Chesapeake Bay and Local TMDL Action Plans - Get Involved

George Washington Memorial Parkway » Chesapeake Bay and Local TMDL Action Plans - Get Involved » Document List

The Virginia Stormwater Management Act, the Virginia Stormwater Management Program Permit regulations, and the Clean Water Act regulate discharges from municipal separate storm sewer systems (MS4) as point source discharges. Publicly owned systems such as storm drains, pipes, ditches or swales collecting or moving water to surface waters must obtain permit coverage and develop a stormwater management program. MS4 programs must be designed and implemented to control the discharge of pollutants from their storm sewer system to the maximum extent practicable in a manner that protects the water quality in nearby streams, rivers, wetlands and bays.

The Virginia general MS4 permit (effective 2018-2023) requires the George Washington Memorial Parkway (GWMP) to develop, implement, and enforce action plans that establish programs that will reduce or eliminate pollutants from entering major bodies of water. The MS4 permit requires the development and implementation of action plans for impaired waters where a Total Maximum Daily Load (TMDL) assigns a waste load allocation to the GWMP. A TMDL establishes the maximum amount of a pollutant that can enter a water body without violating water quality standards.

You have the opportunity to to provide feedback online at (under documents) for these draft action plans, from September 16 until October 2, 2020.

The outcome of the effort will be a plan that contains a set of projects and actions to help clean up the water entering the Potomac River and Chesapeake Bay.

Contact Information

Robert Mocko
Environmental Protection Specialist
National Park Service
George Washington Memorial Parkway
700 George Washington Memorial Parkway
McLean, Virginia 22101