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0Chesapeake pnve Redwood City,CA 9406 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia �4 N Wiget Lane Walnut Creek,CA 945 9, <br /> 988 9600 FAX(510)988-%73 <br /> Analytical 8 t 9 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> ,= Blaine Tech Services - Client Prol ID Shell Stocko-n/971121-G 1 Sampled 11/21/97 <br /> _ 1680 Rogers Avenue Sample Descript EB 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 9711E95-04 Reported 01114198 <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 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 83 <br /> 10 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ALYTICAL - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 12 <br />