The following standards apply to new development, including new and substantially improved structures, in the areas of special flood hazard shown on the Flood Insurance Rate Map designated in §
175-6.
A. Subdivision proposals. The following standards apply
to all new subdivision proposals and other proposed development in
areas of special flood hazard (including proposals for manufactured
home and recreational vehicle parks and subdivisions):
(1) Proposals shall be consistent with the need to minimize
flood damage.
(2) Public utilities and facilities such as sewer, gas,
electrical and water systems shall be located and constructed so as
to minimize flood damage.
(3) Adequate drainage shall be provided to reduce exposure
to flood damage.
B. Encroachments.
(1) Within Zones A1-A30 and AE, on streams without a regulatory
floodway, no new construction, substantial improvements or other development
(including fill) shall be permitted unless:
(a)
The applicant demonstrates that the cumulative
effect of the proposed development, when combined with all other existing
and anticipated development, will not increase the water surface elevation
of the base flood more than one foot at any location; or
(b)
The Town of Yorktown agrees to apply to the
Federal Emergency Management Agency (FEMA) for a conditional FIRM
revision, FEMA approval is received and the applicant provides all
necessary data, analyses and mapping and reimburses the Town of Yorktown
for all fees and other costs in relation to the application. The applicant
must also provide all data, analyses and mapping and reimburse the
Town of Yorktown for all costs related to the final map revision.
(2) On streams with a regulatory floodway, as shown on the Flood Boundary and Floodway Map or the Flood Insurance Rate Map adopted in §
175-6, no new construction, substantial improvements or other development in the floodway (including fill) shall be permitted unless:
(a)
A technical evaluation by a licensed professional
engineer shows that such an encroachment shall not result in any increase
in flood levels during occurrence of the base flood; or
(b)
The Town of Yorktown agrees to apply to the
Federal Emergency Management Agency (FEMA) for a conditional FIRM
and floodway revision, FEMA approval is received and the applicant
provides all necessary data, analyses and mapping and reimburses the
Town of Yorktown for all fees and other costs in relation to the application.
The applicant must also provide all data, analyses and mapping and
reimburse the Town of Yorktown for all costs related to the final
map revisions.
The following standards in addition to the standards in §
175-14, General standards, and §
175-15, Standards for all structures, apply, as indicated, in areas of special flood hazard to manufactured homes and to recreational vehicles which are located in areas of special flood hazard.
A. Recreational vehicles.
(1) Recreational vehicles placed on sites within Zones
A1-A30, AE and AH shall either:
(a)
Be on site fewer than 180 consecutive days;
(b)
Be fully licensed and ready for highway use;
or
(c)
Meet the requirements for manufactured homes in Subsections
B,
C and
D below.
(2) A recreational vehicle is ready for highway use if
it is on its wheels or jacking system, is attached to the site only
by quick-disconnect type utilities and security devices and has no
permanently attached additions.
B. A manufactured home that is placed or substantially
improved in Zones A1-A30, AE and AH shall be elevated on a permanent
foundation such that the lowest floor is elevated to or above the
base flood elevation and is securely anchored to an adequately anchored
foundation system to resist flotation, collapse and lateral movement.
C. Within Zone A, when no base flood elevation data are
available, new and substantially improved manufactured homes shall
be elevated such that the manufactured home chassis is supported by
reinforced piers or other foundation elements of at least equivalent
strength that are no less than 36 inches in height above grade and
are securely anchored to an adequately anchored foundation system
to resist flotation, collapse or lateral movement.
D. Within Zone AO, the floor shall be elevated above the highest adjacent grade at least as high as the depth number specified on the Flood Insurance Rate Map enumerated in §
175-6 (at least two feet if no depth number is specified).