Laserfiche WebLink
a— ) <br /> Sequoia 1455 McDowellBlvd,,North <br /> CA Ste Petaluma,CA 949544 <br /> 4 <br /> Analytical (707)792 1 <br /> FAX(707)792-0342342 <br /> WWW sequoialabs com <br /> URS Corp-Sacramento Project Arco Site 2093,Tracy,CA P309407 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number Intnm 50265 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 10/06/03 16 58 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> ATR-11 (P309407-11)Water Sampled 09/18/03 12 10 Received 09/19/03 15 25 <br /> Tert-amyl methyl ether ND 1 0 ugll 1 3100050 10/02/03 10/02/03 EPA 8260E <br /> Benzene ND 050 <br /> Tert-butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 1 Q " <br /> Ethanol ND 100 <br /> Ethylbenzene ND 050 <br /> Ethyl tert-butyl ether ND 1 0 " <br /> Methyl tert-butyl ether ND 050 <br /> Toluene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Surrogate Dibromofluoromethane 99% 84-122 " <br /> Surrogate 12-Dichloroethane-d4 108% 74-135 <br /> Surrogate Toluene-d8 94% 84-119 <br /> ATEX-1 (P309407-12)Water Sampled 09/18/03 13 40 Recefved 09/19/03 15 25 <br /> IV ert-amyl methyl ether ND 1 0 ug/l 1 3100050 10/02/03 10/02/03 EPA 8260B <br /> Benzene ND 050 " <br /> Tert-butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 1 0 <br /> Ethanol ND 100 " <br /> Ethylbenzene ND 0 50 " <br /> Ethyl tent-butyl ether ND 1 0 " <br /> Methyl tett-butyl ether ND 050 <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate Dibromofluoromethane 97% 84-122 " <br /> Surrogate 1,2-Dichloroethane-d4 107% 74-135 <br /> Surrogate Toluene-d8 102% 84-119 " <br /> Sequoia Analytical-Petaluma 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 10 of 16 <br />