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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9133 <br /> 4D 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 %73 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 01 Do <br /> Blaine Technical-Services « «-Client Prof ID « «Chevron,9-1918,960730-H2 « Sampled 08/-01/96 <br /> 985 Timothy Drive Sample Descnpt MW-4 Received 08/01/96 <br /> San Jose, CA 95133 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/08/96 <br /> Attention__Jiro Keller Lab Number 9B08106-04 <br /> '-- Reported 08j15198 <br /> - -- <br /> QC Batch Number GC080896BTEX07A <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 100 <br /> 310 <br /> Methyl t-Butyl Ether 50 N D <br /> Benzene 1 0 <br /> ND <br /> Toluene 1 0 N D <br /> Ethyl Benzene 1 0 1 2 <br /> Xylenes (Total) 1 0 5.6 <br /> Chromatogram Pattern <br /> Gas & Unidentified HC >C10 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 86 <br /> Analytes reported as N D were not present above the stated fimtt of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> y"Penner <br /> roject Manager Page 9 4 <br />