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i • i <br /> Table 1 <br /> Groundwater Elevation Analytical Data(CHEVRON) <br /> Chevron Service Station N9-4275 <br /> 2905 Benjamin Holt Drive <br /> Stockton California <br /> Well Groundwater Depth Ethyl- Xylenes <br /> Well Date Elevation Elevation to Water TPHg Benzene Toluene benzene (total) MTBE <br /> ID Sampled A MSL) (ft MSL) Pt TOC) (u94) No?) NO (u917) NO) (u94) <br /> 09!13!99 <50 <0 5 <05 <05 <05 <2 5 <br /> 12116!99 — <50 <0 5 <05 <05 <05 <2 5 <br /> Trip Blank 12122/99 <50 <0 5 <05 <0 5 <05 <50 <br /> (cont) 03/09/00 <50 <0 5 <05 <0 5 <05 <50 <br /> 06/13100 <50 0 <0 500 <0 500 <0 500 <0 500 <5 00 <br /> j 09/13100 — <50 0 <0 500 <0 500 <0 500 <0 500 <5 00 <br /> 12114/00 — <50 0 <0 500 <0 500 <0 500 <1 50 30 0° <br /> 03102101 (S) — <50 <050 <0 50 <050 <0 50 <2 5 <br /> 03102101$ (K) — <50 <050 <050 <050 <0 50 <050 <br /> 051106x01 <50 <0 50 <0 50 <0 50 <0 50 <050 <br /> 0812Ill01 <50 <0 50 <0 50 <050 <0 50 <050 <br /> 12!05/01 <50 <05 <05 <0 5 <05 <05 <br /> 03/11/02 <50 <br /> 06/07/02 <50 <0 5 <05 <0 5 <05 <0 5 <br /> 09/24/02 <50 <05 <05 <0 5 <05 <2 <br /> 12117102 <50 <05 <0 5 <05 <05 <2 <br /> 03/18/03 <50 <05 <0 5 <05 <0 5 <2 <br /> 06/17/03 — — — <50 <0 5 <0 5 <05 <0 5 <2 <br /> DEFINITIONS <br /> Groundwater monitoring data and laboratory analytical results pnor to June 13 2000 were compiled from reports prepared by Stain Tech Services Inc <br /> (ft)=Feet =Not Measured+Not Analyzed <br /> (MSL)=Mean sea level (D)=Duplicate <br /> TOC=Top of casing (A)=Anomalous <br /> (ugA)=Micrograms per her (S)=Sequoia Analytical <br /> TPHg=Total petroleum hydrocarbons as gasoline (K)=KH Analytical <br /> MTBE=Methyl tertiary butyl ether <br /> NOTES <br /> '=Laboratory report indicates weathered gasoline C6-C12 <br /> P=laboratory report indicates gasoline C6-C12 <br /> =Laboratory report indicates unidentified hydrocarbons C6-C12 <br /> 4=The result for this hydrocarbon is elevated due to the presence of single analyte peak(s)in the quantitation range <br /> a=Laboratory report indicates weathered gasoline <br /> °=Laboratory report indicates sample was reanalyzed on January 2 2001 Mt8E did not confirm Vial did contain headspace <br /> 7.T>*TP4—A w uwUo wNilw.a K*UkO p feverrta of VGE <br /> °=Hydrocarbons were found in the range of gasoline but do not resemble a gasoline imgerpnnt <br /> °=Analysis by EPA Method 6260 <br /> 1 SChevronL942754Penedic M0ndonngkOMRL94275 NF xis 13 of 13 <br />