What is the difference between ADEQs BMPs and EPAs BMPs?
ADEQs Best Management Practices (BMPs) are required under the Arizona general permit for nitrogen fertilizer application and the Arizona National Pollutant Discharge Elimination System (NPDES) General permit for CAFOs. The Arizona general permits are enforceable under Arizona Administrative Code. The Arizona general permit for nitrogen fertilizers includes BMPs that address nitrogen fertilizer usage, including manure and commercial fertilizers. The nitrogen fertilizer BMPs are listed on page 3-2 (A.A.C. R18-9-402) of this notebook and include timing, amount, and method of nitrogen applications, management of irrigation water, and tillage practices. The BMPs included in the Arizona General permit for CAFOs are also listed on page 3-2 (A.A.C. R18-9-403) of this notebook. They address solid and liquid manure management. More specifically, the CAFO BMPs regulate the harvest, stockpiling, and disposal of manure, along with the containment of wastewater and proper closure of facilities. EPAs
