenue in Visalia, California. The permit, effective from October 22, 2025, through December 21, 2025, authorizes the immediate treatment of fourteen 1-liter containers of Ethyl Ether, two 1-liter containers of Diisopropyl Ether, fifty-five 1-liter containers of Tetrahydrofuran, one 2.5-liter container of Tert Butyl Methyl Ether, three 1-liter and one 500-milliliter container of Styrene, and six 500-gram and one 1-liter container of Acrylic Acid. These chemicals pose imminent fire and explosion risks due to peroxide formation, necessitating urgent stabilization under California Code of Regulations Title 22, Division 4.5, Chapter 20, Section 66270.61. All stabilization work must be conducted within a controlled exclusion zone by certified Clean Harbors personnel, with no unauthorized access permitted. The stabilized waste is to be transported to an authorized hazardous waste treatment, storage, and disposal facility, with acceptance occurring at that destination. The permit requires a final compliance report to be submitted to DTSC within ten business days of expiration, certifying the complete removal of all residual hazardous waste and adherence to all regulatory standards. The activity is exempt from California Environmental Quality Act review under Public Resources Code Section 21080(b)(4) and 14 CCR Section 15269(b)(c) due to the emergency nature of the hazard. No contract value, pricing, or acquisition cost information is provided, as the action is regulatory rather than commercial. No federal acquisition regulations apply, and no standard FAR clauses, competitive solicitation, evaluation factors, or socioeconomic set-asides are involved. Packaging, marking, labeling, and transport standards beyond the chemical stabilization process are not detailed in the documentation. The only identifiers referenced are the EPA ID# CAR000301093 for EMD Millipore Sigma Company and the operational authority granted under California state law, with point of contact information provided for DTSC’s Hazardous Substances Engineer and EMD Millipore Sigma’s Associate Manager