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C=hbd,Cecd*d,and Cdovmurord,Fueling Island <br /> CIL Ground Water IE eV211n®ffi IIDets <br /> Ground water elevations measured in monitoring wells UST-2 through UST-5 on <br /> December 23, 1996 are presented in Table 1. The average depth to ground water (as <br /> measured from the top of casing for each monitoring well) was approximately 65 feet <br /> bgs. The ground water level recorded this quarter has nsen approximately 3 feet since <br /> last quarter. No free product was observed in any of the wells. <br /> Figure 3 - Relative Ground Water Elevations shows ground water flow beneath the site <br /> on December 23, 1996, to be toward the southeast at a gradient of approximately 0.02 <br /> foot per foot (105 feet per mile). The findings are consistent with the data of previous <br /> monitoring events. This flow direction is similar to the regional flow direction <br /> interpreted from San Joaquin County Spring 1995 !Ground Mater Report Maps (San <br /> Joaquin County Flood Control and Nater Conservation District, 1995). <br /> 4.2, Gir®u nd Water AmeyflCaIl IISeZuRts <br /> n The ground water samples collected from monitoring wells UST-2 through UST-5 were <br /> L analyzed at the laboratory for: <br /> o Total Petroleum Hydrocarbons as diesel (TPH-D) using EPA !!Method <br /> 3550/8015 Modified; and <br /> o Total Petroleum Hydrocarbons as gasoline (TPH-G) using EPA Method <br /> 503015015; and <br /> 0 Benzene, Toluene, Etthylbenzene, and Xylenes (BTEX) using EPA Method <br /> 503015020. The trip blank was only analyzed for BTEX. <br /> yti <br /> Anal cal results for wells UST-2 through UST-5 are listed in Table 2 - Summary of <br /> Ground Water Analytical Results. The certified laboratory reports and chain-of-custody <br /> documentation are presented m Appendix B. <br /> f%69254001quiy iptl4qu%rpt 6 FnWrmmaMa Sc once do Fngineering,Inc <br />