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1 Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9133 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 %73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 911-9600 FAX(916)911 0100 <br /> i <br /> Blaine Tech Services Client Prol ID _ Shell Stockton/971117-M1 Sampled 11/17/97 <br /> - 1680 Rogers Avenue Sample Descript MW-6 Received 11/26/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method .8015Mod/8020 Analyzed _12/01/97—a, <br /> - Attention Fran Thie Lab Number 97111735-06 _ _ _Reported 12f 11 j97 <br /> QC Batch Number GC120197STEX02A <br /> Instrument 1D GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/L mg/L <br /> TPPH as Gas 0 050 N D <br /> Benzene 000050 N D <br /> Toluene 000050 N D <br /> Ethyl Benzene 000050 N D <br /> Xylenes (Total) 000050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 93 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU41 LYTICAL - ELAP #1210 <br /> Peggy her <br /> Project Manager Page 18 <br />