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Final Compensatory Mitigation and Monitoring Plan—Version 2.0 <br />Climax Mine Overburden Storage Facility Expansion (SPK-2013-00045) <br />March 2017 Bikis Water Consultants, a division of SGM Page 19 <br />the site. Wetland material will be salvaged as close to the anticipated planting time at the <br />mitigation site as possible. The material will be maintained by keeping it in a shady area in a <br />moist environment. <br />Preliminary work on the first phase of the OSF expansion is planned for the summer of 2017. <br />Accordingly, construction of the first phase of the Lake Irwin mitigation site will begin in summer <br />of 2017 and will be complete by the end of 2018. Phases 2 and 3 are anticipated to be <br />completed by 2020 and 2022, respectively. The goal will be to complete each additional phase <br />of the mitigation either before or contemporaneous with the subsequent phase of McNulty <br />disturbance to minimize temporal loss of wetland functions. <br />As noted previously, while Climax is prepared to provide all of the mitigation required by the <br />Section 404 permit as permittee-responsible mitigation at the Lake Irwin site, it is possible that <br />all or a portion of the mitigation could be provided by either the Western Slope ILF Program (at <br />Camp Hale), or by the CRCR mitigation bank in Kremmling if either are available and approved <br />at the time mitigation is needed. The Final Mitigation Rule favors the use of wetland mitigation <br />banks or ILF programs over permittee-responsible mitigation. <br />6.6 SITE PROTECTION <br />The disturbance area for each cell will be marked in the field prior to the start of construction. <br />Following construction the areas will be properly signed to prevent unintended damage from <br />future reclamation activities conducted adjacent to the areas. <br />6.7 EROSION AND SEDIMENT CONTROLS <br />Sediment and erosion controls will be used as needed for each phase of the mitigation to <br />minimize the discharge of sediment from the site due to construction activities. A conceptual <br />sediment and erosion control plan is shown on Figure 7. The controls shown on this figure will <br />be installed prior to construction, and maintained until the site is stabilized. The exact controls <br />used and their configuration could vary from what is shown on Figure 7 based on actual site <br />conditions. <br />All de-watering water will be conveyed away from the site and discharged to the Tenmile TSF <br />which is part of the existing Climax water management and treatment system.