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` Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> �till7 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> blairie Tech Services Client Prol ID Shell Stockton/980112-H2 Sampled 01/13/98 <br /> 1680 Rogers Avenue Sample Descript RW-2 Received 01/14/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 01/27/98 <br /> Attention Fran Thie ___ _ Lab Number_ 9801694-02 _ Reported 01J30198 <br /> QC Batch-Nilmlier GC0127986TEX17A - <br /> Instrument ID GCHP17 <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 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifiluorotoluene 70 130 87 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN L - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 5 <br />