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BES <br />2.3 DATA ANALYSIS <br />All toxicity testing results will be analyzed using an appropriate statistical method to determine a <br />LC50 and the corresponding 95% confidence limits. <br />3. RESULTS <br />3.1 SAMPLE IDENTIFICATION <br />Client BES <br />Sample Identification Sample # <br />Sample Collection <br />Date <br />Date <br />Received <br />Testing Period <br />5504789 24548 <br />11/02/2007 <br />11/05/2007 <br />11/06/07-11/10/07 <br />3.2 P.promelas TEST RESULTS <br />Client Sample 96 -Hour Percent Survival <br />Sample Identification Control 250 mg/L 500 mg/L 750 mg/L <br />5504789 100 100 100 100 <br />3.3 STATISTICAL ANALYSIS <br />Client <br />Sample Identification <br />Sample 96 -Hour Percent Survival <br />LC50 <br />(mg/L) <br />95% Upper Confidence <br />Limit (mg/L) <br />95% Lower Confidence <br />Limit (mg/L) <br />5504789 <br />>750 <br />NA <br />NA <br />NA - Not applicable <br />3.8 NOTES <br />The photocopied data sheet(s) and chain -of -custody for testing, are attached. If you have any <br />questions concerning this report please contact the BES laboratory, (925) 682 — 7200. <br />BES #24548 Page 3 of 3 <br />