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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-OtQO <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Blaine Tech Services Client Proj ID Shell, 4445 Pershing, Stockto Sampled 02/11/99 <br /> 1680 Rogers Avenue Sample Descript MW-4 Received 02/12/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 _ Analyzed 02/22/99 <br /> Attention Fran Thle Lab Number 9902697-04 Reported 03101199 <br /> oC Batch Number GCO22299802004A <br /> Instrument ID HP-4 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE - <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 89 <br /> i <br /> r <br /> I <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> Project Manager Page 4 <br />