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IT) 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 /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> G, Blaine Technical Services -- Client Proj ID -Chevron,9-1918,960730-H2 µ Sampled Q8/01/96 <br /> 1985 Timothy Drive Sample Descript MW-11 Received 08/01/96 <br /> San.lose, CA 95133 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/08/96 <br /> Attention_Jim Keller _ Lab Number 9608106-11 - Reported 08J15j96 <br /> QC Batch Number GC080896BTEX18A <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 /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 <br /> Xylenes (Total) 050 N D <br /> ND <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 79 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 461210 <br /> My-Penner <br /> Project Manager <br /> Page i7 <br />