An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.