extent National Forest practicable; land, local (E) A maximum of 10 governments may percent of each count the public jurisdiction's land acreage within portion of the the watershed watershed outside outside of the of the critical area critical area in as delineated on figuring the acreage July 1, 1993 may be allowed under this developed with new provision. For development local governments projects and that do not choose expansions of to use the high existing density option in development of up that WSIII to 70 percent watershed, each builtupon surface project shall, to the area (the "10/70 maximum extent option") in addition practicable, to the new minimize builtupon development surface area, direct approved in stormwater runoff compliance with away from surface the appropriate waters, and requirements of incorporate best SubItem management (3)(b)(i)(A) or practices, as SubItem defined in Rule (3)(b)(i)(B) of this .0202 of this Rule. For Section, to expansions to minimize water existing quality impacts. If development, the the local existing builtupon government selects surface area shall the high density not be counted development option toward the allowed within that WSIII 70 percent watershed, then builtupon surface engineered area. A local stormwater controls government having shall be employed jurisdiction within for the new the watershed may development; transfer, in whole (F) If local or in part, its right governments to the 10/70 option choose the high land area to another density local government development option within the that requires watershed upon engineered submittal of a joint stormwater resolution and controls, then they review by the shall assume Commission. ultimate When the water responsibility for supply watershed is operation and composed of public maintenance of the lands, such as required controls as
extent practicable; (E) A maximum of 10 percent of each jurisdiction's portion of the watershed outside of the critical area as delineated on July 1, 1993 may be developed with new development projects and expansions of 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 SubItem (3)(b)(i)(A) or SubItem (3)(b)(i)(B) of this Rule. For expansions to existing development, the existing builtupon surface area shall not be counted toward the allowed 70 percent builtupon 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 and review by the Commission. When the water supply watershed is composed of public lands, such as National Forest land, local governments may count the public land acreage within the watershed outside of the critical area in figuring the acreage allowed under this provision. For local governments that do not choose to use the high density option in that WSIII watershed, 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. If the local government selects the high density development option within that WSIII watershed, then engineered stormwater controls shall be employed for the new development; (F) If local governments choose the high density development option that requires engineered stormwater controls, then they shall assume ultimate responsibility for operation and maintenance of the required controls as
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