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�F_ <br /> INVOnMTM FOULTS F93OU <br /> F,�WNE I SLIS, <br /> 1605 5�ujn Ej 510@kt"- <br /> n W ter Conditions <br /> 3.1—GLOSO—WkIffir of the depths-to-g,oundwater <br /> 1 Aegis personnel collected measurements easurements, <br /> Oil July 11, 199 , On the basis of the m <br /> wells MW-1, MW-2, and MW-3 (Table 2). ion (Figure 3) at an average <br /> 1A in estimated to flow to the southeast direct rface map of the <br /> undwater is is a potentiometric su, <br /> g"'u of approximately 0.0006 ft/ft. Figure 3 <br /> gradient 1991. <br /> earing zone or,July 11 <br /> shallow water-b <br /> M the, referenced wellhead <br /> asurements were made fro <br /> Groundwater el8v8ti0rI ma e.11 i-joations are based on <br /> easured to the nearest 0.01 foot- The w -� rtheast corner <br /> elevations, M usu mark in the sidevialk on the no <br /> asured from a chiseled*pl g of Stockton, California. <br /> coordinates me ng Engineerin <br /> wells were surjeyed by Wo <br /> Of the site. The <br /> 3.4_Groundwater SIM lin <br /> )I and delivered <br /> SonJuly`11,19E <br /> from the three purged weM i for <br /> were collected enicia, California, <br /> Water samples oast-to-Coast Analytical Services in B <br /> under chain-of-CustOdY to C TPPH as gasoline, BTEX, EDB, EDC by CAL <br /> i analyzed for <br /> Tha samples were od ap4o/8260 and total lead by EPA <br /> analyses and EPA meth s are located <br /> DHS (TPH draft method) n-of-cu5tOdY form <br /> The laboratory results reports and chat <br /> method 7421. <br /> �A <br /> in Appendix 13. <br /> gil ResUlts: Soil <br /> 3.5 AnaltIcal <br /> ted from MWA through MW_3 were delivered <br /> il samples callec alysis of all soil boring and soil <br /> -seven so <br /> Nine of the twenty Laboratory am <br /> to oa�sj_t6_Coast Analytical for analyses [s gasoline below <br /> C ntrations of STEX, EDC,EDB, and TPPH 8 <br /> pile sa-,nples indicated conce E.MW-3 at 20.5 feet which indicated toluene <br /> its except for sample <br /> suits for the soil pile sample were also <br /> method detection lim <br /> ie organic lead re at the air/water interface in <br /> ,nes at 0.01 PPM- Tt a Was ' as <br /> taken <br /> and total xYl( t cfL n limits. One soil sampl r the soil samP1 <br /> below Method de a 0 arizes the analytical laboratory results to <br /> able 3 sumM <br /> each well. T <br /> c acted. <br /> Its' Groundwater <br /> 3.6 Anal lcal as for <br /> .1 reported below 6stection limit <br /> analysis of monitoring well MW Itoring well <br /> Laboratory 'PPH as gasoline, and total lead. Mon <br /> ( EDC, ED13,-1 ants analyzed except <br /> ns of BTE) <br /> concentratiO ction limit for concentrations of constiftil <br /> j below date at 14b ppb. Monitoring wall <br /> T", MW-2 reportec (ppb) and TPPH as gasoline total xylenes at <br /> 0 5 parts-pbr-billior a at 9.0 ppb,10�Uena at 1.5 ppb, <br /> nzene at <br /> be Is of benzer Dw detection I.irrift for <br /> -3 reports con&entraflor. ppb. Total lead was beli . analytical results. <br /> MW )line at 94010 <br /> and TPPH as gas( summarization of <br /> 79.0 ppb, o Table 3 for <br /> the throa groundwater samples. Refer t zene in groundwater. <br /> ben <br /> a-distribution-MaP-Of TP�j as gasoline and <br /> -4-is <br /> Figure <br /> tj <br /> imo"&WT <br />