The Urban Forester is charged with enforcement of this chapter. The Urban Forester may enter upon private property after making a reasonable effort to locate the owner or other persons who have charge or control of the premises and during normal business hours or by prearranged appointment made with the specific landowner. Entry shall be for purposes of inspecting trees or plants and parts thereof, and the Urban Forester may remove such specimens as are required for the purposes of analysis to determine whether the same are infected. In the event entry is refused, the Urban Forester or any authorized representative shall have recourse to every remedy provided by law to secure entry.