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E <br /> KLEINFELDER <br /> The samples collected from wells MW-2 and MW-3 on June 26, 1991, were analyzed for <br /> the same analytes by the California Analytical Laboratory/Enseco. Concentraticans of <br /> gasoline ranged from 4,900 to 38,000 ug/I. BTEX compound were detected in both <br /> samples. The highest concentrations were consistently detected in sample 67713 collected <br /> from MW-2. Benzene was detected in this sample at 13,000 ug/I and gasoline at 38,000 <br /> ug/l. <br /> S it &Mpless <br /> Sample 67511 collected from B-10/MW-1 and sample 67521 collected from B-11/MW-2 <br /> were analyzed for purgeable TPH as gasoline and BTEX compounds. Both samples were <br /> collected at a depth of 31 feet. The analytical results indicated relatively low <br /> concentrations of several BTEX compounds when compared to the concentration detected <br /> in the ground water. Benzene was detected in B-10 at I I ug/kg. Xylenes were detected at <br /> !" 21 and 33 ug/kg in B-10 and B-11, respectively. Concentrations of gasoline were not p <br /> r <br /> detected in either sample. <br /> 4.3 OFFSITE WELL LOCATION SURVEY <br /> Fwd The SJCEHD iii letter dated December 18, 1990 requested that a well location survey be <br /> conducted to locate wells within 2,000 feet of the site which potentially may be affected by <br /> ' the plume of contaminated ground water beneath the NomeIlini site. Kleinfelder reviewed <br /> the California Department of Water Resources(DWR) and conducted a ground survey to <br /> f F locate wells not listed in tl'e DWR files_.Kleinfelder also attempted to review SJCEND file <br /> 1.' of drilling permit applications, but they were not available for review. Eleven welts were <br /> i.; located either in the agencies records or during the ground survey(Table 5). <br /> Fiq, -dO.Mi 'wells tmd one Jr;dLtstna!well rc lotted tsstweeti.1,60I}:to 2,(100 &south of• <br /> F <br /> the ysi; r„lfirerr'.shallow. ribtiitoriiig wells:fin&-une well,of.unknown,purpose;are Iocatefd <br /> near the tn�erSectzan ox ei sh�ng Siregt WINMY It M ;pxoramatz <br /> Y, __... j <br /> t+ llwest if.fihe"site: T,e well locations are summarized on Table 5 and ars, shown <br /> relative to the site on Plate 7. <br /> G <br /> h� <br /> F18-91-62 9 <br /> Copyright 1991 Kleinfelder, Inc. <br />