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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 %00 FAX(925)988 9673 <br /> Iwo- Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792 1865 FAX(707)792 0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-1848/980810-T3 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descript C-1 Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/17/98 <br /> Attention Fran Thie Lab Number 9808758-01 Reported 08125198 <br /> QC Batch Number GCO81798802004A <br /> Instrument ID GC-4 <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 270 <br /> Methyl t-Butyl Ether 25 57 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 15 <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Unidentified HC C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 97 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> r/ <br /> gory <br /> Project Manager Page 1 <br /> 2� <br />