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S e qu o f r� 819 Striker Avenue,Suite 8 <br /> �.tt Sacramento,CA 95834 <br /> (916) 921-9600 <br /> Analytical <br /> FAX(916) 921-0100 <br /> f� <br /> >vwwsequa3alabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469,Stockton,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number: 5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 05/03/02 15:45 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2040366-EPA 5030E !P/T) <br /> Blank(2040366-BLKI) Prepared&Analyzed:04/29/02 - <br /> Purgeable Hydrocarbons ND 50 ug/]Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 „ <br /> Surrogate:a,a,a-Trifluorotoluene 10.0 10.0 100 60-140 <br /> LCS(2040366-BSI) Prepared&Analyzed:04/29/02 <br /> Benzene 10.8 0.50 ug/] 10.0 108 70-130 <br /> Toluene 9.78 0.50 10.0 97.8 70-130 <br /> -' ylbenzene 9.95 0.50 10.0 99.5 70-130 <br /> ]enes(total) 30.8 0.50 30.0 103' 70-130 <br /> Surrogate:a,ez,a-Tris luorotoluene 10.8 10.0 108 60-140 <br /> Matrix Spike(2040366-MSI) Source: 5204377-07 Prepared&Analyzed: 04/29/02 <br /> Benzene 10.3 0.50 ug/1 10.0 ND 103 -60-140 -- <br /> Toluene 9.27 0.50 10.0 ND 92.7 60-140 <br /> Ethylbenzene 9.24 0.50 10.0 ND 92.4 60-140 <br /> Xylenes(total) 30.0 0.50 30.0 ND 100 60-140 <br /> Surrogate:a,qa-Triuorotoluene 9.64 10.0 96.4 60-140 <br /> Matrix Spike Du (2046366-MSDI) Source: 5204377-07 Prepared&Analyzed: 04/29/02 <br /> Benzene 10.6 0.50 ug/l I ND 106 60-140 2.87 25 <br /> Toluene 9.59 0.50 10.D ND 95.9 60-]40 3.39 25 <br /> I <br /> Ethylbenzene 9.50 0.50. 10.0 ND 95.0 60-140 2.77 25 <br /> Xylenes(total) 30.7 0.50 30,0 ND 102 60-140 2.31 25 <br /> Surrogate. a,a,a-Tris luorotoluene 9.93 10.0 99.3 60-140 <br /> Jequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Page 9 of 14 <br />