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

The California Department of Toxic Substances Control has issued an Emergency Permit to EMD Millipore Sigma Company for the chemical stabilization of hazardous waste at their facility in Visalia, California. This emergency action is mandated to prevent accidents or severe injuries by treating reactive chemicals with peroxide formation that pose a risk of fire or explosion during transport. The permit is effective from October 22, 2025, through December 21, 2025, and authorizes Clean Harbors Environmental Services to perform the stabilization process. The scope of work involves treating specific quantities of Ethyl Ether, Diisopropyl Ether, Tetrahydrofuran, Tert Butyl Methyl Ether, Styrene, and Acrylic Acid through controlled reactions with chemical solutions to reduce ignitable and reactive characteristics. All treatment activities must occur within a designated exclusion zone accessible only to Clean Harbors technicians and must adhere to established safety standards. Following the expiration of the permit, EMD Millipore Sigma Company is required to submit a final report within 10 business days, signed in accordance with Title 22, CCR Sec. 66270.11(d), certifying that the treatment area is clear of residual hazardous waste and that all generated waste has been properly managed.