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+ Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 404 N Wi&et 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 /> Gettler Ryan/Geostrategies Client Prol ID Chevron 9-6171, Stockton Sampled 11/05/95 <br /> t MW-6 Received 11/07/95 <br /> Sample Descri <br /> 6747 Sierra Court Suite G p p <br /> Dublin, CA 94568 Matrix LIQUID Analyzed 11/08/95 <br /> _ Analysis Method 8015Mod/8020 Reported 1-1J10j95 <br /> Attention Deanna Harding Lab Number 9511461-03 - <br /> QC Batch Number GC110895BTEX22A <br /> Instrument ID GCHP22 <br /> Tota! Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Detection Limit Sample gResults <br /> Analyte ug/t L <br /> 50 160 <br /> TPPH as Gas -- - 050 ND <br /> Benzene 0 50 2 8 <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) <br /> Chromatogram Pattern _ C8-C9 <br /> Discrete Peak <br /> Control limits % % Recovery <br /> Surrogates 70 130 93 <br /> Trifluorotoluene <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Mike Gregory Page 3 <br /> Project Manager <br />