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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> Analytical 819 51riker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916) 0100 <br /> 1455 McDowefl Blvd North Ste D Petaluma.CA 94954 (707) 792-1$65 FAX(707) 79 792-0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-8632/980810-T2 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descrlpt MW-1 Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/20/98 <br /> Attention Fran Thie Lab Number 9808853-01 Reported OBJ31198 <br /> QC Batch Number GC082098STEX17A <br /> Instrument ID GCHP17 <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 50 160 <br /> Methyl t-Butyl Ether 25 59 <br /> Benzene 050 40 <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 1 9 <br /> Xylenes (Total) 0 50 051 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 135 Q <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> go <br /> P Manaryger Page 4 <br />