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Sequoia 684 Chesapeake Drive Redwood City CA 94 (650)364-9600 FAX(690) 364-9Z3 <br /> 404 N Wiget Lane Walnut Creek,CA 9459898 (925)988-9600 FAX(925)988-95773 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> Blaine Tech Services Client Prol ID Shell 8131 Pacific Ave Sampled 02/24/99 <br /> 1880 Rogers Avenue Sample Descript MW-5 Received 02/25/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/10/99 <br /> Atterltlorf-Fran Thle Lab Number-9902075--05Reported 03129199— <br /> QC Batch Number GC031099BTEX30A <br /> Instrument ID GCHP30 <br /> Total Purgeable Petroleum 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) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 78 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> r <br /> T <br /> Project Manager Page 9 <br />