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Sequoia 680 Chesapeake Drive Rcdwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(5 i0) 988%73 <br /> Analytical a 19 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine-Tech-Services Client Prod ID Shell Stockton/971202-Li Sampled 12/02/97 <br /> 1680 Rogers Avenue Sample Descript MW-7 Received 12/03/97 <br /> - San Jose, CA 95112 Matrix LIQUID <br /> —n Analysis Method=8015Mod/8020 Analyzed_12/_16/97- <br /> Attention Fran Thie Lab Number 9712358-09 Reported 12f 19/97 <br /> QC Batch Number G(5121697BTEX02Ai - <br /> Instrument ID GCHP2 <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 25 <br /> Benzene 0 50 11 <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total} 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 85 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA AN ICAL - ELAP #1210 <br /> i <br /> Peggy P er <br /> Project Manager Page 27 <br />