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ATTACHMENT 1 <br /> STATE O CALIFORNIA ��� GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTRAL VALLEY REGION <br /> 3443 ROUTIER ROAD <br /> SACRAMENTO,CA 95827-3098 <br /> 27 November 1989 <br /> Mr. Ken Billeter D P. <br /> Chevron Pipeline Company OCT 1 8 mn <br /> 2360 Buchanan Road <br /> Pittsburg, CA. 94565 ENVIRUNMEfv !AL HEALTH <br /> PERMIT/SERVICES <br /> CHEVRON PIPELINE LEAK, CITY OF TRACY, SAN JOAQUIN COUNTY <br /> Enclosed are our comments on the subsurface investigation being conducted <br /> at the pipeline leak in the City of Tracy. Your consultant, Western <br /> Geological Resources, Inc. submitted a letter report, to us, on 23 October <br /> 1989 , on the results of the soil vapor survey and well sampling efforts <br /> conducted in May 1989 . This letter report also contained recommendations <br /> on additional field investigations. <br /> As discussed in our comments, we believe it is time to commence the <br /> extraction of ground water from dewatering well DW-1, while the assessment <br /> of the full extent of ground water contamination is proceeding. In <br /> addition, the attached memorandum contains our recommendations on future <br /> site assessment activities. <br /> Please review the enclosed memorandum and submit to us your proposal to <br /> conduct the field investigations necessary to fully characterize the extent <br /> of ground water contamination from the spill, and your plans to extract, <br /> treat (if necessary) , and dispose�rof..ground water from dewatering well <br /> DW-1. This :#roposal should be sub_initted to us by 22 December 1989.` If <br /> you have any stions please contact John J. Tomko at (916) 361-5661. <br /> Anton`> a K.J. Vorster <br /> Senior Engineer <br /> enclosure <br /> cc: Ms. Laurie Cotulla, San Joaquin Local Health District, Stockton <br /> Mr. Bill Silva, City of Tracy, Tracy <br /> Mr. Scott Weber, Western Geologic Resources, San Rafael <br /> O <br />