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G(Onalytical Laboratorionc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# N239-16 Date: 9/10/02 <br /> San Joaquin County Environmental Health Date Rec'd: 8/27/02 <br /> 304 E.Weber 3rd Floor Sore: Date Started: 9/1/02 <br /> Stockton CA 95202 Date Completed:9/5/02 <br /> Project: Date Sampled: 8/26/02 <br /> Time: <br /> Sampler: Kasey Foley <br /> Sample ID: SC03 <br /> Lab ID: N308812 <br /> Aquatic Toxicity <br /> Test Type: 96 hr static acute Control 1 mg/L 10 mg/L 25 mg/L 50 mg/L 62.5mg/L <br /> Dilution Water: Reconstitted DI Water Initial pH 7.5 7.5 7.6 7.5 7.5 7.6 <br /> Species: Pimephales Promelas 9/1/02 D.O. 8.6 8.6 8.7 8.7 8.5 8.5 <br /> Common Name: Fathead Minnow Temp.°C 20.8 20.6 20.5 20.7 20.8 20.7 <br /> Supplier: Thomas Fish Company <br /> Dilution Volume: 20,000 ml 24 Hrs. pH 7.4 7.5 7.5 7.4 7.4 7.5 <br /> #Fish per Dilution:20 9/2/02 D.O. 8.2 8.3 8.3 8.2 8.1 8.0 <br /> Dead in Acclimation Tank: <1 % Tamp.°C 20.3 20.5 20.4 20.4 20.3 20.5 <br /> Average Length: 37 mm Mortalities 0 8 10 10 10 10 <br /> Average Weight: 0.44 g 48 Hrs. pH 7.4 7.5 7.6 7.5 7.4 7.5 <br /> 9/3/02 D.O. 8.0 8.2 7.9 8.4 7.6 7.7 <br /> Temp.°C 19.4 19.2 19.3 19.3 19.5 19.4 <br /> Mortalities 0 2 0 0 0 0 <br /> Initial Control Hardness 45 72 Hrs. pH 7.5 7.4 7.6 7.5 7.3 7.4 <br /> Final Control Hardness 44 9/4/02 D.O. 8.3 7.9 8.1 8.3 7.9 8.1 <br /> Temp.°C 19.7 19.8 19.8 19.9 19.8 19.7 <br /> Mortalities 0 0 0 0 0 0 <br /> 96 Hrs. pH 7,4 7.5 7.6 7.5 7.3 7.4 <br /> 9/5/02 D.O. 8.1 8.1 7.6 7.7 7.2 7.8 <br /> Temp.°C 20.3 20.3 20.4 20.2 20.3 20.3 <br /> Mortalities 0 0 0 0 0 0 <br /> Total Mortalities 0 10 10 10 10 10 <br /> Notes <br /> Using the EPA Probit Analysis Program the est. LC50 value based on mortalities is <1 mg/L. <br /> e ,y(�cULI� <br /> chit <br /> m ay 1 Donna Keller <br /> Inorganic Supervisor Certification # 1157 Laboratory Director <br />