Subject to the same conditions and limitations provided with respect to the creation of a unit, the following may occur:
(1) A unit area may be enlarged to include adjoining portions of the same geothermal resource area, including another unit area, and a new unit created for the unitized management, operation and development of the enlarged unit area; or
(2) The unitization plan may be otherwise amended, including, but not limited to, an amendment reducing unit area size.