Purpose: | The objective of this initiative is to import a basic understanding of the causes of stormwater pollution and the types of activities that require stormwater permits, as well as to provide an invaluable reference tool for the General Services Administration facility managers. The NRC is integrating this environmental initiative throughout the organizational culture by actively encouraging everyone in the region to consider the impact of their projects, activities and operations on stormwater and the environment. NRC's comprehensive management plan compiles and disseminates best management practices and stormwater pollution prevention measures for all GSA facilities within NRC. NRC believes that full implementation of this stormwater management plan will contribute significantly to overall improvement of water quality of local streams, rivers, and the Chesapeake Bay (5).
One major project that the NRC is involved with is the "greening" of the Environmental Protection Agency's new headquarters in the District's Federal Triangle. NRC's horticulturist and EPA staff began discussing ways to incorporate sustainable landscaping practices in the complex. The idea was driven in part by the Chesapeake Executive Council's directive on managing stormwater on state, federal, and district-owned property. The demonstration project, dubbed "Greening EPA" and jointly funded by the two agencies, is being conducted in phases, with each phase demonstrating more advanced and aggressive environmental measures. The Low Impact Development Center, a nonprofit organization that specializes in such projects, and John Shorb Landscaping are contractors for the effort. Elements for the project will include:
"Green roofs," which use specialized lightweight plants to absorb rainfall. Once the vegetation is saturated, runoff is collected through roof drains. Green roofs also help conserve energy in buildings and reduce urban heat-island effects.
High-efficiency irrigation using rain barrels and water stored under permeable pavers. This system also uses timers and moisture meters to reduce excess watering (6). |