15.20.070 General standards.
In all areas of special flood hazards, the following standards are required:
A. Anchoring.
1. All new construction and substantial improvements shall be anchored to prevent floatation, collapse, or lateral movement of the structure.
2. All mobile homes shall be anchored to resist floatation, collapse, or lateral movement by providing over the top and frame ties to ground anchors. Specific requirement shall be that:
a. Over the top ties be provided at each of the four corners of the mobile home, with two additional ties per side at intermediate locations, with mobile homes less than fifty (50) feet long requiring one additional tie per side;
b. Frame ties be provided at each corner of the home with five additional ties per side at intermediate points, with mobile homes less than fifty (50) feet long requiring four additional ties per side;
c. All components of the anchoring system be capable of carrying a force of four thousand eight hundred (4,800) pounds; and
d. Any additions to the mobile home be similarly anchored.
B. Construction Materials and Methods.
1. All new construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.
2. All new construction and substantial improvements shall be constructed using methods and practices that minimize flood damage.
C. Utilities.
1. All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system;
2. New and replacement sanitary sewer systems shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharge from the systems into floodwaters; and
3. On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding.
D. Subdivision Proposals.
1. All subdivision proposals shall be consistent with the need to minimize flood damage;
2. All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage;
3. All subdivision proposals shall have adequate drainage provided to reduce exposure to flood damage; and
4. Base flood elevation data shall be provided for subdivision proposals and other proposed development which contain at least fifty (50) lots or five acres, whichever is less.
E. Encroachments. Any proposed development shall be analyzed to determine the effects on the flood carrying capacity of the area of special flood hazard as set forth under permit review, Section 15.20.050. (Ord. 1-1981 § 10, 1981.)