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41) Sequoia 680 Chesapeake Dnve Redwood Gty CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N V(rget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-%73 <br /> flub Analytical 8t9 Sinker Avenue Swte 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> *own and Caldwell }nvt AVY "` Vv ` Cli nfProject ID Arco #2093, Tracy Sampled Jun' 4, 1997 <br /> 616 Micron Ave, Ste 600 Sample Matrix Water Received Jun 5, 1997 <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8015 Mod/8020 Reported Jun 19, 1997 <br /> A Attention Steve Misner First Sample# 706-0715 <br /> ..v v 0.:{}:.${:.{Sn n wry l u � ..';)'`" n ✓G.A3"r ,. , vp u...r .}•ry t. y ^ ♦ r <br /> QC Batch Nurnber GCO61797 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with STEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit I D. <br /> Mcg/L 706-0715 <br /> ATR-8 <br /> Purgeable <br /> Hydrocarbons 50 1,200 <br /> Benzene 0 50 42 <br /> Toluene 050 52 <br /> Ethyl Benzene 050 82 <br /> Wotal Xylenes 0 50 150 <br /> MTBE 25 N D <br /> Chromatogram Pattern Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 <br /> Date Analyzed 6/17/97 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % 89 <br /> (OC Limits = 70-130%) <br /> Purgeabie Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 <br /> Melissa A Brewer <br /> Client Services Representative <br /> 7060709 BBS <2> <br />