Two or more contiguous counties, having an aggregate population of 30,000 or more persons or comprising all the counties within a region designated pursuant to “An Act to provide for regional planning and for the creation, organization and powers of regional planning commissions”, approved June 25, 1929, as amended, situated within the same region designated pursuant to that Act, may qualify for a grant as provided in Section 3-3 by the enactment of appropriate resolutions creating and establishing a regional correctional facilities advisory board, designating the officer or agency to be responsible for administering grant funds, and providing a comprehensive plan for the construction and operation of a corrections facility described in Section 3-3, and providing for centralized administration and control of such correction facility described in Section 3-3.