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Geollnalytical Laboratories,-inc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209)572-0900 Fax (209)572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# K333-07 Date: 12/10/99 <br /> San Joaquin County D.A., EPU Date Rec'd: 11/T <br /> 222 E.Weber Avenue Source: Date Started: 12/3/99 <br /> Stockton CA 95202 <br /> Date Completed: 12/7/99 <br /> Project: Date Sampled: 11/17/99 <br /> Time: 11:00am <br /> Sampler: L.Briggs/A.Youngblood <br /> Sample ID: SW111799-1A El Pinal filter press <br /> Lab ID: K23663 <br /> Aquatic Toxicity <br /> Test Type: EPA/600/4-90/027F Control 10 mg/L 50 mg/L 100 mg/1-250 mg/1-500 mg/L <br /> Dilution Water: Reconstituted DI Water Initial pH 7.78 7.82 7.83 7.78 7.81 7.82 <br /> Species: Pimephales Promelas (Larval) 12/3/99 D.O. 8.52 8.49 8.47 8.44 8.42 8.32 <br /> Common Name: Fathead Minnow Temp.°C 19.1 18.9 19.2 19.0 19.2 19.1 <br /> Supplier: Aquatic Resources <br /> Dilution Volume: 2000 ml 24 Hrs. pH 7.75 7.79 7.81 7.77 7.81 7.79 <br /> #Fish per Dilution:20 12/4/99 D.O. 8.44 8.11 7.93 7.87 7.71 7.60 <br /> Dead in Acclimation Tank: 0 Temp.°C 19.7 19.8 19.7 20.0 19.9 19.9 <br /> Average Length: NA Mortalities 0 3 2 4 4 6 <br /> Average Weight: NA 48 Hrs. pH 7.73 7.76 7.80 7.77 7.79 7.74 <br /> 12/5/99 D.O. 8.31 7.86 7.59 7.30 7.18 6.98 <br /> Temp.°C 19.8 20.1 20.2 19.9 19.9 20.0 <br /> Mortalities 0 0 2 3 2 1 <br /> Initial Control Hardness 80 72 Hrs. pH 7.70 7.75 7.78 7.77 7.78 7.75 <br /> Final Control Hardness 80 12/6/99 D.O. 8.26 7.35 7.19 7.01 6.89 6.57 <br /> Temp.°C 19.9 20.2 20.4 20.4 20.2 20.4 <br /> Mortalities 0 0 1 1 1 0 <br /> 96 Hire. pH 7.69 7.75 7.77 7.75 7.76 7.73 <br /> 12/7/99 D.O. 8.18 6.52 6.34 6.05 5.95 5.43 <br /> Temp.°C 19.6 19.7 19.4 19.5 19.7 19.8 <br /> Mortalities 0 0 0 0 1 1 <br /> Total Mortalities 0 3 5 8 8 a <br /> Notes <br /> Using the EPA Probit analysis program the estimated LC50 value from mortalities observed in this test is 27.0. <br /> Ramiro Salgado Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />