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/ \ 680 Chesapeake Drive Redwood Qry CA 94063 {650) 364-9600 FAX(650) 364 9233 <br /> Sequoia <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 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 /> Blaine Tech Services Client Proj ID Chevron 9-8632/980810-T2 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descript SUMP Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8020 Analyzed 08/24/98 <br /> Attention Fran Thie Lab Number 9808853-05 Reported 08131198 <br /> OC Batch Number GCO82498STEX21A <br /> Instrument ID GCHP21 <br /> BTEX Distinction <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 105 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ALYTICAL - EE.AP 47210 <br /> ;f <br /> ory <br /> P Manager Page 15 <br />