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From: Johnson, Patricia (ECY) <br />To: Broadhead. Craig; MoorC, [David J CIV USARMY CENWS (USA) <br />Ce: Nldlk Cook; Arden Thomas; Bier. Jennifer Kurt Addicott: Bryan Condon; Thomas. Jennifer, White, Lori (ECY) <br />Subject: RE: Bowers Field Airport (Ellensburg) Advance Mitigation Planning Memo <br />Date: Wednesday, December 16, 2020 11:19:11 AM <br />Attachments: imaae001 JPg <br />Craig, <br />Thank you for sending this information. have not had a chance to thoroughly review the <br />memo. However, Ecology is supportive of advance mitigation projects. Constructing a <br />compensatory wetland mitigation project in advance of impacts can reduce temporal loss and <br />risk of failure. <br />Please be aware that if the County wishes to use credits within the first two years (24 months), <br />the agencies will generally view it as concurrent mitigation and concurrent compensation <br />ratios will apply. After two years (24 months) the ratios required to offset impacts generally <br />will begin to be reduced. The longer the advance mitigation site is functioning, the more value <br />it may generate for use (i.e., credit use ratios applied to proposed impact projects will <br />continue to reduce) until the site reaches its maximum potential by meeting all of its required <br />performance standards. <br />More information/guidance is available on Ecology's Advance permittee -responsible <br />mitigation webpage: http5://ecology.wa.gov/Water-Shorelines/Wetlands/Mitieation <br />You can also review Chapter 4.2.2 Advance mitigation in the draft update to the interagency <br />wetland mitigation guidance. Though the public comment period has ended, the public review <br />version can be accessed on Ecology's Interagency wetland mitigation guidance webpage: <br />https: /eccQlopy.wa.goy/Water-Shorelines etlands/Mitigatio lnteragency-puidance <br />Make sure that future communications about this project include Lori White, Ecology's <br />Regional Wetland Specialist for Kittitas County. I have included her on this response. <br />Patricia Johnson <br />Shorelands and Environmental Assistance Program <br />Dept. of Ecology <br />360 /360-701-5558 cell <br />pioh461(@ecy.wa.gov <br />From: Broadhead, Craig[mailto:Craig.Broadhead@jacobs.com] <br />Sent: Thursday, December 10, 2020 2:56 PM <br />