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•, Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 41) 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> 41;W Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Enviros, Inc Client Project ID Shell,620 Charter Way,Stockton,CA Sampled Aug 14, 1996 <br /> P 0 Box 259 Sample Matrix Air Received Aug 15, 1996 <br /> Sonoma, CA 95476-0259 Analysis Method EPA 5030/8015/8020 Reported Aug 20, 1996 <br /> Attention Matt Donohue First Sample # 608-0569 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit I D l D <br /> ppmv 608-0569 608-0570 <br /> Effluent Air Influent Air <br /> Purgeable <br /> Hydrocarbons 14 17 34 <br /> Benzene 0 016 N D 0 21 <br /> Toluene 0 013 0 022 019 <br /> Ethyl Benzene 0012 N D D 23 1#I fC J 1996 <br /> Total Xylenes 0 012 0 015 030 <br /> Chromatogram Pattern Cs-C12 C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 <br /> Date Analyzed 08/16/96 08/16/96 <br /> Instrument Identification GCHP-7 GCHP-7 <br /> Surrogate Recovery, % 86 97 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> 0 SEQUOIA ANALYTICAL, ELAP#1624 <br /> Linda C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 6080569 ENV <1> <br />