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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 /> R�# P344-08 Date. 12/22/03 <br /> Advanced GeoEnvzronmental Date Rec'd 12/10/03 <br /> Source Date Started 12/10/03 <br /> 337 Shaw Rd <br /> Stockton CA 95215 Date Completed 12/14/03 <br /> Project Flag City Chevron Date Sampled 12/9/03 <br /> Time <br /> Sampler <br /> Sample ID. Effluent <br /> Lab ID P310844 <br /> Aquatic Toxicity <br /> Test Type 96 hr static acute Control 625% 25% 50% 75% 100% <br /> Dilution Water Reconstituted DI Water Initial pH 79 80 7 8 76 76 7 6 <br /> Species Pimephales Promelas (Larval) 12/10/03 DO 88 8 7 84 8 7 8 8 8 6 <br /> Common !Name Fathead Minnow Temp°C 194 194 194 195 194 194 <br /> Supplier Aqua Tox <br /> Dilution Volume 2000ml 24 Hrs. pH 80 8 0 7 8 77 7 6 7 6 <br />#Fish per Dilution 20 12/11/03 DO 82 8 0 7 9 7 6 76 7 5 <br /> Dead in Acclamation Tank ¢1% Temp IC 195 196 195 195 19 5 197 <br /> A Length NA Mortalities 0 0 0 0 0 0 <br /> Av a Weight NA 48 H rs pH 79 80 7 7 7 8 7 6 7 6 <br /> 12/12/03 DO 84 86 85 86 87 84 <br /> Temp°C 205 205 206 20 7 20 6 206 <br /> Mortalities 0 0 0 0 0 0 <br /> Initial Control Hardness 85 72 Hrs. pH 79 so 7 8 77 7 6 7 6 <br /> Final Control Hardness 85 12/13/03 DO 85 84 85 8 3 82 8 4 <br /> Temp°C 191 192 192 192 191 192 <br /> Mortalities 0 0 0 0 0 0 <br /> 96 Hrs. pH 80 80 78 77 76 75 <br /> 12/14/03 DO 86 85 85 84 83 79 <br /> Temp IC 196 197 196 197 197 197 <br /> Mortalities <br /> Total Mortalities 0 0 0 0 0 0 <br /> Notes <br /> There were no significant mortalities observed In this test <br /> A"'L '- <br /> Kantt Gandhi Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />