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CALIFORNIA LABORATORY SERVICES ' <br /> 11/30/0413:17 , <br /> ENSR-Sacramento Project: Former Unocal 0187,437 E5 Wo k Urderc#:t�709 <br /> 10411 Old Placerville Rd.,Suite 210 Project Number; 06940-325-100 S W <br /> Sacramento,CA 95827-2508 Project Manager: Ben Heningburg COC#: 1,2,3 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> U-6(CNK0709-05)Water Sampled: 11/17/04 10:03 Received: 11/19/04 10:53 ' <br /> Di-isopropyl ether ND 0.50 gg/L 1 CN09034 11/19/04 11/19/04 EPA 8260B <br /> Ethyl tert-butyl ether ND 0.50 <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 /> U-7(CNK0709-06)Water Sampled: 11/16/04 11:59 Received: 1111910410:53 <br /> Di-isopropyl ether ND 0.50 gg/L I CN09034 11/19/04 11/19/04 EPA 8260B ' <br /> Ethyl tert-butyl ether ND 0.50 <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 /> U-8(CNK0709-07)Water Sampled: 11/18/04 11:48 Received: 11/19/04 10:53 <br /> Di-isopropyl ether ND 0.50 pg/L 1 CN09034 11/19/04 11120/04 EPA 8260B <br /> Ethyl tert-butyl ether ND 0.50 ' <br /> Methyl tert-butyl ether ND 0.50 <br /> tert-Amyl metbyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 <br /> Surrogate: Toluene-d8 94,801a 72-125 <br /> U-9(CNK0709-08)Water Sampled: 11/18/04 09:45 Received: 11/19/04 10:53 ' <br /> Di-isopropyl ether ND 0.50 µg/L 1 CN09034 11/19/04 11/20/04 EPA 82608 <br /> Ethyl tert-butyl ether ND 0.50 " <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 92.8% 72-125 <br /> • <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />