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09/10/2002 16: 42 57209160 <br /> GEOANALYTICALB PAGE 04 <br /> GeoAnalytical Laboratories, Inc. <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 Source Date Rec'd: 8/27/02 <br /> 304 E.Weber 3rd Floor Date Started: 9/1/02 <br /> Date Completed-.9/5/02 <br /> Stockton CA 95202 <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 mg1 10 mg/L 25 mg1L 60 mg/L 62.5mg/L <br /> Dilution Water. Reconstitted DI Water initial pH 75 7.5 7.6 7.5 7.5 7.6 <br /> Spades: 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 Mrs, PH 7.4 T5 7.5 7,4 7.4 7.5 <br /> #Fish per Dilution:20 912/02 D.O. 8.2 8.3 8.3 8.2 8.1 8.0 <br /> Dead In Acclimation Tank: <1 % Temp.°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 Mrs. PH 7.4 7.5 7.6 7.5 7.4 7.5 <br /> 913102 0-0. 8.0 8.2 7.9 8.4 7.6 7.7 <br /> Temp.°C 19.4 19.2 19.3 18.3 19.5 19.4 <br /> Mortalities 0 2 0 0 0 0 <br /> Initial Control Hardness 45 72 Mrs. pH 7.5 7.4 7.6 7.5 7.3 7.4 <br /> Final Control Hardness 44 9/4/02 D.C. 8.3 7.9 8.1 8.3 7.9 8.1 <br /> Temp.°C 19.7 19.8 1918 19.9 19.8 19.7 <br /> Mortalities 0 0 0 0 0 0 <br /> 88 Mrs. PH Z4 7.5 7.e 7.5 7.3 7.4 <br /> 915/02 D.0- 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 /> ohit �lan�� Donna Keller <br /> Inorganic Supervisor Certification k 1157 Laboratory Director <br />