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Table 1 <br /> Groundwater Elevation and Analytical Data(CHEVRON) <br /> Chevron Service Station#94275 <br /> 2905 West Benjamin Holt Dnve <br /> Stockton California <br /> Well _ eptR Groundwater Ethyl-_ Total <br /> Well Date t Elevation to Water Elevation TPHg Benzene Toluene _ benzene, - XylenesMtBE- <br /> IU Sampled Notes (tt,MSL) (ft,TUC) (tt,MSL) (p911L) - (pg/Ll (pg1L), _(11g1L) y(p91L) Y` '(pg1L) <br /> GM-8 04/01/97 — 1045 — 4,900 44 39 120 100 11 <br /> GM-9 04/01/97 — 1060 — 24,000 340 18 130 340 110 <br /> DEFINITIONS <br /> ft=Feet <br /> MSL=Mean sea level <br /> FOC=Top of casing <br /> pg1L=Micrograms per liter <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tertiary butyl ether <br /> —=Not measured/Not analyzed <br /> <=Not detected at or above the laboratory method detection limit <br /> NOTES <br /> A=Anomalous <br /> D=Duplicate <br /> K=Kiff Analytical <br /> S=Sequoia Analytical <br /> 1=Laboratory report indicates weathered gasoline C6-C12 <br /> 2=Laboratory report indicates gasoline C6-C12 <br /> 3=Laboratory report indicates unidentified hydrocarbons C6-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 /> 6=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 pgIL which was attnbuted 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 8260 <br /> 10=Well location not yet surveyed groundwater elevation could not be calculated <br /> Groundwater mondonng data and laboratory analytical results pnor to June 13 2000 were compiled from reports prepared by Blaine Tech Services Inc <br /> 94275_QMR-Tables 1&3 Page 21 of 21 SECOR <br />