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Home My WebLink AboutWQC N-T-P Local Programs Set 1 PPTRequest Approval of Neuse & Tar-Pamlico New Development Stormwater Local Programs –First Twelve of Thirty-Eight May 2022 Water Quality Committee Trish D’Arconte Division of Water Resources, Nonpoint Source Planning Branch Neuse & Tar-Pamlico Stormwater Rules (.0711 & .0731) •Original nutrient stormwater rules ~20 yrs ago •15 local programs in Neuse, 11 in Tar-Pamlico •Recent revision/readoption –effective April 2020 •Now 30 programs in Neuse, 12 in Tar-Pamlico (4 in both basins) •New Model Program approved by EMC March 2021 •Local Governments required to submit draft Local Programs in two cohorts: •26 original rule communities -Sept 2021 •16 newly-added communities –Mar 2022 •Programs require EMC approval prior to local adoption, implementation •Request to WQC/EMC planned as 3 sets -10-15 programs/set 2 Rule History and Implementation Neuse & Tar-Pamlico Stormwater Rules (.0711 & .0731) •Same Rule structure & coverage between basins •Codified, clarified requirements from earlier Model Programs •Similar to Stormwater Rules (low/high density requirements, onsite stormwater treatment & design criteria, runoff volume match) •Can use nutrient offsets to meet thresholds not otherwise met by onsite stormwater treatment •Revised phosphorus target, Tar-Pamlico •Address incremental BUA additions •New nutrient calculation tool; same as Falls, Jordan •Dropped peak flow regulation, stormwater retrofit ID 3 Improvements in 2020 Revision Model Program Development Development of Model Program –variations in guidance needs and preferred approaches: •Original Rule communities -starting with something, less time needed •New Rule communities –some starting from scratch, more time needed •1, 2 or 3 watersheds per jurisdiction, overlaps, esp. Falls •Counties and Cities –differing processes and issues •NPDES Stormwater Phase 1s and Phase 2s •Large range of experience and readiness 4 Local Government Characteristics Approved Model Program Guidance products developed: •Local Program Development Guide •Model Stormwater Ordinance for New Development •Model Stormwater Management Template Guidance provided through process: •MS Teams meetings / calls •Additional guidance emails •Individual Local Program reviews 5 Guidance Developed for or Provided to Local Governments Local Programs •Details how post-construction stormwater control, illicit discharge, public education are to be carried out •Describes expected metrics and information for annual report •Provides local details that help DWR understand context •New or revised stormwater ordinance 6 Purposes and General Contents •Adequate description of local government characteristics, stormwater regulation context •List of actions local government intends to take to implement Rule •Specification of what/how local government intends to report progress •Documentation of community-specific situations, compliance approach •Draft Stormwater Ordinance •Supporting materials 7 What DWR Looked For In Submitted Materials Local Programs Draft programs presented in this set: •Cary, Durham County, Edgecombe County, Garner, Goldsboro, Orange County, Oxford, Raleigh, Smithfield, Wake County, Washington, Wayne County •9 are Neuse (4 of those are Falls Lake), 3 are Tar -Pamlico •10 used the MS4-style Local Program template •2 used the Model Ordinance completely, others some borrowing •2 have merged NMS with MS4 (Program & Reporting) •None are CAMA •All have previous stormwater programs 8 How Draft Programs Look Local Programs Next Steps •WQC approval of Local Programs –3 sets •May 2022 (12 Local Programs) •July 2022 (11 Local Programs) •September 2022 (15 Local Programs) •EMC approval of Local Programs –3 sets •July 2022, September 2022, November 2022 •Up to 6 months for Local Program & stormwater ordinance adoption & implementation 9 10 DWR’s Requested Action The Division requests approval to proceed to the Environmental Management Commission with the first twelve Neuse & Tar-Pamlico Local Programs for Implementation of New Development Stormwater QUESTIONS / COMMENTS Trish D’Arconte Environmental Program Consultant N.C. Dept. Of Environmental Quality Division of Water Resources trish.darconte@ncdenr.gov 11