Green infrastructure refers to, among other things, the utilization of sustainable forestry and agriculture as elements of a cost-effective compliance strategy for meeting the National Pollutant Discharge Elimination System (“NPDES”) permitting requirements, as authorized by the Clean Air Act (“CWA”), and its state counterparts. Natural systems and processes such as constructed wetlands and phytoremediation have long been used as tools for meeting NPDES discharge standards; however, the advent of the Environmental Protection Agency’s (“EPA’s”) more rigorous “Phase II” stormwater management requirements has spurred renewed interest in such systems among a new and more expansive set of permittees.