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10 <br />commence in the Herbaceous Wetland on the right bank. The fill material will be removed and <br />transported to the disposal area. Next, riprap will be installed along the River edge at specified <br />locations. A new berm will be constructed in upland habitat west of the Herbaceous Wetland. In <br />addition, a barrier will be installed east of the berm to protect the restored Herbaceous Wetland <br />from migrating sand of the berm. <br /> <br />4.4 Restore Wetlands <br />Wetlands to restore include the High Flow Channel on the left bank and the Herbaceous and Low <br />Water Crossing Wetlands on the right bank. As previously noted, no work is proposed for the <br />portion of the sandbar on the left bank below the OHWL. <br /> <br />4.4.1 Left Bank <br />The undisturbed High Flow Channel has an unvegetated bottom with sandbar willows on the side <br />slopes. The disturbed portion of the Channel will be restored to a similar condition. Specifically, <br />the fill will be removed to the approximate grade of the original Channel. The bottom will remain <br />unvegetated and the banks of the Channel will be sprigged with sandbar willows on 12 inch <br />centers in the spring of 2010. There are no herbaceous plants in the Channel, however we will <br />attempt to establish common reed. First, the site will be tilled to create conditions appropriate for <br />seeding. Next, the sides of the channel will be seeded with common reed and the seed will be <br />raked into the soil and covered with a weed-free straw, applied at a rate of 2,000 pounds per acre. <br /> <br />4.4.2 Right Bank <br />After the fill material in the Herbaceous Wetland has been removed to create a grade <br />approximately six inches lower than the grade of the wetland, the site will be tilled to create <br />conditions appropriate for seeding. The site will be seeded with common reed and broadleaf <br />cattail, and the seed will be raked into the soil and covered with a weed-free straw applied at the <br />rate of 2,000 pounds per acre. Please note, there are no commercial sources of seed for common <br />reed and broadleaf cattail. Therefore, the seed will be hand collected from on-site populations <br />and applied to create an even distribution over the soil surface. Four peachleaf willows of a five <br />gallon container size will be planted on the edge of the wetland. Similarly, the Low Water <br />Crossing Site will be tilled and seeded with common reed, applied to create an even distribution <br />on the soil surface, and then sprigged with sandbar willow cuttings on a 12 inch spacing in the <br />spring of 2010. <br /> <br />4.5 Prepare & Submit As-Built Assessment <br />When the restorations are completed, an As-Built Assessment will be prepared to document the <br />topographies created in the High Flow Channel and Herbaceous Wetland restorations. See <br />Section 6.3. <br /> <br />4.6 Prepare & Submit Annual Monitoring Report <br />Prior to December 31 of each monitoring year, an Annual Monitoring Report will be prepared and <br />sent to the EPA. See Section 6.4. <br /> <br />4.7 Rationale for Expecting Success <br />4.7.1 Left Bank <br />The major function of the High Flow Channel is to convey water northward during flood events. <br />This Channel has no herbaceous wetland plants and a sparse cover of sandbar willows along the <br />edge. The proposed excavation will create the approximate original topography and restore the <br />water conveyance capacity of the Channel. The seasonally saturated soils along the Channel will <br />provide an appropriate habitat for the sandbar willow cuttings, which have a success rate greater <br />than 90% when planted in the appropriate habitat. <br />