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Management Measures fof Agricultur 1 Sources - Facility Wastewater and Ru ff- Largs; Confined Ani... Page 7 of 8 .r � H This practice may reduce polluted sunrcial runoff and the loading of organics, pathogens, and nutrients into the surface waters. It decreases the nitrogen content of the surface runoff from feedlots by denitrification. Runoff is retained long enough that the solids and insoluble phosphorus settle and form a sludge in the bottom of the lagoon. There may be some seepage through the sidewalls and the bottom of the lagoon. Usually the long-term seepage rate is low enough, so that the concentration of substances transported into the ground water does not reach an unacceptable level. • k. Application of manure andlor runoff water to agricultural land Manure and runoff water are applied to agricultural lands and incorporated into the soil in accordance with the management measures for nutrients. • 1. Waste utilization (633): Using agricultural wastes or other wastes on land in an environmentally acceptable manner while maintaining or improving soil and plant resources. is Waste utilization helps reduce the transport of sediment and related pollutants to the surface water. Proper site selection, timing of application and rate of application may reduce the potential for degradation of surface and ground water. This practice may increase microbial action in the surface layers of the soil, causing a reaction which assists in controlling pesticides and other pollutants by keeping them in place in the field. Mortality and other compost, when applied to agricultural land, will be applied in accordance with the nutrient management measure. The composting facility may be subject to State regulations and will have a written operation and management plan if SCS practice 317 (composting facility) is used. • m. Composting facility(397):A facility for the biological stabilization of waste organic material. The purpose is to treat waste organic material biologically by producing a humus-like material that can be recycled as a soil amendment and fertilizer substitute or otherwise utilized in compliance with all laws, rules, and regulations. • n. Commercial rendering or disposal services o. Incineration • p. Approved burial sites fi; Cost information Construction costs for control of runoff and manure from confined animal facilities are provided in Table 2-11 90k. The annual operation and maintenance costs average 4 percent of construction costs for diversions, 3 percent of construction costs for settlement basins, and 5 percent of construction costs for retention ponds (DPRA, 1992). Annual costs for repairs, maintenance, taxes, and insurance are estimated to be 5 percent of investment costs for irrigation systems (DPRA, 1992). E r ' http://www.epa.gov/owoyv/nps/MMGI/Chapter2/ch2-2bl.htmi 2/6/2009