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4 <br /> ' 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 /> �I Analytical 819 Striker Avenuc,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Blaine Tech Services » Client Proj ID Shell Stockton/970610-Z4 Sampled 06/10/97 , <br /> 1680 Rogers Avenue Sample Descrlpt MW-2 Received 06/11/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed'06/16/97 <br /> Attention Fran Th1e Lab Number 9706578-02 _ « Reported 06119/97 <br /> QC Batch Number GC061697BTEX18A <br /> Instrument ID GCHP18 <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 <br /> 50 N D <br /> Methyl t-Butyl Ether 25 ••• -- - - 56 <br /> Benzene 0 50 ND <br /> Toluene 0 50 ND <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Tri rotoluene 70 130 100 <br /> i <br /> Analytes reported as were not present above the stated limit of detection <br /> SEQ I A A YTICAL - ELAP #1210 <br /> Pe99Y er <br /> Project Manager Page 2 <br />