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(2) Base Flood Elevation changes due to physical alterations: a. Within 6 months of information becoming available or project completion, whichever comes first, the floodplain administrator shall submit or assure that the permit applicant submits technical or scientific data to FEMA for a Letter of Map Revision (LOMR). b. All LOMR's for flood control projects are approved prior to the issuance of building permits. Building Permits must not be issued based on Conditional Letters of Map Revision (CLOMR's). Approved CLOMR's allow construction of the proposed flood control project and land preparation as specified in the "start of construction" definition. Such submissions are necessary so that upon confirmation of those physical changes affecting flooding conditions, risk premium rates and floodplain management requirements are based on current data. (3) Changes in corporate boundaries: Notify FEMA in writing whenever the corporate boundaries have been modified by annexation or other means and include a copy of a map of the community clearly delineating the new corporate limits. (e) Documentation of Floodplain Development. Obtain and maintain for public inspection and make available as needed the following: (1) Certification required by sections 7-17(c)(1) and 7-20 (lowest floor elevations); (2) Certification required by section 7-17(c)(2) (elevation or floodproofing of nonresidential structures); (3) Certification required by section 7-14(c)(3) (wet floodproofing standard); (4) Certification of elevation required by section 7-19(a)(3) (subdivisions and other proposed development standards); (5) Certification required by section 7-22(b) (floodway encroachments); and (6) Maintain a record of all floodplain variance actions, including justification for their issuance, and report such floodplain variances issued in its biennial report submitted to the Federal Emergency Management Agency. (f) Map Determination. Ordinance No. NS-XXX Page 14 of 27 11A-14