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Introduction

King County’s In-Lieu Fee (ILF) Mitigation Program operates under the Mitigation Reserves Program and was the first IFL mitigation program in Washington state to be certified under 2008 federal rules. King County’s ILF Mitigation Program allows permittees with unavoidable wetland, river, stream, and buffer impacts to mitigate their impacts through the purchase of credits.

Unavoidable impacts can be offset by the purchase of credits for impacts occurring in five watersheds: Cedar River/Lake Washington, Central Puget Sound, Sammamish River, Skokomish, and Snohomish River.  King County’s In-Lieu Fee Mitigation Program further segments these five watersheds into seven service areas: Snoqualmie River, Skykomish River, Cedar River/Lake Washington, Sammamish River, Green River/Duwamish, Central Puget Sound, and White River/Puyallup. 

Applicants pay a fee to King County, which is in turn used to restore, establish, enhance, and/or preserve wetland, river, stream, and buffer within the same watershed as the impact. Once the purchase is completed, the permittee has no further obligation. King County is responsible for the success of the wetland mitigation.

If you are a developer / consultant interested in purchasing credits, please see our permittee information page and contact the Mitigation Reserves Program prior to beginning the application process.

 

On this Website

  • How In-Lieu Fee Mitigation Works
  • Service Areas
  • Debits and Credits
  • Information for Permittee/Consultants
  • Information for Regulators
  • Mitigation Sites
  • MRP Instrument
  • Templates
  • FAQs and Definitions
  • Contact Us
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    An established King County in-lieu fee mitigation site (Elliott Bridge Reach Off-Channel Wetland & Floodplain Reconnection, 2017)

    Photo: An established King County in-lieu fee mitigation site (Elliott Bridge Reach Off-Channel Wetland & Floodplain Reconnection, 2017)

    For questions about King County's Mitigation Reserves Program, please contact Megan Webb, Mitigation Reserves Program Manager, or Anne-Gigi Chan, Land Conservation Project Manager, King County WLRD Rural and Regional Services Section.