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<br />ORDINANCE NO. 20369 <br /> <br />AN ORDINANCE CONCERNING STORMWATER PROVISIONS; <br />AMENDING SECTIONS 9.0500, 9.6420, 9.8030, 9.8055, 9.8090, 9.8100, <br />9.8215, 9.8220, 9.8320, 9.8325, 9.8440, 9.8445, 9.8515, AND 9.8520 OF <br />THE EUGENE CODE, 1971; REPEALING SECTION 9.6510 OF THAT <br />CODE; AND ADDING SECTIONS 9.6790, 9.6791, 9.6792, 9.6793, <br />9.6794, 9.6795, 9.6796, AND 9.6797 TO THAT CODE. <br /> <br />THE CITY OF EUGENE DOES ORDAIN AS FOLLOWS: <br /> <br />Section 1. Section 9.0500 of the Eugene Code, 1971 is amended by adding the <br /> <br />following definitions in alphabetical order to the existing definitions, to provide: <br /> <br />9.0500 <br /> <br />Definitions. As used in this land use code, unless the context requires otherwise, <br />the following words and phrases mean: <br /> <br />Destination. The ultimate discharge point for the stormwater runoff from a <br />particular site. Destination can include on-site infiltration such as surface infiltration <br />facilities, drywells and sumps, and soakage trenches, and off-site flow to ditches, <br />drainage ways, rivers and streams, and off-site storm pipes. <br /> <br />Equivalent on-site area. An area of existing impervious surface that: (1) does not <br />have facilities or structures to treat stormwater runoff; (2) is of equal or greater <br />square footage to the area of proposed new impervious surface on the same site; <br />and, (3) is of equal use. <br /> <br />Flood control design storm. A theoretical storm for evaluating the capacity of the <br />storm drainage system and designing improvements for the required level of <br />protection, in accordance with the Stormwater Management Manual. <br /> <br />Flow control facility. Any structure or drainage device that is designed, <br />constructed, and maintained to collect, retain, infiltrate, or detain surface water <br />runoff during and after a storm event for the purpose of controlling post- <br />development water quantity leaving the development site. <br /> <br />Headwaters Area. The area within Eugene city limits that is above 500 feet. <br /> <br />Headwater streams. Streams that: (1) are identified on the Headwater Streams <br />Map (an Appendix to the Stormwater Management Manual) as having all or a <br />portion of their length located on slopes greater than 100/0; (2) are identified on the <br />Sensitive Areas Map as having all or a portion of their length located in areas with <br /> <br />Ordinance - 1 <br />