07-18-2016 Planning Commission Packet

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1 (11) Manufactured homes and recreational vehicles must meet the standards of Section 9 of this ordinance. 2 78-1126 Conditional Uses: The following uses and activities may be allowed as conditional uses,if allowed in the 3 underlying zoning district(s)or any applicable overlay district,following the procedures in Section 10.4 of this 4 ordinance. 5 (1) Any structure that is not elevated on fill or floodproofed in accordance with Sections 78-1125 (1)and(2)of 6 this ordinance. 7 (2) Storage of any material or equipment below the regulatory flood protection elevation. 8 (3) The cumulative placement of more than 1,000 cubic yards of fill when the fill is not being used to elevate a 9 structure in accordance with Section 78-1125(1)of this ordinance. 10 (4) Optional The use of inethods to elevate structures above the regulatory flood protection elevation, 11 including stilts, pilings, parallel walls,or above-grade,enclosed areas such as crawl spaces or tuck under 12 garages,shall meet the standards in Section 78-1127(6). 13 78-1127 Standards for Flood Fringe Conditional Uses: 14 (1) The standards listed in Sections 5.24 through 5.30 apply to all conditional uses. 15 (2) Basements,as defined by Section 2.913 of this ordinance,are subject to the following: 16 (a) Residential basement construction is not allowed below the regulatory flood protection elevation. 17 (b) Non-residential basements may be allowed below the regulatory flood protection elevation provided 18 the basement is structurally dry floodproofed in accordance with Section 78-1127(3)of this ordinance. 19 (3) All areas of nonresidential structures, including basements,to be placed below the regulatory fiood 20 protection elevation must be fioodproofed in accordance with the structurally dry floodproofing 21 classifications in the State Building Code. Structurally dry floodproofing must meet the FP1 or FP2 22 floodproofing classification in the State Building Code,which requires making the structure watertight with 23 the walls substantially impermeable to the passage of water and with structural components capable of 24 resisting hydrostatic and hydrodynamic loads and the effects of buoyancy. 25 (4) The placement of more than 1,000 cubic yards of fill or other similar material on a parcel (other than for 26 the purpose of elevating a structure to the regulatory flood protection elevation)must comply with an 27 approved erosion/sedimentation control plan. 28 (a)The plan must clearly specify methods to be used to stabilize the fill on site for a flood event at a 29 minimum of the regional(1%chance)flood event. 30 (b)The plan must be prepared and certified by a registered professional engineer or other qualified 31 individual acceptable to the City of Orono. 32 (c) The plan may incorporate alternative procedures for removal of the material from the floodplain if 33 adequate flood warning time exists. 34 (5) Storage of materials and equipment below the regulatory flood protection elevation must compiy with an 35 approved emergency plan providing for removal of such materials within the time available after a flood 36 warning. 37 (6) (OPTIONAL)Alternative elevation methods other than the use of fill may be utilized to elevate a 38 structure's lowest floor above the regulatory flood protection elevation.The base or floor of an enclosed 39 area shall be considered above-grade and not a structure's basement or lowest floor if: 1)the enclosed 40 area is above-grade on at least one side of the structure;2)it is designed to internally flood and is 41 constructed with flood resistant materials;and 3) it is used solely for parking of vehicles, building access or 42 storage.The above-noted alternative elevation methods are subject to the following additional standards: Flood Plain Ordinance Page 9