Hazardous Waste Management Facility


The Hazardous Waste Management Facility (HWMF) was constructed to treat and store reactive metallic wastes regulated by the California Department of Toxic Substances Control (DTSC) under the Resource Conservation and Recovery Act (RCRA). Operations began under the RCRA permit in 1978 and entered regulatory closure in 1998.  The Department of Energy (DOE) is owner and co-operator of the facility.

The HWMF consists of two buildings. Building 4133 was used to treat and store waste while 4029 was used to only store waste.  The HWMF operated under a RCRA permit for treatment and storage of reactive wastes. In December of 2006, DTSC approved the RCRA Closure Plan for HWMF.


Building 4133 was used for the treatment of liquid metal components and liquid metal waste.  It not operated as a radiological facility.  However the “burn room” was originally located at the SRE complex and known as building T724.  In 1977 it was surveyed to verify that it contained no residual contamination above regulatory limits.  It was then relocated to the site of the new Building 4133. 

In 1999 Boeing performed a radiological survey of the entire 4133 facility.  Subsequently the Oak Ridge Institute of Science and Education (ORISE) performed a verification survey.  Also the California Department of Health Services (DHS) performed a verification survey.  All three surveys confirmed that the facility met the State and Federal standards for release for unrestricted use.  In March 2007, the DHS wrote a letter to Boeing confirming that building 4133 structures were suitable for release for unrestricted use.  Consequently, the building debris from the demolition of 4133 will be managed as decommissioned material and disposed of to a Class 1 hazardous waste disposal facility. 

Implementation of the Closure Plan involves facility demolition and management of demolition debris followed by sampling of the underlying soils.

In December 2006, DTSC approved a modified Closure Plan for HWMF. Closure involves the cleanup and demolition of both buildings, followed by soil sampling to determine if a chemical release has occurred.

Historical Site Assessment - 4133