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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> • Analytical wFAX(916)921-0100 <br /> wwseq uoialabs.com <br /> Delta Environmental COnsultantS(Cameron Park) Project: ARCO 5469, Stockton,CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: NIA <br /> Reported: <br /> Cameron Park CA, 95682 <br /> Project Manager. Jay Johnson 06/04/01 13:56 <br /> Total Purgeable Hydrocarbons (C6-C12) 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 1060008-EPA 50301B(PIT) <br /> Stank(1060008-B1,K1) Prepared&Analyzed:05/31/01 <br /> Purgeable Hydrocarbons ND 50.0 ug/l <br /> Benzene ND 0.500 " <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:a,a,a-TriJ7uorotoluene 11.0 10 <br /> 110 60-140 <br /> LCS(1060008-BSI) Prepared&Analyzed:05/31/01 <br /> Benzene 9.59 0.500 ug/1 10.0 - - <br /> 95.9 70-130 <br /> Toluene 10.6 0.500 10.0 106 70-130 <br /> ylbenzene 11.2 0.500 10.0 112 70-130 <br /> h0 <br /> lenes(total) 28.9 0.500 30.0 <br /> 96.3 70-13{} <br /> Surrogate:a,a,a-Triuorotoluene 11.2 10.0112 60-l40 <br /> Matrix Spike(1060008-MSI) Source: 5105376-01 Prepared&Analyzed:05/31/01 <br /> Benzene <br /> olu <br /> T9.23 0.500 ug/1 10.0 ND 92.3 60-140 <br /> Toluene 10.2 0.500 10.0 ND 102 60-140 <br /> Ethylbenzene 11.0 0.500 10.0 ND 110 60-140 <br /> Xylenes(total) 28.6 0,500 30.0 ND 95.3 60-140 <br /> Surrogate:a,a,a-Tr j?uorotoluene 10.7 10.0 <br /> 107 60-140 <br /> Matrix Spike Dup(1D600D$-MSDI) Source:SI05376-01 Prepared&Analyzed:05/31/01 <br /> Benzene 9.57 0.500 u <br /> �1 10.0 ND 95.7 60-140 3.62 25 <br /> Toluene <br /> Ethylbenzene 10.6 0.500 10.0 ND 106 60-140 3.85 25 <br /> „ <br /> 11.3 0.500 10.0 ND 113 60-140 2.69 25 <br /> Xylenes(total) 29.2 0.500 30.0 ND 97.3 60-140 2.08 25 <br /> Surrogate:a,a,a-Trifluorotoluene 11.2 -10.0 112 60-140 <br /> equoia 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 he reproduced in its entirety, <br /> i <br /> Page 8 of 11 <br />