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CALIFORNIA LABORATORY SERVICES <br /> 02/27/04 11:38 <br /> ENSR-Sacramento Project: Former Unocal 0187,437 ELLS worrkv6rde ck!aii 643 <br /> 10411 Old Placerville Rd., Suite 210 Project Number: 06940-325-100 COC#: 14237,14235,14236 <br /> Sacramento,CA 95827-2508 Project Manager: Ben I.Heningburg <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Reporting <br /> nalyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> -1 (CNB0643-01)Water Sampled: 02/17/04 15:10 Received:02119/0410:20 <br /> Di-isopropyl ether ND 0.50 gg/L 1 CN01521 02/24/04 02/24/04 EPA 8260B <br /> hyl tert-butyl ether ND 0.50 <br /> ethyl ten-butyl ether ND 0.50 <br /> Tert-amyl methyl ether ND 0.50 " <br /> Ef ert-butyl alcohol ND 5.0 <br /> urrogate: Toluene-d8 953% 72-125 " <br /> U-2(CNB0643-02)Water Sampled: 02/17/04 14:00 Received:02/19/04 10:20 <br /> tihyl-isopropyl ether ND 0.50 µg/L I CN01521 02/24/04 02/24/04 EPA 8260B <br /> tert-butyl ether ND 0.50 <br /> Methyl tert-butyl ether ND 0.50 <br /> ert-amyl methyl ether ND 0.50 " <br /> aryl alcohol ND 5.0 <br /> u rogate: Toluene-d8 95.7% 72-125 " <br /> J1-3(CNB0643-03)Water Sampled:02/17/04 14:30 Received:02/19/04 10:20 <br /> Mi-isopropyl ether 0,73 0.50 ug/L 1 CN01521 02/24/04 02/24/04 EPA 8260B <br /> Ethyl tert-butyl ether ND 0.50 <br /> ethyl tert-butyl ether ND 0.50 <br /> ert-amyl methyl ether ND 0.50 " <br /> ert-butyl alcohol ND 5.0 " <br /> urrogate: Toluene-d8 965% 72-125 " <br /> 4(CNB0643-04)Water Sampled:02/17/04 14:52 Received:02/19/04 10:20 <br /> Di-isopropyl ether ND 0.50 pg/L I CN01521 02/24/04 02/24/04 EPA 8260B <br /> hyl ter-butyl ether ND 0.50 <br /> Wethyl tert-butyl ether ND 0.50 <br /> & <br /> ert-amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 <br /> lurrogate., Toluene-d8 95.9% 72-125 " <br /> CA DOHS ELAP AccreditatiordRegistration Number 1233 <br /> 49 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />