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The concrete used to line the channel will be visually inspected for cracks, breaks, and <br /> surface imperfections that could impact the performance of the conveyance. <br /> Specifications for the concrete-mix components will be made in consultation with the <br /> contractor before construction begins. The concrete admixture will be checked in the <br /> field to ensure that it is compatible with the slightly acidic, metal-bearing nature of the <br /> adit discharges. Discoloration of the concrete is expected after construction is complete <br /> due to precipitation of iron oxy-hydroxides as the adit discharges flow through the <br /> conveyance and mix with atmospheric oxygen. <br /> 9.6.2 Creation of Wetlands <br /> Placement of fill materials and topsoil will be documented in the field. Photographs of <br /> the areas before and after wetlands construction will be taken and used to further <br /> identify the extents of the areas covered. The final topography of the constructed <br /> wetlands will be surveyed immediately after construction. The numbers and species of <br /> vegetation plugs will be checked and recorded in field notes that will be summarized in <br /> the completion report. <br /> Long-term viability of the constructed wetlands will be verified through annual <br /> inspections for the first three years following the season of construction. Success of the <br /> project will be documented with sampling in 1-meter quadrates along a transect set up <br /> on the long axis of the site. Quadrates will be placed every 50 feet. Sampling will be <br /> performed in August of each year by Summit County staff or by an experienced <br /> contractor. Photographs from fixed reference points and vertical photos at each <br /> sampling point will be included in the monitoring program. Success will be considered to <br /> be achieved if 70%or more of areal coverage of the wetland vegetation can be <br /> documented in the third annual inspection following construction, and natural (non- <br /> irrigation)wetland hydrology is sustaining the plant communities. <br /> 9.6.3 Swan River Diversion <br /> An engineering analysis of the channel slope, shape, and width requirements will be <br /> performed prior to beginning work on the Swan River diversion upstream of the site. <br /> Design plans and specifications will be drafted for the check dam prior to its <br /> construction. <br /> Survey data will be collected during and after construction to verify that the channel <br /> parameters meet the specifications resulting from the engineering analysis. Survey data <br /> and field quality-assurance data such as fill specifications and compaction <br /> measurements will be collected during and after construction of the check dam to ensure <br /> that the engineering plans and specifications are met The plans and specifications for <br /> the channel and check dam,as well as the construction and post-construction <br /> measurements,will be included in the completion report to verify compliance with the <br /> work-plan requirements. <br /> 9.6.4 Fine-grained Tailings Cover Improvements <br /> Improvements to the existing cover over the fine-grained tailings below the former mill <br /> area include regrading, placement of additional topsoil, and revegetation with suitable <br /> native species. Survey measurements will be collected to ensure that the slope of the <br /> toe of the cover does not exceed 2:1. Documentation of the source of topsoil, either on- <br /> site or off-site,will be included in the completion report. Measurements of soil thickness <br /> on a 50-foot grid across the cover surface will be used to verify that at least 9 inches of <br /> iXURoyal Tiger VCUP Application Page 30 of 33 <br />