Item C: Stormwater Development Standards

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ATTACHMENT B SUMMARY OF DAC RECOMMENDATIONS June 2000 The Public Works Stormwater Department Advisory Committee Recommendations for Application and Implementation of New Development Water Quality Design Requirements and the Recommended Maintenance Strategy The Stormwater Department Advisory Committee met in 1999 and early 2000. Support for this committee was provided by the Stormwater Basin Planning Project Team, which consisted of City of Eugene staff members and persons representing URS Consultants and Lane Council of Governments. In June 2000, the 14-member DAC’s work was completed. Below is a summary of their recommendations. Basic Requirements 1.Require capture and treatment for 80% of the average annual runoff volume from new and significant re-development. 2.Require specific additional water quality best management practices for high pollutant source land uses. Application of the Water Quality Design Requirements Apply the proposed standards citywide to all new development and significant redevelopment within Eugene city limits, except for the following: 1.Single family and duplex dwellings being constructed on existing lots of record previously platted (as of the effective date of the ordinance adopting the standards), 2.Minor land divisions (less than four lots) for single family and duplex dwellings, 3.New and redeveloped multi-family, commercial, and industrial development with less than 3,000 square feet of total impervious area at build-out. Note: multi-family development is three or more dwellings on one lot. Implementation of the Water Quality Development Standard 1) Specify the Stormwater Design Process. The water quality design standard would be implemented through the evaluation and development of an overall site strategy based on a hierarchy of BMPs, with site planning controls as the highest priority and the higher-maintenance structural controls as the lowest priority. If all BMPs are infeasible or impractical, then an in-lieu-of fee may be allowed. 2) Require that site planning controls be evaluated fully before constructing other allowable approaches. At the same time, provide flexibility to developers for developing and selecting BMPs based on sound planning and engineering practices. A system of incentives could be developed that would encourage the use of certain site planning controls to provide additional water quality benefits, such as: 1.Eliminate the stormwater quality treatment requirement if the developer can use site planning controls to reduce the total site impervious area percentage to 15% or less. 2.Allow the integration of landscape requirements with stormwater quality treatment requirements. 3.Allow density transfers (due to the resources required, evaluating this incentive as a potential option is a longer term future work item for the City). August 2, 2005 1