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4D Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> *V&V Analytical FAX(916)921-0100 <br /> www.secluolalabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469, Stockton, CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: N/A <br /> Cameron Park CA, 95682 Reported: <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 /> EAnalytc::: Reporting Spike Source %REC RPD <br /> Result Limit Units Level Result %REC ' Limits RPD Limit Notes <br /> Batch 1060006-EPA 5030B(P/T) <br /> Blank(I060006-BLKI) Prepared&Analyzed:05/31/01 <br /> Puroeable Hydrocarbons ND 50 0 ug/l <br /> Benzene ND 0.540 " <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:a,a,a-Tr�uorotoluene 8.69 10.0 <br /> 86.9 60-140 <br /> LCS 1060006-BS1) Prepared&Analyzed:05/31/01 <br /> Benzene 8.67 0.500 <br /> Toluene � 86.7 70-130 <br /> 4.39 0.500 10.0 939 70-130 <br /> ylbenzene 9.79 0.500 10.0 97-9 70-130 <br /> ]encs(total) <br /> h 0 <br /> 30.0 0 500 30,0 100 70-130 <br /> Surrogate:a,a,o-Tri)7uorotoluene 8.2110.0 <br /> 82.1 60-140 <br /> Matrix Spike(1060006-MSI) Source: 5105376-02 Prepared&Analyzed:05/31/01 <br /> Benzene 8 72 <br /> Toluene 0.500 ug/I 10.0 0.536 81.8 60-140 <br /> Ethyl8.70 0.500 10.0 ND 87.0 60-140 <br /> Xylenes <br /> (totazenel) <br /> 9.41 0.500 10.0 ND 94.1 60-140 <br /> Xylenes(total} 27.7 0.500 30.0 ND 92.3 60-140 <br /> Surrogate:a,o,a-Trii)7uorotoluene 8.07 10,0 <br /> 80.7 60-140 <br /> Matrix Spike Dup(1060006-MSD1) Source: 5105376-02 Prepared&Analyzed:05/31/01 <br /> Benzene 8.42 <br /> 0.500 ug/I 10.0 0.536 78.8 60-140 <br /> Toluene 8.39 0.500 IM ND 83.9 60-140 3.50 253.6 <br /> H 3 25 <br /> thylbenzene 9.02 0.500 10.0 ND 901 60-14D 4.63 25 <br /> )Cy[enes(total) 26.8 0.500 30.0 ND 89.3 60-140 3.30 <br /> Surrogate:a,a,aTrifluorotoluene 25 <br /> 7.61 x,100 �__.--_-_.__ <br /> 76,1 60-140 <br /> quota Analytical- Sacramento The results in this report a 1 to the samples analyzed in accordance with the chain of <br /> P PP Y <br /> custody docrrment This analytical report must be reproduced in its entirety. <br /> f <br /> Page 7 of 11 <br />