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leffens <br /> and Assoclofes, Inc. <br /> Water Resource, Environmental,and Mining Engineering <br /> October 5, 2017 <br /> Matt Montgomery <br /> US Army Corps of Engineers <br /> Senior Project Manager, CO West Branch <br /> Sacramento District <br /> 400 Rood Avenue, Room 224 <br /> Grand Junction, Colorado 81501 <br /> Re: Continued Impacts to Love Pit Mitigation Wetlands, LISACE <br /> Permit No. 19910078, Summit County,Section 22, T4S, R78W. <br /> Dear Matt: <br /> Last January 11�' I sent you an email that described my concern that the constructed <br /> wetland associated with the Love (gravel) Pit (Permit No. 19910078)was being impacted by <br /> current gravel mining on the west side of Highway 9, north of Silverthorne. I was <br /> subsequently retained by the current owner of the land on which the wetlands were <br /> constructed, Eagle's Nest Mountain Ranch, LLC (Owner) to provide professional technical <br /> engineering and wetland consultation services. I am writing in that capacity as an agent for <br /> the Owners. <br /> I and the Owner's property managers met with John O'Hara, the Manager for Peak <br /> Materials, and current operator of the Everist gravel mining facility last May to discuss the <br /> impact that occurred in 2016 and their plan to correct the problem. Peak Materials has <br /> implemented positive actions this summer to reestablish the water supply to the wetland by <br /> pumping into a groundwater recharge ditch on the west side of Highway 9. The plan has <br /> worked this year, to a degree, but is not a final solution. Accordingly, I have been asked to <br /> contact you and request the Corp's assistance in ensuring a perpetual water supply to the <br /> Love Pit wetland during mining and after post-mining reclamation. There are two specific <br /> concerns about the effects on the Love Pit wetland caused by mining and the eventual <br /> reclamation of the gravel pit on the west side of Highway 9. Those are shown highlighted in <br /> yellow on Figure 1 (at the end of this letter) along with key factors that are annotated on the <br /> Steffens and Associates, Inc. <br /> 13918 East Mississippi Ave., PMB#60119,Aurora CO 80012 <br /> Cell: 303.378.8181 steffensinc@msn.com <br />