Proposed Reclassification of a Section of the Cape Fear River
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Transcript of Proposed Reclassification of a Section of the Cape Fear River
Proposed Reclassification of a Section of the Cape Fear River
in New Hanover and Brunswick Counties (Cape Fear River Basin)
to Class SC Swamp (SW) with a Water Quality Management Plan
Elizabeth KountisDWR Classifications & Standards/Rules Review Branch
Existing and Proposed Water Quality Standards
SUMMARY AND COMPARISON OF
EXISTING AND PROPOSED
CLASSIFICATIONS’ STANDARDS
Class pHDissolved Oxygen
(DO)
Class SC (Existing)
6.8 – 8.5 5.0 mg/l
Class Sw(Proposed)
As low as 4.3 if result of natural
conditions
Lower than 5.0 mg/l if caused by natural
conditions
Proposed Water Quality Management Plan
Effluent Limitations for new and expanded NPDES wastewater facilities discharging oxygen consuming wastes:
• Domestic Facilities
• BOD of 5 mg/l, NH3-N (Ammonia) of 1 mg/l, and DO of 6 mg/l
• Industrial Facilities
• BOD, NH3-N (Ammonia), and DO limits based on site-specific best available technology and on a case by case basis
Proposed Water Quality Management Plan
Effluent Limitations for new and expanded NPDES wastewater facilities discharging oxygen consuming wastes:
• Seasonal limits (case by case determination, 15A NCAC 02B .0404)
• New or expanded pollutant discharge of oxygen consuming waste shall not cause the DO in the receiving water to drop more than 0.1 mg/l below the modeled in-stream DO at total permitted capacity