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Sequoia 680 Chesapeake Dnve Redwood City Ca 94063 (415) 364-9600 FAX(415) 364-9133 <br /> ,!D404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> I&W Analytical 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> . Y n . �v,. ry , . A -6fie .; fivv,yt <br /> M1S <br /> wn and CaidwelI —6fient Project Id Arco #2093, Yracy Y nkN' "' A. Sampled .tun'4,Y1997{' <br /> 16 Micron Ave , Ste 600 Sample Matnx Water Received Jun 5, 1997,, <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 19, 1997, <br /> Attention Steve Misner First Sample # 706-0709 <br /> .-{ iv .k �i " n t Lv4 O f1 t }� ] ^. ♦ { ry 1 ry h t ` Y r ,vn\•n 1 4�Y �..1..�}4 .' Y.n N <br /> OC Batch Number GCO61397 GCO61397 h GCO61397 GC-061397 GCO61397 GC061397 <br /> 802W2A 802W2A 802002A 802W2A 802002A 802W2A <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 /> jig/L 706-0709 706-0710 706-0711 706-0712 706-0713 706-0714 <br /> ATR-12 ATR-7 ATR-2 ATR-5 ATR-4 SMW-1 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 97 420 520 <br /> Benzene 0 50 N D N D 0 64 2 7 8 7 36 <br /> Toluene 0 50 N D N D N D N D 1 4 3 1 <br /> Ethyl Benzene 0 50 N D N D N D N D 1 2 1 4 <br /> Dotal Xylenes 050 N D N D N D N D 1 3 1 5 <br /> MTBE 2 5 N D N D 480 N D 54 47 <br /> Chromatogram Pattern -- -- -- Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 2 0 1 0 <br /> Date Analyzed 6/16/97 6/16/97 6/16/97 6/16/97 6/16/97 6/16/97 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 84 82 78 88 79 95 <br /> (OC Limits = 70-130%) <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 /> SEQUOIA ANALYTICAL, #1271 <br /> a - <br /> Mclissa A. Brewer <br /> Client Services Representative <br /> 7060709 BRS <1> <br />