No local government shall exercise any of the powers conferred upon local governments by the Redevelopment Law [ 3-60A-5 to 3-60A-18 NMSA 1978] until the local government has adopted a resolution finding that:
A. one or more slum areas or blighted areas exist in the local government's jurisdiction; and
B. the rehabilitation, conservation, slum clearance, redevelopment or development, or a combination thereof, of and in such area is necessary in the interest of the public health, safety, morals or welfare of the residents of the local government's jurisdiction.