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426 Annual Town Meeting -9- May 1, 1978 Page five and Page ten dated October 19, 1977, (which are on file with the Town Clerk, Planning Board and Building Inspector), shall be approved subject to other laws and bylaws applicable thereto and to the following: 1. New construction or substantial improvement* (repair, con- struction or alteration costing 500 or more of the market value of the structure before improvement, or if damaged, before damage occurred), of residential structures shall have the lowest floor (including basement), elevated to not less than base flood elevations. New construction or substantial improvement of nonresidential structures shall either be similarly elevated or, together with attendent utility and sanitary facilities, be flood -proofed to not less than base flood elevations. *(Substantial improvement will have been deemed to occur when the first alteration of any structural part of the building commences) 2. Where floodproofing is required in accordance with Sec- tion 1, a registered engineer or architect shall certify that the flood -proofing methods are adequate to withstand the flood depths, pressures, velocities, impact and uplift forces, and other factors associated with the base flood. 3. Any new construction or substantial improvement to be undertaken within said zones shall be in accordance with the Massachusetts Uniform Building Code, Section 748.0 as amended. The Building Inspector shall (a) review all pro- posed development within the flood zones to assure that all necessary permits which are obtainable at such time have been received from those government al agencies from which approval is required by Federal or State law, includ- ing Section 4040 of the Federal Water Pollution Control Amendments of 1972, 33 U.S.C. 1334. (b) obtain and main- tain records of elevation and flood -proofing levels for new construction or substantial improvement within the flood zones. 4. No land within areas designed as V (velocity) on the F.I.A. Flood Rate Maps shall be developed unless such development is demonstrated by the applicant to be located landward:iof the reach of the mean high tide. Notwithstanding the ap- plicable provisions of the Massachusetts Uniform Building Code, all new construction and substantial improvement within the V Zones shall be (a) elevated on adequately anchored pilings or columns, and securely anchored to such piles or columns so that the lowest portion of the struc- tural members of the lowest floor (excluding the pilings or columns), is elevated to or above the base flood eleva- tion; and (b) certified by a registered professional engineer or architect that the structure is securely an- chored to adequately anchored pilings or columns in order to withstand velocity waters and hurricane wave wash. The following shall be prohibited with said V zones. (A) Any man-made alteration of sand dunes which might in- crease the potential for flood damage. (B) Use of fill for structural support for new construction or substantial improvement of structures. (C) Mobile homes (except in existing mobile home parks and existing mobile home subdivisions). 5. The Zoning Board of Appeals may authorize a use variance within the flood areas, as in any other zoning district within the Town of Mashpee, and may vary the restrictions and requirements set forth in this section in the case of new structures or where there is to be substantial improve- ments or other development on a lot of one-half acre in size or less, contiguous to and surrounded by lots with existing structures constructed below the base flood eleva- tion, provided the following are met: (A) A showing of good and sufficient cause. (B) A determination that failure to grant the Special Per- mit would result in exceptional hardship to the applicant.