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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 ANALYSTS <br />Deport# N1b8-14 Date- 6/24/02 <br />Advanced GeoEnvtronmental, Inc Source. Date Rec'd 6/17/02 <br />837 Shaw Rd Date Started- 6/18/02 <br />Stockton CA 95215 Date Completed 6/22/02 <br />Project Flag City Chevron Date Sampled 6/17/02 <br />Time 2 00pm <br />Sampler <br />Sample ID Effluent Replicate <br />Lab ID N306041 <br />Aquatic Toxicity <br />Test Type 96hr static acute <br />Control <br />625% <br />25% <br />50% <br />75% <br />100% <br />Dilution Water Reconstituted DI Water <br />Initial <br />pH <br />778 <br />776 <br />775 <br />778 <br />776 <br />770 <br />Species Pimephales Promelas (Larval) <br />6/18102 <br />DO <br />794 <br />791 <br />783 <br />776 <br />769 <br />760 <br />Common Name Fathead Minnow <br />Temp °C <br />205 <br />205 <br />207 <br />206 <br />205 <br />206 <br />Supplier Aqua Tox <br />Dilution Volume 2,000 ml <br />24 H rs. <br />pH <br />776 <br />792 <br />793 <br />792 <br />790 <br />788 <br />#Fish per Dilution 20 <br />6119/02 <br />DO <br />881 <br />858 <br />865 <br />860 <br />864 <br />860 <br />Dead in Acclimation Tank <1% <br />Temp °C <br />209 <br />208 <br />21 0 <br />21 0 <br />208 <br />209 <br />*age Length NA <br />Mortalities <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />rage Weight NA <br />48 Hrs. <br />pH <br />8 16 <br />833 <br />839 <br />846 <br />848 <br />845 <br />6/20/02 <br />DO <br />841 <br />824 <br />812 <br />8 67 <br />849 <br />797 <br />Temp 'C <br />197 <br />198 <br />195 <br />198 <br />197 <br />197 <br />Mortalities <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Initial Control Hardness 90 <br />72 His <br />pH <br />807 <br />799 <br />824 <br />849 <br />852 <br />851 <br />Final Control Hardness 92 <br />6/21/02 <br />DO <br />832 <br />826 <br />840 <br />829 <br />834 <br />827 <br />Temp°C <br />195 <br />194 <br />194 <br />194 <br />195 <br />195 <br />Mortalities <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />96 Hrs. <br />pH <br />788 <br />799 <br />830 <br />846 <br />855 <br />853 <br />6/22/02 <br />DO <br />758 <br />800 <br />815 <br />785 <br />8 11 <br />822 <br />Temp °C <br />205 <br />204 <br />202 <br />201 <br />201 <br />202 <br />Mortalities <br />0 <br />0 <br />0 <br />0 <br />1 <br />1 <br />Total Mortalities <br />0 <br />0 <br />0 <br />0 <br />1 <br />1 <br />Notes <br />ohjt Bo4na ywala Donna Keller <br />Inorganic Supervisor Certification # 1157 Laboratory Director <br />