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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 GeoEnvironmental Date Rec'd 12/10/03 <br /> 537 Shaw Rd Source Date Started 12/10/03 <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 Replicate <br /> Lab ID P310844 <br /> Aquatic Toxicity <br /> Test Type 96 hr sttic acute Control 625% 25% 50% 75% 100% <br /> Dilution Water Reconstituted DI Water Initial pH 8 0 79 78 77 7 6 7 6 <br /> Species Ptmephales Promelas (Larval) 12/10/03 DO 88 8 9 87 86 8 4 85 <br /> Common Name Fathead Minnow Temp°C 195 194 195 195 194 194 <br /> Supplier Aqua Tox <br /> Dilution Volume 2000ml 24 Hrs pH 80 79 78 7 7 7 6 7 6 <br />�Ffsh per Dilution 20 12/11/03 DO 82 8 0 79 7 8 7 5 7 4 <br /> Dead in Acclimation Tank <1% Temp*C 195 19 6 196 197 198 197 <br /> A Length NA Mortalities 0 0 0 0 0 0 <br /> A e Weight NA 48 Hrs pH 79 7 9 78 7 6 7 5 7 6 <br /> 12/12/03 DO 84 85 85 86 85 84 <br /> Temp°C 206 20 5 206 207 206 206 <br /> Mortalities 0 0 0 0 0 0 <br /> Initial Control Hardness 85 72 H rs. pH 79 7 9 7 8 7 6 7 5 7 6 <br /> Final Control Hardness 85 12/13/03 D O 84 81 8 0 82 8 3 8 3 <br /> Temp'C 190 191 191 191 192 192 <br /> Mortalities 0 0 0 0 0 0 <br /> 95 Hrs pH 79 79 78 76 75 76 <br /> 12/14/03 DO 80 82 85 85 84 84 <br /> Temp°C 197 198 198 197 197 198 <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 /> ti Z <br /> Kanti Gandhi Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />