Admin Order 58-12-14 - Laserfiche WebLink

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City -wide Stormwater Development Standards, enacted in 2006, include requirements for: destination, pollution reduction, oil controls, source controls, and flow controls for the headwaters area (for water quality). These requirements apply to properties inside city limits as well as any properties annexed to the city from the urban growth boundary. Stormwater destination requirements were already in place in 2006 and apply to all development, for the purposes of providing adequate stormwater conveyance and appropriate levels of flood control. The water quality requirements added in 2006 (pollution reduction, oil controls, source controls, and headwater flow controls) apply to new development and re- development that add or replace 1,000 square feet of impervious surface area or more. The City's code prescribes the basic design standards (flood control design storm and water quality design storm) that must be met and references the Stormwater Management Manual for acceptable facility options and detailed siting criteria and design requirements for each facility. The City does not dictate the type of facilities or stormwater management method that must be used to meet the flood control and water quality requirements, but rather provides the "tools" or best management practices to facilitate green infrastructure /low impact development (LID) practices. Facility options in the Stormwater Management Manual include those that allow onsite management of stormwater including ecoroofs and roof gardens, pervious pavement, stormwater planters, tree credits, swales, filter strips, soakage trenches, infiltration sumps, drywells and rain gardens. Financial incentives in the form of lower systems development charges and stormwater user fees are provided for certain techniques (pervious pavement, eco- roofs, contained planters, and tree credits) that reduce impervious surface areas. These techniques also results in smaller water quality facilities for treating runoff from the remaining impervious area. Beyond the stormwater development standards code and manual, the City has produced and distributed brochures (e.g. "Planters with a Purpose "), conducted outreach and trainings for the design community, and is setting an example for the community through its public capital improvement projects. In addition to supporting the Stormwater Development Standards, the RR -SC Plan supports following through on direction provided by the Eugene City Council related to LID. At a January 17, 2007 worksession ( "Green Infrastructure and Low Impact Development "), Council directed staff to conduct a review of the Eugene Code and administrative policies and procedures to identify barriers and regulatory or incentive -based approaches to increase the use of LID practices. At a follow -up September 17, 2008 worksession ( "Low Impact Development - Results of Review "), Council directed staff to further increase implementation of LID practices. This work is underway, beginning with identifying specific administrative adjustments, incentives, and other LID- related actions or implementation. 5 Eugene Code Section 9.6790- 9.6797 RR -SC Stormwater Basin Plan Comments Pg.7 of 17