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819 Striker Avenue Swte 8 <br /> Sequoia Sacramento C95834 <br /> (916)922 1-96009600 <br /> a— ) FAX(916)921-0100 <br /> • Analytical www sequolalabs corn <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2168, Stockton, CA <br /> 3330 Cameron Park Dr Ste 550 ProectNumber N/A Reported <br /> Cameron Park CA,95682 Project Manager .lay Johnson 08/29/01 15 31 <br /> Total Purneable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Sp4 a Source °/DREG RPD <br /> Analyte Result Limit Units Level Result %aRToC Limits RPD Limit Notes <br /> Batch 1080328-EISA 5030B (P/T) <br /> Blank(1080328-BLKI) Prepared&Analyzed 08/28/01 <br /> Purgeable Hydrocarbons _ NL) �0 ug/I <br /> Benzene ND 050 <br /> Toluene ND OA " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Tris luorotoluene 119 100 119 60-140 <br /> LCS(1080328-BS1) Prepared&Analyzed 08/28/01 <br /> Benzene 9 87 0 50 uJi 100 987 70-130 <br /> Toluene 5189 0 50 100 989 70-130 <br /> thylbenzene 9 87 050 100 98 7 70-130 <br /> lens(total) 282 0 50 300 940 70-130 <br /> Surrogate a a a-Try7uoioroluene 11 9 100 119 60-140 <br /> Matrix-Spike(1080328-MSI)— _ __ _ __ Source 5108232-10 Prepared 08/28/01 Analyzed 08/29/01 <br /> Benzene 946 050 ug/1 100 ND 946 60-140 <br /> Toluene 952 050 100 ND 952 60-140 <br /> Ethylbenzene 962 050 100 ND 962 60-140 <br /> Xylenes(total) 270 0:)0 300 ND 900 60-140 <br /> Surrogate a a a-T.iuorotoluene 114 100 114 60-140 <br /> Matrix Spike'Dup(1080328-MSDI) Source S108232-I0 Prepared 08/28/01 Analyzed 08/29/01 <br /> Benzene 922 0 50 ug/l 100 ND 922 60-140 2 57 25 <br /> Toluene 9 36 0 50 100 ND 93 6 60-140 1 69 25 <br /> Ethylbenzene 9 45 050 100 ND 94-5 60-140 1 78 25 <br /> Xyienes(total) 262 0 50 300 ND 873 60-140 3 01 25 <br /> Surrogate a a,a-Trifluoro toluene 11 7 100 117 60-140 <br /> equola Analytical- Sacramento The i esults in this i eport apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must he reproduced in its entirety <br /> Page 10 of 14 <br /> r�i 4 <br />