Sec. 5-30(b)

New construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure.

When such base elevation has been determined, the lowest first finished floor shall be elevated to or above the base flood elevation and meet the flood-proofing requirements for elevated structures as set forth in section 5-43(c) and (d).

All such maps shall show contours at intervals of two or five feet, depending upon the slope of the land.

A detail erosion and sedimentation and/or storm water management plan shall be submitted to the town for review and approval. All storm drainage facilities shall be designed to convey the flow of surface waters without damage to persons or property.

Fully enclosed areas of new construction or substantial improvements of structures that have areas below the established base flood elevation shall not be designed or used for human habitation, but shall be used only for parking of vehicles, building access, or limited storage of maintenance equipment...

The modification, alteration, repair, reconstruction, or improvement of any kind to a structure or use located in a floodplain, to an extent or amount of 50 percent or more of its market value, shall be undertaken only in full compliance with the provisions of this article and shall require the entire structure to conform to the Virginia Uniform Statewide Building Code.

Any modifications, alterations, repairs, reconstructions, or improvements of any kind to a structure or use located in any floodplain area to an extent or amount of less than 50 percent of its market value shall be elevated or flood-proofed in accordance with the Virginia Uniform Statewide Building Code to the greatest extent possible.

New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.

Buildings located in zone AE may be flood-proofed in lieu of being elevated provided that all areas of the building components below the base flood elevation plus one foot are watertight...

Encroachments, including fill, new construction, substantial improvements, and other development, shall be prohibited unless certification such as hydrologic and hydraulic analyses ... demonstrating that the proposed encroachment shall not result in any increase in flood levels during occurrence of the base flood.

Include, in structures located in zones A or AE, measures to automatically equalize hydrostatic flood forces on walls by allowing for the entry and exit of floodwaters. To meet this requirement, the openings shall either be certified by a professional engineer or architect or meet the following minimum design criteria: Provide a minimum of two openings on different sides of each enclosed area subject to flooding; The total net area of all openings shall be at least one square inch for each square foot of enclosed area subject to flooding; ...

Development activities which increase the water surface elevation of the base flood may be allowed, provided that the applicant first applies, with the town's endorsement, for a conditional letter of map revision, and receives the approval of the Federal Emergency Management Agency.

All manufactured homes or mobile homes to be placed or substantially improved within the special floodplain area ... shall be placed on a permanent foundation and anchored in accordance with the Virginia Uniform Statewide Building Code.

New construction or substantial improvements shall be constructed by methods and practices that minimize flood damage.

New construction or substantial improvements of any commercial, industrial, or non-residential building, or manufactured home, shall have the lowest floor, including basements, elevated to one foot above the determined base flood elevation.

All recreational vehicles placed on sites shall either: (A) Be on the site fewer than 180 consecutive days, be fully licensed, and be ready for highway use ... or (B) Meet all the permit requirements for placement and the elevation and anchoring requirements for manufactured homes...

New construction or substantial improvement of any residential structures, including manufactured homes, shall have the lowest floor, including basement, elevated to or above the determined base flood elevation.

All new or replacement sanitary sewer facilities and private package sewage treatment plants, including all pumping stations and collector systems, shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharges from the systems into the floodwaters.

Streets and sidewalks shall be designed to minimize their potential for increasing and aggravating the levels of flood flow. Drainage openings shall be required to sufficiently discharge flood flows without unduly increasing flood heights.

all subdivision proposals and other proposed development proposals, including manufactured home parks and subdivisions, that exceed five acres or 50 lots, shall include base flood elevation data.

Electrical, heating, ventilation, plumbing, air conditioning equipment and other service facilities, including ductwork, shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

All other utilities, such as gas lines and electrical, telephone, and cable television systems, being placed in flood-prone areas shall be located, elevated (where possible), and constructed to minimize the chance of impairment during a flood occurrence.

No variance shall be granted for any proposed use, development, or activity within any floodway that will cause any increase in the 100-year flood elevation without approval of a conditional letter of map revision (CLOMR).

On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding.

All new or replacement potable water facilities shall be designed to minimize or eliminate infiltration of floodwaters into the system and shall be located and constructed to minimize or eliminate flood damages.

New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters.