A. Installation of watertight doors, bulkheads, shutters or similar methods of closure;

B. Reinforcement of walls to resist water pressures;

C. Use of paints, membranes or mortars to reduce seepage of water through walls;

D. Addition of mass or weight to structures to resist flotation;

E. Installation of pumps to lower water levels in structures;

F. Installation of pumps or comparable facilities for subsurface drainage systems to relieve external foundation wall and basement flood pressures;

G. Building design and construction to resist rupture or collapse caused by water pressure or floating debris;

H. Location and installation of all electrical equipment, circuits, appliances and heating systems so that they are protected from inundation by the regulatory flood;

I. Location of storage facilities for chemicals, explosives, buoyant materials, flammable liquids or other toxic materials which could be hazardous to public health, safety and welfare; or design of such facilities to prevent flotation of storage containers which could result in the escape of toxic materials into floodwaters;

J. Use of materials such as sheathing, siding, subflooring and underlayment that are not subject to water damage due to prolonged submersion below regulatory flood level;

K. Use of closed cell insulation to prevent water logging and consequent loss of insulating ability below the regulatory flood level;

L. Location of oil storage tanks outside the structure and anchoring to prevent disturbance by floodwater. Tanks should be placed upon and secured to a concrete slab of sufficient volume to prevent flotation. In the calculation of required anchorage, little recognition should be given to shear or friction values of the soils as they will be substantially reduced due to saturation. Both fill and vent pipes should extend above the expected high water level;

M. Installation of a backwater valve in sewer lines in an accessible location immediately adjacent to the exterior foundation wall. [Ord. 10-15 § 2.]