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Sequoia 680 Chesapeake Drive Redwood Ciry CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ID404 N Wiget Lane Walnut Creek,CA 94598 (915)988-9600 FAX(925)988-9673 <br /> �• 819 Striker Avenue Suite 8 Sacramento CA 95834 (9t6)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 /> Blaine Tech Services Client Prol-ID Chevron 9-4275/99031Q-Z1 Sampled 03/10/99 <br /> 1680 Rogers Avenue Sample Descript MW4 Received 03/11/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/23/99 <br /> Attention Christine Lillie Lab Number 9903653-04 Reported 03J26199 <br /> QC Batch Number GC032399BTEX02A - <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> l Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 57 <br /> Methyl t-Butyl Ether 25 340 <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> _Xylenes (Total) _ _ 050 N D <br /> Chromatogram Pattern <br /> Unidentified HC C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Tri#luorotoluene 70 130 129 <br /> Analytes reported as N D were not presenfabove the stated limit of detection T - <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> *ei Shin <br /> ct Manager Page 4 <br />