Permittees & Permit Requirements Permittees There are currently 122 permitted MS4 entities in North Carolina. Some MS4s elect to cooperatively implement their stormwater management programs and are issued a single permit naming them as co-permittees. There are currently 109 active NPDES MS4 permits: List of MS4 permittees PDF map of MS4 areas Interactive MS4 Map Viewer MS4 Tipped Areas Development activities within the unincorporated area of a county may be subject to the MS4 Post-Construction Site Runoff Control requirements [15A NCAC 02H .1017] if the development is within a U.S. Census designated Urbanized Area or the municipal sphere of influence around an MS4 [15A NCAC 02H .1016]. Counties with urbanizing areas are called “Tipped Counties” because they are subject (or tipped in) to just the post-construction portion of the MS4 requirements, but they do not receive MS4 permits. In the MS4 Tipped Area, the owner/operator of the development activity is required to obtain a stormwater post-construction permit if it meets the applicability criteria in 15A NCAC 02H .1001. Post-Construction stormwater permitting for development in these areas may be performed by either the county, local government or DEQ: List of Post-Construction Tipped Counties Post-Construction Permitting Interactive Map Permit Requirements DEQ issues individual NPDES MS4 Permits for a five-year permit term and does not currently offer a general permit option. DEMLR has developed a Baseline Phase II MS4 Permit Template which provides the starting point for developing each individual MS4 permit. Every permit includes a Stormwater Management Plan (SWMP) and requirements for annual reporting. The SWMP contains enforceable Best Management Practices (BMPs) and measurable goals for the implementation of a comprehensive stormwater management program that complies with the permit requirements. The primary components of a NPDES MS4 permit include program administration, any applicable Total Maximum Daily Load (TMDL) requirements, and programs to address each of the six required Minimum Control Measures (MCMs): Public Education & Outreach Public Involvement & Participation Illicit Discharge Detection & Elimination Construction Site Runoff Controls Post-Construction Site Runoff Controls Pollution Prevention & Good Housekeeping Municipal Facilities Operation and Maintenance Spill Response MS4 Operation and Maintenance Municipal SCM Operation and Maintenance Pesticide, Herbicide and Fertilizer Management Vehicle and Equipment Maintenance Pavement Management
Permittees & Permit Requirements Permittees There are currently 122 permitted MS4 entities in North Carolina. Some MS4s elect to cooperatively implement their stormwater management programs and are issued a single permit naming them as co-permittees. There are currently 109 active NPDES MS4 permits: List of MS4 permittees PDF map of MS4 areas Interactive MS4 Map Viewer MS4 Tipped Areas Development activities within the unincorporated area of a county may be subject to the MS4 Post-Construction Site Runoff Control requirements [15A NCAC 02H .1017] if the development is within a U.S. Census designated Urbanized Area or the municipal sphere of influence around an MS4 [15A NCAC 02H .1016]. Counties with urbanizing areas are called “Tipped Counties” because they are subject (or tipped in) to just the post-construction portion of the MS4 requirements, but they do not receive MS4 permits. In the MS4 Tipped Area, the owner/operator of the development activity is required to obtain a stormwater post-construction permit if it meets the applicability criteria in 15A NCAC 02H .1001. Post-Construction stormwater permitting for development in these areas may be performed by either the county, local government or DEQ: List of Post-Construction Tipped Counties Post-Construction Permitting Interactive Map Permit Requirements DEQ issues individual NPDES MS4 Permits for a five-year permit term and does not currently offer a general permit option. DEMLR has developed a Baseline Phase II MS4 Permit Template which provides the starting point for developing each individual MS4 permit. Every permit includes a Stormwater Management Plan (SWMP) and requirements for annual reporting. The SWMP contains enforceable Best Management Practices (BMPs) and measurable goals for the implementation of a comprehensive stormwater management program that complies with the permit requirements. The primary components of a NPDES MS4 permit include program administration, any applicable Total Maximum Daily Load (TMDL) requirements, and programs to address each of the six required Minimum Control Measures (MCMs): Public Education & Outreach Public Involvement & Participation Illicit Discharge Detection & Elimination Construction Site Runoff Controls Post-Construction Site Runoff Controls Pollution Prevention & Good Housekeeping Municipal Facilities Operation and Maintenance Spill Response MS4 Operation and Maintenance Municipal SCM Operation and Maintenance Pesticide, Herbicide and Fertilizer Management Vehicle and Equipment Maintenance Pavement Management
