area and avoid designated water channelizing supply watershed stormwater; area is composed of (H) For local public land, such as governments that National Forest do not use the high land, local density option, a governments may maximum of 10 count the public percent of each land acreage within jurisdiction's the designated portion of the watershed area watershed outside outside of the of the critical area critical area in as delineated on figuring the acreage July 1, 1995 may be allowed under this developed with new provision. Each development project shall, to the projects and maximum extent expansions to practicable, existing minimize builtupon development of up surface area, direct to 70 percent stormwater runoff builtupon surface away from surface area (the "10/70 waters and option") in addition incorporate best to the new management development practices, as approved in defined in Rule compliance with .0202 of this the appropriate Section, to requirements of minimize water Sub-Item quality impacts; (3)(b)(i)(A) of this (ii) Critical Area Nonpoint Rule. For Source and Stormwater expansions to Pollution Control Criteria: existing (A) Low Density development, the Option: new existing built-upon development surface area shall activities that not be counted require a toward the allowed 70 percent Control Plan in surface area. accordance with A local government 15A NCAC 4 having jurisdiction established by the within the North Carolina watershed may Sedimentation transfer, in whole Control or in part, its right Commission or to the 10/70 option approved local land area to another government local government programs as within the delegated by the watershed upon Sedimentation submittal of a joint Control resolution for Commission shall review by the be limited to no Commission. more than two When the dwelling units of
area and avoid channelizing stormwater; (H) For local governments that do not use the high density option, a maximum of 10 percent of each jurisdiction's portion of the watershed outside of the critical area as delineated on July 1, 1995 may be developed with new development projects and expansions to existing development of up to 70 percent builtupon surface area (the "10/70 option") in addition to the new development approved in compliance with the appropriate requirements of Sub-Item (3)(b)(i)(A) of this Rule. For expansions to existing development, the existing built-upon surface area shall not be counted toward the allowed 70 percent surface area. A local government having jurisdiction within the watershed may transfer, in whole or in part, its right to the 10/70 option land area to another local government within the watershed upon submittal of a joint resolution for review by the Commission. When the designated water supply watershed area is composed of public land, such as National Forest land, local governments may count the public land acreage within the designated watershed area outside of the critical area in figuring the acreage allowed under this provision. Each project shall, to the maximum extent practicable, minimize builtupon surface area, direct stormwater runoff away from surface waters and incorporate best management practices, as defined in Rule .0202 of this Section, to minimize water quality impacts; (ii) Critical Area Nonpoint Source and Stormwater Pollution Control Criteria: (A) Low Density Option: new development activities that require a Control Plan in accordance with 15A NCAC 4 established by the North Carolina Sedimentation Control Commission or approved local government programs as delegated by the Sedimentation Control Commission shall be limited to no more than two dwelling units of
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