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. Historical Groundwater Monitoring Data <br /> (9127199 through 3/27106) <br /> DATE DTW ELEV B T E X MTBE TPH-G OXYGENATESIADDITIVES <br /> Detection Llmits- 0.5 0.5 0,5 1.0 0.5 0.05 0.5-5.0 <br /> ttg/L IIg/L Ng/L pg/L {184- mg/L Pg/L <br /> Analytical Methods-> 82608f 826013t 826013t 826013t 8260Bt 8015M#• 82601 <br /> Monitoring Well& <br /> levan n <br /> EW-1 (36.23##) 1013012003 E><tractlon Well EW-1 Installed <br /> 11126/2003 24.11 1 12,12 NA NA NA NA 230 NA NA <br /> 12/31/2003 21.91 14.32 10.5 103 <0,5 <Lo 36 <0.05 <0.5-<5.0 <br /> 3/4/2004 20.12 16,11 <0.5 10.5 <0.5 <1,0 53 <0.05 10.5-<5.0 <br /> 6/24/2004 23.79 12.44 <0.5 <0.5 <0.5 <1.0 10,5 <0.05 <0.5-<5.0 <br /> 9/2812004 25.55 10.68 10.5 <0.5 <0.5 <1.0 90 <0.05 <05-<5.0 <br /> 12129/2004 21.15 15.09 <0.5 10.5 <0.5 <1.0 58 <0.05 10.5-<5.0 <br /> 3/2712005 18.07 18.16 <0.5 <0.$ <0.5 <I.0 150 <0.05 <0.5-<5,0 <br /> 6/30/2005 19.17 17.06 <0.5 -0.5 <0.5 <1.0 <0.5 <0.05 <0.5-<5.0 <br /> 9/3012005 19.84 16.39 <0.5 <0.5 <0.5 <1.0 1 <0.05 <0.5-<5.0 <br /> 128812005 18.01 18.22 <0.5 10.5 <0.5 <1.0 25 10.05 <0.5-<5.0 <br /> 3/2712006 15.76 20.47 <0.5 <0.5 <0.5 <1.0 23 <0.05 <0.5-<5.0 <br /> 9127199 through 9127101 Groundwater Data Collected by Olhm. A11ab2ical, <br /> DTW-Depth to water in feet below top of ces-sng. B,T,E,X=benzene,toluene,ethyl benzene,and total xylenes. <br /> ELEV=Groundwater elevation in feet above mean sea level. TPH-G-total pelrolcum hydrocarbons,quantified as gasoline. <br /> •=Well collar elevation resurveyed on September 30,2002,relative MTBE-methyl tertiary-butyl ether. <br /> to NAVD 88 datum. Oxygenates/additives include:ethanol(£tOH).tertiary-butanol(TEA), <br /> ♦1= <br /> Well collar elevation surveyed on November 5.2001,relative di-isopropyl ether(DIPE),ethyl tertiary-butyl ether(ETBE),1Miary-amyl methyl <br /> to NAV D 88 datum. ether(TAME),1,2-dibromoethane(EDE),and 1,2-dichloroethane(1.2-DCA). <br /> •=Well purged dry. NA-not analyzed. <br /> ND-not detected. <br /> NM=not measured. <br /> NS=not sampled. <br /> Unit Conversiotm pg/L:taicrograms per liter-parts per billion(ppb) t=BTEX constituents collated prior to 9126102 were analyzed by EPA Method 8021 B. <br /> mg/L:milligrams per liter=parts per million(ppm) j-Samples collated prior to 9/26102 were analyzed for TPH-G by EPA Method 5030/Luft <br /> •=Samples collected post 12/27/02 were analyzed for TPH-G by EPA Method 80156. <br /> • <br /> P:1300o-pq,3761 Boyelt Manteca13761 C Boyett Manteca Groundwater MonitoringlReportV 0061Historical Deta.xls <br />