For the purpose of providing the public health, safety and general welfare, the board may, from time to time, amend the provisions imposed by these subdivision regulations. Public hearings on all proposed amendments shall be held by the board in the manner prescribed by law. All proposals not originating with the commission shall be referred to it for a recommendation before any action is taken on the proposal by the board. (Ord. 77-6, 3-28-1977, eff. 4-14-1977)