Sec. 5. 38 MRSA §480-B, sub-§§5-B to 5-D are enacted to read:

5-B.__Lot.__"Lot" means all contiguous areas under a single ownership constituting a piece of land measured and marked by metes and bounds descriptions or by some other approved surveying technique.

5-C.__Maintenance and repair.__"Maintenance and repair" means work done to less than 50% of a structure to prevent decline, to hold or preserve it in an existing state or condition or to restore it to sound condition after damage or decay.

5-D.__National Geodetic Vertical Datum or NGVD.__"National Geodetic Vertical Datum" or "NGVD" means the base elevation point from which land measurements are derived.

Sec. 6. 38 MRSA §480-B, sub-§§6-A to 6-C are enacted to read:

6-A.__Ocean storm.__"Ocean storm" means a low-pressure system often accompanied by flooding or erosion of the coastal sand dune system.

6-B.__Open fence.__"Open fence" means a fence through which water, wind and sand can easily move.

6-C.__Overwash.__"Overwash" means the deposit left after a highwater pulse over tops or breaches the dune line of a barrier beach.

Sec. 7. 38 MRSA §480-B, sub-§7, as amended by PL 1999, c. 243, §11, is repealed and the following enacted in its place:

7.__Permanent structure.__"Permanent structure" means any structure constructed or erected with a fixed location or attached to a structure with a fixed location for a period exceeding 7 months each year.__"Permanent structure" includes, but is not limited to: causeways, piers, docks, concrete slabs, piles, marinas, retaining walls, buildings, swimming pools, fences, seawalls, roads, driveways, parking areas and walkways.__Natural features, such as frontal dunes, are not considered permanent structures.__For the purposes of this article the following are not considered to be permanent structures:

A.__Open decks that do not exceed a total of 200 square feet that are supported by posts and are elevated at least 3