Braewood Hills 3rd Addition PUD (PDT 24-1 and ST 24-3) Page 12 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 />(5) Filling, Grading and Excavating. Filling, grading and excavating within the /WR conservation area and within areas <br />removed from the /WR conservation area shall comply with the following standards: <br />(a) Filling, grading or excavating of more than 500 square feet must comply with Erosion Prevention regulations <br />for sensitive areas in EC 6.645. <br /> <br />There will be more than 500 square feet of filling, grading or excavating. An Erosion Control permit will be <br />submitted to the city for review and approval. <br /> <br />Erosion control measures will be installed prior to commencement of construction, maintained throughout <br />construction and until re-vegetation establishment has occurred. Upon conclusion of construction, finish <br />grades replicating the pre-existing condition, blending in with adjacent non-impacted conditions, will be <br />established. <br /> <br />(b) Grading and excavating conducted as part of restoration or enhancement projects, and bank and channel <br />reconfiguration shall result in topography that resembles landscapes shaped only by natural processes, for <br />example, incorporating the undulations, meanders and slopes found in such landscapes. For purposes of this <br />standard, straight lines and geometric or angular shapes are not acceptable. Channel and stream bank <br />slopes shall not exceed 25 percent at elevations of 500 feet or less. <br /> <br />Natural slopes, grades and contours will be established. Straight lines and geometric shapes will not be <br />permitted. Elevations in this area are above 800 feet. Minimal grading is done north of Randy Lane to re- <br />establish grades as the proposed road and related utilities are constructed. Except for the proposed road and <br />stormwater treatment facility, the existing stream and its banks will remain largely undisturbed. Although the <br />side slopes of the swale exceed 25%, they are oriented perpendicular to the stream’s flow direction. As runoff <br />from the conservation area enters the stormwater treatment facility, its velocity is naturally reduced due to the <br />change in flow direction. <br /> <br />From there the water turns and runs through the stormwater treatment facility which is fully vegetated and <br />designed to slow the run-off. See Site Plan and Planting Plan. <br /> <br />(6) Impervious Surfaces. Within the /WR conservation area, construction of new impervious surfaces shall comply <br />with the following standards: <br />(a) Impervious surfaces are prohibited within the /WR conservation area unless they are part of a use approved <br />in accordance with EC 9.4930(3). <br /> <br />(b) Impervious surfaces that are part of a use approved in accordance with EC 9.4930(3) shall be no larger than <br />the minimum necessary for the approved use. For sites with wetlands, impervious surfaces shall be located <br />as far from the boundaries of locally significant wetlands as practicable. For riparian and upland wildlife <br />habitat sites, impervious surfaces shall be located as far from the line of ordinary high water as practicable. <br /> <br />(c) Durable porous paving treatments or other infiltration devices approved by the planning director or decision- <br />maker shall be used in lieu of standard impervious paving surfaces to increase infiltration of stormwater where <br />practicable. This standard shall apply only to low volume parking areas, foot paths or lightly used access <br />roads, where porous soils and flat topography will facilitate infiltration of runoff. For the purposes of this <br />subsection, gravel surfaces are not acceptable as porous paving or as an infiltration device. <br /> <br />The construction of a public road is an approved use in accordance with EC 9.4930(3). Impervious surfaces <br />will be installed only where approved through the PEPI Permit (Permit No. 37011) and be of no greater extent <br />than the minimum necessary. <br />See Site Plan for extent of impact of impervious surfaces. <br /> <br />(7) Site Layout. On sites where the /WR conservation area is reduced, high intensity uses within the entire <br />development site, including high volume traffic lanes and truck loading docks, shall be designed and located so <br />that adverse impacts to wetland and riparian habitats within the /WR conservation area are minimized to the <br />greatest extent practicable.