Exhibit 6 <br />9.6791 Stormwater Flood Control. <br />(3) Standards. <br />(a) Stormwater flood control facilities shall be designed and constructed according to <br />adopted plans and policies, and in accordance with standards in EC Chapters 6 and 7, <br />and the stormwater flood control provisions and the facility design requirements set <br />forth in the Stormwater Management Manual. <br />(b) Based on the Rational Method flow calculation, stormwater runoff from the <br />development site for the flood control design storm shall be: <br />1. Discharged into existing stormwater flood control facilities that, considering all <br />developments that have received tentative or final plan approval as of the date the <br />applicant submits a complete application, have the capacity to handle the <br />stormwater runoff; or <br />2. Retained or detained onsite; or <br />3. Discharged into anew stormwater flood control facility constructed by the <br />applicant. <br />Natural resources such as waterways located within or adjacent to the city's storm water <br />system may provide stormwater functions including flood control. This project is served by <br />an existing 30-inch diameter storm line, which discharges directly to the Willamette River <br />and was not identified by the stormwater basin master plan (i.e. Willamette River Basin <br />Volume 6 of 7) as requiring additional capacity. As such, this project may utilize the city's <br />existing storm drainage system to provide all or a portion of the flood control facilities. <br />The proposed project will be sewed by filtration or infiltration planter boxes. The existing <br />soils are anticipated to provide good infiltration; however, infiltration testing has not yet <br />been completed. Based on the assumed infiltration rate allowed by the Stormwater <br />Management Manual, adequate room is not available on site to provide flood control <br />facilities because of the portion of the site that is restricted by the Water Resources Overlay. <br />As such, the city's off-site facilities will be utilized to provide flood control for the project. In <br />the event that infiltration testing indicates a higher rate of infiltration then expected, it may <br />be possible to provide flood control on site for a portion of the project in the infiltration <br />planters that will serve the parking and walkway areas. Please see the submitted stormwater <br />report for more information, (Attachment L). <br />9.6792 Stormwater Quality. <br />(3) Standards. <br />(a) For land use applications not proposing the construction of a public or private street <br />or shared driveway, the applicant shall submit a site development plan that delineates <br />the following conditions existing on the development site: <br />1. Infiltration rates less than 2 inches per hour; <br />2. Bedrock less than 5 feet below the ground surface; <br />Eugene Towneplace Suites Page 30 April 4, 2016 <br />