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Surrounding uses consist of commercial farm uses on all sides on land zoned EFU. The applicant proposes to expand the existing dwelling on the property by removing a previous 12 foot addition and replace it with a 4 foot addition. Ail commenting agencies stated no objection to the proposal. Flood Insurance Rate Map 9410154 0275 C indicates that the floodplain elevation is approximately 313 feet above mean sea level (MSL). Flood Boundary and Floodway Map #410154 0016 identifies a portion of the subject property as being within the identified floodway of Mill Creek. The dwelling and the proposed expansion are not located within the floodway. The purpose of the Floodplain Overlay zone is to promote the public health, safety and general welfare, and to minimize public and private losses due to flood conditions. The criteria and standards which must be met for the expansion are contained in Section 178.060 of the Marion County Zoning Ordinance. Section 178.060 (a) (1) requires that the lowest floor be elevated to one foot above the base flood elevation of 313 feet MSL. The applicant proposes to locate the structure at an elevation of 314 feet MSL. Section 178.060 (a) (4) requires that a registered profes- sional engineer or architect certify that enclosed areas below the lowest floor are designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Section 178.060 d (1) requires all new construction and substantial improvements shall be anchored to prevent flotation, collapse, or lateral movement of the structure. This requirement also needs to be cer- tified. Section 178.060 (e) (1) and (2) state the following= "Ail new construction and substantial improve- ments below base flood level shall be con- structed with materials and utillty equipment resistent to flood damage, and the design and methods of construction are in accord with accepted standards of practice based an en- gineer's or architect's review of the plans and specifications. Ail new construction and substantial improve- ments shall be constructed using methods and practices that minimize flood damages." A statement from an engineer or architect that these require- ments are met is also required.