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,� FR04-General Dynamics-DOWNEY HR +562-904-7524 T-379 P.002/006 F-641 <br /> Departmen of Toxic Substances Control <br /> Edwin F. Lorry, Director <br /> 700 Heinz Avenue, Suite 200 <br /> Berkeley, California 94710-2721 <br /> Hkkox Gray Davis <br /> 8eeratnry Governor <br /> Is Environmental <br /> Agency <br /> C <br /> March 7, 2002 <br /> Dodwell P. DeSilva, Manager <br /> Environmental and Safety <br /> General Dynamics <br /> Ordnance and Tactical Systems Division California, Inc. <br /> (formerly PRIMEX Technologies, Inc.) <br /> 9236 East Hall Road <br /> Downey, California 90241 <br /> Dear Mr. DeSilva: <br /> ADDITIONAL INVESTIGATION WORKPLAN, JANUARY 2002, <br /> GENERAL DYNAMICS, ORDNANCE AND TACTICAL SYSTEMS DIVISION <br /> CALIFORNIA, INC. (FORMERLY KNOWN AS PRIMEX TECHNOLOGIES), 32727 <br /> CORRAL HOLLOW ROAD, TRACY, CALIFORNIA, EPA ID No. CAD 000 626 762 <br /> The Department of Toxic Substances Control (DTSC) has reviewed the above <br /> referenced report which addresses additional investigation requirements for Solid <br /> Waste Management Unit #21 to be carried out as part of the Corrective Measures <br /> Workplan/Remedy selected for your Corral Hollow Road facility. The comments <br /> prepared by DTSC's Geological Services Unit (GSU) are attached. <br /> Based on the comments prepared by GSU, DTSC is approving the your proposed <br /> workplan with amendments as detailed in the attached memorandum. All <br /> recommendations in the memorandum are to be considered required amendments to <br /> the approved workplan. <br /> Please submit the a Additional Investigation Workplan Report detailing the results of the <br /> investigation within 60 days of the date of this letter. <br />