In the development of a greenspace program, the following criteria shall be met:

(1) The program shall promote the permanent protection of greenspace constituting a minimum of 20 percent of the geographic area of the county;

(2) The program shall: (A) identify legal and structural barriers to the achievement of a goal of preservation of a minimum of 20 percent of the geographic area of the county as permanently protected greenspace; (B) propose a ten-year strategy for the mitigation or elimination of such barriers by local action, including, but not limited to, zoning and land use ordinance changes, local legislation to be enacted by the General Assembly, and local conservation and preservation ordinances; and (C) identify, and commit to the employment of, existing local land use ordinances, policies, and regulations which will further the achievement of the preservation of permanently protected greenspace; and

(3) The program shall specify a program and method for allocation of greenspace funds by the county to municipalities electing to participate in a cooperative greenspace program with the county and located wholly or partly within the county which provide for population based proportional sharing of greenspace funds allocated under this chapter and cooperative expenditure of resources.