EPA is examining whether some fertilizers or soil conditioners contain potentially harmful containment levels. This includes hazardous wastes, when such wastes can be used as safe and effective substitutes for virgin raw materials. Some fertilizers and soil amendments that are not derived from waste materials can nevertheless contain measurable levels of heavy metals such as:ĮPA's longstanding policy encourages the beneficial reuse and recycling of industrial wastes. Manure runoff from cropland and pastures or discharging animal feeding operations and concentrated animal feeding operations (CAFOs) often reaches surface and groundwater systems through surface runoff or infiltration. Sources and Solutions: Agriculture - Animal manure, excess fertilizer applied to crops and fields, and soil erosion make agriculture one of the largest sources of nitrogen and phosphorus pollution in the country.Įstimated Animal Agriculture Nitrogen and Phosphorus from Manure - Animal agriculture manure is a primary source of nitrogen and phosphorus to surface and groundwater. USDA-Natural Resources Conservation Service (NRCS) - Comprehensive Nutrient Management Planning (CNMP).More information from other organizations Land Application of Sewage Sludge - A Guide for Land Appliers on the requirements of the federal standards for the use or disposal of sewage sludge, 40 CFR Part 503Īgricultural producers can return manure and crop residues to the soil as fertilizers or soil conditioners on their own property unless prohibited by other State or local laws.A Guide to the Federal EPA Rule For Land Application of Domestic Septage to Non-Public Contact Sites.Plain English Guide to the EPA Part 503 Biosolids Rule.
Sewage sludge that is used in agriculture is regulated under the Clean Water Act, and is currently subject to concentration limits for the following metals:
0 kommentar(er)
