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Former Read Station i�lo 419 0 1 tbruao, i VV4 <br /> California Additional Subsurface Invests atron <br /> Stockton ' <br /> Table 2 - Groundwater Data <br /> GROUNDWATER LEVELS LABORATORY ANALYTICAL DATA <br /> Well No/. Sample Depth Ground- <br /> Elevation/ Date to water TPHg Benzene Toluene Ethyl- Xylenes MTBE DIPE ETBE TAME TBA Meth. Ethan. <br /> Screen Water Elevation benzene <br /> Interval <br /> (feet) (feet) (Ppb) (PPh) (ppb) (PP)) (PPh) (Ppb) (PPh) (Ppb) L(Ppb) (ppb) (ppb) (ppb) <br /> S&6{88') 09/22/98 na na 5,600 100 510 170 920 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 <br /> AS-1 09/30/98 4835 -2751 62,000 14,000 18,000 1,500 7,600 20 <0 50 <0 50 <0 50 70 <50 3,400 <br /> 20841 <br /> 64'-69' <br /> MW-7 09/30/98 4821 -2766 150 <0 50 <0 50 <0 50 <0 50 13 <050 <0 50 <0 50 69 <50 <50 <br /> 20 55' <br /> 411-66' <br /> MW-8 09/30/98 4805 -2767 120 10 <0 50 <0 50 17 2 I <0 50 <0 50 <0 50 l2 <50 <5 0 <br /> 20381 <br /> 4I'-66' <br /> MW-9 09/30/98 4809 -2744 6,900 560' 280 480 1,600 061 <050 <0 50 <050 10 <50 <50 <br /> 20 65' <br /> 41'-66' <br /> MW-10 09/30/98 dry dry ns ns ns ns ns ns ns ns ns ns ns ns <br /> 20 74' 12/11/98 4645 -25 71 140 <-0 S0 <050 -050 078 <0 50 <0 50 <0 50 <0 50 87 <50 <50 <br /> 41'-61' <br /> 3 Pl ld= fotal Petroleum I lydrocarbons as dltsel I PI Ig=1 otal Petroleum I lydrOLarbons a%gasoline M 1131 =methyl tertiary Natyl-ether by LPA method 8260 <br /> DIPE=dr-rsopropvl ether E FBI'=ethyl tertiary N ry]ether TAM[.=tertiary amyl n•,thyl ether <br /> TBA=tertiary bu yl alcohol Meth =methanol Fthan =ethanol <br /> ppb=parts per billion(pg/L) ns=not sampled na=not analysed <br /> 1419-12 rpt <br /> HORIZON ENVIRONMENTAL INC. <br />