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' GeoAnal tical Laboratories Inc.y - <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Ort# P259-10 Date 9/23/03 <br /> Advanced Geo$nvironmental <br /> Date Recd 9/16/03 <br /> 837 Shaw Rd Source Date Started 9/16/03 <br />' Stockton CA 95215 Date Completed 9/20/03 <br /> Project Flag City Chevron Date Sampled 9/15/03 <br /> Time 03 10p <br /> Sampler <br /> Sample ID Effluent <br /> Lab ID P308558 <br /> Aquatic Toxicity <br /> Test Type 96hr static acute Control ° ° ° <br /> 6 25/° 25/0 50/0 75/° 100/° <br /> Dilut,on Water Reconstituted DI Water initial pH 81 8 0 7 8 7 7 7 7 7 7 <br />' Species Pimephales Promeias (Larval) 9/16/03 DO 82 8 0 8 0 7 7 7 7 74 <br /> Common !Name Fathead Minnow Temp°C 206 206 206 204 204 203 <br /> Supplier Aqua Tox <br />' Dilution Volume 2000ml 24 H rs pH 80 8 0 82 82 82 8 1 <br /> #Fish per Dilution 20 9/17/03 DO 8 7 8 3 8 0 7 8 7 9 7 9 <br /> Dead in Acclimation Tank < 1% Temp°C 200 200 200 200 200 200 <br /> ge Length Mortalities 0 0 0 0 0 0 <br /> rage Weight 48 Mrs pH 8 1 8 2 8 4 8 5 8 5 8 5 <br /> 9/18/03 DO 84 88 87 84 83 83 <br /> Temp°C 20 7 206 204 20 4 20 4 205 <br /> Mortalities 0 0 0 0 0 0 <br /> Initial Control Hardness 88 72 HI's pH 8 0 8 1 8 4 8 5 8 5 8 5 <br />' Final Control Hardness 88 9/19/03 D O 8 5 8 7 8 7 8 5 8 7 8 5 <br /> Temp°C 200 200 200 201 20 1 200 <br /> Mortalities 0 0 0 0 0 1 <br />' 96 HI's pH 80 81 84 85 84 84 <br /> 9/20/03 DO 84 82 84 83 82 81 <br /> Temp°C 20 4 204 203 20 3 202 20 3 <br />' Mortalities 0 0 0 0 0 0 <br /> Total Mortalities 0 0 0 0 0 1 <br /> Notes <br /> There were no Significant Mortalities Observed in this test <br /> 917 <br /> Kanti Gandhi Donna Keller <br /> IChemist Certification # 1157 Laboratory Director <br />