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CALIFORNIA E VICES <br /> Page 6 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 /> MW4(Unfiltered)(CPG0655-07)Water Sampled:07/19/06 09:45 Received:07/19/0617:30 <br /> Total Alkalinity 180 5.0 mg/L 1 CP05461 07/21/06 07/21/06 EPA 310.1 <br /> Bicarbonate as CaCO3 180 5.0 „ <br /> Carbonate as CaCO3 ND 5.0 " <br /> Hydroxide as CaCO3 ND 5.0 <br /> Specific Conductance(EC) 16000 1.0 µmhos/cm CP05432 07/20/06 07/20/06 EPA 120.1 <br /> Methylene Blue Active Substances 0.25 0.10 mg/L CP05465 07/21/06 07/21/06 EPA 425.1 <br /> pH 6.78 0.001 pH Units CP05428 07/20/06 07/20/06 EPA 150.1 <br /> Sulfite ND 5000 pg/L CP05441 07/20/06 07/20/06 EPA 377.1 <br /> Total Dissolved Solids 12000 10 mg/L CP05471 07/24/06 07/25/06 EPA 160.1 <br /> MW4(Field Filtered)(CPG0655-08)Water Sampled:07/19/06 09:45 Received:07/19/06 17:30 <br /> Ammonia as N 0.64 0.10 mg/L 1 CP05449 07/20/06 07/20/06 EPA 350.2 <br /> Bromide 19 0.50 5 CP05455 07/21/06 07/21/06 EPA 300.0 <br /> Chloride 6400 I00 200 " <br /> Fluoride 0.16 0.10 1 CP05425 07/20/06 07/21/06 " <br /> Total Hardness as CaCO3 6200 5.0 5 CP05476 07/21/06 07/25/06 SM 2340B <br /> Nitrate/Nitrite as N ND 400 pg/L 1 CP05425 07/20/06 07/21/06 EPA 300.0 <br /> Nitrate as N ND 0.50 mg/L " 1. „ 1. <br /> Orthophosphate as PO4 ND 0.15 CP05445 07/20/06 07/20/06 EPA 365.2 <br /> Sulfate as SO4 200 2.5 5 CP05455 07/21/06 07/21/06 EPA 300.0 <br /> Total Kjeldahl Nitrogen 0.63 0.20 1 CP05539 07/25/06 07/25/06 EPA 351.3 <br /> MW5(Unfiltered)(CPG0655-09)Water Sampled:07/19/0610:33 Received:07/19/06 17:30 <br /> Total Alkalinity 740 5.0 mg/L 1 CP05461 07/21/06 07/21/06 EPA 310.1 <br /> Bicarbonate as CaCO3 740 5.0 <br /> Carbonate as CaCO3 ND 5.0 <br /> Hydroxide as CaCO3 ND 5.0 <br /> Specific Conductance(EC) 1900 1.0 µmhos/cm CP05432 07/20/06 07/20/06 EPA 120.1 <br /> Methylene Blue Active Substances ND 0.10 mg/L CP05465 07/21/06 07/21/06 EPA 425.1 <br /> pH 7.44 0.001 pH Units CP05428 07/20/06 07/20/06 EPA 150.1 <br /> Sulfite ND 5000 pg/L CP05441 07/20/06 07/20/06 EPA 377.1 <br /> Total Dissolved Solids 1200 10 mg/L CP05471 07/24/06 07/25/06 EPA 160.1 <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 />