North Carolina Water Quality Management Programs
Explore the initiatives by the NC Division of Water Quality to safeguard surface water and groundwater resources in North Carolina. Learn about TMDL, public meetings, source assessments, load allocations, and more. Get involved in protecting the environment for current and future generations.
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Presentation Transcript
April 27 Draft TMDL available Begin public comment period EMC Public meetings Comment period ends Revise TMDL EMC May June 11 July
Public Meetings May 14 Hickory, WPCOG May 23 New Bern, Craven Extension http://portal.ncdenr.org/web/wq/ps/mtu/tmdl/tmdls/mercury To protect and enhance North Carolina's surface water and groundwater resources for the citizens of North Carolina and future generations.
Source Assessment Current and Reduced Loads Wasteload Allocation (WLA) Load Allocation (LA) Margin of Safety (MOS) Reasonable Assurance Public Review and Comment
TMDL = WLA + LA + MOS WLA = wasteload allocation for point sources LA = load allocation for NPS
Existing LMB tissue concentration 0.9 mg/kg Target = 0.3 mg/kg Reduction needed = 67% Total baseline PS & NPS loads estimated
TMDL = WLA + LA + MOS NC Mercury TMDL = 81 lbs/yr + 3948 lbs/yr + implicit MOS
Wastewater contributions ~2% Statewide aggregate load in TMDL Reasonable potential Instream standard = 12 ng/l Level Currently Achieved = 47 ng/l
Atmospheric deposition ~98% NC deposition ~16% Options include CWA 319(g) petition Encourage national & international action Trading, mitigation, etc.
2002 lbs/year 2010 lbs/year 2016 lbs/year 2002-2016 Reduction Source Type Electric Generating 3,500 963 700 80% Other Point 1,800 881 800 56% 72% Total 5,300 1,844 1,500
Public Meetings May 14 Hickory, WPCOG May 23 New Bern, Craven Extension To protect and enhance North Carolina's surface water and groundwater resources for the citizens of North Carolina and future generations.
April 27 Draft TMDL available Begin public comment period EMC Public meetings Comment period ends Revise TMDL EMC May June 11 July
DWQ mercury TMDL approval DAQ per 15A NCAC 02D .2509 Mercury emissions control report Hg species Fate and transport Updated fish tissue data Recommendations concerning rules revisions
