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Geot. .na1Y tical Laboratories,Tnc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# L164-11 Date: 6/27/00 <br /> San Joaquin County Environmental Health Source: Date Rec'd: 6/12/00 <br /> 304 E.Weber 3rd Floor Date Started: 6/13/00 <br /> Stockton CA 95202 Date Completed: 6/17/00 <br /> Project: G&L Brock Construction 4145 Calloway Ct Stockton Date Sampled: 6/9/00 <br /> Time: <br /> Sampler: Alison Youngblood <br /> Sample ID: Ay 6-9D,Ay 6-9E <br /> Lab ID: L21617,L21618 <br /> Aquatic Toxicity <br /> Test Type: Polisini&Miller CDFG 1988 Control 62.5mg/L 125 mg/1-250 mg/1-500 mg/1-750 mg/L <br /> Dilution Water: Reconstituted DI Water Initial pH 7.39 7.25 7.08 6.93 6.78 6.55 <br /> Species: Pimephales Promelas (Juvenile) 6/13/00 D.O. 7.96 8.05 8.09 8.20 8.11 8.17 <br /> Common Name: Fathead Minnows Temp.°C 20.8 20.7 20.7 20.5 20.5 20.6 <br /> Supplier: Aquatic Resources <br /> Dilution Volume: 20000 ml 24 HCS. pH 7.30 7.18 7.03 6.77 6.59 6.54 <br /> #Fish per Dilution:20 6/14/00 D.O. 7.74 7.88 7.75 8.04 7.96 8.04 <br /> Dead in Acclimation Tank: <1% Temp.°C 21.0 20.8 21.2 21.1 20.9 20.9 <br /> Average Length: 34 mm Mortalities 0 0 0 0 0 0 <br /> Average Weight: 0.45 g 48 HCS. pH 7.26 7.15 7.04 6.53 6.52 6.39 <br /> 6/15/00 D.O. 7.54 7.73 7.48 7.81 7.73 7.84 <br /> Temp.°C 19.8 19.8 20.1 20.0 19.9 19.8 <br /> Mortalities 1 0 0 0 0 0 <br /> Initial Control Hardness 42 72 HCS. pH 7.22 7.11 7.00 6.44 6.35 6.25 <br /> Final Control Hardness 42 6/16/00 D.O. 7.33 7.42 7.27 7.67 7.53 7.62 <br /> Temp.°C 20.5 20.3 20.3 20.4 20.4 20.5 <br /> Mortalities 0 0 0 0 0 0 <br /> 96 HCS. pH 7.14 7.05 6.93 6.41 6.26 6.16 <br /> 6/17/00 D.O. 7.16 7.28 7.11 7.43 7.34 7.42 <br /> Temp.°C 20.8 20.7 20.9 20.8 20.8 20.9 <br /> Mortalities 0 1 0 0 0 0 <br /> Total Mortalities 1 1 0 0 0 0 <br /> Notes <br /> There were no significant mortalities in this test. LC50 >750 mg/L. <br /> ��miro Salga 0 Donna Keller J <br /> Chemist Certification # 1157 Laboratory Director <br />