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9.22 Flood Plain Ordinance 11. 12. The expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters expected at the site. Such other factors which are relevant to the purposes of this Ordinance. fo Time for Acting on Application. The City Council shall act on an application in the manner described above within sixty (60) days of the adjournment of the Planning and Zoning Commission public hearing except that where additional information is required pursuant to §9.22.10 Subd. 4d of this ordinance. The City Council shall render a written decision within thirty (30) days from the receipt of such additional information. Conditions Attached to Conditional Use Permits. Upon consideration of the factors listed above and the purpose of this ordinance, the City Council shall attach such conditions to the granting of Conditional Use Permits as it deems necessary to fulfill the purposes of this ordinance. Such conditions may include, but are not limited to, the following: 1. Modification of waste treatment and water supply facilities. 2. Limitations on period of use, occupancy, and operation. 3. Imposition of operational controls, sureties, and deed restrictions. 4. Requirements for construction of channel modifications, compensatory storage, dikes, levees, and other protective measures. 5. Flood-proofing measures, in accordance with the State Building Code and this ordinance. The applicant shall submit a plan or document certified by a registered professional engineer or architect that the flood-proofing measures are consistent with the Regulatory Flood Protection Elevation and associated flood factors for the particular area. 9.22.11 Nonconforming Uses Subd. I A structure or the use of a structure or premises which was lawful before the passage or amendment of this ordinance but which is not in conformity with the provisions of this ordinance may be continued subject to the following conditions: No such use shall be expanded, changed, enlarged, or altered in a way which increases its nonconformity. bo Any alteration or addition to a nonconforming structure or nonconforming use which would result in increasing the flood damage potential of that structure or use shall be protected to the Regulatory Flood Protection Elevation in accordance with any of the elevation on fill or flood proofing techniques ( i.e., FP-1 thru FP-4 floodproofing classifications) allowable in the State Building Code, except as further restricted in §9.22.11 Subd. lc. The cost of any structural alterations or additions to any nonconforming structure over the life of the structure shall not exceed 50 percent of the market value of the structure unless the conditions of this Section are satisfied. The cost of all structural alterations and additions constructed since the adoption of the Community's initial flood plain controls must be 4/29/92 17 Draft