It is the responsibility of the Board to act as the City Tree Board and in that capacity to study, investigate, counsel and develop and/or update annually and administer a written plan for the care, preservation, pruning, planting, replanting, removal or disposition of trees and shrubs in parks, along streets and in other public areas. Such plan will be presented annually to the Council and upon acceptance and approval shall constitute the official comprehensive City Tree Plan for the City. The Board, when requested by the Council, shall consider, investigate, make findings, report and recommend upon any special matter or question coming within the scope of its work as City Tree Board.