Storm Water Management Plan for NSAWhat is Stormwater? Stormwater is runoff water from rain or melting snow that flows across the landscape. Runoff flows off of rooftops, paved areas, bare soil, and lawns. Runoff gathers in increasingly large amounts (from puddles, to ditches, to streams, to lakes and rivers) until it ultimately flows into the ocean. On its journey from puddle to ocean, stormwater picks up and transports many of the pollutants it encounters. These pollutants include dirt, pet wastes, pesticides, fertilizers, automobile fluids (such as oil, gasoline, and antifreeze), deicing products, yard wastes, cigarette butts, and litter, just to name a few. By carrying all these different kinds of pollution into our waterways, stormwater itself becomes a water pollutant. The campus of the National Security Agency has been referred to by some as a "Concrete Jungle." While not very flattering, this description accurately describes much of our landscape. With every significant rain event, thousands of gallons of stormwater flow down our structures and across our parking lots into storm drains that lead directly into the Little Patuxent watershed and ultimately into the Chesapeake Bay. For this reason, it is very important that we act as good stewards of the environment, working to ensure that stormwater runoff is as pollutant free as possible.
In 2007, the NSA was granted a Phase II Small Municipal Separate Storm Sewer Systems (Small MS4) Stormwater Discharge Permit from Maryland Department of the Environment (MDE). In accordance with EPA guidelines for the National Pollutant Discharge Elimination System (NPDES), this permit allows federal facilities to discharge stormwater to waters of the United States, as long as they design and implement several Best Management Practices (BMPs) which will mitigate the harmful effects of pollutants in runoff. The BMPs selected include:
The NSA environmental team began to carry out these BMPs early in CY07. For more information on Stormwater and to find out what you can do in your own neighborhood to prevent stormwater pollution, visit the following web-sites: |
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Date Posted: Jan 15, 2009 | Last Modified: Jan 15, 2009 | Last Reviewed: Jan 15, 2009 |