Sec. 12. 12 MRSA §685-A, sub-§9, as amended by PL 1973, c. 569, §10, is further amended to read:

9. Periodic review of district boundaries and land use standards. At the end of each 5 years following initial adoption of permanent land use standards and districts, the commission shall make a comprehensive review of the classification and delineation of districts of the land use standards. The assistance of appropriate state agencies shall must be secured in making this review and public hearings shall must be held in accordance with the requirements set forth in subsection 7 7-A.

Sec. 13. 12 MRSA §685-B, sub-§1, as amended by PL 1991, c. 46, §1, is repealed and the following enacted in its place:

1.__Review and approval required.__Except as provided in this section or by commission rule:

A.__A structure or part of a structure may not be erected, changed, converted or wholly or partly altered or enlarged in its use or structural form other than for normal maintenance or repair without a permit issued by the commission;

B.__A person may not commence development of or construction on any lot, parcel or dwelling unit within any subdivision or sell or offer for sale any interest in any lot, parcel or dwelling unit within any subdivision without a permit issued by the commission; or

C.__A person may not commence any construction or operation of any development without a permit issued by the commission.

Sec. 14. 12 MRSA §685-B, sub-§§1-A and 1-B are enacted to read:

1-A.__Exceptions.__Except as provided in this section or by commission rule:

A.__A permit is not required for the repair and maintenance of an existing road culvert or for the replacement of an existing road culvert, as long as the replacement culvert is: