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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 6) 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(9Z5)988-9673 <br /> Iwo Analytical 819 striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9,21-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> _ Blaine Tech Services ~ ~ ~ ~ Client Prol ID Shell 2575 Country Club Blvd Sampled 07/29/98 <br /> 1680 Rogers Avenue Sample Descript RW-1A Received 07/30/98 <br /> San.dose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/11/98 <br /> Attention Fran Thie ~ ~ Lab Number 98071-188-14 ~ ~ Reported 08J19J98 <br /> QC Batch Number GCO81198BTEX05A ~ ~ ~ <br /> Instrument ID GCHP5 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 100000 N D <br /> Methyl t-Butyl Ether 5000 410000 <br /> Benzene 1000 16000 <br /> Toluene 1000 12000 <br /> Ethyl Benzene 1000 2000 <br /> Xylenes (Total) 1000 12000 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Triffuorotoluene 70 130 73 <br /> 0 <br /> Analytested N D re not present above the stated limit of detection <br /> SEDL ICAL - ELAP #1271 <br /> gy <br /> roject Manager Page 15 <br />