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`1 Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (9Z5)988-9600 FAX(925)988 9673 <br /> fwl>� Analytical 819 Sinker Avenue 5uite 8 Sacramento CA 95 )921 9600 FAX(916)991 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 949544 (707(707) 792 1865 FAX(707)79Z 0342 <br /> 140 <br /> Blaine Tech Services Client Proj ID Chevron 9-8264/980810-T1 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descnpt MW-4 Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/24/98 <br /> Attention Fran The Lab Number 9808910-04 Reported 08131/98 <br /> QC Batch Number GCO82498BTEX21A <br /> Instrument ID GCHP21 <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 50 150 <br /> Methyl t-Butyl Ether 25 1100 <br /> Benzene 050 33 <br /> Toluene 050 17 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 21 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 110 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Valor <br /> r <br /> rojeCtager Page 13 <br />