Sec. 21-973, 21-974, 21-976, 21-977, 21-978

Other

• Anchoring to prevent flotation, collapse, or lateral movement

  New construction and substantial improvements shall be built according to this article and the VA USBC, and anchored to prevent flotation, collapse or lateral movement of the structure.

• Elevation certificate required

  Review all permit applications to determine whether the proposed development is in an area where the base flood elevation is known... the floodplain administrator shall require the applicant to provide an elevation certificate.

• Existing structures must conform when changed

  Any structure or use of a structure or premises must be brought into conformity with these provisions when it is changed, repaired or improved unless one of the following exceptions is established before the change is made.

• Maintain flood-carrying capacity

  The flood-carrying capacity within an altered or relocated portion of any watercourse shall be maintained.

• Flood-resistant materials and equipment

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

• On-site waste disposal location

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

• Penalty for violations

  Any person who fails to comply with any of the requirements or provisions of this article or directions of the floodplain administrator... shall be guilty of the appropriate violation and subject to the penalties thereof.

• Records maintained in perpetuity

  Records of actions associated with administering this article shall be kept on file and maintained by or under the direction of the floodplain administrator in perpetuity.

• Sanitary sewage system design

  New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharges from the systems into floodwaters.

• Required site plan information

  The elevation of the base flood at the site; the elevation of the lowest floor (including basement); for structures to be floodproofed, the elevation to which the structure will be floodproofed; topographic information showing existing and proposed ground elevations.

• Base flood elevation data for subdivisions

  Base flood elevation data shall be obtained from other sources or developed using detailed methodologies... for subdivision proposals and other proposed development proposals that exceed five lots or five acres, whichever is the lesser.

• Subdivision proposals minimize flood damage

  All subdivision proposals shall be consistent with the need to minimize flood damage; shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage; shall have adequate drainage provided to reduce exposure to flood hazards.

• Utility design to prevent water entry

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

• VarianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. criteria

  Variances shall be issued only upon: (1) a showing of good and sufficient cause; (2) after the board of zoning appeals has determined that failure to grant the variance would result in exceptional hardship to the applicant; and (3) after the board of zoning appeals has determined that the granting of such variance will not result in unacceptable or prohibited increases in flood heights...

• VarianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. lot size limit21,780 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  While the granting of variances generally is limited to a lot size less than one-half acre, deviations from that limitation may occur.

• Water supply system design

  New and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system.

• Permit for watercourse alteration

  Prior to any proposed alteration or relocation of any channels or of any watercourse, stream, etc., within this jurisdiction a permit shall be obtained from the U.S. Corps of Engineers, the Virginia Department of Environmental Quality, and the Virginia Marine Resources Commission.

• Zoning permit required for all development in floodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions.

  All uses, activities and development occurring within any floodplain district, including placement of manufactured homes, shall be undertaken only upon the issuance of a zoning permit.