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Management Measures for Agricultur Sources- Facility Wastewater and R ff- Large Confined Ani... Page 3 of S address the management of runoff from manure storage areas. Manure may be stacked in the confined lot or other appropriate area as long as the storage and management of runoff from the confined lot are in accordance with this management measure. If manure is managed as a solid, any drainage from the storage area or structure area or structure should be routed to the runoff storage system. When applied to agricultural lands, manure, stored runoff water, stored facility wastewater, and accumulated solids from the facility are to be applied in accordance with the nutrient management measure. An appropriate waste utilization system to minimize impacts to surface water and protect ground water may be achieved through implementation of the SCS Waste Utilization practice (633). It is recognized that implementation of this measure may increase the potential for movement of water and soluble pollutants through the soil profile to the ground water. It is not the intent of this measure to address.a surface water problem at the expense of ground water. Facility wastewater and runoff control systems can and should be designed to protect ground water. Ground-water protection will also be provided by minimizing seepage to ground water, if soil conditions require further protection, and by using the nutrient and pesticide management measures to reduce and control the application of nutrients and pesticides. Seepage to ground water can be minimized by lining the runoff or manure storage structure with an earthen lining or plastic membrane lining, by constructing with concrete, or by constructing a storage tank. This is not difficult to accomplish and should be achieved in the initial design to reduce costs. For some soils and locations, movement of pollutants to the ground water is not a concern, but site evaluations are needed to determine the appropriate action to take to protect the resources at the site. Operation and Maintenance of This Measure Operation Holding ponds and treatment lagoons should be operated such that the design storm volume is available for storage of runoff. Facilities filled to or near capacity should be drawn down as soon as all site conditions permit the safe removal and appropriate use of stored materials. Solids should be removed from solids separation basins as soon as possible following storm events to ensure that needed solids storage volume is available for subsequent storms. Maintenance Diversions will need periodic reshaping and should be free of trees and brush growth. Gutters and downspouts should be inspected annually and repaired when needed. Established grades for lot surfaces and conveyance channels are to be maintained at all times. Channels should be free of trees and brush growth. Cleaning of debris basins, holding ponds, and lagoons will be needed to ensure that design volumes are maintained. Clean water should be excluded from the storage structure unless it is needed for further dilution in a liquid system. 3. Management Measure Selection This management measure was selected for larger-sized animal production facilities because it can eliminate the pollutants leaving a facility by storing runoff from storms up to and including the 25-year, 24-hour frequency storm. It also uses practices that reduce the amount of water that comes into contact with animal waste materials. It requires that stored runoff and accumulated solids from the facility are managed through an appropriate waste utilization system. Any stored ` water, accumulated solids, processed dead animals, or manure are to be applied in accordance http-//www.epa.gov/owow/nps/MMGI/Chapter2/ch2-2bi.html 2/6/2009