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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Blaine Tech Services Client Prod ID Shell Tracy/970605-K2 Sampled 06/05/97 <br /> 1680 Rogers Avenue Sample Descript MW3A Received 06/06/97 <br /> San.dose, CA 95112 Matrix LICUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/11/97 <br /> Attention Fran Thie Lab Number 9706470-03 Reported 06f 16J97 <br />!C Batch Number GC061197BTEX06A <br /> istrument ID GCHP06 <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 050 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 94 <br /> • <br /> analytes reported as were not present above the stated limit of detection <br /> SEQUOIA AL ICAL - ELAP #1210 <br /> 3eggy Penn <br />'rolect Manager Page 3 <br />