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PART I <br />Page 4 of 19 <br />C. FOOTNOTES <br />1/ - When the most sensitive analytical method which complies with Part <br />I.F.2, of the permit has a detection limit greater than or equal to <br />the permit limit, the permittee shall report "leas than the <br />detectable limit," as appropriate. Such reports shall not be <br />considered as violations of the permit limit. <br />The present lowest method detection limits for specific parameters <br />(which have limitations which are, in some cases, less than or equal <br />to the detection limit) are as follows: <br />Total Residual Chlorine 0.05 mg/1 <br />Potentially Dissolved Cadmium 0.0003 mg/1 <br />Potentially Dissolved Copper 0.005 mg/1 <br />Potentially Dissolved Lead 0.005 mg/1 <br />Total Mercury 0.00025 mg/1 <br />Potentially Dissolved Nickel 0.05 mg/1 <br />Potentially Dissolved Silver 0.0002 mgll <br />Potentially Dissolved Zinc 0.05 mg/1 <br />m/ - Fecal coliform bacteria average concentrations shall be determined by <br />the geometric mean of all samples coller_ted during a thirty (30) <br />consecutive day period. The 7 day average shall be determined by the <br />geometric mean of all samples taken durin<a a seven (7) day period. <br />n/ The potentially dissolved metal fraction is defined in The Basic <br />Standards and Methodologies for Surface Water 3.1.0 (5 CCR 1002-8) <br />as: that portion of a constituent measured from the filtrate of a <br />water and suspended sediment sample that was first treated with <br />nitric acid to a pH fo 2 or less and let stand for 8 to 96 hours <br />prior to sample filtration using a 0.4 or 0.45-UM membrane filter. <br />Note the "potentially dissolved" method cannot be used where nitric <br />acid will interfere with the analytical procedure used for the <br />constituent measured. <br />o/ There shall be no acute toxicity in the effluent from this discharge <br />point. The acute toxicity limitation is exceeded if 1) a <br />statistically significant difference in mortality (at the 95% <br />confidence level) is observed for either species between the control <br />and any dilution less than or equal to the identified IWC or 2) a <br />species mortality in any dilution of effluent (including 100Y. <br />effluent) exceeds SO~G. <br />Corrected U3/16/92 <br />