Industrial Discharge Permit - New Carlisle and St. Joseph Energy Center

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Facility Description: The St. Joseph Energy Center - Water Treatment Facility's (Water Treatment Facility) engages in the production of process well water which is filtered through a greensand system to remove iron and manganese, prior to being pumped to the St. Joseph Energy Center. PART I — EFFLUENT LIMITATION A. Sample Port and Collection Location I. Sample Site #745 is located in the lift station on the east side of the settling lagoon. 2. Any discharge of water or waste having a pH lower than 6.0 S.U. or a pH higher than 11.0 S.U. is prohibited. In addition, the permittee's wastewater discharge shall not exceed the following effluent limitations: Effluent limitations for sam-Dle site 745: - Parameter Daily Maximum Limit (mg/L) Arsenic (mg/L) 0.05 Cadmium (mg/L) Report Chromium (mg/L) Report Copper (mg/L) 0.3 C y anide(mg/L)Re - P ort [Lead (mg/L) _ Report Imercuty (mg/L) F 0.00019 Nickel (mg/L)u ---- r-- Report Silver (mg/L)-- Report Zinc (mg/L) Report Oil and grease (mg/L) 300 Oil and Grease TPH (mg/L) 100 a. Daily Maximum Limit means the maximum allowable discharge limit of a pollutant during a calendar day or any 24-hour period that represents a calendar day. Where Daily Maximum Limits are expressed in units of mass, the daily discharge is the total mass discharged over the course of the day. Where Daily Maximum Limits are expressed in terms of a concentration, the daily discharge is the arithmetic average measurement of the pollutant concentration derived from all measurements taken that day. In the case of samples collected by the grab method, the daily maximum shall be applied as an Instantaneous Maximum Allowable Discharge Limit or as an Instantaneous Minimum Allowable Discharge Limit as follows: i. Instantaneous Maximum Allowable Discharge Limit -- shall mean the 2