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Mitigation Toolbox

Mitigation Guidance, Templates and Links


 

Federal and State Guidance on Wetland Mitigation

2008 Federal Rule on Compensatory Mitigation for Losses of Aquatic Resources

Freshwater Wetlands in Washington State

  • Volume 1: A Synthesis of the Science (Ecology publication #05-06-006)
  • Volume 2: Guidance for Protecting and Managing Wetlands (Ecology Publication #05-06-008)

Wetland Mitigation in Washington State, Joint Guidance from Washington State Dept. of Ecology, Seattle District Corps of Engineers and Environmental Protection Agency Region 10

  • Part 1: Policies and Guidance (Ecology publication #06-0611a)
  • Part 2: Developing Mitigation Plans (Ecology publication #06-06-011b) 

Planning for Mitigation

  • Approximate Timeline for Wetland Mitigation (pdf 72 kb) This timeline is generic and may vary from region to region. Please verify with the regional biologist.
  • Generic Consultant Scope of Work for Wetland Mitigation (pdf 84 kb) This scope of work is generic and may vary from region to region. Please verify with the regional biologist.
  • Consider Local Critical Areas Ordinances from the relevant City or County early in planning to be sure mitigation developed meets local requirements, including the widths of buffers.
  • WSDOT designs mitigation site buffer widths to follow the Department of Ecology's guidance publication #05-06-006.
  • Ecology’s publication #05-06-008 also provides information on widths of buffers needed to protect wetlands.

Impact Assessment

Mitigation Plan Templates and Example Deliverables


WSDOT-Specific Mitigation Guidance


Performance Criteria