City of Tacoma Design Manual Update Meeting Overview
Updates to the City of Tacoma Design Manual were discussed in a public meeting in April 2014. The manual, last updated in 2004, needed revisions due to changes in surface water regulations. The focus was on making Low Impact Development (LID) the preferred approach for site development, aiming to minimize impervious surfaces, native vegetation loss, and stormwater runoff. The approach included conducting LID feasibility analyses, removing barriers, providing incentives, and enhancing the manual. The process involved reviewing development codes, collaborating with the planning department, and engaging in public outreach to ensure effective implementation.
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Presentation Transcript
City of Tacoma Design Manual Update Public Meeting April 10, 2014 Jim Parvey, P.E., LEED AP City of Tacoma Senior Principal Engineer
Need For Update Manual last updated in 2004. Changes in Surface Water Regulation require manual to be reviewed and updated as needed. Opportunity to update other sections of manual.
NPDES LID Code Revision Public Meeting April 10, 2014 Merita Trohimovich, P.E. City of Tacoma Surface Water Engineer
S5.C.5 b LID Code-related Requirements The intent of the code revisions shall be to make LID the preferred and commonly-used approach to site development. Revisions shall be designed to: minimize impervious surfaces, minimize native vegetation loss, and minimize stormwater runoff in all types of development situations.
LID Code Updates Approach Direct Approach: All projects shall complete LID feasibility analysis and implement to maximum extent feasible. Tacoma s Proposed Approach: Remove barriers; Make equivalent guidance; Add incentives; Provide equivalent manual; and Lead by example.
Tacomas Process Reviewing all development codes, regulatory and guidance documents Partnering with planning department using existing process for code adoption Using Standards Committee existing process to update Public Works Design Manual Creating internal work groups Public outreach
Work to Date Process and schedule developed Staff, manager, supervisor education Team on board Team educated Beginning public education Beginning actual work of code review and revision
LID Design Needs What is needed to implement LID? Additional training and technical support Additional details and pre-engineered sizing Site assessment and design guidance Guidance for minimizing impervious surfaces Tree retention and protection specifications Methods for retaining native vegetation Soil testing assistance Training workshops
Choosing LID What would help you choose LID over traditional stormwater options? Faster permit review Reduction of permit fees Allowance to modify design elements (additional height, ability to decrease setbacks, lower parking requirements, less landscaping) Reduction in surface water fees Training and Education Other?
Contact Information Merita Trohimovich City of Tacoma Surface Water Group 253-502-2103 mtrohimo@cityoftacoma.org Contact me for suggestions, questions and to get involved.
