Approaches for Determining and Complying with TMDL Requirements Related to Roadway Stormwater Runoff

The objectives of the research are to provide state DOTs with guidance that includes the following: (1) an analysis of extant data, statistics, and information about stormwater runoff from roadways and other land uses, and other pollutant sources (e.g., atmospheric deposition), that can be used to establish appropriate waste load allocations in Total Maximum Daily Loads (TMDL) analyses; (2) approaches for determining the significance and the contribution of stormwater pollutants from roadways relative to other land uses within a given watershed that can be used to inform appropriate waste load allocations in TMDL analyses and compliance strategies; (3) approaches for determining the relationship between performance, cost effectiveness, and the practical feasibility of implementing traditional structural and nonstructural best management practices (BMPs) commonly used by state DOTs and the resultant benefit(s) to the watershed from BMP implementation; and (4) approaches for determining the overall efficiency and cost effectiveness of innovative solutions not commonly used by state DOTs, e.g., stormwater banking, pollutant-trading, off-site mitigation, off-site source control, and other holistic compliance strategies, that can be quantitatively demonstrated to provide an equal or greater benefit to the watershed and receiving water(s) than traditional structural and nonstructural BMPs. At a minimum, pollutants to be addressed by this research include bacteria, chlorides, metals, nitrogen, phosphorus, and sediment (no priority is implied by their order). This research should build on and not duplicate work conducted for NCHRP Synthesis Report 444: Pollutant Load Reductions for Total Maximum Daily Loads for Highways, NCHRP Report 792: Long-Term Performance and Life-Cycle Costs of Stormwater Best Management Practices, and active Federal Highway Administration (FHWA) project, “Feasibility Study for the Development of a Framework for an Effective Stormwater Quality Credit/Banking/Trading System.”


  • English


  • Status: Completed
  • Funding: $299912
  • Contract Numbers:

    Project 25-53

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Hartell, Ann

  • Performing Organizations:

    Michael Baker International

    310 New Pointe Drive
    Ridgeland, MS  United States  39157
  • Principal Investigators:

    Lantin, Anna

  • Start Date: 20150608
  • Expected Completion Date: 20181209
  • Actual Completion Date: 20181209
  • Source Data: RiP Project 40230

Subject/Index Terms

Filing Info

  • Accession Number: 01572339
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 25-53
  • Files: TRB, RiP
  • Created Date: Aug 6 2015 1:00AM