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of the dissolved hydrocarbons is further supported by the relatively consistent gradient direction <br /> and magnitude as presented in Figure 2 During the most recent sampling event on 30 July 2000, <br /> benzene and TPH-g were not detected above reported detection limits MTBE was detected in <br /> wells MW6 and VEW2 at 6 and 21 µg/L, respectively As presented in Table 1, samples from <br /> well MW6 have been analyzed for MTBE during 15 quarterly events since 1996, and MTBE has <br /> only been detected one other time, at 1 2 pg/L <br /> 4.4 WATER WELLS AND SURFACE WATERS SURVEY <br /> 1 An electronic well survey performed in July 2000 by Environmental Data Resources (EDR) <br /> indicates that there are no water supply wells within a 118-mile radius of the site (EDR 2000) <br /> 1 The closest water supply well is %4 mile south-southeast of the site The closest surface water <br /> body to the site is Mormon Slough, located approximately 0 6 miles north of the site Duck <br /> Creek and Homestead Canal are located approximately 1 14 miles south-southeast of the site <br /> ' (EA 1998) A table summarizing the Iocation and direction of wells within a 1-mile radius of the <br /> site is presented as Table 7 The EDR Report is presented as Appendix G and includes a map of <br /> the location of these wells relative to the site <br /> F 1Plo,cc15�701171N[1 Ier11VpTIosui e 1 1(AY0137cneai dog 12 <br />