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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> ri 404 N.Wiget Cane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Ai laCa� - 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.Ot00 <br /> it <br /> Brown and Caldwell(Sacramento client Project ID: Arco#2093,'Tracy Sampled: Mar i4 1997:; <br /> 9616 Micron Ave., Ste. 600 Sample Matrix: Water Ij Received: Mar 17, 199T ` <br /> Sacramento, CA 95827 Analysis Method: EPA 5030/8015 Mod./8020 Reported: Mar 27, 1997:`, ` <br /> Attention: Steve Misner First Sample# 703-1527 I <br /> :::.:.:..:::.:...: .: ..: ..:::....... :::.:. I <br /> :. :>: - <br /> OC Batch Number: GC032697 00032697 i� GCO32697 GCb32697 GC032597 GCO32597 s <br /> 802005A 802005A �' 802005A 802005A 802002A 802002A <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D. <br /> ,ug/L 703-1527 703-1528 703-1529 703-1530 703-1531 703-1532 <br /> ATR-9 ATR-12 i� ATR-11 ATR-1 ATR-7 ATR-2 <br /> Purgeable <br /> Hydrocarbons 50 N.D. N.D. N.D. N.D. N.D. N.D. <br /> '•i <br /> Benzene 0.50 N.D. N.D. N.D. N.D. N.D. N.D. <br /> Toluene 0.50 N.D. N.D. N.D. N.D. N.D. N.D. <br /> Ethyl Benzene 0.50 N.D. N.D. N.D. N.D. N.D. N.D. <br /> i Total Xylenes 0.50 N.D. N.D. N.D. N.D. N.D. N.D. <br /> MTBE 2.5 6.3 280 <br /> Chromatogram Pattern: <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0 <br /> Date Analyzed: 3/26/97 3/26/97 3/26/97 3/26/97 3/25/97 3/25/97 <br /> Instrument Identification: HP-5 HP-5 HP-5 HP-5 HP-2 HP-2 <br /> Surrogate Recovery, %: 114 112 ' 114 126 87 87 I <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. <br /> Analytes reported as N.O.were not detected above the stated reporting limit. 11 <br /> 1 <br /> i <br /> SEQUOIA ANALYTICAL,#1271 <br /> Q- 1{l <br /> Melissa A. Brewer <br /> Client Services Representative <br /> 7031527.BRS <1> <br />