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CALIFORNIA LABORATORY SERVICES <br /> 11/30/04 13:17 r <br /> ENSR-Sacramento Project: Former Unocal 0 187,43 7 E orAU Ser*ZQ709 <br /> 10411 Old Placerville Rd., Suite 210 Project Number: 06940-325-100 k d ' <br /> Sacramento,CA 95827-2508 Project Manager: Ben Heningburg COC#: 1,2,3 <br /> Volatile Organic Compounds by EPA Method 8260E <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note ' <br /> 1 <br /> NP-2-22(CNK0709-29)Water Sampled: 11/18/0410:05 Received: 11/19/04 10:53 <br /> Di-isopropyl ether ND 0.50 gg/L 1 CN09089 11/23/04 11/23/04 EPA 8260B <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Methyl tert-butyl ether 1.0 0.50 " <br /> tert-Amyl methyl ether ND 0.50 <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogate., Toluene-d8 91.4% 72-125 <br /> NP-2-60(CNK0709-30)Water Sampled: 11/1810409:20 Received: 11/19/0410:53 ' <br /> Di-isopropyl ether ND 0.50 gg/L 1 CN09089 11/23/04 11/23/04 EPA 8260E <br /> Ethyl tert-butyl ether ND 0.50 " " 11 1, .. <br /> Methyl tert-butyl ether ND 0.50 " <br /> tert-Amyl methyl ether ND 0.50 <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogate: Toluene-d8 93.0% 72-125 <br /> NP-2-116(CNK0709-31)Water Sampled: 11/17/04 14:00 Received: 11/19/04 10:53 <br /> Di-isopropyl ether ND 0.50 pg/L 1 CN09089 11/23/04 11/23/04 EPA 8260B <br /> Ethyl tert-butyl ether ND 0.50 IF I, It " IF , <br /> Methyl tent-butyl ether ND 0.50 " " " ^ ^ 11 <br /> tert-Amyl methyl ether ND 0.50 IF " 1. .. <br /> Tert-butyl alcohol ND 5.0 " IF .' IF .. <br /> Surrogate: Toluene-d8 92.5% 72-125 <br /> Trip Blank(CNK0709-32)Water Sampled: 11/1110414:45 Received: 11/19/0410:53 ' <br /> Di-isopropyl ether ND 0.50 pg/L I CN09059 11/22/04 11/22/04 EPA 8260E <br /> Ethyl tert-butyl ether ND 0.50 IF <br /> Methyl tert-butyl ether ND 0.50 ' <br /> tert-Amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 " IF <br /> Surrogate: Toluene-d8 8&.l % 72-125 <br /> • <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 ' <br />