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Civic Center Square <br /> 2444 Main Street, Suite 215 w <br /> Fresno, California 93 721-2 734 <br /> [209] 264-2535 - FAX[209] 264-7431 OEOMATRIX <br /> 1 November 1991 <br /> Project C1951 <br /> Ms. Jean McCue 04 ^^1 <br /> Regional Water Quality Control Board " <br /> 3443 Routier Road, Suite A ,J=�C�MEN1 Al HEATH <br /> Sacramento, California 95827-3098 PERMIT <br /> /SERVICES <br /> Subject: Geotechnical Investigation <br /> Lots 8S and 9S, Stonebridge Industrial Park <br /> Tracy, San Joaquin County, California <br /> Dear Ms. McCue: <br /> As we have discussed, our client, U. S. Cold Storage is considering purchasing property in Tracy, <br /> California to construct a cold storage warehouse. We have installed three temporary monitoring <br /> wells on Lots 9S and 10S as shown on Figure 1. Groundwater samples obtained from wells B-1 <br /> and B-3 contained 0.5 and 0.7 ppb of 1,1-dichloroethane (1,1-DCA). Available information <br /> indicates that the site is located at the edge of a 1,1-DCA plume extending from the Southern <br /> Pacific Rail Yard. <br /> Our client has requested that we perform a geotechnical engineering investigation of Lots 8S, 9S, <br /> and the northern portion of 10S. The property will become revised Lots 8S and 9S. Figure 1 <br /> shows the location of the proposed building and the proposed geotechnical borings. <br /> We understand that the San Joaquin County Environmental Health Department will not issue us <br /> a permit to perform the geotechnical borings until approval is granted by the Regional Water <br /> Quality Control Board. Please provide San Joaquin County with your written approval as soon <br /> as possible; our client is anxious to proceed with the geotechnical investigation in order to reach <br /> a decision on purchasing the property. <br /> Please contact the undersigned if you have questions. Your cooperation in this matter is <br /> appreciated. <br /> Sincerely Xours, <br /> GEO CO T <br /> oward D. arlow, P.E. <br /> Senior Project Engineer <br /> Attachments: Figure 1 - Boring Location Plan <br /> cc: Chuck Toogood, U.S. Cold Storage <br /> John Mengshol, Thomas, Snell, et al. <br /> Ray Borges, San Joaquin Environmental Health, Unit 2 <br /> Mike Infurna, San Joaquin Environmental Health, Unit 4 <br /> Geomatrix Consultants, Inc. <br /> Engineers, Geologists,and Environmental Scientists <br />