Biological Nutrient Removal Project Operations Center
Providence RI USA
Narragansett Bay Commission
in collaboration with
L+A has designed a working, educational landscape that re-uses demolition debris in the construction of a “landfill garden” of concrete planks (from an ash tank that previously stood on the site) and crushed asphalt (from a parking lot that formerly occupied the site also). The use of these materials in the garden diverted approximately 90 tons of debris from the Rhode Island Central Landfill. The garden, located to the south of the Operations Center, performs as a water retention and filtration system integrated with an outdoor room for staff and for educational groups that frequently tour the center.
A line of Sassafras albidum, common sassafras, meanders across the undulating earthwork mounds on the north side of the Operations Center. The Sassafras Meander establishes a resilient, dynamic scrim of vegetation that initiates the re-population of the species on Sassafras Point, the historic name for the peninsula of land on which the Narragansett Bay Commission is situated.
The Rhode Island State Building Code Standards Committee approved an appeal to allow the use of an extensive green roof on the Narragansett Bay Commission Operations Building on the shore of Narragansett Bay in Providence. This is the first green roof to be approved under the 2006 IBC Building Code. This victory establishes a national precedent and is an important milestone for the approval of extensive green roof systems in hurricane prone zones throughout the United States.
On-site infiltration, retention, and reuse of rainwater supports the project’s initiative of reducing contaminated urban and suburban runoff into Narragansett Bay, the second largest bay on the East coast of The United States. The on-site management of water contributed to the Operations Building being recently certified as eligible for LEED Gold Rating. The Landfill Garden was published on World Landscape Architecture, 21 August 2012