. OAKLEIGH <br />111. X11) O IV <br />-~A~ ue„ c G H a U S I N G <br />• Findings: The proposed development provides rain gardens, pervious <br />hardscapes, and vegetated bio-swales compliant with EC9.6790 through 9.6796 <br />Stormwater Management Standards and the 2008 Eugene Stormwater Manual <br />as evidenced by the following: <br />EC 9.6791 - Stormwater Destination. <br />- (1) Purpose. The purpose of EC 9.6791 is to protect life and property <br />from flood and drainage hazards by maintaining the capacity of <br />the city's stormwater conveyance system through the <br />establishment of destination regulations for storm water runoff <br />from the development. <br />(2) Applicability. Destination standards apply to all development. <br />(3) Standards.. Stormwater drainage facilities shall be designed and <br />constructed according to adopted plans and policies, and in <br />accordance with standards in EC Chapters 6 and 7, and the <br />storm water destination provisions and the facility design <br />requirements set forth in the.Stormwater Management Manual. <br />On-site infiltration is the preferred Stormwater destination for <br />development in the River Road - Santa Clara Basin. An application <br />proposing a new development must submit documentation to the <br />city showing the Stormwater destination into which the proposed <br />• development will be disposed. The documentation must establish <br />that the new development will be disposed of into existing <br />Stormwater drainage facilities that, considering all developments <br />that have received tentative or final plan approval as of the date <br />the developer submits a complete application, have the capacity <br />to handle the stormwater runoff that will be generated by the <br />proposed new development for the flood control design storm, or, <br />if the applicant cannot establish that existing stormwater <br />drainage facilities have such capacity, the, applicant must <br />construct storm drainage facilities to accommodate the <br />storm water draining from the proposed development. <br />Findings: The proposed stormwater management system has been designed <br />to protect life and property from potential flooding and will be constructed <br />according to all adopted plans and polices pursuant to EC Chapters 6 and 7 <br />and also City of Eugene's Stormwater Management Manual. Since there is <br />no existing stormwater system available and due to the existing conditions of <br />the development site, infiltration is unadvisable. Destination of the <br />stormwater from the development site, after treatment, will be along the <br />east side of the property and will slowly sheet drain on to the adjacent city <br />property. Flow from the site is reduced to pre-development flow and is <br />• dispersed using rip rap; no increase is proposed. This destination was agreed <br />PUD Tentative -June 14, 2013 . Page 34 of 46 Oakleigh Cohousing PDT 13-0001 1393 <br />