SCH Number 2006061050

Project Info

Title

Site 6, T-Range Open Burn Facility, China Lake Naval Air Weapons Station

Description

Site 6, T-Range Open Burn Facility, Remedial Action Plan/Record of Decision. The Department of Toxic Substances Control (DTSC) is proposing to approve the feasibility study and the Navy's preferred remedial alternative for Site 6 (the engineered alternative cap). The selected remedy will be documented in a Record of Decision/Remedial Action Plan. The selected remedy and remedial design will amend the existing approved Closure Plan for the Site 6 T-Range Open Burn facility through a Class 2 modification for the China Lake NAWS hazardous waste facility permit. Approval of the feasibility study and the preferred remedy by DTSC is pursuant to the requirements of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the National Oil and Hazardous Substances Pollution Contingency Plan (NCP), and Chapter 6.8, Division 20 of the California Health and Safety Code. Site 6 served as an open-burn facility from 1946 to 1991 and was operated by the Ordinance Systems Department at NAWS China Lake. Site 6 covers approximately 35 acres of disturbed ground with six distinct disposal areas (Areas 1 through 6) that includes pits, trenches, and aboveground tanks used for open burning of waste. The proposed action for Site 6 consists of capping the contaminants at Areas 1 and 3 in place using an engineered alternative cap. Native soil from the site will be used to construct the cap in place of specialized Site 6 will be consolidated within the partially open trenches at Areas 1 and 3 prior to capping. Land use controls will be put into place which will specify that no buildings or residences can be constructed at the site, and will also identify the need for maintenance of the cap.

2 documents in project