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i Management Measures for Agricultur Sources- Facility Wastewater and Runf- Large Confined Ani... Page 2 of 8 Under the Coastal Zone Act Reauthorization Amendments, States are subject to a number of requirements as they develop coastal nonpoint programs in conformity with this measure and will have some flexibility in doing so. The application of management measures by States is described more fully in Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, published jointly by the U.S. Environmental Protection Agency (EPA) and the National Oceanic and Atmospheric Administration (NOAA) of the U.S. Department of Commerce. A confined animal facility is a lot or facility (other than an aquatic animal production facility)where the following conditions are met: • Animals (other than aquatic animals) have been, are, or will be stabled or confined and fed or maintained for a total of 45 days or more in any 12-month period, and • Crops, vegetation forage growth, or post-harvest residues are not sustained in the normal growing season over any portion of the lot or facility. Two or more animal facilities under common ownership are considered, for the purposes of these guidelines, to be a single animal facility if they adjoin each other or if they use a common area or system for the disposal of wastes. Confined animal facilities, as defined above, include areas used to grow or house the animals, areas used for processing and storage of product, manure and runoff storage areas, and silage storage areas. Facility wastewater and runoff from confined animal facilities are to be controlled under this management measure (Figure 2-7). Runoff includes any precipitation (rain or snow)that comes into contact with any manure, litter, or bedding. Facility wastewater is water discharged in the operation of an animal facility as a result of any or all of the following: animal or poultry watering; washing, cleaning, or flushing pens, barns, manure pits, or other animal facilities; washing or spray cooling of animals; and dust control. 2. Description The problems associated with animal facilities result from runoff, facility wastewater, and manure. For additional information regarding problems, see Section I.F.3 of this chapter. Application of this management measure will greatly reduce the volume of runoff, manure, and facility wastewater reaching a waterbody, thereby improving water quality and the use of the water resource. The measure can be implemented by using practices that divert runoff water from upslope sites and roofs away from the facility, thereby minimizing the amount of water to be stored and managed. Runoff water and facility wastewater should be routed through a settling structure or debris basin to remove solids, and then stored in a pit, pond, or lagoon for application on agricultural land (Figure 2-8). If manure is managed as a liquid, all manure, runoff, and facility wastewater can be stored in the same structure and there is no need for a debris basin. For new facilities and expansions to existing facilities, consideration should be given to siting the facility: • Away from surface waters; • Away from areas with high leaching potential; and • In areas where adequate land is available to apply animal wastes in accordance with the nutrient management measure. This management measure does not require manure storage structures or areas, nor does it specify required manure management practices. This management measure does, however, http://www.epa.gov/owow/nps/MMGI/Chapter2/ch2-2bl.html 2/6/2009