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(a) Filling, grading or excavating of more than 500 square feet must comply with Erosion Prevention regulations for sensitive areas in EC 6.645. As proposed, because more than 500 square feet of grading or excavating is required as part of this project, consistency with the applicable regulations of EC 6.645 are required. As discussed above at EC 9.4980(2)(b) and incorporated herein by reference, a condition of approval was required to ensure the applicant will obtain an Erosion Prevention permit, therefore this standard is met. (b) Grading and excavating conducted as part of restoration or enhancement projects, and bank and channel reconfiguration shall result in topography that resembles landscapes shaped only by natural processes, for example, incorporating the undulations, meanders and slopes found in such landscapes. For purposes of this standard, straight lines and geometric or angular shapes are not acceptable. Channel and stream bank slopes shall not exceed 25 percent at elevations of 500 feet or less. The applicant states that natural slopes, grades and contours will be established and straight lines and geometric shapes will not occur. A proposed swale runs parallel to the north side of the road extension that will exceed 25% slope due to the existing terrain. The side slopes of the swale that exceed 25% are oriented perpendicular to the stream's flow direction and located above the existing culvert where the stream flows in to. The swale will have no effect on the existing stream channel or its banks. Based on the applicant's statement and site plan that shows contouring lines, this standard is met. Based on the materials in the record and the above findings, the standards at EC 9.4980(5) are met. (6) Impervious Surfaces. Within the /WR conservation area, construction of new impervious surfaces shall comply with the following standards: (a) Impervious surfaces are prohibited within the /WR conservation area unless they are part of a use approved in accordance with EC 9.4930(3). (b) Impervious surfaces that are part of a use approved in accordance with EC 9.4930(3) shall be no larger than the minimum necessary for the approved use. For sites with wetlands, impervious surfaces shall be located as far from the boundaries of locally significant wetlands as practicable. For riparian and upland wildlife habitat sites, impervious surfaces shall be located as far from the line of ordinary high water as practicable. (c) Durable porous paving treatments or other infiltration devices approved by the planning director or decision -maker shall be used in lieu of standard impervious paving surfaces to increase infiltration of stormwater where practicable. This standard shall apply only to low volume parking areas, foot paths or lightly used access roads, where porous soils and flat topography will facilitate infiltration of March 2026 Findings & Decision of the Planning Director Page 16 of 28 Braewood Hills Third Addition (SDR 25-02 & PDF 25-01)