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• i i <br /> Table 1 <br /> First Quarter 2003 Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store 921756 <br /> 853 East Yosemite Avenue <br /> Manteca,CA <br /> Well IDI E#hyl- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPS ETBE TAME Notes Oxygen DTW SPT WTE <br /> (TOP) !L /L L L L (fir m feet feet feet <br /> MW-1 03/10/03 <2 0 <2 0 <20 <2 0 <200 790 <20 <2 0 <20 3 3 NIA 08 2069 000 1116 <br /> 3685 <br /> MW-2 03/10/03 <0 50 <0 50 <0 50 <0 50 <50 41 <50 <0 50 <050 <0 50 N/A 29 21 51 000 1621 <br /> 3772 <br /> MW-3 03/10/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <50 <0 50 <0 50 <0 50 N/A 26 2021 000 1610 <br /> 3631 <br /> MW-4 03/10/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <50 <0 50 <050 <0 50 N/A 76 1 1804 000 16 09 <br /> 34131 <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons as gasoline TAME=Tert amyl-methyl ether ug/L=micrograms per liter <br /> MtBE=Methyl-tert-butyl ether DTW=Depth to water mg/L=milligrams per liter <br /> TBA=Tert-butanol SPT=Separate phase hydrocarbon thickness ft=feet <br /> RIPE=Diisoprophyl ether WTE=Water table elevation =Not sampled/not measured <br /> EtBE=Ethyl-tort butyl ether TOC=Top of casing elevation in feet above mean sea level NIA=Not Applicable <br /> Note All samples analyzed using EPA Method 8260B <br /> 7-Elevenl7-11 Store1140631Tables12175603-10 Page i of i <br />