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(D Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Cane Walnut Creek CA 94598 (510) 988 9600 FAX(51O)988 9673 <br /> wllr Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> eouchstone Developments Client project Ib Chevron #9-8264 Sampled Nov 15, 1995 <br /> P O Box 2554 Sample Matrix Water Received Nov 15, 1995 <br /> Santa Rosa, CA 95405 Analysis Method EPA 5030/8015 Mod /8020 Reported Nov 16, 1995 <br /> Attention Jeff Monroe First Sample # 511-1237 <br /> QC Batch Number GC111595 GC111595 GC111595 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D I D <br /> erg/L 511-1237 511-1238 511-1239 <br /> TXH2O Baker H2O CH2O <br /> Purgeable <br /> Hydrocarbons 50 300 280 N D <br /> Benzene 050 14 10 N D <br /> Toluene 050 13 92 N D <br /> Ethyl Benzene 050 75 46 N D <br /> Total Xylenes 050 54 41 N D <br /> Chromatogram Pattern Gasoline Gasoline -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 40 5 0 10 <br /> Date Analyzed 11/15/95 11/15/95 11/15/95 <br /> Instrument Identification HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 97 100 93 <br /> (QC Limits = 70-130%) <br /> i <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> I <br /> UOIA ANALYTICAL, #1271 <br /> Ke Imer <br /> Proje t Manager <br /> 5111237 TTT <17 <br />