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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical wFA92'-°'°° <br /> ww.secluoisequalabs.cnm <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469, Stockton,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number: N/A Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 06/15/01 18:23 <br /> Total Purgeable Hydrocarbons (C6-Cl2) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source I/oREC RPD <br /> Analyte Result Limit ]Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1F12004-EPA 5030B [P/TJ <br /> Blank(1F12004-BLKI) Prepared&Analyzed:06/12/01 <br /> Purgeable Hydrocarbons ND 1.0 mg/kg <br /> Benzene ND 0.0050 " <br /> Toluene ND 0.0050 " <br /> Ethylbenzene ND 0.0050 " <br /> Xylenes(total) ND 0.0050 " <br /> Surrogate:a,a,a-Tritluorotoluene 0.212 0.200 106 64-140 <br /> Surrogate:4-Bromofluorobenzene 0.181 0.200 90.5 60-140 <br /> LCS(IF12004-BSI) Prepared&Analyzed:06112/0) <br /> Benzene 0.246 0.0050 mg/kg 0.200 123 70-130 <br /> Toluene 0.252 0.0050 0.200 126 70-130 <br /> 0enes <br /> lbenzene 0.247 0.0050 ,1 0.200 124 70-130 <br /> (total) 0.755 0.0050 0.600 126 70-130 <br /> Surrogate:a,a,a-Triuorotoluene 0.213 0.200 106 60-140 <br /> Surrogate:4-Bromofluorobenzene 0.187 0.200 93.5 60-140 <br /> Matrix Spike(IF12004-MSI) Source: MKF0234-01 Prepared&Analyzed:06/12/01 <br /> Benzene 0.194 0.0050 mg/kg 0.200 ND 97.0 60-140 <br /> Toluene 0.200 0.0050 0.200 ND 99.4 60-140 <br /> Ethylbenzene 0.198 0.0050 0.200 ND 99.0 60-140 <br /> Xylenes(total) 0.625 0.0050 0.600 ND 104 60-140 <br /> Surrogate:a,a,a-Trj7uorotoluene 0.196 0.20098.0 60-140 <br /> Surrogate:4-Bromofluorobenzene 0.157 0.200 78.5 60-140 <br /> Matrix Spike Dup(lF12004-MSD1) Source:MKF0234-01 Prepared&Analyzed: 06/12/01 <br /> Benzene 0.184 0.0050 mg/kg 0.200 ND 92,0 60-140 5.29 25 <br /> Toluene 0.192 0.0050 0.200 ND 95.4 60-140 4.08 25 <br /> Ethylbenzene 0.190 0.0050 0.200 ND 95.0 60-140 4.12 25 <br /> Xylenes(total) 0.576 0.0050 0.600 ND 96.0 60-140 8.16 25 <br /> Surrogate:a,a,a-Triuorotoluene 0.200 0.200 100 60-740 <br /> Surrogate:4-Bromofluorobenzene 0.147 0.200 73,5 60-140 <br /> uoia Analytical -Sacramento <br /> q � 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 /> ,!3 <br /> i <br /> Page 5 of 6 <br />