Braewood Hills 3rd Addition PUD (PDT 24-1 and ST 24-3) Page 9 of 14 <br />Standards Review Application: Written Statement <br />September 5, 2025 <br /> <br /> <br /> Schirmer Consulting, LLC · PO Box 10424, Eugene, OR 97440 · (541) 234-5108 <br />Landscape Architecture + Land Use Planning <br />No known toxic materials are present on-site. Any refuse and toxic materials encountered will be removed. Fill <br />required to construct the road and the culvert will be kept to a minimum. Finished grades will replicate the pre- <br />existing conditions as is practical. The area of disturbance is shown on the Site Plan on Sheet ST3.0. The <br />area of disturbance is approximately 1,105 sf. <br /> <br />A stormwater treatment facility is planned on the north side of the proposed road. This can be considered the <br />area of fill. In this instance the fill is a stormwater treatment facility. It will serve to enhance the setback area, <br />treat stormwater run-off and filter pollutants from stormwater that flows across the conservation setback. <br />See Site Plan for limits of grading and limits of disturbance. <br /> <br />(b) Where practicable, finished grades shall encourage sheet flow of runoff across conservation setback areas to <br />maximize filtering and infiltration of precipitation and runoff within conservation setback areas (not including <br />stormwater collected and discharged from impervious surfaces). <br /> <br />The finished grades intentionally direct runoff from the conservation setback area as sheet flow into the <br />proposed planted swale located on the north side of Randy Lane (refer to Site Plan, Sheet ST3.0). Because <br />the conservation area sits at a higher elevation, runoff naturally flows downhill into the swale, which is <br />designed to enhance pollutant filtration and promote infiltration much more effectively than the current sheet <br />flow condition. <br /> <br />This swale is engineered to retain water for a longer duration than existing conditions, allowing vegetation and <br />soil media to filter sediments, pollutants, and nutrients before infiltration. It will be planted with native, dense- <br />rooted vegetation specifically designed for the local hydrologic conditions, further maximizing its treatment <br />performance and ecological benefit. <br /> <br />Brian Meiering, an Environmental Specialist from Wetlands and Wildlife, LLC. specified the proposed <br />appropriate native planting for the area that was disturbed beyond the boundaries of the proposed stormwater <br />treatment facility. <br /> <br />(c) On sites where the slope within the conservation setback area exceeds 15 percent, measures (e.g., planting <br />and contouring) shall be taken to slow the flow of runoff to the maximum extent practicable (not including <br />stormwater collected and discharged from impervious surfaces). <br /> <br />The proposed stormwater treatment facility is designed to naturally intercept existing runoff. Once the runoff is <br />in the stormwater treatment facility the more gradual slopes of the stormwater treatment facility and proposed <br />planting will naturally slow the flow of the runoff, enhancing opportunities for infiltration and pollutant removal. <br /> <br />The existing stream will remain unaffected by the construction of Randy Lane. The existing stream currently <br />enters an existing 12” storm pipe that conveys water directly to Videra Creek. As no culvert is proposed and <br />the pipe will remain undisturbed, stream flow direction and velocity will remain unchanged by the project <br />(d) Non-native plants shall be permanently removed to the maximum extent practicable and replaced with native <br />plant species in accordance with subsection (3) below. <br /> <br />All plants in that area will be removed to construct the road. The existing plants to be removed are listed on <br />the Site Plan as are the proposed replacement native plants. <br /> <br />(e) Except as required by EC 9.4980(2)(c), EC 9.4980(3)(d) and EC 9.4980(3)(e), site work to enhance the <br />conservation setback area shall be completed prior to or concurrent with other site development, unless <br />appropriate native plant species are not available within that time frame. <br /> <br />Site work to enhance the conservation setback area will commence following the completion of the road <br />construction and associated public utilities. See Site Plan and Planting Plan for finished product. Planting will <br />be done as native plants are made available. <br /> <br />(2) Vegetation Removal. Vegetation removal within the /WR conservation area and within areas removed from the <br />/WR conservation area shall comply with the following standards: