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<br />C. <br />PART I <br />Page 4 of 19 <br />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 <br />to the permit limit, the permittee shall report "less 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 <br />equal to the detection limit) are as fol]~ows: <br />Total Residual Chlorine 0.05 mg/1 <br />Total Recoverable Cadmium 0.0003 mg/1 <br />Total Recoverable Copper 0.005 mg/1 <br />Total Recoverable Lead 0.005 mg/1 <br />Total Mercury 0.00025 mg/1 <br />Total Recoverable Nickel 0.05 mg/1 <br />Total Recoverable Selenium 0.01 mg/1 <br />Total Recoverable Silver 0.0002 mg/1 <br />Total Recoverable Zinc 0.05 mg/1 <br />• m/ - Fecal coliform bacteria average ccncentrations shall be determined <br />by the geometric mean of all samples collected during a thirty <br />(30) consecutive day period. The 7 day average shall be <br />determined by the geca~etric wean of all samples taken during a <br />seven (7) day period. <br />n/ - The pctentially dissolved metal fraction is defined in The Basic <br />Standards and Methodologies for Surface Water, 3.1.0 (5 CCR <br />1002-8) as: that portion of a constituent measured from the <br />filtrate of a water and suspended sediment sample that was first <br />treated with nitric acid to a pH of 2 or less and let stand for 8 <br />to 96 hours prior to sample filtration using a 0.4 or 0.45-UM <br />membrane filter. Note the "potentially dissolved" method cannot <br />be used where nitric acid will interfere with the analytical <br />procedure used for the constituent measured. <br />o/ - There shall be no acute toxicity in the effluent from this <br />discharge point. The acute toxicity limitation is exceeded if 1) <br />a statistically significant difference in mortality (at the 95% <br />confidence level) is observed for either species between the <br />control and any dilution less that or equal to the identified IWC <br />or 2) a species mortality in any dilution of effluent (including <br />100% effluent) exceeds 500. <br />• <br />