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Mounds View Silver View Park Pond <br />4.1.1 TREE REMOVAL <br />Tree removal is recommended for invasive, nonnative trees throughout the project area and for select <br />native trees in the areas recommended for Bur Oak — Pin Oak Woodland restoration. The black locust <br />stands near Silver Lake Road will involve the bulk of the tree removal effort. Invasive trees are otherwise <br />scattered through the Lowland Hardwood areas. <br />Tree removals should be planned for dormant seasons with frozen ground conditions to minimize ground <br />disturbance and impacts to understory vegetation. Stumps should be treated with herbicide specifically <br />proven to kill the root systems and prevent re -sprouts of target trees. <br />Black locust and white poplar are prolific at root suckering, so any existing suckers should be cut and <br />treated as well. Seedlings and saplings of black locust, white poplar, white mulberry, Siberian elm, and <br />Amur maple will need to be spot treated by foliar applications during the growing season or cut/stump <br />treatments. Eliminating these tree species elsewhere in the park will help eliminate seed production and <br />potential re -colonization of the project area. <br />Tree removal bids can be solicited on a cost per acre or on a per -tree basis, depending upon the scale of <br />a restoration project. For the relatively small scale of work at Silver View Park, conducting an inventory of <br />trees slated for removal and field marking each tree will enable development of more detailed bid <br />specifications for more accurate contractor pricing. <br />4.1.2 INVASIVE SHRUB CONTROL <br />Invasive shrub control will primarily involve common buckthorn, but glossy buckthorn, Tartarian <br />honeysuckle and shrub/sapling-sized invasive trees should be included in this activity as well. Buckthorn <br />ranges in size from seedlings to trees that are over 3-4" in diameter. <br />As with the tree removal, invasive shrubs and saplings should be removed during dormant conditions. In <br />the wetlands, invasive shrub removal should take place when the ground is frozen as well. All invasive <br />shrubs and saplings should be cut as close to the ground as possible and cut stumps promptly treated <br />with herbicide. Cut material can be chipped and hauled off for composting. Forestry mowing to shred cut <br />material is an alternative to chipping and hauling for areas accessible by a skidsteer. <br />Follow-up foliar treatments should be anticipated for any stump re -sprouts and seedlings. If there is <br />desirable native broadleaf ground cover in areas with re -sprouts and seedlings, foliar treatment should <br />occur after the native broadleaf plants have senesced in the fall. Areas with sparse or no desirable <br />broadleaf plants can be foliar treated during the growing season. A minimum of three to five years of <br />follow-up foliar treatments should be anticipated to significantly reduce invasive shrub cover and control <br />recruitment from the soil seedbank. <br />Prior to invasive shrub control, a seeding/planting plan should be in place for revegetation. A seed mix of <br />native grasses and sedges is typically sown in areas where invasive shrubs will require follow-up foliar <br />treatments with a broadleaf -selective herbicide. After the invasive shrub cover has significantly <br />Project Number: 193806465 20 <br />