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r <br /> 2.3 DATA ANALYSIS k <br /> All toxicity testing results will be analyzed using an appropriate statistical method to <br /> determine a LC50 and the corresponding 95%confidence limits. <br /> a <br /> ` 3. RESULTS <br /> 3.1 SAMPLE IDENTIFICATION <br /> PMFilter2010 <br /> le . BES Sample Date Testing Period <br /> 1, n Sample# Collection Date Received <br /> 27263 10/12/2010 10/18/2010 10/19-10/2312010 <br /> i <br /> 3.2 SAMPLE DESCRIPTION <br /> Sample Type Solid <br /> Appearance Peaces of rock <br /> Odor No f <br /> 3.3 O. mykiss TEST RESULTS <br /> Client Sample Sample 96=Hour Percent Survival <br /> Identification Control 250 mg/L 500 mg/L 750 mg/L <br /> Filter 2010 1.00 100 100 100 <br /> 3.4 STATISTICAL ANALYSIS <br /> Client Sample Sample 96-Hour Percent Survival <br /> I � <br /> Identification LC50 95% Upper Confidence 95% Lower Confidence <br /> (mg/L) Limit(mg/L) Limit(mg/L) <br /> Filter 2010 >750 NA NA <br /> NA-Not applicable <br /> I <br /> 3.5 NOTES 1 <br /> I <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. I� <br /> BES #27263 Page 3 of 3 <br /> Page 26 of 30 <br /> a <br />