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Slocum Orthopedics Page 8 of 9 Standards Review – Written Statement July 2,2026 The Satre Group • 375 West 4th Avenue, Suite 201, Eugene, OR 97401 • (541) 686-4540 • www.satregroup.com The proposed work does not involve the use of heavy machinery within the channel. The applicant proposes to restore disturbed areas following construction. Areas subject to soil compaction from construction activities will be tilled or re-tilled to a depth of at least six inches prior to revegetation in order to restore soil function and support successful plant establishment. In addition, all construction activities shall comply with the erosion prevention and sediment control requirements of EC Chapter 6 and the approved erosion control plans, including applicable provisions governing clearing, grading, grubbing, excavation, and fill activities. Therefore, the proposal complies with the standards for the use of heavy machinery within the Water Quality Management Area. (7) Hydrology. Existing hydrology shall be maintained unless modification of hydrology is an element of an approved use and/or intended to improve water quality to minimize flow concentration, downcutting, and erosion. Finding: No hydrology modifications are proposed. (8) Stormwater Discharges. (a) Improvements shall not increase or decrease stormwater conveyance capacity either upstream or downstream of improvements except as necessary to address conveyance needs identified in the city’s adopted Stormwater Management Manual, or as otherwise allowed or required by this code; (b) Improvements shall meet the stormwater development standards of EC 9.6790 through EC 9.6797; and (c) Flow spreaders and energy dissipaters shall be utilized to prevent erosive impacts to protected areas from stormwater discharges where practicable to avoid concentrating stormwater discharges. Finding: The applicant has submitted a Stormwater Drainage Plan demonstrating that the proposed stormwater management and conveyance improvements have been designed in accordance with applicable City standards. The proposed system collects, conveys, and controls runoff from the development without creating adverse impacts to conveyance capacity. No evidence has been provided indicating that the improvements will increase or decrease stormwater conveyance capacity beyond that necessary to meet the City's stormwater management requirements. The Stormwater Drainage Plan demonstrates compliance with the stormwater development standards of EC 9.6790 through EC 9.6797. Stormwater from the proposed conveyance system will be discharged through two outfall locations. Both outfalls are designed with riprap energy dissipation facilities sized and constructed in accordance with the design criteria contained in the City of Eugene's 2014 Stormwater Management Manual, Appendix F. These energy dissipaters are intended to reduce discharge velocities and prevent erosion at the points of discharge into the receiving channel. The submitted plans include construction details and design information demonstrating that stormwater discharges will be conveyed and released in a manner that minimizes erosive impacts to the Water Quality Management Area. The use of riprap energy dissipation at each outfall constitutes a practicable measure to prevent concentrated flows from causing erosion within protected areas. Therefore, the proposal complies with EC 9.4785(4)(a) through (c). (9) Repair and Reconstruction of Stream Banks and Channels. Bio-engineering methods are to be used to repair stream bank failures and channel erosion problems and to reconstruct stream banks and channels except where those methods by themselves would be ineffective. Where bioengineering alone is inadequate, stones and boulders may be used to augment bank repair efforts, dissipate energy or control flows.