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• c) For Manufactured Homes in Zone AE or Al-30: <br /> 1. All manufactured homes that are placed or substantially improved on sites: <br /> a. outside of a manufactured home park or subdivision, <br /> b. in a new manufactured home park or subdivision, <br /> c. in an expansion to an existing manufactured home park or subdivision, or <br /> d. in an existing manufactured home park or subdivision on which a <br /> manufactured home has incurred "substantial damage" as a result of a <br /> flood, be elevated on a permanent foundation such that the lowest floor of <br /> the manufactured home is elevated 2 feet or more above the base flood <br /> elevation and be securely anchored to an adequately anchored foundation <br /> system to resist flotation, collapse, and lateral movement. <br /> 2. Require that manufactured homes be placed or substantially improved on sites <br /> in an existing manufactured home park or subdivision on the community's <br /> FIRM that are not subject to the provisions of paragraph (L) of this section be <br /> elevated so that either: <br /> a. the lowest floor of the manufactured home is 2 feet or more above the <br /> base flood elevation, or <br /> • b. the manufactured home chassis is supported by reinforced piers or other <br /> foundation elements of at least equivalent strength that are no less than 36 <br /> inches in height above grade and be securely anchored to an adequately <br /> anchored foundation system to resist flotation, collapse, and lateral movement. <br /> 3. For all substantial improvements or substantial damage to existing <br /> manufactured home,the entire structure becomes subject to the requirements <br /> of a new manufactured home. <br /> 4. For any reconstruction, rehabilitation, addition, or other improvement to an <br /> existing manufactured home that is less than a substantial improvement, only <br /> the improved area, but not the entire structure, becomes subject to the <br /> requirements of a new manufactured home. <br /> d) When a regulatory floodway has not been designated, the Floodplain <br /> Administrator must require that no new construction substantial improvements, or <br /> q � p <br /> other development(including fill) shall be permitted within Zones Al-30 and AE on <br /> the community's FIRM, unless it is demonstrated that the cumulative effect of the <br /> proposed development, when combined with all other existing and anticipated <br /> development, will not increase the water surface elevation of the base flood more than <br /> one foot at any point within the community. <br /> • 21 <br />