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' ri <br /> GeoAnaiytical Laboratories, Inc. <br />' 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br />,*,14 P177-17 Date 7/8/03 <br /> Advanced GeoEnvironmental, Inc Date Rec'd 6/26/03 <br /> Source Date Started 6/27/03 <br /> 837 Shaw Rd' <br /> Stockton CA 95215 Date Completed 7/1/03 <br /> Project Flag City Chevron Date Sampled 6/25/03 <br />' <br /> Time <br /> Sampler <br /> Sample ID Replicate <br />'Lab ID: P306062 <br /> Aquatic Toxicity <br /> Test Type 96hr static acute Control 625% 25% 50% 75% 100% <br />'Dilution Water Reconstituted DI Water Initial pH 81 80 77 7 6 76 75 <br /> Species PEmephales Promelas (Larval) 6/27/03 D O 87 86 82 7 7 73 65 <br /> Common Name Fathead Minnow Temp°C 207 207 20 6 205 206 206 <br /> F <br /> upplier Aqua Tox <br /> lution Volume 2,000ml 24 Hrs pH 81 83 8 4 8 5 8 5 85 <br /> #Fish per Dilution 20 6/28/03 DO 85 81 80 74 7 0 73 <br /> D in Acclimation Tank Temp°C 207 206 20 6 207 207 206 <br /> ge Length NA Mortalities 0 0 0 0 0 0 <br /> Average Weight NA 48 Hrs pH 81 8 3 85 85 85 8 5 <br /> 6129/03 DO 86 79 77 77 69 72 <br /> Temp°C 208 208 207 207 207 208 <br /> Mortalities 0 0 0 0 0 0 <br /> Control Hardness 87 72 HCS pH 8 1 8 3 8 5 8 6 8 6 8 6 <br />,Initial <br /> Final Control Hardness 87 6/30/03 DO 83 85 8 6 86 86 86 <br /> Temp°C 207 20 6 205 205 206 206 <br /> Mortalities 0 0 0 0 0 2 <br /> f96 HCS pH 81 83 85 86 86 86 <br /> 7/1103 DO 88 89 89 89 90 91 <br /> Temp°C 205 202 203 202 205 207 <br /> Mortalities 0 0 0 2 3 1 <br /> Total Mortalities 0 0 0 2 3 3 <br /> Notes <br /> There were no significant mortalities observed In this test <br /> I <br /> Kanti Gandhi Donna Keller <br /> IChemist Certification # 1157 Laboratory Director <br />