The article reviews the multi-year regulatory rollout of federal requirements for reducing sediment and other pollutant runoff from construction sites. The EPA in February adopted its new general permit (CGP) for stormwater management, adopting effluent limitations for construction and development sites. The author discusses enforcement by the EPA and states adopting the federal CGP format. It sets forth the changes in the EPA CGP “best management practices” for sediment and erosion control. The article concludes by assessing the scope of the new CGP, suggesting developers include stormwater management compliance costs as part of due diligence, during a project’s feasibility stage.