Sec. 1. 30-A MRSA §3002, sub-§§5 and 6 are enacted to read:

5.__Procedures for ordinances or bylaws enacted or amended by citizen initiative.__Municipal ordinances or bylaws may be enacted or amended as provided in this subsection.

A.__The electors of the municipality may propose any new ordinance or bylaw or amendment to an existing ordinance or bylaw by written petition addressed to the city council or board of selectmen.__The petition must be signed by a number of electors of the municipality equal to at least 10% of the total votes cast for Governor in the municipality in the last gubernatorial election preceding the filing of the petition.__Signatures may be collected only from registered voters in the municipality.__All signatures must be certified as those of registered voters by the municipal clerk.__The measure thus proposed, unless enacted without change by the city council or board of selectmen, must be submitted to the electors at the next municipal or general election.__All ordinances and bylaws adopted or amended through this process apply prospectively and may not affect any grandfathered rights.

B.__For the purposes of this subsection, "grandfathered rights" includes rights pertaining to:

(1)__All existing structures and uses of structures;

(2)__All structures and uses of structures in construction or proposed for which building permits, zoning permits, subdivision approval, site plan approval or any other land use approval has been granted; and

(3)__All proposed structures and uses of structures for which written notice of intent to file an application, describing the nature of the use or uses proposed, the maximum land area that will be disturbed and not revegetated and the maximum area of occupiable space, has been sent by certified mail to all owners of record on the municipal assessment records within 500 feet of the property boundary of those proposed structures at least 90 days prior to receipt of the written petition described in paragraph A by the city council or board of selectmen and for which an application for a building permit, zoning permit, subdivision approval, site plan approval or any other land use approval has been filed prior to receipt of that written petition.