The provisions of this chapter shall apply to all groundwater rights and groundwater users under state jurisdiction, except that WAC 173-150-080 shall apply only to permits issued or other groundwater rights established subsequent to the effective date of this chapter, or to withdrawal facilities which are the subject of an application for change of water right filed pursuant to RCW 90.44.100 subsequent to the effective date of this chapter. Cases of impairment caused by facilities or groundwater rights which are not subject to this chapter shall be subject to existing state laws and regulations.