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Advance Mitigation that Works – Spring Valley Restoration Project, Federal Way, Washington

Advance Mitigation that Works – Spring Valley Restoration Project, Federal Way, Washington Presentation to: Alaska Department of Transportation Anchorage. Hans Ehlert, PWS. March 29, 2010. Presentation Outline. What is Advance Mitigation? Recent example to describe the process

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Advance Mitigation that Works – Spring Valley Restoration Project, Federal Way, Washington

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  1. Advance Mitigation that Works –Spring Valley Restoration Project, Federal Way, Washington Presentation to: Alaska Department of Transportation Anchorage Hans Ehlert, PWS March 29, 2010

  2. Presentation Outline • What is Advance Mitigation? • Recent example to describe the process • Benefits of Stakeholder Collaboration • Advantages of Advance Mitigation • Opportunities to apply Advance Mitigation in Anchorage

  3. What is Advance Mitigation? Advance Mitigation is… • Compensatory mitigation that is implemented beforefuture known impacts to wetlands. • Different from project-concurrent mitigation. • An approach that has rarely been used. • Watershed based – within same watershed as impacts.

  4. What is Advance Mitigation?…continued Advance Mitigation… • Is permittee-responsible mitigation. • Does not result in the selling of credits (like banking). • Is generally single-user defined (but could be multi-user). • Advance Mitigation can be a catalyst for developing restoration projects.

  5. How does Advance Mitigation Compare to Concurrent Mitigation?

  6. Example for Advance Mitigation—WSDOT Projects in Lower Puyallup River Basin Port of Tacoma SITE Hylebos Creek Puyallup River Fife

  7. WSDOT Acquired the Spring Valley Ranch in December 2004

  8. West Hylebos Creek was Channelized Onsite—Critical Salmon Habitat

  9. Undersized Bridge at S. 373rd Street Did not Adequately Convey Water or Sediment

  10. S. 373rd Street Regularly Flooded in Winter

  11. Hylebos Creek is Listed for Fecal Coliform

  12. WSDOT Developed a Mitigation Plan for the 25-acre Spring Valley Project

  13. WSDOT Collaborated on a Framework for Calculating Advance Mitigation

  14. The Value of Advance Mitigation can Increase Substantially over Time

  15. Stakeholder Collaboration was Key to Project Planning, Design, and Permitting WSDOT Formed a Technical Advisory Group (TAG) that consisted of: • Puyallup Tribe of Indians • Friends of the Hylebos • Washington Dept. of Fish & Wildlife • Washington Dept. of Ecology • U.S. Army Corps of Engineers • City of Federal Way • WSDOT

  16. TAG Process was Essential for Delivery • Critical design elements and stakeholder input were received early. • Regulatory staff became familiar with project details before permits were submitted. • Technical stakeholders participated and endorsed the project. • Members were focused on achieving a common restoration goal. • Regulatory staff issued permits quickly (in 2 months after submission!)

  17. Summer 2007—Channel Relocated and Earthwork Completed

  18. New Bridge Crossing at S. 373rd Street

  19. Riparian Vegetation – Planted Feb. 2008

  20. Second Growing Season – October 2009

  21. I-5 HOV Lane Construction (2009-2011)—Expects to Impact 2.9 acres of Wetland Bridge Widening for New HOV Lanes

  22. Impacts Subtracted from Mitigation Value

  23. Advance Mitigation can be Key to Developing Restoration Projects • Temporal Gain—increases mitigation value and reduces mitigation costs. • Saves money by paying for future mitigation in today’s dollars. • Simplifies permitting of future projects. • Economies of Scale—consolidates mitigation for multiple defined projects. • Why not construct tomorrow’s mitigation today?

  24. Opportunities to Apply Advance Mitigation in Anchorage

  25. Thank you….Any Questions? Contact Information: Colleen Soberay csoberay@ch2m.com 907.227.7362 (mobile) 907.646-0283 (office) Hans Ehlert hehlert@ch2m.com 425.922.8238 (mobile) 425.233.3167 (office)

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