Public Works and Environmental Services Alert:
The Carderock / Scotts Run Sewer is a 24-to-30-inch sewer that conveys flow from Fairfax County to the District of Columbia Water and Sewer Authority (DC Water) Potomac Interceptor (PI). Flow crosses under the Potomac River where a 30-inch gravity sewer then conveys the flow to the PI in Potomac, Maryland.
Previously, Fairfax County found corrosion in the manholes, and received complaints of sewer odors in the Carderock Recreation Area. In addition, the county performed a detailed televised inspection of the 30-inch sewer in the recreation area in 2018 and discovered corrosion in the sewer and a long segment of sewer which is apparently sagging.
Major elements of this project include:
The project is located on National Park Service property, in the Carderock Recreation Area in Potomac, MD.
The project is in the permitting phase.