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Sequoia !680 Chesapeake Drive Redwood City,CA 94� (650) 364 9600 FAX(650)364=9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton/971121-G1 Sampled 11/21/97 <br /> 1680 Rogers Avenue Sample Descrlpt MW-3 Received 11/24/97 <br /> - San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/05/97 <br /> ~ Attention Fran Thie Lab Number 9711 E95-03 Reported 01 f 14j98 <br /> QC Batch Number GC120597BTEX21A <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 50 N D <br /> Methyl t-Butyl Ether 25 88 <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) - .- 0 50 .. 1 6 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 96 <br /> I <br /> I <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN L ICAL - ELAP #1210 <br /> • <br /> Peggy Penn <br /> Project Manager Page s <br />