Item 4: PH - Ordinance on Stormwater Development Standards

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Headwaters Area. The area within Eugene city limits that is above 500 feet. Headwater streams. Streams that: (1) are identified on the Headwater Streams Map (an Appendix to the Stormwater Management Manual) as having all or a portion of their length located on slopes greater than 10%; (2) are identified on the Sensitive Areas Map as having all or a portion of their length located in areas with highly erodible soils; (3) are at least 500 feet or longer; and, (4) drain at least 10 acres. Impervious surface/area. Any surface area that causes water to run off the surface in greater quantities or at an increased rate of flow from conditions pre-existing to development. Types of impervious surface include, but are not limited to, rooftops, asphalt and concrete parking lots, driveways, roads, sidewalks, and pedestrian plazas. Note: Slatted decks are considered pervious. Gravel surfaces are considered pervious unless they cover impervious surfaces or are compacted to a degree that causes their runoff coefficient to exceed 0.8. Oil control facility. Any structure or drainage device that is designed, constructed, and maintained to remove oil and grease from storm runoff. Pollution reduction facility. Any structure or drainage device that is designed, constructed, and maintained to collect and filter, retain, or detain surface water runoff during and after a storm event for the purpose of maintaining or improving surface and/or groundwater quality. Property suspected or known to contain contaminants in the soil or groundwater. Any real property where the presence of any hazardous substance or petroleum product indicates an existing release, past release, or threatened release of a hazardous substance or petroleum product into the ground, ground water, or surface water of the property. Source control . Any structure, device, or design that is used to eliminate or reduce pollution from a source. Stormwater Management Manual. The City of Eugene Stormwater Management Manual adopted by the city in the manner set forth in EC 2.019, City Manager – Administrative and Rulemaking Authority and Procedures. . Stormwater Management Facility. Any structure or configuration of the ground that is used or, by its location, becomes a place where stormwater flows or is accumulated, including but not limited to, pipes, sewers, curbs, Ordinance - 2 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