Item 4: PH - Ordinance on Stormwater Development Standards

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methods including reducing or eliminating pathways that may introduce pollutants into stormwater, capturing acute releases, directing wastewater discharges and areas with the potential for relatively consistent wastewater discharges to the wastewater system, containing spills on site, and avoiding preventable discharges to wastewater facilities, surface waters or ground waters. 9.6791 Stormwater Destination. (1) Purpose. The purpose of EC 9.6791 is to protect life and property from flood and drainage hazards by maintaining the capacity of the city’s stormwater conveyance system through the establishment of destination regulations for stormwater runoff from development. (2) Applicability. Destination standards apply to all development. (3)Standards. Stormwater drainage facilities shall be designed and constructed according to adopted plans and policies, and in accordance with standards in EC Chapters 6 and 7, and the stormwater destination provisions and the facility design requirements set forth in the Stormwater Management Manual. An applicant proposing a new development must submit documentation to the city showing the stormwater destination into which the proposed development will be disposed. The documentation must establish that the new development will be disposed of into existing stormwater drainage facilities that, considering all developments that have received tentative or final plan approval as of the date the developer submits a complete application, have the capacity to handle the stormwater runoff that will be generated by the proposed new development for the flood control design storm, or, if the applicant cannot establish that existing stormwater drainage facilities have such capacity, the applicant must construct storm drainage facilities to accommodate the stormwater draining from the proposed development. (4)Underground Injecton Control Systems. iStormwater runoff disposed of in underground systems is also regulated through the federal Underground Injection Control (UIC) program under Part C of the Safe Drinking Water Act (42 U.S.C. § 300, Chapter 6A, Subchapter XII) and Oregon Administrative Rule Chapter 340, Section 044. 9.6792 Stormwater Pollution Reduction. (1)Purpose. The purpose of EC 9.6792 is to reduce the impacts that urbanization is having on the city’s water quality by providing standards for the capture and treatment of stormwater runoff from development. (2)Applicability and Exemptions. Ordinance - 5 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