Draft Total Maximum Daily Load (TMDL) Documents for Public Comment


Comment Submission Deadline

​Revised Final Point Source Technical Memorandum Total Maximum Daily Loads of Nitrogen and Phosphorus for the Upper and Middle Chester Rivers in Kent and Queen Anne's Counties, Maryland ​​​​Closed
October 1, 2018
Total Maximum Daily Load of Polychlorinated Biphenyls in the Piscataway Creek and Mattawoman Creek Tidal Fresh Chesapeake Bay Segments, Prince George's and Charles Counties, Maryland ​​​Closed
September 14, 2018
Revised Final Total Maximum Daily Loads of Fecal Bacteria for the Non-Tidal Piscataway Creek Basin in Prince George’s County, Maryland

June 11, 2018
(submitted 8/6/18)

​Total Maximum Daily Loads of Nitrogen and Phosphorus for the Baltimore Harbor in Anne Arundel, Baltimore, Carroll and Howard Counties and Baltimore City, Maryland Closed
June 6, 2018


EPA Seeks Available Trash Data in the Anacostia River Watershed

The U.S. Environmental Protection Agency (EPA) is seeking readily available data and information on debris/floatables/trash (hereafter referred to as “trash”) in the Anacostia River watershed for use in the development of a total maximum daily load (TMDL). On September 21, 2010, EPA approved a trash TMDL for the Anacostia River submitted jointly by the Maryland Department of the Environment (MDE) and the District of Columbia Department of Energy and the Environment (DOEE). On September 19, 2016, the Natural Resources Defense Council (NRDC) filed suit in the U.S. District Court for the District of Columbia seeking vacatur of EPA’s approval [Civil Action No. 16-1861 (JDB)].  The Court ruled in favor of NRDC on March 30, 2018 and directed EPA to develop or approve replacement TMDLs. EPA would appreciate your assistance in obtaining all readily available data and other information that would benefit the development of TMDLs for trash impairments in the Anacostia River watershed. Please refer to the data solicitation document for more information.


Contact Information

Please direct questions or comments concerning Maryland's TMDL Program to Melissa Chatham at (410) 537-3937.​​