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  2. Chesapeake Bay TMDL

EPA Evaluations of Trading and Offset Programs in the Chesapeake Bay Watershed

EPA conducts periodic reviews of Bay jurisdiction programs as part of its oversight responsibilities under the Clean Water Act. Bay jurisdictions include Delaware, Maryland, New York, Pennsylvania, Virginia, West Virginia and the District of Columbia. EPA completed its first review of the Bay jurisditions' offset and trading programs to meet target load reductions of nitrogen, phosphorus and sediment.  

EPA provided drafts of its reviews to the jurisdictions and interested stakeholders in December 2011 and finalized these reports in 2012.  Comments were received from interested stakeholders on the draft reports.


  • EPA Letter to Delaware (pdf) (787.43 KB)
  • EPA Evaluation of Delaware's Trading and Offset Program (pdf) (5.45 MB)
  • EPA Letter to District of Columbia (pdf) (819.1 KB)
  • EPA Evaluation of District of Columbia's Trading and Offset Program (pdf) (8.61 MB)
  • EPA Letter to Maryland (pdf) (789.48 KB)
  • EPA Evaluation of Maryland's Trading and Offset Program (pdf) (10.92 MB)
  • EPA Letter to New York (pdf) (784.45 KB)
  • EPA Evaluation of New York's Trading and Offset Program (pdf) (4.47 MB)
  • EPA Letter to Pennsylvania (pdf) (1.02 MB)
  • EPA Evaluation of Pennsylvania's Trading and Offset Program (pdf) (21.92 MB)
  • EPA Letter to Virginia (pdf) (888.56 KB)
  • EPA Evaluation of Virginia's Trading and Offset Program (pdf) (13.33 MB)
  • EPA Letter to West Virginia (pdf) (953.63 KB)
  • EPA Evaluation of West Virginia's Trading and Offset Program (pdf) (5.22 MB)

Chesapeake Bay TMDL

  • Bay TMDL Document
  • EPA Activities Pursuant to 2023 Settlement Agreement
  • Bay TMDL Fact Sheet
  • Bay TMDL Development
  • Frequently Asked Questions (FAQs)
  • Watershed Implementation Plans (WIPs)
  • Milestones
  • Air Pollution Reductions
  • Wastewater Pollution Reductions
  • Trading and Offsets
  • Midpoint Assessment
  • EPA Oversight of WIPs and Milestones
  • Sector-Specific EPA Oversight
  • Tracking Tools
Contact Us about the Chesapeake Bay TMDL
Contact Us about the Chesapeake Bay TMDL to ask a question, provide feedback, or report a problem.
Last updated on October 1, 2024
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