Final TMDLs Approved by EPA: Bush River

The Bush River is a tidal estuary in Harford County, Maryland, located about 24 km (15 miles) northeast of Baltimore. The watershed area of the tidal Bush River has two significant stream systems: Bynum Run and Winters Run and includes Aberdeen Proving Ground, a military facility. 

Maryland water quality standards specify that all surface waters of the State shall be protected for water contact recreation, fishing, and protection of aquatic life and wildlife. The designated use of the waters of the Bush River (8-digit Basin Code: 02130701) is Use II – Support of Estuarine and Marine Aquatic Life and Shellfish Harvesting. The Maryland Department of the Environment (MDE) has identified the waters of the Bush River (Integrated Report Assessment Unit ID: MD-BSHOH) on the State's 2014 Integrated Report as impaired by nutrients (nitrogen & phosphorus) (1996) and PCBs in fish tissue (2002). The Bynum Run watershed (An 8-Digit watershed that drains to the Bush River) was listed as impaired for sediment (2012). The Chesapeake Bay nutrient and sediment TMDLs, which were approved by the EPA in December 2010, has addressed the nutrient impairment listings for the Bush River. EPA approved a TMDL for sediment in the Bynum Run watershed on September 30, 2011.

The document, available below, establishes a total PCB (tPCB) TMDL for the tidal waters of the Bush River, for which a data solicitation was conducted and all readily available data have been considered.

Total Maximum Daily Loads of Polychlorinated Biphenyls in in the Bush River Oligohaline Chesapeake Bay Tidal Segment in Harford County, Maryland

(Approved on August 2, 2016)

EPA's Decision Letter

EPA's Decision Letter (1,500KB)

Main Report

Bush_River_PCB_TMDL_fa.pdf (3,370KB)

Comment Response Document

Bush_River_PCB_TMDL_CRD_fa.pdf (33KB)


Contact Information

Please direct questions or comments concerning this project to Maryland's TMDL Program at (410) 537-3818.