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+l Sequoia 680 Chesapeake Drive Redwood Cary CA 94063 (650) 364-9600 FAX(650) 364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> frill>7 Analytical 819 Straker Avenue Suite B Sacramento CA 95834 i9E6}921-9600 FAX(916}921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 79Z 1865 FAX(707 792 0342 <br /> Blaine Tech Services Client Pro} ID Chevron 9-8264/980810-T1 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descript MW-3 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 9808910-03 Reported 08J31/98 <br /> QC Batch Number GCO82098BTEX02A <br /> Instrument ID GCHP2 <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 77 <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 87 <br /> 0 <br /> Analytes reported as N D were not present above the stated hrnit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> gory <br /> Pect Manager Page 10 <br />