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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento, CA 95834 <br /> ;916)921-96W <br /> Analytical wv+FAX(916)921-0100 <br /> IWO <br /> n+r.seq uoialabs-coabs-com <br /> • <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469, Stockton,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number: NIA Reported; <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 10/01/01 15:20 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW1-39'(5109223-01)Water Sampled:09/14/01 05:20 Received:09/14/01 10:17 <br /> Teri-butyl alcohol ND 200 ug/] 1 1090294 09/27/01 09/27/01 EPA 8260B <br /> Methyl tert-butyl ether ND 2.0 " <br /> Di-isopropyl ether ND 2.0 ^ " <br /> Ethyl tert-butyl ether ND 2.0 " <br /> Tert-amyl methyl ether ND 2.0 " <br /> 1,2-Dichloroethane ND 2.0 ^ <br /> Ethylene dibromide _ ND 2.0 <br /> Surrogate: 1,1-DCA44 ��- ----- 109% ----60-140 " <br /> MW2-38'(5109223-02)Water Sampled: 09/1410106:30 Received: 09/14/01 10:17 <br /> Tert-butyl alcohol ND 200 ug/l 1 1090294 09/27/01 09/27/01 EPA 8260B <br /> Methyl tert-butyl ether ND 2.0 " <br /> Di-isopropyl ether ND 2.0Am " <br /> 1 tert-butyl.ether ND 2.0 " <br /> -amyl methyl ether ND 2.0 " <br /> 1,2-Dichloroethane ND 2.0 " <br /> Ethylene dibromide ND 2.0 " <br /> Surrogate: 1,2-DCA-d4 108% 60-140 " <br /> MW3-38'(5)09223-03)Water Sampled: 09/14101 04:59 Received:09/14/01 10:17 <br /> Teri-butyl alcohol ND 200 ug/l l 1090294 09/27/01 09/27/01 EPA 8260B <br /> Methyl tert-butyl ether ND 2.0 " <br /> Di-isopropyl ether ND 2-0 " <br /> Ethyl tert-butyl ether ND 2.0 ^ " <br /> Tert-amyl methyl ether ND 2.0 <br /> 1,2-Dichloroethane ND 2.0 <br /> Ethylene dibromide ND 2.0 " " <br /> Surrogate: 1,2-DCA-d4 110% 60-140 <br /> uoia Analytical - Sacramento The results in this report apply to the samples Qnal}zzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced to its entirety, <br /> 4 Page 2 of 13 <br />