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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 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z1-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (747)792 1865 FAX(707) 792-0342 <br /> Blaine Tech Services --- _ Client Prol ID Chevron 9-4275/980624-J1 Sampled 06/24/98 <br /> 1680 Rogers Avenue Sample Descript MW-6 Received 06/25/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 07/01/98 <br /> Attention Fran Thle Lab Number 9806G68-06 Reported 07f 09j98 <br /> QC Batch Number GC070198STEX21 A - <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 200 2700 <br /> Methyl t-Butyl Ether 10 93 <br /> Benzene 20 19 <br /> Toluene 20 N D <br /> Ethyl Benzene 20 53 <br /> Xylenes (Total) 20 N D <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trifiuorotoluene 70 130 148 Q <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA LYTICAL - ELAP #1210 <br /> ct Manager Page 12 <br />