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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (92S)988-9600 FAX(925)988-9673 <br /> iqW Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> Pacific Environmental Group-Sac Project Chevron 9-9840,Stockton,CA Sampled 9122/98 <br /> 11315 Sunrise Gold Circle St M Project Number 920-122 1 C Received 9122/98 <br /> Rancho Cordova,CA 95742 Project Manager Tim Anenson Reported 9/23/98 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MY-2 Q 85' S809252-114 C�g� <br /> Ethanol 8090214 9/22/98 9/22198 150 ND mg/kg <br /> Tert-butyl alcohol 100 ND " <br /> Methyl tert-butyl ether 0 100 ND <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 100 ND " <br /> Surrogate 1,2-DCA-d4 600-140 115 % <br /> MW-2 fj4 91 112' S809252-15 Sod <br /> Ethanol 8090214 9/22198 9/22/98 150 ND mg/kg <br /> Tert-butyl alcohol 100 ND " <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-isopropyl ether 0 100 ND " <br /> yl tert-butyl ether 0 100 ND " <br /> -amyl methyl ether 0 100 ND " <br /> urrogate 1,2-DCA-d4 600-140 110 % <br /> equoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Inds C Schn der,Laboratory Director Page 3 of 6 <br /> r9% <br />