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CALIFORNIA LABORATORY SERVICES <br /> Page 8 0$28 07/27/06 10:19 <br /> ENGEO-Tracy Project: North Lathrop Properties <br /> 2880 N.Tracy Blvd Ste 43 Project Number: 5044.5.001.01 CLS Work Order#:CPG0655 <br /> Tracy,CA 95376 Project Manager: Zac Crawford COC#:69131 <br /> Metals (Dissolved) by EPA 200 Series Methods <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> N4WI(Field Filtered)(CPG0655-02)Water Sampled:07/19/06 12:40 Received:07/19/06 17:30 <br /> Aluminum ND 50 µg/1. 1 CP05476 07/21/06 07/21/06 EPA 200.7 QB-2 <br /> Barium 77 20 <br /> Chromium 19 10 <br /> Copper ND 10 <br /> Iron ND 100 <br /> Manganese ND 20 <br /> Nickel ND 20 <br /> Zinc ND 20 <br /> Boron 860 50 <br /> Arsenic 9.9 2.0 CP05548 07/25/06 07/26/06 EPA 200.8 A-COM <br /> Lead ND 5.0 " A-COM <br /> Thallium ND 5.0 " " " " " A-COM, <br /> QC-2H <br /> 1 M2(Field Filtered)(CPG0655-04)Water Sampled:07/19/06 11:57 Received:07/19/06 17:30 <br /> Aluminum 130 50 pg/L 1 CP05476 07/21/06 07/21/06 EPA 200.7 <br /> Barium 260 20 " <br /> Chromium ND 10 <br /> Copper ND 10 <br /> Iron 130 100 <br /> Manganese ND 20 <br /> Nickel ND 20 <br /> Zinc ND 20 <br /> Boron 880 50 " <br /> Arsenic 15 2.0 CP05548 07/25/06 07/26/06 EPA 200.8 A-COM <br /> Lead ND 5.0 " A-COM <br /> Thallium ND 5.0 " " " " A-COM, <br /> QC-2H <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 />