Industrial Discharge Permit - St. Joseph Energy Center

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Instantaneous Maximum Allowable Discharge Limit or as an Instantaneous Minimum Allowable Discharge Limit as follows: i. Instantaneous Maximum Allowable Discharge Limit— shall mean the maximum concentration or loading of a pollutant allowed to be discharged at any time, determined from analysis of any grab or composite sample collected, independent of the industrial flow rate and the duration of the sampling event. H. Instantaneous Minimum Allowable Discharge Limit -- shall mean the minimum concentration of a pollutant allowed to be discharged at any time, determined from analysis of any grab or composite sample collected, independent of the industrial flow rate and the duration of the sampling event, The lower pH limit is applied as an Instantaneous Minimum Allowable Discharge Limit. 2. Monthly Average Limit means the maximum allowable average of daily discharges over a calendar month, calculated as the sum of the concentrations of all daily discharges measured during a calendar month divided by the number of daily discharges measured that month. 3. Discharge ,Screening Level Limitations have been established to evaluate the need for a limitation for pollutants that are not listed in the Effluent Limitation section of the permit. If a permittee has no limit for a particular pollutant, but observes, through monitoring and analysis, a concentration of that pollutant greater than the listed Discharge Screening Level concentration found in the table below, the permittee shall notify the Control Authority, This notification shall be made in writing within five days of observing the pollutant concentration. Parameter F iiaily Maximum Screening Level (mg/L) (Arsenic (mg/L) 0.2 Cadmium (mg/L) 0.1 Chromium (mg/L) 2.0 Copper (mg/L) - - - - Cyanide (mg/L) 1 0.3 0.1 Lead (mg/L) 0.3 Nickel (mg/L) 0.3 Silver (mg L.) 0.2 Zinc (zng/L) 0.3