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NSA Goes Green

Nsa Goes Green.  At the National Security Agency, we are committed to protecting the environment.
leafNSA GOES GREEN At the National Security Agency, we are committed to protecting the environment.

Green Roofs Coming Soon...

graphic depiction of a green roofIn late 2009, NSA launched its most ambitious "green initiative" to date. The Green Roof Project will cover a roof with vegetation and a growing medium, planted over a waterproofing membrane. This initial project included removing 2.7 million pounds of concrete roof pavers and replacing them with a state of the art waterproofing sealant, expansion joint system and a combination of green roof (vegetative ground cover) and hard surface pavement. Removing the concrete pavers provided a unique recycling opportunity for the Agency. Partnering with the Maryland Department of Natural Resources (MDNR), the NSA identified a reuse option that would benefit the Chesapeake Bay: using them to create an artificial reef. As a result, the pavers were transported and loaded onto a barge in the Severn River and dropped at a location selected by the Maryland Artificial Reef Program and the MDNR.

Artificial reefs have been constructed for the purpose of enhancing fish populations in Maryland's tidal waters for the past 40 years. The Maryland Artificial Reef Program was implemented to provide:

    picture of a deliver of materials for the green roof
  • Enhanced habitats for fish and benthic organisms associated with reefs
  • Increased reef biological carrying capacity
  • Enhanced biological diversity
  • Increased fish populations
  • Sustainable fishing opportunities

This project will improve storm water management, cut down on the "heat island" effect, and provide membrane longevity. The green roof areas will offer amenities such as picnic tables and wall seating, a trellis garden structure, shaded pavilions, walking paths and relaxing landscaping. When complete, this renovated space will create a relaxing outdoor atmosphere for the workforce.


Date Posted: Sep 08, 2010 | Last Modified: Sep 08, 2010 | Last Reviewed: Sep 08, 2010