Ordinance 842 - Laserfiche WebLink

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d. When at any one time a property owner or contractor wants to locate more than 1,000 cubic yards of fill or other similar material on a parcel for activities such as on -site storage, landscaping, sand and gravel operations, landfills, roads, dredge spoil disposal or construction of flood control works, the owner or contractor shall submit an erosion/sedimentation control plan to the City for approval. The plan must clearly specify methods that an owner or contractor shall use to stabilize the fill on site for a flood event at a minimum of the 100 -year or regional flood event. A registered professional engineer must prepare the plan. The plan may incorporate alternative procedures for removal of the material from the flood plain if adequate flood warning time exists. e. Storage of Materials and Equipment: (1) The City prohibits the storage or processing of materials that are, in time of flooding, flammable, explosive, or potentially injurious to human, animal, or plant life. (2) The City may allow the storage of other materials or equipment if they would be readily removable from the area within the time available after a flood warning is given and according to a plan that the City has approved. f. The provisions of Section 1301.05, Subd.5 (below) of this Chapter also shall apply. Subd. 5. Standards for All Flood Fringe Uses: a. All new principal structures in the flood fringe district must have vehicular access at or above an elevation not more than two (2) feet below the regulatory flood protection elevation. If the City approves a variance from this requirement, the City must specify limitations on the period of use or occupancy of the structure for times of flooding. In order to approve a variance from this requirement, the City must determine that adequate flood warning time and local flood emergency response procedures exist. b. Commercial Uses: Accessory commercial land uses, such as yards, railroad tracks, and parking lots (if allowed by the underlying City zoning designation) may be at elevations lower than the regulatory flood protection elevation. However, the City shall not approve a permit for such facilities for use by employees or by the general public in the absence of a flood warning system. Such a flood warning system shall provide adequate time for evacuation if the area would be inundated to a depth and velocity such that when multiplying the depth (in feet) times velocity (in feet per second) the product number exceeds four (4) upon occurrence of the regional flood. c. Manufacturing and Industrial Uses: Owners and operators of manufacturing and industrial uses shall take measures to minimize the interference of normal plant operations from flooding, especially those sites along streams or creeks that have protracted flood durations. Certain accessory land uses such as yards and parking lots may be at lower elevations subject to requirements set out in Section 1301.05, Subd. 5 b above. In considering development or permit applications for manufacturing or industrial uses, the City shall give due consideration to the needs of an industry whose business requires that it be located in flood plain areas. d. Contractors shall properly compact fill and properly protect the slopes by using riprap, vegetative cover or other acceptable methods. The Federal Emergency Management Agency (FEMA) has established criteria for removing the special flood hazard area designation for structures properly elevated on fill above the 100 -year flood elevation. FEMA's requirements incorporate specific fill compaction and side slope protection standards for multi structure or 10 April 29, 2010