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8Hi J"C"A 5037 <br /> ` Dnve <br /> Sequoia Morgan Hill CA 95037 <br /> (408)7 -9300 <br /> FAX(408)78282-6308 <br /> Analytical <br /> . www segiwialabs corn <br /> E <br /> rporation[Arco1 Project ARCO#0760,Lodi,CA NWL0005 <br /> teway Oaks Dr,Ste 300 Project Number G09JZ-0461 Reported <br /> nto CA,95833 Project Manager Vernon P Elarth 12/09/04 20 32 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source °/.REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4LO8003-EPA 5030B Modified/EPA 8260B <br /> Blank(4L08003-BLKI) Prepared&Analyzed 12/08/04 <br /> tert-Amyl methyl ether ND 00050 mg/kg <br /> Benzene ND 00050 <br /> tert-Butyl alcohol ND 0 020 " <br /> D.-isopropyl ether ND 00050 <br /> 1,2-Dibromoethane(EDB) ND 00050 <br /> 1 2-Dichloroethane ND 00050 <br /> Ethanol ND 010 " <br /> Ethyl tert-butyl ether ND 0 0050 " <br /> i Ethylbenzene ND 00050 " <br /> Methyl tert-butyl ether ND 00050 " <br /> Toluene ND 00050 " <br /> Mylenes(total) ND 00050 " <br /> asoline Range Organics(C4-C 12) ND 0 10 " <br /> Surrogate 12-Drchloroethane-d4 000425 000500 85 78-136 <br /> LLaboratory Control Sample(4L08003-BS1) Prepared&Analyzed 12/08/04 <br /> tort-Amyl methyl ether 00107 00050 mg/kg 00100 107 78-135 <br /> Benzene 00106 00050 00100 106 59-126 <br /> tert-Butyl alcohol 00598 0 020 00500 120 20-164 <br /> Dt-isopropyl ether 00122 00050 00100 122 72-127 <br /> 1,2-Dibromoethane(EDS) 000971 00050 00100 97 83-138 <br /> 1,2-Dichlom thane 000984 00050 " 00100 98 83-130 <br /> Ethanol 0 181 010 0 200 90 51-130 <br /> Ethyl tert-butyl ether 00107 00050 00100 107 77-129 <br /> Ethylbenzene 00107 00050 00100 107 60-145 <br /> Methyl tert-butyl ether 00115 00050 " 00100 115 47-149 <br /> Toluene 00108 00050 00100 108 66-142 <br /> Xylenes(total) 00303 00050 00300 101 83-135 <br /> Surrogate 12-Dichloroethane-d4 000446 000500 89 78-136 1 <br /> Sequoia Analytical -Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> . custody document Unless otherwise stated,results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 5 of 8 <br />