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e ' 819 Striker Avenue,Suite 8 <br /> (D (91Sequoia Sacramento,CA 95834 <br /> Analytical FAX <br /> 6)921-9600 <br /> (916)921-0100 <br /> www sequoialabs com <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2186,Stockton,CA <br /> 3330 Cameron Park Dr Ste 550 Project Number N/A Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 10/18/01 13 43 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC APD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1090185-EPA 5030B(PIT) <br /> Blank(1090185-_BLKl) _ Prepared&Analyzed 09/18/01 <br /> Purgeable Hydrocarbons _ ND 50 ug/1 - <br /> 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 103 " 100 103 60-140 <br /> LCS(1090185-BSI) Prepared&Analyzed 09/18/01 <br /> Benzene 11 0 0 50 ugll 100 110 70-130 <br /> Toluene 10 2 0 50 1100 102 70-130 <br /> Ethylbenzene 100 050 10 0 100 70-130 <br /> Xylenes(total) 309 0 50 30 0 103 70-130 <br /> Surrogate a a a-Trifluorotoluene 11 9 100 119 60-140 <br /> Matrix Spike(1090185-MSI) Source 5109222-02 Prepared&Analyzed 09/18/01 <br /> Benzene 11 1 0 50 ug/l 100 ND 111 60-140 <br /> Toluene 10 1 0 50 1100 ND 101 60-140 <br /> Ethylbenzene 102 0 50 100 ND 102 60-140 <br /> Xylenes(total) 31 3 0 50 30 0 ND 104 60 140 <br /> Surrogate a a a-Trifluorotoluene 113 109 113 60-140 <br /> Matrix Spike Dup(1090185-MSDI) Source 5109222-02 Prepared&Analyzed 09/18/01 <br /> Benzene 11 4 0 50 ug/1 100 ND 114 60 140 2 67 25 <br /> Toluene 104 0 50 " 100 ND 104 60-140 2 93 25 <br /> Ethylbenzene 10 4 0 50 100 ND 104 60-140 1 94 25 <br /> Xylenes(total) 320 0 50 30 0 ND 107 60-140 2 21 25 <br /> Surrogate a a a Try'luorotoluene 109 ]Go 109 60-140 <br />. Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical repori mint be reproduced in its entirety <br /> Page Page 9 of 13 <br />