Grant variances from the dimensional requirements of the following provisions: a. Article 3, Zoning Districts, Table 3.12.1 Development Standards as to minimum lot area, minimum lot width and maximum height; provided however that pursuant to Section 4-5.A.2.c. of the Comprehensive Plan, no variance shall be granted authorizing a height in excess of 4 stories or 40 feet. b. Article 3, Zoning Districts, Table 3.12.2 Structure Setbacks. c. Article 3, Zoning Districts, division 5. Planned Unit Developments, Sec 3.242.-only as to the encroachment of an existing structure into a required setback. d. Article 3, Zoning Districts, Division 7. Category "C" Zoning District Standards as to building site area regulations; front, rear, and side yard requirements; required lot area and width; and minimum floor area. e. Article 4, division 1, Wetlands Protection, section 4.3.A.12., as to compliance with structure setbacks to protect existing view corridors on adjacent waterfront properties. f. Article 4, division 1, Barrier Island and Sea Turtle Protection, section 4.106.D., setback requirements. Adopt rules of procedure not inconsistent with the provisions of the Land Development Regulations. To approve eminent domain waivers pursuant to sections 8.5. and 8.6., Land Development Regulations. To approve variances from the provision of chapter 67, article 10, Noise, General Ordinances, Martin County pursuant to section 67.308, General Ordinances, Martin County Code.