TMDL Action Plans

clean-water

The Clean Water Act requires that States set appropriate uses for their waters and adopt water quality standards that protect those uses. When waters do not meet these standards, the Act requires that a Total Maximum Daily Load (TMDL) or "pollution diet" be established that sets the maximum amount of pollutants that a waterway can receive without violating water quality standards.

Chesapeake Bay

The Environmental Protection Agency, in conjunction with the Chesapeake Bay jurisdictions, established a TMDL for the Chesapeake Bay. This TMDL sets overall pollution limits for Nitrogen, Phosphorus and Total Suspended Solids and allocates required reductions in those pollutants of concern to the various states. The Commonwealth of Virginia has developed strategies to meet its required reductions in Nitrogen, Phosphorus and Total Suspended Solids. One of Virginia’s strategies is to require MS4 permittees (such as the City of Newport News) to achieve specific reductions in Nitrogen, Phosphorus and Total Suspended Solids that drain through stormwater runoff into the Chesapeake Bay and its tributaries.

The City of Newport News, in accordance with its Individual MS4 Permit (issued by the Department of Environmental Quality on July 1, 2016), must demonstrate its ability to meet the required reductions in pollutant discharges through the development of a Chesapeake Bay TMDL Action Plan. This plan was submitted to the Department of Environmental Quality before the deadline of June 30, 2018, and is still under review by the state.

» Draft Chesapeake Bay TMDL Action Plan

Major Pollutants

Local waterways

The Virginia Department of Environmental Quality establishes TMDLs for impaired waterways of the Commonwealth for various pollutants of concern. The Virginia Department of Environmental Quality has established two TMDLs for the City of Newport News: "Total Maximum Daily Loads of Bacteria for Back River in York County and Cities of Hampton, Poquoson, and Newport News, Virginia" and "Fecal Bacteria Total Maximum Daily Load Development for Warwick River: Primary Contact Recreational Use and Shellfish Harvesting Use". Both of these TMDL reports require reductions in bacterial discharges from various sources of pollution. As an MS4 permittee, the City of Newport News must achieve specified reductions in bacteria that drain through stormwater runoff into local impaired waterways.

The City of Newport News, in accordance with its Individual MS4 Permit (issued by the Department of Environmental Quality on July 1, 2016), must demonstrate its ability to meet the required reductions in bacterial discharges through the development of a Back River and Warwick River TMDL Action Plan. This plan was submitted to the Department of Environmental Quality before the deadline of June 30, 2018, and was approved.

» Back River & Warwick River TMDL Action Plan

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