Temporary Emergency Permit to Store and Treat Hazardous Waste by Dilution, Northrop Grumman Space Technology


SCH Number
Public Agency
Department of Toxic Substances Control
Document Title
Temporary Emergency Permit to Store and Treat Hazardous Waste by Dilution, Northrop Grumman Space Technology
Document Type
NOE - Notice of Exemption
Document Description
A temporary emergency Hazardous Waste Permit has been granted to Northrop Grumman Space Technology (NGST) to store hazardous waste for up to 90 days and then to treat the hazardous waste by dilution in order to transport it offsite for disposal. The hazardous waste to be stored and treated is approximately 2 gallons of a reactive mixture, consisting of 20% hydroxyethylhydrazinium nitrate (HEHN), 70% water, and 10% organic solvents. The hazardous waste was generated from research activities. The waste was inaccurately classified as a flammable liquid rather than an explosive hazard, delaying shipment of the waste to a disposal site. The 90-day limit for storage of a hazardous waste allowed under a previous emergency permit will expire before permission is secured from Department of Transportation to ship the hazardous waste. Before shipment, the mixture will be treated by further dilution with water from approximately 20% HEHN to 1% to 2% HEHN. The final volume of hazardous waste will be approximately 40 gallons. As NGST does not hold a facility hazardous waste management permit for the location where the storage and treatment would take place, the Department of Toxic Substances Control (DTSC) has determined that an emergency permit should be issued. The permit is effective from November 13, 2008 to February 10, 2009.

Contact Information

Beverly Rikala
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency


Los Angeles

Notice of Exemption

Exempt Status
Type, Section or Code
Sec 15269(b)/(c)
Reasons for Exemption
Based on the authority granted to DTSC, pursuant to Title 22, California Code of Regulations Section 66270.61, DTSC finds there to be imminent and substantial endangerment to human health and the environment. This permit is not transferable to any other party and may not be used in any other capacity by NGST. This permit may be revoked by DTSC at any time without process if it is determined that termination is appropriate to protect human health and the environment.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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