The Best Management Practices Treatment for Removal on an Annual basis Involving Nutrients in Stormwater is a Microsoft Excel-based model developed by the University of Central Florida Stormwater Management Academy for estimating the effectiveness of a range of stormwater BMPs. BMPTRAINS is capable of calculating pre-development and post-development stormwater nutrient loadings. This model offers users to evaluate pollutant removal efficiencies for individual BMPs or multiple BMPs designed in series as part of a BMP Treatment Train. Calculations are based on over 35 years of monitoring and research projects conducted primarily within the State of Florida. BMPTRAINS is supported by the Florida Department of Environmental Protection and the five Water Management Districts as a tool to document loadings and BMP load reductions.