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Drive <br /> Sequoia 885JamsCis 5037 <br /> Morgan Hill GA 95037 <br />' (408)776 9600 <br /> Analytical -ww seq o 782 6309 <br /> corn www sequoialabs coin <br /> URS Corporation(Arcola Project ARCO#0760,Lodi,CA MNK0808 <br /> 1 2870 Gateway Oaks Dr,Ste 300 Project Number G09JZ-0461 Reported <br /> Sacramento CA,95833 Project Manager Vern Elarth 12/10/04 17 00 <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result /.Amit Units Levei Result %REC Limits RPD Limit Notes <br /> Batch 4LO9004-EPA 5030B PIT/EPA 8260B <br /> Matrix Spike Dup(4L09004-MSDI) Source MNLO149-02 Prepared&Analyzed 12/09/04 <br />' tert-Amyl methyl ether 186 10 ug/l 200 ND 93 82-140 3 20 <br /> Benzene 209 10 200 ND 104 69-124 6 20 <br /> tert-Butyl alcohol 1110 400 1000 ND 111 56-131 0 20 <br /> Di-isopropyl ether 203 10 200 ND 102 76-130 2 20 <br />' 1,2-Dibromoethane(EDB) 166 10 " 200 ND 83 77-132 9 20 <br /> 1,2-Dichloroethane 192 10 200 ND 96 77-136 3 20 <br /> Ethanol 4880 2000 4000 ND 122 31-143 22 20 RB <br />' Ethyl tert-butyl ether 200 10 200 ND 100 81-121 0 20 <br /> Ethylbenzene 220 10 200 ND 110 84-132 8 20 <br /> Methyl tert-butyl ether 994 10 200 890 52 63-137 2 20 BB,LN <br /> Toluene 212 10 200 ND 106 78-129 9 20 <br /> Kawiwxylenes(total) 661 10 600 ND 110 83-137 5 20 <br /> arrogate 1 2-Dichloroethane-d4 403 5 00 81 78-129 <br /> Sequoia Analytical-Morgan Hill The results in this report apply 10 the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> 0 This analytical report must be reproduced in its entirety <br /> Page 12 of 13 <br />