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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 4D 404 N Wiget lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> S' 8119 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 /> Blaine Tech Services Client Prot ID Chevron 9-4275/990310-Z1 Sampled 03/10/99 <br /> 1680 Rogers Avenue Sample Descrlpt MW3 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 9903653-03 Reported 03J26J99 <br /> QC Batch Number GC032399STEX03A <br /> Instrument ID GCHP03 <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 37 <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 70 130 125 <br />"�—Analytes reported as N 0 were not present above the stated limit of detection - <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1Cox-t'L-. _r ..LI '1 <br /> ect Shin <br /> P ect Manag Page 3 <br />