Wake Forest Unified Development Ordinance - July 2022

Erosion, Flood, Stormwater & Watershed Standards 12.6 Water Supply Watershed Protection Regulations

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15A NCAC 2B .0100, 15A NCAC 2B .0200, and in the Falls Lake Reservoir Water Supply Nutrient Strategy Rules 15A NCAC 2B .0276, .0277, .0281 and .0282 and Neuse River Basin-Nutrient Sensitive Waters Management Strategy Rules 15A NCAC 02B.0710. Additional authority is pursuant to the Federal Water Pollution Control Action of 1972 (Clean Water Act), federal Phase II Stormwater rules promulgated under it, and NCGS 143-215.1 and S.L.2006-246, the Town is required to obtain a Phase II National Pollutant Discharge Elimination System (NPDES) permit for stormwater management for its municipal separate storm sewer system and to adopt, among other things, requirements and procedures to control the adverse effects of increased post development stormwater runoff and nonpoint and point source pollution associated with new development and redevelopment. C. Surface Water Classification: The regulations of this section apply according to the Surface Fresh Water Classifications pursuant to 15A NCAC 02B.0101 of the water supply watershed established by NCDEQ. 1. Water Supply IV (WS-IV) Surface Waters: WS-IV waters located within the jurisdiction of the Town of Wake Forest and its ETJ include Horse Creek in the Falls Lake Watershed, the Neuse River and Richland Creek in the Upper Neuse River Basin. WS-IV waters are used as sources of water supply for drinking, culinary, or food processing purposes where a WS-I, II or III classification is not feasible.WS-IV waters are generally in moderately to highly developed watersheds or Protected Areas. 2. Water Supply II (WS-II) Surface Waters: WS-II waters located within the jurisdiction of the Town of Wake Forest and its ETJ include the Wake Forest Reservoir and Smith Creek Watershed from its source to the Wake Forest Reservoir dam. WS-II Waters are used as sources of water supply for drinking, culinary, or food processing purposes where a WS-I classification is not feasible. WS-II waters are generally in predominantly undeveloped watersheds. All WS-II waters are designated as High-Quality Waters (HQW) by supplemental classification. D. Specific Standards by Water Supply Watershed Area: The following standards shall apply to all mapped watershed areas and shall take precedence over the underlying zoning district standards. In each watershed area standards for Low Density Development Options and High Density Development Options pursuant to the March 1, 2019 revisions to the Water Supply Watershed Protection Rules 15A NCAC 02B.0624 as outlined in the tables below: Note: The term “impervious area” refers to mainly artificial surfaces which are covered by impenetrable materials like asphalt, brick, stone etc. for “built - upon are” means impervious surface and partially impervious surfaces to the extent that the partially impervious surfaces do not allow water to infiltrate into the subsoil. Built-upon area is referenced in Appendix A-4 of the NCDEQ Stormwater Manual.

Town of Wake Forest Unified Development Ordinance – July 19, 2022

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