Amendment to Order on Consent for Interim Response Action at the RMHF Complex


SCH Number
Public Agency
Department of Toxic Substances Control
Document Title
Amendment to Order on Consent for Interim Response Action at the RMHF Complex
Document Type
NOE - Notice of Exemption
Document Description
The purpose of this project is the demolition and removal of the above ground portions of eight remaining United States Department of Energy (D O E) buildings in Area IV at the Santa Susana Field Laboratory (SSFL). Department of Toxic Substances Control (DTSC) and D O E have agreed that it is necessary to mitigate the potential release of hazardous substances at or emanating from the Site in the event of a wildfire or a significant storm that causes erosion and to ensure physical hazards from structurally unsound, partially demolished buildings do not result in debris falling onto onsite workers. This will be accomplished through the D O E performance of closure activities under an Order on Consent for Interim Response Action at the Radioactive Materials Handling Facility (RMHF) Complex (Order) and its Amendment issued by the DTSC. The Order, as amended, governs D O E’s closure activities that will remove the radiological components and chemical hazardous substances, as well as the physical hazards associated with the eight remaining D O E Area IV buildings and structures. To achieve these goals, D O E will conduct building demolition activities to slab-on-grade under DTSC oversight and will dispose of the resulting building demolition debris at a licensed mixed low-level radioactive waste disposal facility or authorized mixed low-level radioactive waste disposal facility/site located outside the State of California. Disposal will be in accordance with the waste acceptance criteria for the receiving facility, and will be consistent with the waste disposition alternatives described in the 2010 Administrative Order on Consent (2010 AOC) Agreement in Principal. All response actions shall be performed in a manner consistent with the requirements of Chapters 6.8 (commencing with section 25300) and 6.5 (commencing with section 25100) of Division 20 of the Health and Safety Code, and any other applicable state or federal statutes and regulations. See NOE for full details.

Contact Information

Laura Rainey
Agency Name
DTSC Site Mitigation and Restoration Program
Contact Types
Lead/Public Agency

Agency Name
The Department of Energy
Contact Types
Project Applicant


Simi Hills
Other Location Info
Area IV, Santa Susana Field Laboratory, Simi Hills, California

Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
Sec. 21080(b)(4); 15269(b)(c)
Reasons for Exemption
Project consists of specific actions necessary to prevent or mitigate an emergency, determined by DTSC to be, “…an imminent or substantial endangerment to the public health or welfare or to the environment, because of the release or a threatened release of a hazardous substance…” [Health and Safety Code section 25358.3(a)]. See Attachment A for additional information.


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