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Table 1 <br /> Groundwater Elevation and Analytical Data(CHEVRON) <br /> Chevron Service Station#9-4275 <br /> • 2905 West Benjamin Hot Drive <br /> Stockton,California <br /> Wall Depth Groundwater Ethyl- Total <br /> Well Date Elevation to Water Elevation TPHg Benzene Toluene benzene Xylenes MtBE <br /> ID Sampled Notes (ft,MSL) (ft,TOC) (ft,MSL} (Ngft-) (Ng1L) (NgfL) (VgfL) (pgfL) (uglL) <br /> DEFINITIONS: <br /> ft=Feet <br /> MSL-Mean sea leve$ <br /> TOC=Top of casing <br /> pglL-Micrograms per liter <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tertiary butyl ether <br /> --=Not measuredlNot analyzed <br /> a=Not detected at or above the laboratory method detection limit <br /> NOTE$: <br /> A-Anomalous <br /> D=Duplicate <br /> K=Kiff Analytical <br /> 5=Sequoia Analytical <br /> 1-Laboratory report indicates weathered gasoline CS-C12- <br /> 2-Laboratory report indicates gasoline CB-C12. <br /> 3-Laboratory report indlcates unidentified hydrocarbons CS-C12, <br /> 4=The result for this hydrocarbon(TPHg)is elevated due to the presence of single analyte peak(s)in the quantitation range, <br /> 5=Laboratory report indicates weathered gasoline. <br /> S-Laboratory report indicates sample was reanalyzed on January 2,2001. MtBE did not confirm. Vial did contain headspace. <br /> 7=The TPHg result was 1400 pglL which was attributed to the presence of MtBE. <br /> 8=Hydrocarbons were found in the range of gasoline,but do not resemble a gasoline fingerprint. <br /> 9-MtBE Analysis by EPA Method 8280, <br /> 1D=Well location not vet surveyed.groundwater elevation could not be calculated. <br /> Groundwater monitoring data and laboratory analytical results prior to Juno 13,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> 11 C h e v ro n594 27 51T a b l a s l94 27 5_O M R_As s <br /> 13 of 13 <br />