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GeoAnalytical Laboratories, Inc. <br /> I 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Ort# I.342-26 Date 12/14/00 <br /> Advanced GeoEnvironmental, Inc Date Rec'd 12/7/00 <br /> Source Date Started 12/8/00 <br /> 4005 North Wilson Way Date Completed 12/12/00 <br /> Stockton CA 95205 <br /> Project Flag City Chevron Date Sampled 12/6/00 <br /> Time <br /> Sampler- <br /> Sample <br /> amplerSample ID Effluent Replicate <br /> Lab ID L312183 <br /> Aquatic Toxicity <br /> Test Type EPA/600/4-90/027F Control 625% 25% 50% 75% 100% <br /> Dilution Water Reconstituted Dl Water Initial pH 7 52 746 736 7 28 720 707 <br /> Species Pimephales Promelas (Larval) 12/8/00 DO 893 8 81 8 65 853 8 45 8 17 <br /> Common Name Fathead Minnow Temp°C 197 198 19 6 196 198 198 <br /> Supplier Aquatic Resources <br /> Dilution Volume 2000ml 24 Hrs PH 747 7 43 7 34 723 7 17 700 <br /> #Fish per Dilution 20 12/9/00 DO 8 51 864 854 8 19 8 05 7 84 <br /> 14D in Acclimation Tank <11% Temp°C 201 201 200 202 199 198 <br /> ge Length NA Mortalities 0 0 0 0 0 1 <br /> Average Weight NA 48 Hrs pH 7 46 739 730 7 18 713 6 95 <br /> 12/10100 DO 822 8 16 8 21 7 81 7 63 751 <br /> Temp°C 20 4 204 205 205 205 203 <br /> Mortalities 0 0 0 1 0 0 <br /> Initial Control Hardness 89 72 Ht's pH 7 41 7 35 7 25 716 710 6 89 <br /> Final Control Hardness 89 12/11/00 D O 7 96 7 85 792 7 54 7 25 7 09 <br /> Temp1C 200 199 198 197 199 199 <br /> Mortalities 0 0 0 0 0 0 <br /> I96 Ht's pH 742 733 721 711 707 686 <br /> 12/12/00 DO 769 7 53 762 7 28 6 87 668 <br /> I Temp'C 197 197 195 198 197 198 <br /> Mortalities 0 0 0 0 0 0 <br /> Total Mortalities 0 0 0 1 0 1 <br /> I Notes <br /> Donna Keller <br /> amiro Salgad <br /> Chemist Certification # 1157 Laboratory Director <br />