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Drive <br /> Sequoia Morgan Hill CA 95037 <br /> (408)776-9600 <br /> FAX <br /> 8)782 6308 <br /> Analytical <br /> www equotalabs coin <br /> URS Corporation[Arcot] Project ARCO#6100,Tracey,CA MOF0786 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number GOC IY-0003 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 07/22/05 16 37 <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 5GO1012- EPA 5030B P/T/EPA 8260B <br /> Blank(5G41012-BLKI) Prepared&Analyzed 07/01/05 <br /> tert-Amyl methyl ether ND 050 ug/t <br /> Benzene ND 050 <br /> tent-Butyl alcohol ND 20 <br /> Di-isopropyl ether ND 050 " <br /> 12-Dibromoethane(EDB) ND 050 " <br /> 1,2-Dichloroethane ND 050 " <br /> Ethanol ND 100 " <br /> Ethyl tert-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert butyl ether ND 050 " <br /> Toluene ND 050 <br /> & <br /> lenes(total) ND 0 50 " <br /> asohne Range Organics(C4-C 12) ND 50 <br /> Surrogate 12-.Dichloroethane-d4 223 250 89 60-135 <br /> Blank(5G01012-BLK2) Prepared 07/01/05 Analyzed 07/02/05 <br /> tert-Amyl methyl ether ND 050 ugll <br /> Benzene ND 0 50 <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 0 50 " <br /> 1,2-Dichloroethane ND 050 " <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert butyl ether ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 50 <br /> Surrogate 12-Dichloroethane-d4 240 250 96 60-135 <br /> Sequoia Analytical-Morgan Hill The resulls in this report apply to the samples analy_ed 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 8 of 17 <br />