FP24-007 Staff Decision - Laserfiche WebLink

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This criterion does not apply to the grading. E. Construction Materials and Methods. 1. All new construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage, and the design and methods of construction are in accord with accepted standards of practice based on an engineer’s or architect’s review of the plans and specifications. 2. All new construction and substantial improvements shall be constructed using methods and practices that minimize flood damages. The applicant attests that the restroom facility will be constructed with materials resistant to flood damage. The interior will be porcelain tile set in mortar atop a backerboard substrate. Exterior walls and inside of roof will be insulated with closed-cell foam. Provision of this engineer certification to Marion County Planning shall be a condition of approval. This criterion does not apply to the propane tanks or grading for roadways because these elements of the project do not constitute new construction or substantial improvements. F. Utilities. 1. All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system as approved by the State Health Division. 2. New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters in the systems and discharge from the systems into floodwaters. 3. On-site waste disposal systems shall be designed and located to avoid impairment to them or contamination from them during flooding consistent with the requirements of the Oregon State Department of Environmental Quality. 4. Electrical, heating, ventilation, plumbing, duct systems, air-conditioning and other equipment and service facilities not installed so as to prevent water from entering or accumulating within the components during conditions of the base flood shall be elevated to one foot above the level of the base flood elevation. Where the base flood elevation is not available, the electrical, heating, ventilation, plumbing and air-conditioning equipment shall be elevated to one foot above the highest adjacent natural grade (within five feet) of the building site. If replaced as part of a substantial improvement the utility equipment and service facilities shall meet all the requirements of this subsection. The applicant attests that all utilities will be elevated at least two feet above BFE. The septic system has been designed to withstand impairment or contamination due to flooding and shall adhere to the relevant OAR Chapter 340, Division 71 & 73 rules. The entire septic system will be designed, constructed and tested per the DEQ permit. Compliance with these criteria shall be a condition of approval for the restroom facility. Compliance with the criterion in F(4) shall be a condition of approval for the propane tanks. H. Storage of Materials and Equipment. Materials that are buoyant, flammable, obnoxious, toxic or otherwise injurious to persons or property, if transported by floodwaters, are prohibited. Storage of materials and equipment not having these characteristics is permissible only if the materials and equipment have low damage potential and are anchored or are readily removable from the area within the time available after forecasting and warning. The applicant acknowledged this requirement and does not plan to store any materials of this nature at the campground. Continued compliance shall be a condition of approval. L. Tanks. 1. Underground tanks shall be anchored to prevent flotation, collapse and lateral movement under conditions of the base flood. 2. Above-ground tanks shall be installed to one foot above the base flood level or shall be anchored to prevent flotation, collapse, and lateral movement under conditions of the base flood.