Potomac River Tunnel EA

The District of Columbia Water and Sewer Authority (DC Water) is proposing to construct the Potomac River Tunnel project on lands administered by the National Park Service (NPS). To document compliance required for issuance of construction permits for the project, the NPS and DC Water are seeking public comments on an Environmental Assessment (EA) prepared pursuant to the National Environmental Policy Act (NEPA). The Potomac River Tunnel is a major component of DC Water's Combined Sewer System Long Term Control Plan, also known as the DC Clean Rivers Project. The project would provide control for combined sewer overflow (CSO) outfalls along the Potomac River in Washington, DC. The project is needed to reduce CSOs that contribute to water quality impairment of the Potomac River and ultimately the Chesapeake Bay; and to comply with the 2005 Federal Consent Decree entered into by DC Water, the District of Columbia, the US Environmental Protection Agency, and the US Department of Justice, as amended January 2016. The proposed controls are estimated to reduce CSOs to the Potomac River by 93% by volume and limit their frequency from approximately 74 events to 4 events in a year of average rainfall.

The ongoing participation of the public is very important to the success of this project. We invite you to attend an open house to discuss the project with NPS and DC Water staff, get your questions answered, and learn more about the project and the EA. For more information or for individuals requiring special assistance at the meeting please contact DC Clean Rivers Project Public Outreach at (202) 787-4717 or by email at dccleanrivers@dcwater.com.

OPEN HOUSE
Wednesday, November 14, 2018
6:00 p.m. - 8:00 p.m.
West End Library
2301 L Street NW
Washington, DC 20037

Document Content:

Potomac_River_Tunnel_EA_508_2018_10_25.pdf   (14.8 MB, PDF file) Potomac_River_Tunnel_EA_Appendix_A-D_508_2018_10_25.pdf   (17.0 MB, PDF file) Disclaimer: Links within the above document(s) were valid as of the date published. Note: Some of the files may be in PDF format and can be viewed using the Adobe Acrobat Reader software. You may download a free copy of from Adobe Systems.