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