Item 4: PH - Ordinance on Stormwater Development Standards

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(1) (a) Except for areas on the city’s acknowledged Goal 5 inventory, where the subject property in the proposed development is or will be periodically subject to accumulations of surface water or is traversed by any open drainage way, headwater, stream, creek, wetland, spring, or pond, including those not maintained by the city which drain onto or from city- owned property or into city maintained facilities. (b) For areas on the city’s acknowledged Goal 5 inventory, where the subject property in the proposed development is or will be periodically subject to accumulations of surface water or is traversed by any water course or channel. (2) Where necessary to extend public drainage facilities and services to adjoining undeveloped property. (3) To provide necessary drainage from the public right-of-way.] Section 4 . Sections 9.6790, 9.6791, 9.6792, 9.6793, 9.6794, 9.6795, 9.6796, and 9.6797 are added to the Eugene Code, 1971, to provide: 9.6790 Stormwater Management Manual. In order to implement Section 9.6791 through 9.6797 of this code, the City Manager shall adopt in accordance with EC 2.019, City Manager – Administrative and Rulemaking Authority and Procedures, a Stormwater Management Manual. The Stormwater Management Manual may contain forms, maps and facility agreements and shall include requirements that are consistent with the following goals: (1) Reduce runoff pollution from development by reducing impervious surfaces and capturing and treating approximately 80% of the average annual rainfall. (2) Control and minimize flows from development in the Headwater Areas using a variety of techniques to release water to downstream conveyance systems at a slower rate and lower volume, thereby reducing the potential for further aggravation of instream erosion problems. (3) Emphasize stormwater management facilities that incorporate vegetation as a key element, and include design and construction requirements that ensure landscape plant survival and overall stormwater facility functional success. (4) Operate and maintain stormwater management facilities in accordance with facility-specific O & M Plans. (5) Reduce pollutants of concern that are generated by identified site uses and site characteristics that are not addressed solely through the pollution reduction measures by implementing additional specific source control Ordinance - 4 4/3/06 - Ordinance includes changes made pursuant to the 1/9/06, 1/10/06 and 2/13/06 PC meetings and the 3/13/06 City Council Work Session. L:\CMO\2006 Council Agendas\M060410\S0604104-attA.doc