14.__X-zone.__"X-zone" means an area between an A-zone and the presumed high-water mark of a 500-year flood.__This zone also includes areas of 100-year shallow flooding where water depths are less than one foot or the flooded area is less than one acre in size.

Sec. 11. 38 MRSA §480-C, sub-§4 is enacted to read:

4.__Review not required.__This subsection clarifies which activities in coastal sand dune systems do not require approval pursuant to this article.

A.__The following activities have minimal impact and do not require a permit under subsection 2:

(1) Construction of a walkway or path on an area of a lot that has already been developed;

(2)__Removal of debris from a beach, as long as little or no sand is removed with the debris;

(3)__The addition of loam, up to 3 inches in depth, to maintain an existing lawn;

(4)__Removal of sand from lawns, walkways, roads, driveways, parking areas and buildings, as long as the sand is placed back into the coastal sand dune system without disturbing beach vegetation.__Sand placed on the beach must be spread out to a height no greater than 3 inches above the existing beach grade;

(5) The placement of an open fence in the coastal sand dune system to keep pedestrian traffic off dune vegetation or away from shore bird nesting or breeding areas;

(6) The replacement of an existing partial or full foundation with a post or piling foundation that complies with the requirements of section 480-AA, subsection 4 and section 480-BB, subsection 5 and allows for the free movement of sand and water and remains in the existing footprint; and

(7)__Construction of a municipal sewer or storm water outfall pipe that is buried and that has received approval from the department under department rule,