Laserfiche WebLink
• <br /> Groundwater Monitoring Data Page 9 of 9 <br /> ARCO Service Station No. 2130 <br /> 7906 North EI Dorado Street, Stockton, California <br /> Well Elevation Static Water Groundwater Ethyl- Total <br /> Nwnber Date Top of Casing Top of Screen Level Elevation TPHG Benzene Toluene benzene Xylene MTBE Observations <br /> VW-7 05/10/97 NM 35 00 45 05 NE 56 06 <0 5 <0 5 0 8 4 No FP,No S <br /> VW-8 05/10/97 NM 4000 4481 NE 25,000 480 290 260 3,900 <120* No FP,No S <br /> VW-12 05/20/97 NM 5500 4378 NE 1,500 150 1 58 <1* <6* No FP,No S <br /> Analytical results in parts per billion(ppb) <br /> easurements in feet <br /> Datum in mean sea level <br /> Static water level measured in feet below top of casing <br /> --=Well not surveyed <br /> =Below detection Irma for the analytic methods used <br /> =Raised method reporting lumt(MRL)due to lugh analyte concentration requiring sample dilution <br /> **=Raised MRI,due to matrix interference <br /> ***=The sample contains discrete non-fuel components eluting in the gasoline range,quantified as gasoline The <br /> chromatogram does not match the typical gasoline fingerprint- <br /> 1 =Not sampled,as well is scheduled to be abandoned <br /> 121=For the 11/19/97 monitoimg event MTBE was also analyzed using USEPA Method 8260;see Table 2. <br /> TB=Trip blank <br /> NE=Not evaluated <br /> FP=Free product. <br /> A=Not analyzed <br /> =Sheen <br /> N\XLSV805V 140"22297M1 XIS <br /> Sheet I <br /> Emcon <br /> 214198 <br />