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GeoAnalyfical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto, CA 95351 Phone f209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> port 4 M352-18 Date 12/26/01 <br /> tAdvanced GeoEnvironmentaI, Inc <br /> Source Date IlLc'd 72/1$/01 <br /> 837 Shaw Rd Date Started 12/19/01 <br />' Stockton CA 95215 Date Completed 12/23/C1 <br /> Project FIag City Chevron Date Sampled 12/18/01 <br />' Time 9 00arn <br /> Sampler Tim Cuellar <br /> Sample ID Effluent <br /> Lab ID M312550 <br />' <br /> Aquatic� Toxicity <br /> Test Type EPA/600/4-90/027F Control 625% 25% 50% 75% 100% <br /> Dilution Water Reconstituted DI Water I n!t a i pH 755 7 68 780 7 95 826 8 52 <br />' Species Pimephales Promelas (Larval) 1211 9101 DO 8 31 844 8 50 8 61 8 72 895 <br /> Common Name Fathead Minnow Temp°C 20 4 20 4 204 20 3 27 2 202 <br /> Supplier Aqua Tox <br /> Dilution Volume 2000ml 24 Hrs pH 750 766 775 791 8 22 841 <br /> #Fish per Dilution 20 12120/01 DO 792 772 7 82 825 8 31 8 50 <br /> Dead in Acclimation Tank <1°% Tamp°C 20 3 203 204 203 20 3 20 4 <br /> m <br /> erage Length NA Mortalities 0 0 0 0 0 0 <br /> eDrage Weight NA 48 Hers pH 7 47 764 768 784 818 835 <br /> 12,121/01 DO 756 735 7 57 768 779 764 <br /> Temp°C 20 5 20 6 205 205 204 204 <br /> I'Jortalities C 0 0 0 1 0 <br /> Initial Control Hardness 89 72 Hrs pH 745 759 767 783 8 16 832 <br /> Final Control hardness 89 12/22/01 CO 724 685 6 92 7 1 1 726 736 <br /> Temp°C 202 20 2 204 203 20 3 203 <br /> Mortalities 0 0 0 0 0 1 <br /> 96 Hrs pH 743 756 764 780 815 8 28 <br /> 12/23/01 00 684 6 32 648 968 691 7 02 <br /> Temp°C 206 20 6 205 206 206 206 <br /> Mortalities 0 0 0 0 0 0 <br /> Total Mortalities 0 0 0 0 1 1 <br /> Notes <br /> There were no significant mortalities observed In this test <br /> 1 <br /> • <br /> Ramiro SalgadoD <br /> onna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />