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1 , <br /> e 819'Striker Avenue,Suite 8 <br /> S e qu®ia Sacramento.CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> n6.Ra lytica FAX(91 G)921-0100 <br /> wwwsequoialabs.com <br /> fir.+ i <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 6100,Tracy,CA <br /> s, <br /> + 3330 Cameron Park Dr. Ste 550 Project Number: NIA Repurted: <br /> Cameron Park CA,95682 1 Project Manager: Jay Johnson 09/17/01 14:42 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control - <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Anatyte ; Result Limit Units Level Result %RFC Limits RPD Limit Notes <br /> 9 <br /> Batch 1090137- EPA 5036B (MeOH) <br /> Blank(1090_137-BLKI) Prepared&Analyzed: 09/12/01 <br /> Purgeable Hydrocarbons ND 5.0 mg/kg <br /> Benzene y ND 0.025 <br /> Toluene ND 0.025 <br /> Ethylbenzene ND 0.025 " <br /> Xylenes(total) ND 0.025 " <br /> - ------ _--- ---- - - - - - --- - <br /> Surrogale:a,a.a-Trifluorotoluene' 1.08 1.00 108 60-140 <br /> LCS(1090137-BSI) -- - Prepared&Analyzed: 09/12/01 <br /> i Benzene 1.03 0.025 mg/kg 1.00 103 70-130 <br /> Toluene 1.03 0.025 1.00 103 70-130 <br /> Ethylbenzene 0991 0.025, 1.00 99.1 70-130 <br /> eves(total) 2.78 0.025 3.00 92.7 70-130 <br /> Surrogate:a,a,a-Triuorotoluene 1.17 1-00 117 60-140 <br /> 1 <br /> Matrix Spike(1090137-MSL) _ _ _ Source: S109122-01 Prepared&Analyzed:09/12/01 <br /> Benzene _ 0-895 0.025 mg/kg 1.00 ND 89.5 60-140 <br /> Toluene 0.925 0.025 1.00 ND 92.5 60-140 <br /> Ethylbenzene 0.898 0.025 1.00 ND 89.8 60-140 <br /> Xylenes(total) 2.53 0.025 3.00 ND 84.3 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene' -� 1.14 - 1.00 114 60-140 <br /> j <br /> Matrix Spike Dup(1090137-MSD1) _ Source:5109122-01 Prepared&Analyzed:09/12/01 _ <br /> Benzene 0.880 0.025 mg/kg 1.00 ND 88.0 60-140 1.59 25 <br /> Toluene 0.915 0.025 1.00 ND 91-5 60-140 1,09 25 <br /> !!f Ethylbenzene 0.891 0.025 1.00 ND 89.1 60-140 0.783 25 <br /> 1 Xylenes(total) ' 2.49 0.025 3.00 ND 83.0 60-140 1.59 25 <br /> r <br /> Surrogale:a,a,a-Tris luorotoluene 1,19 1.00 119 60-140 <br /> t r <br /> i <br /> i <br /> L <br /> i <br /> ;quOla Analytical - sacram Brlto The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical reporf must be reproduced in its entirety. <br /> i <br /> i Page 5 of 7 <br />