There is hereby created a wellhead protection overlay district within Bonner County, the boundaries of which shall be established by the procedures and according to the criteria set forth in this subchapter. The provisions of this subchapter shall only be applicable within a properly established wellhead protection overlay district; provided, further, that no existing lawful use shall be affected by this title, but such uses will be governed by subchapter 3.4 of this title, nonconforming uses and structures, as amended. The requirements of this subchapter shall be deemed to be cumulative and supplementary to those of any underlying zone district. Whenever a conflict between the provisions of this subchapter and the underlying zone district exist, the more stringent requirements shall apply. (Ord. 501, 11-18-2008)