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Tam <br /> Third Quarter 2003 Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#20632 <br /> 4627 Da Vinci Drive <br /> Stockton CA <br /> Welt= tf�l-° <br /> Ele�atlon Date Ben ooe rToluen � en en k 'P_l _ MtB& <br /> {TQC) ¢� P N9 (pg1L L� {f{?J1tr l'� fIL <br /> MWA 08/01/03 <0 50 <0 50 <0 50 <0 50 <50 14 <5 0 <0 50 <0 50 <0 50 01 665 000 -492 <br /> 173 <br /> MW-2 08/01/03 <5 0 <5 0 <5 0 <5 0 <500 2,000 1,800 <5 0 <50 <5 0 01 802 000 -520 <br /> 282 <br /> MW-3 08/01/03 <0 50 <0 50 24 13 750 82 <5 0 <0 50 <0 50 <0 50 01 784 000 -502 <br /> 282 <br /> MW-4R 08/01/03 <50 <50 <50 <50 <5,000 1,300 75,000 <50 <50 <50 02 744 000 -507 <br /> 237 <br /> MW-5 08/01/03 052 <0 50 <0 50 <0 50 <50 80 78 <0 50 <0 50 <0 50 02 765 000 -508 <br /> 2571 <br /> MW-6 08/01/03 <0 50 <0 50 <0 50 <0 50 <50 1 1 <5 0 <0 50 <0 50 <0 50 02 741 000 -503 <br /> 238 <br /> MW-7 08/01/03 <100 <100 <100 <100 <10,000 47,000 38,000 <100 <100 <100 01 794 000 -521 <br /> 2 73 <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tert-amyl-methyl ether pglL=micrograms per liter <br /> MtBE=Methyl-tert-butyl ether DTW=Depth to water mglL=milligrams per liter <br /> TBA=Tert-butanol SPT=Separate-phase hydrocarbon thickness ft=feet <br /> DIPS=Dusopropyl ether WTE=Water table elevation —=Not sampled/not measured <br /> EtBE=Ethyl-tert-butyl ether TOC=Top of casing elevation in feet above mean sea level NIA=Not Applicable <br /> Notes <br /> All samples analyzed using EPA Method 8260B <br /> 7-Elevenl7-1 t Storell4063tTables120632 03-3Q As Page i of 1 <br />