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Water Resources Permit Guidance »
NPDES Permit Guidance »
NPDES Guidance

NPDES Guidance

Many of the Division's policies and guidance reference specific facilities or situations. Below are some permitting guidance documents to aid the NPDES permit writers in policy and guidance interpretation. These relate to NPDES permit parameters and permitting guidance for discharger groups.

GENERAL PERMITTING 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

Ammonia Nitrogen
Toxicity Testing
Copper & Zinc Action Levels Policy
Fecal Coliform
Total Residual Chlorine
Total Residual Chlorine Compliance Level
Total Metals

Mercury:
List of facilities required to perform EPA method 1631
EPA method 1631 notification letter

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
NPDES Standard Conditions

NPDES Permit Guidance

  • NPDES Guidance
  • Metals Calculators

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