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GeoAnalytical Laboratories, Inc. <br />' 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# M169-16 Date. 6/26/01 <br /> Advanced GeoEnvrronmental, Inc source. DateRec'd 6/18/01 <br />(837 Shaw Rd Date Started 6/19/01 <br /> Stockton CA 95215 Date Completed. 6/23/01 <br /> Project Flag City Chevron Date Sampled 6/18/01 <br /> I Time 10 OOAM <br /> Sampler <br /> Sample ID: Flag City Chevron-Effluent <br />' Lab ID• M306046 <br /> Aquatic Toxicity <br /> Test Type EPA/600/4-90/027F Control 625% 25% 50% 75% 100% <br />'Dilution Water Reonstituted DI Water Initial pH 778 7 69 728 718 7 06 6 97 <br /> Species Pimephales Promeias (Larval) 6119/01 DO 815 822 849 857 870 8 81 <br /> Common Name Fathead Minnow Tamp°C 201 202 201 200 199 197 <br />'Supplier Aqua Tox <br /> Dilution Volume 2000 ml 24 Hrs pH 772 760 725 715 704 694 <br /> #Fish per Dilution 20 6/20/01 DO 789 768 750 759 786 799 <br /> Pain Acclimation Tank Temp°C 205 206 207 206 206 206 <br /> ge Length NA Mortalities 0 0 0 0 0 0 <br /> Average Weight NA 48 Hrs. pH 770 758 722 709 700 6 B9 <br /> 6/21/01 DO 773 730 722 734 743 720 <br /> Temp°C 202 20 3 203 202 202 202 <br /> Mortalities 0 0 0 0 0 0 <br /> nitial Control Hardness 92 72 Hrs, pH 768 754 720 709 696 688 <br /> [nal Control Hardness 92 $/22/01 DO 744 708 691 682 665 653 <br /> Temp°C 208 208 207 207 207 207 <br /> Mortalities 0 0 0 0 0 0 <br />' 96 Hrs pH 768 748 717 707 693 685 <br /> 6/23/01 DO 724 678 640 732 613 589 <br />' Temp'C 204 204 204 204 204 204 <br /> Mortalities 0 0 0 0 0 0 <br /> Total Mortalities 0 0 0 0 0 0 <br /> Notes <br /> There were no significant mortalities observed In this test <br /> 1 <br /> Ramiro Salgado Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />