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(6) Upon consideration of the factors listed above and the purposes of this ordinance, the appeal board may attach such conditions to the granting of variances as it deems necessary to further the purposes of this ordinance. (7) Variances shall not be issued within any designated floodway if any increase in flood levels during the base flood discharge would result. (8) Conditions for Variances: (a) Variances shall only be issued upon a determin- ation that the variance is the minimum necessary, considering the flood hazard, to afford relief. (b) Variances shall only be issued upon {i-) a showing of good and sufficient ca~se, (ii) a determination that failure to grant the variance would result in exceptional hardship to the applicant, and (iii) a determination that the granting of a variance will not result in increased flood heights, additional threats to public safety, extraordinary public espense, create nuisances, cause fraud on or victimization of the public, or con- flictwith existing local laws or ordinances. (c) Any applicant to whom a variance is granted shall be given a written notice that the cost of flood insurance will be commensurated with the increased risk resulting from the reduced lowest floor elevation. (d) The Building Commissioner shall maintain the records of all appeal actions and report any variances to the Federal Insurance Administration upon request. Section 12. General Standards for Flood Hazard Reduction. In all areas of special flood hazards the following provisions are required: (1) All new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure~ (2) All new construction and substantial improvements shall be constructed 'with materials and utility equipment resistant to flood damage. (3) All new construction or substantial improvements Shall be constructed by methods and practices that minimize flood damages; {4) All new and replacement water supply systems shall be designed to minimize o~ climinate infiltration of flood waters into the systems {5) New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters; and, {6)Onsite waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding. (7)The storage or processing ofmaterials that are in time of flooding buoyant, flanmmble, explosive, or could be injurious to human, animal or palnt life is prohibited. {8)Storage of other material or equipmentmay be allowed if not subject to major damage by floods and firmly anchored to prevent flotation or if readily removable from the area within the time available after flood warning. {g)Mobile homes, as defined herein, are subject to all the restriction. applicable to other residential construction, as described in Chapter 6, Building Code of University City. -6-