These rules establish the methods used to measure the phosphorous discharge from the Everglades Agricultural Area (EAA), as required by the Everglades Forever Act, Section 373.4592, Florida Statutes. Under this statute the District assesses compliance with a 25% reduction in phosphorus load in discharges in comparison with the phosphorus levels measured during an established period prior to the Best Management Practices program being implemented. Since the rules were last amended the District has completed several projects, such as the STA-3/4 expansion, the STA-2 expansion, the A-1 Flow Equalization Basin, and the Lake Okeechobee Diversion Projects. These projects affect the boundary inflow and outflow points used in these calculations.