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CALIFORNIA LABORATORY SERVICES <br /> Page 4 of 28 07/27/06 10:19 <br /> ENGEO-Tracy Project: North Lathrop Properties <br /> 2880 N.Tracy Blvd Ste#3 Project Number: 5044.5.001.01 CLS Work Order#: CPG0655 <br /> Tracy,CA 95376 Project Manager: Zac Crawford COC#:69131 <br /> Conventional Chemistry Parameters by PA Methods <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> MWI ((Jnfiitered)(CPG0655-01)Water Sampled:07/19/06 12:40 Received:07/19/06 17:30 <br /> Total Alkalinity 460 5.0 mg/L I CP05461 07/21/06 07/21/06 EPA 310.1 <br /> Bicarbonate as CaCO3 460 5.0 <br /> Carbonate as CaCC13 ND 5.0 <br /> Hydroxide as CaCO3 ND 5.0 <br /> Specific Conductance(EC) 2000 1.0 µmhos/cm CP05432 07/20/06 07/20/06 EPA 120.1 <br /> Methylene Blue Active Substances 0.19 0.10 mg/L CP05465 07/21/06 07/21/06 EPA 425.1 <br /> PH 7.55 0.001 pH Units CP05428 07/20/06 07/20/06 EPA 150.1 <br /> Sulfite ND 5000 µg/1 CP05441 07/20/06 07/20/06 EPA 377.1 <br /> Total Dissolved Solids 1300 10 mg/L CP05471 07/24/06 07/25/06 EPA 160.1 <br /> MWI (Field Filtered)(CPG0655-02)Water Sampled:07/19/06 12:40 Received:07/19/06 17:30 <br /> Ammonia as N ND 0.10 mg/L 1 CP05449 07/20/06 07/20/06 EPA 350.2 <br /> Bromide 1.1 0.10 „ CP05425 07/20/06 07/21/06 EPA 300.0 <br /> Chloride 210 5.0 10 CP05455 07/21/06 07/21/06 " <br /> Fluoride 0.17 0.10 1 CP05425 07/20/06 07/21/06 " <br /> Total Hardness as CaCO3 240 1.0 „ CP05476 07/21/06 07/21/06 SM 2340B <br /> Nitrate/Nitrite as N 63000 4000 µg/L 10 CP05455 07/21/06 07/21/06 EPA 300.0 HT-4 <br /> Nitrate as N 63 5.0 mg/L " " " " HT-4 <br /> Orthophosphate as PO4 0.43 0.15 1 CP05445 07/20/06 07/20/06 EPA 365.2 <br /> Sulfate as SO4 66 5.0 10 CP05455 07/21/06 07/21/06 EPA 300.0 <br /> Total Kjeldahl Nitrogen 0.91 0.20 1 CP05539 07/25/06 07/25/06 EPA 351.3 <br /> MW2(Unfiltered)(CPG0655-03)Water Sampled:07/19/0611:57 Received:07/19/06 17:30 <br /> Total Alkalinity 390 5.0 mg/L 1 CP05461 07/21/06 07/21/06 EPA 310.1 <br /> Bicarbonate as CaCO3 390 5.0 <br /> Carbonate as CaCC3 ND 5.0 <br /> Hydroxide as CaCO3 ND 5.0 <br /> Specific Conductance(EC) 4600 1.0 µmhos/cm CP05432 07/20/06 07/20/06 EPA 120.1 <br /> Methylene Blue Active Substances 0.16 0.10 mg/L CP05465 07/21/06 07/21/06 EPA 425.1 <br /> PH 7.41 0.001 pH Units CP05428 07/20/06 07/20/06 EPA 150.1 <br /> Sulfite ND 5000 µg/L CP05441 07/20/06 07/20/06 EPA 377.1 <br /> Total Dissolved Solids 2800 10 mg/L CP05471 07/24/06 07/25/06 EPA 160.1 <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 WWW,californislab.com 916-638-7301 Fax: 916-638-4510 <br />