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NPDES Wastewater Permitting

Hot Topics

Duke Energy Draft Consent Orders
Signed Order of Consent Application
Delivery Receipt for Engineering Evaluations

H.F. Lee Plant

Asheville Steam Electric Plant
Public Notice
Draft SOC S17-010
SOC WQ S17-010 Upfront Penalty Calculation
Asheville Steam Electric Plant Engineering Evaluation

Belews Creek and Buck Steam Stations
Public Notice
Draft SOC S18-004
SOC WQ S18-004 Upfront Penalty Calculation
Belews Creek Steam Station Engineering Evaluation
Buck Steam Station Engineering Evaluation

Mayo and Roxboro Steam Stations
Public Notice
Draft SOC S18-005
SOC WQ S18-005 Upfront Penalty Calculation
Mayo Steam Station Engineering Evaluation
Roxboro Steam Station Engineering Evaluation

Current Duke Energy Wastewater Permit Renewals and Modifications

e-DMR: EPA’s Electronic Reporting Rule and how it may affect permit holders.

Precision in Discharge Monitoring Reports: Summarizes common conventions (and exceptions) for significant figures and rounding and describes their proper use in completing DMRs. Please direct questions to Mike Templeton at 919-807-6402 or

NPDES Permit Guidance

Engineering Alternatives Analysis
NC Model Mercury Minimization Plan
Reduction of Monitoring Frequencies for Exceptional Performance
Mixing Zones
Swamp Waters
Zero-Flow Streams
Trout Waters
Planning For An Expansion: A Guidance Document for Municipalities

Pollutant-Specific Permitting Guidance

Toxicity Testing
Fecal Coliform
Total Residual Chlorine
Total Residual Chlorine Compliance Level
Total Metals

NPDES Implementation of Instream Dissolved Metals Standards – Freshwater Standards

NPDES Implementation of Instream Dissolved Metals Standards – Saltwater Standards

Basin-Specific Permitting Guidance

Goose Creek
South Fork Catawba River Basin Color 

Facility Specific Permitting Guidance

Water Treatment Plant (WTP) Strategy
Assessment & Recommendations for WTP Permitting: Findings of the WTP Workgroup
Bulk Oil Terminals
Vehicle Pressure Washing  

NPDES Compliance Guidance

Significant Figures and Their Use on Discharge Monitoring Reports (DMRs)
DMR Calculations
NPDES Reporting Requirements
Wastewater Treatment Plant Annual Report Guidelines
Special Order by Consent (SOC) Guidance Document
Active Special Order by Consent (SOC) list
NPDES Standard Conditions 
Dissolved Metal to Total Metal Limit Calculators: Includes median HUC hardness values, user guide and calculators to assist permittees in understanding how the proposed Surface Water Standards (dissolved metals) impact permit limits.

Other Links

NPDES Compliance and Enforcement Information
Stormwater Permitting Program
DEQ Customer Service Center
PERCS Unit: Sewer collection system permits and pretreatment
Land Application Unit: Non-discharge permits such as wastewater disposal systems consisting of surface irrigation, high rate irrigation, recycle or reuse.