Emergency Permit for Treatment of Hazardous Waste, University of California-Davis, Davis, CA


SCH Number
Public Agency
Department of Toxic Substances Control
Document Title
Emergency Permit for Treatment of Hazardous Waste, University of California-Davis, Davis, CA
Document Type
NOE - Notice of Exemption
Document Description
The California Department of Toxic Substances Control (DTSC), pursuant to authority granted under California Code of Regulations, Title 22, Division 4.5, Chapter 20, Section 66270.61, has issued an Emergency Permit to the University of California - Davis (EPA ID# CAD047120084) to treat hazardous waste through controlled reactions with chemical solutions. Specifically, two 500-milliliter containers of Methacrylate Solution, one 250-gram container of 2,4 Dinitrophenol, one 2-pound container of Picric Acid, and one 25-gram container of Diazald. These chemicals are currently being stored at University of California - Davis located at 2201 Environmental Services Lane, Davis, California 95616. DTSC has determined as a safety precaution to prevent an accident or severe injury, an Emergency Permit should be issued to chemically stabilize the hazardous waste prior to storage and eventual transportation off-site by Clean Harbors Environmental Services (CHES). Background: Methacrylate Solution is a peroxide forming material. The peroxides produced may be unstable at relatively low concentrations, resulting in fire and/or explosion if improperly handled. 2,4 Dinitrophenol, Picric Acid, and Diazald are shock sensitive. External energy input may cause complete or partial detonation of the material, making transport of non-stabilized 2,4 Dinitrophenol, Picric Acid, and Diazald hazardous. Diazald is also temperature sensitive. Further instability can be introduced as the chemical and/or the storage container degrades (i.e. after the product’s expiration date). Chemical stabilization is recommended prior to transport to a permitted treatment, storage, and disposal facility. Project Activities: The treatment of the hazardous waste involves the addition of solution to the containers in a controlled manner to reduce the reactive or ignitable characteristics of the chemical. Treatment will take place within a designated exclusion zone. Only technicians from CHES will be allowed in the exclusion zone. Movement, preparation, and treatment of the containers will be in accordance with established standards. Within 10 business days of the expiration of this permit, University of California - Davis will submit a final report, signed in accordance with Title 22, California Code of Regulations section 66270.11(d). The report shall include certification that the treatment area has been cleared of all residual hazardous waste generated from this emergency treatment and all generated waste has been properly managed. The Emergency Permit is effective beginning February 5, 2020 and shall expire on April 5, 2020.

Contact Information

Vinke Menardo
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency

Agency Name
Pat Ruchirushkul, EHS Supervisor, University of California - Davis
Contact Types
Project Applicant


Other Location Info
2201 Environmental Services Lane, Davis, California 95616

Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
Sec. 21080(b)(4); 15269(b)(c)
Reasons for Exemption
This action is necessary to prevent an emergency. Chemical stabilization of the chemicals is necessary prior to transportation to an authorized hazardous waste treatment, storage, and disposal facility to prevent accidental fire and/or explosion during transport.


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