Section 58.01.09.250 - WATER QUALITY PROTECTIONThe following minimum design and performance standards are a baseline for protection of public health and water quality. These standards apply to all facilities and are to be reflected in the permit unless the Director determines, based on an applicant's site specific information, that compliance with a specific standard is not necessary to protect water quality or the public health. Other conditions, as determined by the Director to be necessary to protect water quality, may be included in a permit.
01.Animal Waste Management System Design Criteria. A facility's animal waste management system must: a. Be designed and constructed in accordance with NRCS or the American Society of Agricultural Engineers standards, whichever is most stringent;b. Contain the maximum expected operating water balance and the twenty-five (25) year twenty-four (24) hour rainfall event and the one (1) in five (5) year winter runoff;c. Provide capacity to store the peak volume of process wastewater generated during a six (6) month period;d. Provide a one (1) foot freeboard in addition to the storage provisions specified in Subsections 250.01.b. and 250.01.c.;e. Have impoundments, other than for emergency runoff, containing or designed to contain process wastewater for efficient leak detection and not be located in the one-hundred (100) year floodplain; andf. Have seepage rates for impoundments no greater than 1x10-7 cm/sec.02.Water Quality Monitoring. Ground water and/or leak detection monitoring must be conducted for every facility with a liquid storage impoundment and be designed to give the earliest possible detection of an unauthorized discharge to ground water.03.Discharges. Facilities must be constructed, operated and maintained to not cause unauthorized discharges.04.Spill Contingency Plan. Facilities must prepare a discharge response strategy that describes procedures and methods to be implemented for the abatement and cleanup of any pollutant.05.Stockpile Areas. Animal waste stockpile areas, including compost areas, must be constructed to ensure that all water and precipitation, which comes into contact with the stockpiles, does not enter waters of the state.Idaho Admin. Code r. 58.01.09.250