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' IRIS MITIGATION AND DESIGN,INC. <br /> IRIS 2022 Arapahoe Street <br /> ' MITIGATION AND DESIGN,INC. Golden,Colorado 80401 <br /> Environmental Consulting Phone: 720-272-1985 <br /> bleisure@irismitigation.com <br /> SCHWARTZWALDER MINE 2013 PHASE 1 <br /> MITIGATION MONITORING REPORT <br /> ' This report details the 2013 Cotter Corporation (N.S.L) ("Cotter") Schwartzwalder Mine - Phase <br /> ' 1 Mitigation Monitoring of vegetation to establish the extent of success based on data collected <br /> in August and September of 2013. This report is part of the U.S. Army Corps of Engineers <br /> t ("USACE") 404 Permit (Permit# NOW-2011-1353-DEN dated November 25, 2011) Phase 1 <br /> ' mitigation requirements as prepared for the USACE and the U.S. Fish and Wildlife Service <br /> ("USFWS"). IRIS Mitigation and Design, Inc. ("IRIS") is assisting Cotter on this project work at <br /> tthe Schwartzwalder Mine located near Golden, Colorado. <br /> ' The September 2013 flood event had a significant impact on Ralston Creek (the "Creek") and <br /> adjacent riparian vegetation throughout the area. This flood event destroyed approximately 50 <br /> ' percent of existing riparian vegetation along the Creek and an estimated 47 percent of Phase 1 <br /> planted vegetation that was establishing in the Phase 1 mitigation areas. This greater than 500- <br /> year storm event and its heavy damage to Phase 1 mitigation areas is fully detailed in this <br /> ' report. <br /> ' Schwartmalder Mine Phase 1 -2013 Mitigation Monitoring Report Page 1 <br /> May 31, 2014 <br /> 1 <br />