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1 <br /> GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto, CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> port# M253-15 Date: 9/19/01 <br /> Advanced GeoEnvzronmental,Inc Date Rec'd. 9/10/01 <br />' 837 Shaw Rd Source: Date Started. 9/11/01 <br /> Stockton CA 95215 Date Completed 9/15/01 <br />' Project. Flag City Chevron Date Sampled 9/10/01 <br /> Time: <br /> Sampler <br /> Sample ID• Effluent <br />' Lab ID: M308860 <br /> Aquatic Toxicity <br /> Test Type EPA/600/4-90/027F Control 625% 25% 50% 75% 100% <br /> Dilution Water Reconstituted DI Water Initial pH 758 762 764 767 773 777 <br /> Species Pimephales Promelas (Larval) 9/11/01 DO 844 853 849 861 865 870 <br /> Common Name Fathead Minnow Temp'C 207 207 208 207 207 208 <br />' Supplier Aqua Tox <br /> Dilution Volume 2000 ml 24 Hrs. pH 754 7 58 761 763 7 68 7 75 <br /> #Fish per Dilution 20 9/12/01 DO 788 770 7 53 793 786 7 80 <br />' W in Acclimation Tank <1% Temp°C 209 20 9 209 208 20 8 208 <br /> age Length NA Mortalities 0 0 0 0 0 0 <br /> Average Weight NA ,fig Hrs. pH 753 756 759 732 766 774 <br /> 9113/01 DO 740 740 6 79 704 690 6 65 <br /> Temp°C 20 5 206 206 205 205 205 <br /> Mortalities 0 0 0 0 0 0 <br /> Initial Control Hardness 93 72 Hrs. pH 750 7 52 7 55 758 764 768 <br /> Final Control Hardness 93 9/14/01 DO 702 6 80 636 6 43 632 5 88 <br /> Temp IC 20 7 207 207 20 7 20 7 207 <br /> Mortalities 0 0 0 0 0 0 <br /> 96 Hrs. pH 746 749 753 7 56 7 61 7 66 <br /> 9/15101 DO 656 639 591 586 575 541 <br /> Temp°C 207 208 20 8 208 20 7 207 <br /> Mortalities 0 0 1 0 0 0 <br /> Total Mortalities 0 0 1 0 0 0 <br /> Notes <br /> There were no significant mortalities observed in this test <br /> Ramiro <br /> �� Sal adra <br /> I g Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />