North Carolina Statewide Rule
State Stormwater Management Program in North Carolina
Key Facts
- Statute
- N.C.G.S. 143-214.7
- Disturbance threshold
- 1 acre or more
- Daily penalty cap
- $25,000
- Regulator
- NCDEQ
Summary
North Carolina General Statute 143-214.7 establishes the state stormwater program administered by the Department of Environmental Quality, setting minimum design and runoff standards that apply statewide and that local programs must meet or exceed.
(b2) For State stormwater programs and local stormwater programs approved pursuant to subsection (d) of this section, all of the following shall apply: (1) The volume, velocity, and discharge rates of water associated with the one-year, 24-hour storm and the difference in stormwater runoff from the predevelopment and postdevelopment conditions for the one-year, 24-hour storm shall be calculated using any acceptable engineering hydrologic and hydraulic methods.
Full Breakdown
The NC stormwater program targets new development that disturbs one acre or more, projects within 20 coastal counties, and projects draining to nutrient-sensitive or trout waters. Builders must use approved best management practices, control post-construction runoff, and obtain coverage under state permits. Local governments delegated to administer stormwater rules cannot adopt programs weaker than state standards. The Environmental Management Commission sets minimum design criteria through 15A NCAC 02H .1000 series, which apply universally across NC.
Violations & Penalties
Discharging without a permit, exceeding peak flow standards, failing to install approved BMPs, or not maintaining controls can trigger civil penalties up to $25,000 per day.
Frequently Asked Questions
Does North Carolina require stormwater permits for small home additions?
Can a NC city waive state stormwater requirements?
Sources
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