This document, upon approval by the U.S. Environmental Protection Agency (EPA), establishes a Total Maximum Daily Load (TMDL) for sediment in the Jones Falls watershed (basin number 02130904) (2008 Integrated Report of Surface Water Quality in Maryland Assessment Unit ID: MD-02130904). Section 303(d) of the federal Clean Water Act (CWA) and the EPAs implementing regulations direct each state 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 either establish a TMDL of the specified substance that the waterbody can receive without violating water quality standards, or demonstrate that water quality standards are being met (CFR 2008b). The Maryland Department of the Environment (MDE) has identified the waters of the Jones Falls watershed on the 2008 Integrated Report as impaired by metals (copper, zinc, and lead) (1996), nutrients phosphorus (1996), sediments (1996), bacteria (2002), polychlorinated biphenyls (PCBs) - Lake Roland (2002), Chlordane Lake Roland (1996) and impacts to biological communities (2006) (MDE 2008a). The designated use of the Jones Falls mainstem and its tributaries above Lake Roland is Use III (Nontidal Cold Water). The designated use of the Jones Falls mainstem and its tributaries below Lake Roland is Use I (Water Contact Recreation and Protection of Warm Water Nontidal Aquatic Life), except for Stoney Run and its tributaries and the portion of the Jones Falls mainstem between North Avenue and Lake Roland, which are designated as Use IV (Recreational Trout Waters) (COMAR 2008a,b,c,d).