Project (7235) Document or Notice Agency Seeking Comment/ Posting Notice Date Posted Closing Date
Installation of Regenerative Stormwater Conveyances at Bingham Run and Milkhouse Run

Environmental Assessment

Finding of No Significant Impact (FONSI)

National Park Service – Rock Creek Park

May 18, 2011 June 18, 2011
Description of Project

The District Department of the Environment (DDOE) is coordinating the design and construction of a “regenerative storm water conveyance” (RSC) pilot project for two intermittent streams that empty into Rock Creek. A RSC is an open-channel storm water design that utilizes a series of shallow aquatic pools, riffle weir stone grade controls, native vegetation, and underlying sand/compost filter to treat and convert storm water flows to groundwater. Installing RSCs in the Rock Creek watershed will improve water quality by reducing nutrient and sediment pollution from erosion, caused by fast-flowing storm water. The project is intended to demonstrate this technology as an alternative to traditional, more costly, less ecological approaches to stream and outfall erosion, such as piping, rip-rap, and hard structures.

Input Requested
Written and online public comments.

Submit Comments to:
Superintendent, Rock Creek Park
Regenerative Stormwater Conveyance Environmental Assessment / Assessment of Effect
3545 Williamsburg Lane, NW Washington, DC 20008

E-mail comments may be submitted on-line at: http://parkplanning.nps.gov/ROCR 

Commission Action Requested
Approval of preliminary and final site and building plans.

Expected Date of NCPC Action
July 7, 2011

Historic Preservation (section 106) Consultation Process

The project was reviewed by the DC State Historic Preservation Office (SHPO), which determined that the project will have “no adverse effect” on historic properties, with the condition that the National Park Service will consult with the DC SHPO if any potential adverse effects are identified through the EA process.

Other Information