For purposes of this part, the terms in items A to D have the meanings given them.
Any person discharging pollutants to surface waters of the state from an animal feedlot or manure storage area who is not regulated by federal requirements under part 7053.0225, subpart 1, shall comply with the following limits after allowance for pollutant removal by a treatment works:
|Five-day biochemical oxygen demand||25 mg/L (arithmetic mean of all samples taken during any calendar month)|
If the discharge is directly to or affects a lake, shallow lake, or reservoir, or to the waters listed in part 7053.0255, subpart 5, the person discharging the pollutants shall comply with the nutrient control requirements in part 7053.0255, subpart 3, items A and B. Feedlots are not considered new or expanded discharges as defined in part 7053.0255, subpart 2.
The effluent limits in item A are not applicable whenever rainfall events, either chronic or catastrophic, cause an overflow from an animal feedlot or manure storage area designed, constructed, and operated:
to meet the effluent limits in item A for rainfall events less than or equal to a 25-year, 24-hour rainfall event for that location; or
to collect and contain the runoff from a 25-year, 24-hour rainfall event for that location.
32 SR 1699
April 1, 2008