TY - BOOK AU - Transportation Research Board AU - National Academies of Sciences, Engineering, and Medicine A2 - Anna Lantin A2 - Laura Larsen A2 - Ankita Vyas A2 - Michael Barrett A2 - Marc Leisenring A2 - Kevin Koryto A2 - Linda Pechacek TI - Approaches for Determining and Complying with TMDL Requirements Related to Roadway Stormwater Runoff DO - 10.17226/25473 PY - 2019 UR - https://nap.nationalacademies.org/catalog/25473/approaches-for-determining-and-complying-with-tmdl-requirements-related-to-roadway-stormwater-runoff PB - The National Academies Press CY - Washington, DC LA - English KW - Transportation and Infrastructure AB - State DOTs are increasingly subject to Total Maximum Daily Load (TMDL) requirements for water quality improvement that are implemented through National Pollutant Discharge Elimination System (NPDES) permits.As a result, state DOTs may incur significant costs to construct, operate, maintain, and monitor performance of best management practices and other stormwater treatment facilities that treat stormwater from sources outside the right-of-way, as well as stormwater from roadway sources.TRB’s National Cooperative Highway Research Program (NCHRP) Research Report 918: Approaches for Determining and Complying with TMDL Requirements Related to Roadway Stormwater Runoff describes how to evaluate TMDLs and develop a plan to comply with the requirements of a TMDL. The methods provide a robust approach to determining the pollutants of concern and how to assess the contribution of the roadway while understanding other important factors that affect overall pollutant loads, including adjacent land uses and watershed conditions and characteristics.A set of presentation slides summarizing the project that developed the report is available for download. ER -