When a district board is authorized by the principal Act of a district to enact, amend or repeal regulations, it shall do so in accordance with ORS 198.510 to 198.600. In all counties which do not provide by ordinance or charter for the manner of enacting, amending or repealing ordinances and regulations, this section applies when a county board pursuant to statute is acting as the governing body of a district.
ORS 198.530