The purpose and effect of the proposed revision to Rule 40D-400.475, Florida Administrative Code (F.A.C.), is to delete the 4,000 and 9,000 square foot threshold requirements from the permit criteria of this Noticed General Permit. These threshold requirements are included in revisions the District is proposing to Rule 40D-4.051 F.A.C., to create a new environmental resource permitting (ERP), exemption for minor activities. The District is also proposing to amend Rule 40D-4.021 F.A.C., to add a definition of “semi-impervious” to clarify the types of surfaces that will contribute to the new exemption threshold area. The new exemption will include activities that involve less than 4,000 square feet of impervious or semi-impervious surface subject to vehicular traffic in uplands and activities that involve less than 9,000 square feet of total impervious or semi-impervious surface in uplands.