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Ei <br /> PUBL , HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> JOGI'KHANNA M.D.,M.P.H. <br /> Health Officer i <br /> a C��lFO �`p <br /> P.O. Sox 2009 * (1601 East Hazelton Avenue) 0 Stockton, California 95201 <br /> (209) 468-3400 .. <br /> �r <br /> JUN 17 0 <br /> SOUZA REALTY <br /> 34 E 10TH STREET <br /> t TRACY CA 95376 <br /> d RE: 340 W. Grant Line IN REPLY.REFER TO SITE.CODE: 2107 <br /> ' Tracy, CA i <br /> Groundwater Investigation <br /> Please be advised that we have reviewed the May 22, 1991 Problem Assessment Report. We have also <br /> discussed this report with the:Central Valley Regional Water Quality Control Board (CVRWQCB). . <br /> i 3 <br /> �y <br /> 'I Three monitoring wells were installed and two rounds of water sampling was conducted. All three wells <br /> were found to be non-detectable for hydrocarbon contamination, however, none of the wells were placed <br /> downgradient from the underground fuel storage.tank. The groundwater gradient is to the northeast and <br /> a large building occupies the.site directly north of the former tank excavation and monitoring well #1. <br /> ` Information gained from installing and sampling a downgradient monitoring well is essential in determining ; <br /> the lateral extent of hydrocarbon contamination. <br /> Please submit a work plan to define the extent of hydrocarbon contamination by July 31, 1991. This work <br /> plan should include a diagram showing the Iocation of the product lines and former pump island. <br /> Access agreements may be necessary if the well is to be placed in an off-site Iocation. <br /> I€you have any questions, call Eleanor Ratliff, RENS, of my-staff at (209)468-3454. <br /> a' <br /> Jogi Khanna, M.D. M.P.H. <br /> Health Officer <br /> r <br /> ry , <br /> Laurie A. Cotulla, S;Program Manager <br /> vvlronmentai Health Division ' <br /> i <br /> a LAC/ER:nr <br /> c: CVRWQCB - G. Boggs <br /> c: Weston - RoberrSengebush <br /> .i 83 W. March Lane, Ste. 12 . <br /> Stockton, CA 95207 <br /> A Division of San Joaquin county Health Care Services <br /> Ni <br />