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819 Striker Avenue,Suite 8 <br /> S e qu o 1 a Sacramento CA 95834 <br /> 4 9—!D— (916)921-9600 <br /> OW Analytical www `416'921�'� <br /> sequolalabs corn. <br /> Stratus Environmental Project ARCO 2186,Stockton,CA Sampled 9/18/00 <br /> 3330 Cameron Park Drive, Ste 550 Project Number N/A Received 9/18100 <br /> Cameron Park,CA 95682 Project Manager Gown Kowtha Reported 1012100 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE in Air(ppmv) by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> VWIA Inf Air(1045) 5009233-01 Air <br /> Purgeable Hydrocarbons 0090231 9/21/00 9121/00 240 926 ppmv 1,D <br /> Benzene 1 60 18 6 D <br /> Toluene 1 30 186 D <br /> Ethylbenzene 1 20 13 2 D <br /> Xylenes(total) 120 83 4 D <br /> Methyl tert-butyl ether 14 0 111 D <br /> Surrogate a a a-Trtfluorotoluene 600-140 102 % <br /> VW1A EffAir(1046) S009233-02 Air <br /> Purgeable Hydrocarbons 0090231 9/21100 9/21/00 240 ND ppmv <br /> Benzene 00160 ND " <br /> Toluene 00130 00600 " <br /> benzene f1 00120 00460 " <br /> es(total) 00120 0 242 " <br /> yl tent-butyl ether 0 140 ND <br /> Surrogate a a a-Trifluorotoluene 600-140 940 % <br /> VW1A InfAir(1300) 5009233-03 Air <br /> Purgeable Hydrocarbons 0090231 9/21/00 9121/00 120 1060 ppmv 1,13 <br /> Benzene 0 800 23 9 D <br /> Toluene 0 650 28 5 D <br /> Ethylbenzene 0 600 170 D <br /> Xylenes(total) 0 600 109 D <br /> Methyl tert-butyl ether 700 105 D <br /> Surrogate a a a-Triuorotoluene 600-140 107 % <br /> i} <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 3 of 6 <br />