Chesapeake Bay TMDL Action Plan Information

In the Phase I and Phase II Chesapeake Bay TMDL Watershed Implementation Plan for the Chesapeake Bay Total Maximum Daily Load, the Commonwealth committed to a phased approach to reducing nutrients and suspended solids discharging from MS4s. The Special Condition for the Chesapeake Bay TMDL in the General VPDES Permit for Discharges of Stormwater from Small Municipal Separate Storm Sewer System (VAR04), effective July 1, 2013, and the eleven Phase I Individual MS4 permits, as they are reissued, requires MS4 operators to develop a Chesapeake Bay TMDL Action Plan that demonstrates future plans to meet the required reductions.

DEQ finalized revised guidance document GM15-2005 in May 2015 to provide staff and permittees with procedures for meeting the requirements of the Special Condition for the Chesapeake Bay TMDL with particular attention to the development of the Action Plan. It is intended to create consistency in reporting to the Department, as well as ensure that compliance and program evaluations are handled uniformly throughout the Commonwealth. This guidance is specific to the first reissuance of the Phase I MS4 permits since approval of the Chesapeake Bay TMDL and the 2013-2018 General Permit for Discharges of Stormwater from Small MS4s.

The plans have been submitted to DEQ for review and approval. As the action plans are approved they are incorporated as an enforceable component into the MS4 Program Plan for each permittee.

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Virginia Department of
Environmental Quality
P.O. Box 1105
Richmond, VA 23218
(804) 698-4000


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