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Sequoia 680 Chesapeake Drive Rcdwood Cuy, CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988%73 <br /> X17 Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(910921 0100• <br /> - Blaine Tech Services Client Prol ID Shell Stockton/980112-H2 Sampled 01/13/98 _ <br /> 1680 Rogers Avenue Sample Descript MW-1 Received 01/14/98 <br /> „ San Jose, CA 95112 Matrix LIQUID <br /> - Analysis Method 8015Mod/8020 Analyzed 01/27/98 <br /> — Attention-FranThie _ _ - Lab Num#ier=98U1694-03_- _ -- -- - - -- - --- - Reported=D f30j98 <br /> GSC Batch-Number GC012798BTEX07A <br /> Instrument ID GCHP7 <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 .. .. 73 <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 /> Trifluorotoluene 70 130 106 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA L ICAL - ELAP #1210 <br /> Peggy er <br /> Project Manager Page 8 <br />