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Sequoia 680 Chesapeake Drive Redwood GM CA 94063 (650) 364-9600 FAX(650)364 9233- <br /> 404N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> SII,# Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(9t6)321-0100' <br /> Blaine Tech Services Cllent-Prof ID Shell Stockton/980112-H2 Sampled 01%13/98 if <br /> 1680 Rogers Avenue Sample Descrlpt VEW-4 Received 01/14/98 - <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed <br /> _0i/27/98 <br /> — ' Attention Fran Thle Lali Number _98011 695=1 1 _ _ Reported_ 011130198-y <br /> OC Batch Number GC012798BTEX07A r <br /> Instrument ID GCHP07 <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 2.5 . .. .... .... 2.6 <br /> Benzene 0.50 ... ... 1 1 <br /> Toluene - - - 0.50 - - - - --- 064 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 .. 20 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 92 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A-- 7 AL - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 6 <br />