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E. The applicant shall provide an elevation certificate signed by a licensed surveyor or civil engineer <br />certifying that the actual elevations (in relation to mean sea level) of the lowest floor (including <br />basement) and all attendant utilities of all new or substantially improved residential structures including <br />manufactured dwellings meet the requirements of MCC 17.178.060(A), (B) and (C), where applicable, as <br />follows: <br /> 1. Prior to construction (based on construction drawings); and <br /> 2. Once the floor elevation can be determined (based on the building under construction); and <br /> 3. Prior to occupancy (based on finished construction). <br /> <br /> Provision of these elevation certificates for the restroom structure will be a condition of approval. <br /> <br />12. Marion County Code 17.178.060 C, D, E, F, & H pertain to this project and engineer certification that these <br />criteria are met will be made a condition of approval. <br /> <br /> C. Nonresidential Development. <br /> 1. New construction and substantial improvement of any commercial, industrial or other nonresidential <br />structures shall either have the lowest floor, including basement, elevated to two feet above the level of <br />the base flood elevation, and where the base flood elevation is not available, the lowest floor, including <br />basement, shall be elevated to two feet above the highest adjacent natural grade (within five feet) of the <br />building site, or together with attendant utility and sanitary facilities shall: <br /> a. Be floodproofed to an elevation of two feet above base flood elevation or, where base flood <br />elevation has not been established, two feet above the highest adjacent grade, so that the <br />structure is watertight with walls substantially impermeable to the passage of water. <br /> b. Have structural components capable of resisting hydrostatic and hydrodynamic loads and <br />effects of buoyancy. <br /> c. Be certified by a registered professional engineer or architect that the design and methods of <br />construction are in accordance with accepted standards of practice for meeting provisions of this <br />subsection based on their development and/or review of the structural design, specifications, and <br />plans. This certificate shall include the specific elevation (in relation to mean sea level) to which <br />such structures are floodproofed and shall be provided to the floodplain administrator. <br /> d. Nonresidential structures that are elevated, not floodproofed, must meet the same standards <br />for space below the lowest floor as described in subsections (A)(5) and (6) of this section. <br /> e. Applicants floodproofing nonresidential buildings shall be notified by the zoning administrator <br />that flood insurance premiums will be based on rates that are one foot below the floodproofed <br />level (e.g., a building constructed to the base flood level will be rated as one foot below that <br />level). <br /> <br />The applicant plans to wet-floodproof the restroom to two feet above the base flood elevation. They attest <br />that the restroom structure will be capable of resisting hydrostatic and hydrodynamic loads. The applicant <br />attests that design and methods of construction are certified by a professional architect and structural <br />engineer. The plan is to wet-floodproof the restroom structure, though a portion for storage will be dry- <br />floodproofed. Because the building is being wet-floodproofed the variance criteria in (MCC 17.178.090) <br />will apply and are addressed in section 13 of this document. Provision of the required engineer <br />certification to Marion County Planning shall be a condition of approval. <br /> <br /> This criterion does not apply to the propane tanks or grading because these elements do not constitute <br />structures. <br /> <br /> D. Anchoring. <br /> 1. All new construction and substantial improvements shall be anchored to prevent flotation, collapse or <br />lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the <br />effects of buoyancy. <br /> <br /> This applies to the restroom structure and propane tanks. Provision of this engineer certification to Marion <br />County Planning shall be a condition of approval for all three components of the project.