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12/18/12 EPA approved the Shallotte River TMDL
10/15/12 EPA approved the NC Mercury TMDL
10/3/2012 Visit our new TMDL Alternative web page!
9/26/2012 EPA approved the addendum to the low pH TMDL for the Great Smoky Mountains National Park, TN
9/21/12 The NC water quality assessment methodology is available for public review
9/21/12 The EMC role in setting water quality assessment methodology is available for public comment
9/18/12 The Draft Shallotte River TMDL is available for public comment
9/4/12 EPA approved the Addendum to the White Oak River TMDL
8/24/12 EPA partially approved the 2012 303(d) list
8/2/12 The Draft Addendum to the Low pH TMDL for the Great Smoky Mountains National Park, TN is available for public comment
6/25/12 The Addendum to the White Oak River TMDL is available for public comment
6/11/12 The Draft Mercury TMDL public comment period has been extended to June 18th
4/27/12 The Draft Mercury TMDL is available for public comment
2/10/12 The Draft 2012 303(d) List is available for public comment
The Modeling and Assessment Branch (MAB) is responsible for fulfilling the requirements of Section 303(d) of the Clean Water Act, which requires states to develop a list of waters not meeting water quality standards. Listed waters must be prioritized, and a management strategy or total maximum daily load (TMDL) must subsequently be developed for listed waters. MAB is also involved in the development and review of water quality models for TMDLs, NPDES permitting, and special studies.