A. Residential Construction. New construction and substantial improvement of any residential structure shall have the lowest floor (including basement), electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities (including ductwork) elevated to one foot (1') above the base flood elevation. Upon completion of the structure, the elevation of the lowest floor, including basement, shall be certified by a registered Colorado professional engineer, architect, or land surveyor. Such certification shall be submitted to the Floodplain Administrator.

B. Nonresidential Construction. With the exception of critical facilities, outlined in PMC 15.05.380, new construction and substantial improvements of any commercial, industrial, or other nonresidential structure shall either have the lowest floor (including basement), electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities (including ductwork) elevated to one foot (1') above the base flood elevation or, together with attendant utility and sanitary facilities, be designed so that at one foot (1') above the base flood elevation the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered Colorado professional engineer or architect shall develop and/or review structural design, specifications, and plans for the construction, and shall certify that the design and methods of construction are in accordance with accepted standards of practice as outlined in this subsection. Such certification shall be maintained by the Floodplain Administrator, as stated in PMC 15.05.240.

C. Enclosures. New construction and substantial improvements, with fully enclosed areas below the lowest floor that are usable solely for parking of vehicles, building access, or storage in an area other than a basement and which are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of flood waters. Designs for meeting this requirement must either be certified by a registered Colorado professional engineer or architect or meet or exceed the following minimum criteria:

D. Manufactured Homes. All manufactured homes that are placed or substantially improved within Zones A1-30, AH, and AE on the flood insurance rate map on sites (1) outside of a manufactured home park, (2) in a new manufactured home park, (3) in an expansion to an existing manufactured home park, or (4) in an existing manufactured home park on which manufactured home has incurred substantial damage as a result of a flood, shall be elevated on a permanent foundation such that the lowest floor of the manufactured home, electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities (including ductwork) are elevated to one foot (1') above the base flood elevation and be securely anchored to an adequately anchored foundation system to resist flotation, collapse, and lateral movement. All manufactured homes, placed or substantially improved on sites in an existing manufactured home park within Zones A1-30, AH and AE on the FIRM that are not subject to provisions (1), (2), (3) or (4) above, shall be elevated so that either:

E. Recreational Vehicles. All recreational vehicles placed on sites within Zones A1-30, AH, and AE on the FIRM either:

F. Prior Approved Activities. Any activity for which a floodplain development permit was issued by the Town or a CLOMR was issued by FEMA prior to February 11, 2014, may be completed according to the standards in place at the time of the permit or CLOMR issuance and will not be considered in violation of this chapter if it meets such standards. (Ord. 711 §1 (Exh. A), 2017)