Patuxent River Lower Watershed, Calvert and St. Mary's Counties, MD

Notice of Intent to Establish a TMDL for Bacteria

Section 303(d) of the federal Clean Water Act (CWA) directs States to identify and list waters, known as water quality limited segments (WQLSs), in which current required controls of a specified substance are inadequate to achieve water quality standards.  For each WQLS, the State is required to establish a Total Maximum Daily Load (TMDL) of the specified substance(s) that the waterbody can receive without violating water quality standards, demonstrate that another program or action will achieve water quality standards, or demonstrate via the development of a Water Quality Analysis (WQA) that water quality standards for the specified substance(s) are currently being achieved.  The Maryland Department of the Environment (MDE) hereby gives notice of the public availability of a draft TMDL document for Fecal Coliform for three restricted shellfish harvesting areas in the Patuxent River Lower Watershed (basin code 02131101 or Patuxent River Mesohaline: PATMH).

The Maryland Department of the Environment (MDE) has identified the waters of Patuxent River Mesohaline Chesapeake Bay Segment (Integrated Report Assessment Unit ID: MD-PAXMH) on the State's 2016 Integrated Report as impaired by polychlorinated biphenyls (PCBs) in fish tissue (2008) and fecal coliform in the restricted shellfish harvesting areas in Battle Creek (MD-PAXMH-Battle_Creek-2) in 2010 and MD-PAXMH-Battle_Creek-3 in 2014), Buzzard Island Creek (MD-PAXMH-Buzzard_Island_Creek in 2012)  and Hog Neck Creek (MD-PAXMH-Hog Neck_Creek in 2014).  The TMDLs available for public review will address the fecal coliform listings for the restricted shellfish harvesting areas in Battle Creek, Buzzard Island Creek and Hog Neck Creek, for which a data solicitation was conducted, and all readily available data have been considered.
The TMDL sets the maximum load limit for the impairing substance.  The TMDLs also reflect load allocations to point sources, nonpoint sources and a margin of safety that accounts for uncertainty in the procedures used to estimate the TMDLs.  Once established by the State, the TMDLs will be subject to approval by the U.S. EPA.  The approved TMDLs will support measures needed to attain water quality standards in the identified restricted shellfish harvesting areas in the Patuxent River Lower Watershed. 


A 30-day public comment period for the draft document will take place from January 16, 2019 to February 14, 2019. Copies of the draft document have been placed in the Calvert Library: Prince Frederick Branch, 850 Costley Way, Prince Frederick, MD 20678; Southern Branch, 13920 HG Trueman Road, Solomons, MD 20688 and Leonardtown Library, 23250 Hollywood Road, Leonardtown, MD 20650.  The draft document is also available on the Internet at web site or by contacting Ms. Melissa Chatham by mail at MDE/WSA, 1800 Washington Boulevard, Baltimore, MD 21230, or by telephone at 410-537-3937 (outside the Baltimore area, dial 1-800-633-6101 x3937).  Anyone wishing to review the draft documents and supporting information or needing technical information may contact Ms. Chatham during normal business hours. 

Written comments concerning the draft document may be submitted to the Department on or before February 14, 2019 and should be sent to Ms. Chatham at the above address or emailed to  All comments received during the comment period will be considered and the draft document may be revised accordingly prior to its submittal to EPA for approval.

Draft Total Maximum Daily Loads of Fecal Coliform in the Restricted Shellfish Harvesting Areas of Battle Creek, Buzzard Island Creek and Hog Neck Creek in the Lower Patuxent River in Calvert and St Mary's Counties, MD

Main Report Patuxent_River_Lower_Bacteria_TMDL_PN.pdf 
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