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. (E) When at anyone time more than 1,000 cubic yards of fill or other similar material is located on a parcel for such activities as on-site storage, landscaping, sand and gravel operations, landfills, roads, dredge spoil disposal or construction of flood control works, an erosion/sedi- mentation control plan must be submitted unless the community is enforcing a state approved shoreland manage- ment ordinance. In the absence of a state approved shoreland ordinance, the plan must clearly specify methods to be used to stabilize the fill on site for a flood event at a minimum of the lOa-year or regional flood event. The plan must be prepared and certified by a registered pro- fessional engineer or other qualified individual accept- able to the City. The plan may incorporate alternative procedures for removal of the material from the flood plain if adequate flood warning time exists. (F) storage of Materials and Equipment: (l) The storage or processing of materials that are, in time of flooding, flammable, explosive, or poten- tially injurious to human, animal, or plant life is prohibited. (2) Storage of other materials or equipment may be allowed if readily removable from the area within . the time available after a flood warning and in accordance with a plan approved by the City Council. (G) The provisions of Section 9.6-22 shall also apply. Section 9.6-22. Standards for All Flood Fringe Uses: (A) All new principal structures must have vehicular access at or above an elevation not more than two (2) feet below the Regulatory Flood Protection Elevation. If a variance to this requirement is granted, the Board of Adjustment must specify limitations on the period of use or occupancy of the structure for times of flooding and only after determining that adequate flood warning time and local flood emergency response procedures exist. (B) Commercial Uses. Accessory land uses, such as yards, railroad tracks, and parking lots may be at elevations lower than the Regulatory Flood Protection Elevation. However, a permit for such facilities to be used by the employees or the general public shall not be granted in the absence of a flood warning system that provides adequate time for evacuation if the area would be inundated to a depth greater than two (2) feet or be subject to flood velocities greater that four (4) feet per . second upon occurrence of the regional flood. 12