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Admin Order 58-12-14
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Admin Order 58-12-14
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Last modified
11/7/2012 2:23:00 PM
Creation date
11/7/2012 2:09:00 PM
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City Recorder
CMO_Document_Type
Admin Orders
Document_Date
11/2/2012
Document_Number
58-12-14
Author
CRO
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SECTION 1 Introduction <br />pollution from Eugene's municipal stormwater system and protect and improve the water quality <br />of our local waterways, including Amazon Creek and the Willamette River. Adaptive <br />management to continually improve the effectiveness of the City's stormwater program and <br />further reduce stormwater pollution is a regulatory expectation and is an on -going part of the <br />City's stormwater program. Adaptive management coupled with the Issuance of the 2010 MS4 <br />permit will result in additional refinements to the City's stormwater program, including in the <br />following areas: <br />• Stormwater Development Standards - As described in Action 4.3.2. of this plan, <br />development standards for water quality were adopted City -wide in June 2006. <br />Stormwater Development Standards apply to all new development and re- development <br />that adds or replaces 1,000 square feet or more of impervious surface area. Acceptable <br />stormwater management facility types along with siting and design criteria are included <br />in the City's Stormwater Management Manual (SWMM). The current SWMM leaves the <br />choice of facility type up to the applicant, as long as siting and design criteria are met. In <br />response to the 2010 MS4 permit, Eugene's Stormwater Development Standards will <br />need to be modified to prioritize low impact development techniques and green <br />infrastructure facilities (for example: vegetated stormwater planters, rain gardens and <br />swales) over mechanical treatment approaches (for example: prefabricated underground <br />water quality treatment manholes) for managing stormwater. Making these changes will <br />involve revising Eugene City Code and the SWMM. Draft revisions are under <br />development for public review beginning in fall 2012, and adoption by the City Council <br />in fall 2013. More information about the proposed Stormwater Development Standards <br />changes will be posted on the City's web page by fall 2012. <br />• Retrofit Strategy — Under the 2010 MS4 permit, the City is required to develop a strategy <br />to retrofit its municipal stormwater system to further reduce pollution in runoff from <br />existing developed areas. Over the past 20 years, Eugene has implemented many <br />environmental restoration and stormwater system retrofit projects, developed concepts for <br />additional retrofit projects (including via the Stormwater Basin Plans), and in a limited <br />capacity worked with property owners to encourage retrofitting stormwater systems on <br />private property. The City's retrofit strategy will be reviewed and refined as necessary to <br />meet the 2010 permit conditions. Public input will be solicited on the City's retrofit <br />strategy in approximately spring 2013. For more information and an up -to -date status on <br />development of the City's retrofit strategy, see City's web site: http://www.eugene- <br />or.gov. Go to Services > Stormwater > Stormwater Planning, Permits and Regulations > <br />NPDES. <br />Lane County's Municipal Stormwater Permit <br />Lane County received its first MS4 permit in 2007. Lane County's permit was issued under <br />Phase II of the program, and is therefore called a MS4 Phase II permit. The permit required <br />Lane County to establish a stormwater program for the regulated area corresponding to the area <br />between the city limits of Eugene and Springfield and the cities' Urban Growth Boundaries <br />(UGB). Lane County was required to establish a stormwater program for the regulated area to <br />address the following minimum control measures: <br />N:ASTORMWATER \City of EugencARR_SC Stormwater Basin Plan\2012 Document \Master_ Plan _9- 18- 12_DR-AFT Word Version.doc 1 -5 <br />
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