Article 4.02 of the Code of Virginia established the Chesapeake Bay Watershed Nutrient Credit Exchange Program. The final regulation was approved by the State Water Control Board at its September 6, 2006 meeting.
Virginia Nutrient Credit Exchange Association - Exchange Compliance Plan, 2014 Update
Nonpoint Source Nutrient Credit Registry
Nutrient Credit Trading Ratio Study Report - Final Report to the State Water Control Board
Chesapeake Bay Watershed General Permit Trading Ratio Study web page.
Report of the Secretary of Natural Resources to the Governor and the General Assembly - Proposed Expansion of the Use of Nutrient Credits in Virginia pursuant to Senate Joint Resolution 334 (2011)
Study of the Expansion of the Nutrient Credit Exchange (SJR 334)