(a) The planning and zoning provisions of this chapter are supplemental to and do not abrogate the powers and authority extended to agencies, bureaus, departments, commissions, divisions and officials of the state government by other state statute and those powers and authority shall remain in full force and effect.
(b) The powers of supervision and regulation by the divisions of the state government over municipal, county and other local governmental units and persons are also not abrogated and shall continue in full force and effect.