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October 28, 2011 to aesthetic and ecological value that the Ash trees provided for Lino Lakes. The City will remove all public Ash trees using City Crews 2. Remove /Replace all City Ash trees. This option removes and replaces every Ash tree with a new tree acceptable to the City Forester. This plan is the least costly way to manage the Lino Lakes Ash forest and allow the urban forest to regain its former size. The City will utilize City crews to remove and replace all City Ash Trees 3. Treat City Ash trees with insecticide. This plan has the lowest annual out of pocket costs, but it has the greatest cost over time. It also produces the largest remaining forest over time. Research demonstrates that insecticides can protect small trees < 12" in diameter until they reach a 15 inch diameter. Effective treatment of larger trees would require either a more frequent application, or a higher dose of insecticide. Research as of 3.8.2010 shows one application of insecticide will treat a tree possibly up to 3 years. The City will utilize City personnel who have been trained and licensed in treatment for EAB, to treat City trees chosen to be treated. Administration The City Forester shall coordinate efforts with the Public Works Department, the Minnesota Department of Agriculture and /or the Minnesota Department of Natural Resources, Anoka County, and St Paul District Energy to seek assistance for the removal, disposal, replacement, and treatment of City Ash trees. Furthermore the City Forester shall enforce the City Shade Tree Disease Control Ordinance and assist and educate the public in private Ash tree disposal. The disease control ordinance shall be an integral part of this plan. City Park and Boulevard Tree Management Protocol First remove all poorly formed and defective City owned Ash trees. Chemically treat all trees in the 6 to 12 inch classification. Remove and replace all Ash trees < 6 inches and trees > 12 inches. Should future chemical labels allow for higher chemical injection rates, then the City may choose to treat the larger trees. Peltier Island Nest Supported Trees The Ash trees supporting Heron nests on Peltier Island are on property of Anoka County. Therefore it is recommended to support the rookery concurrently in such a way as to support the present and future heron populations, and that a coordinated effort between Anoka County and the City of Lino Lakes be arranged to this end. Coordinated efforts may include chemical treatment of existing trees and /or