16.15.360 Channel migration zones – Development standards and alterations.
The following standards apply to development proposals and alterations on sites within CMZ that have been mapped and adopted by public rule:
(1) The following standards apply to development proposals and alterations within the regulated channel migration zone:
(a) Maintenance, repair or expansion of any use or structure is allowed if the existing structure’s footprint is not expanded towards any source of channel migration hazard, unless the applicant can demonstrate that the location is the least subject to risk;
(b) New primary dwelling units, accessory dwelling units or accessory living quarters, and required infrastructure, are allowed if:
(i) The structure is located on a separate lot in existence on or before February 16, 1995;
(ii) A feasible alternative location outside of the regulated CMZ is not available on site; and
(iii) To the maximum extent practical, the structure and supporting infrastructure is located the farthest distance from any source of channel migration hazard, unless the applicant can demonstrate that an alternative location is the least subject to risk;
(c) The subdivision of property is allowed within the portion of a regulated channel migration zone if:
(i) All lots contain 5,000 square feet or more of buildable land outside of the regulated CMZ;
(ii) Access to any lots does not cross the regulated CMZ; and
(iii) All infrastructure is located outside the regulated CMZ. (Ord. 12-20 § 2 (Exh. A); Ord. 06-17 § 3 (Exh. A))