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 §
127-6:
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 Village of Briarcliff Manor 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 Village of Briarcliff Manor for all fees and
other costs in relation to the application. The applicant must also provide
all data, analyses and mapping and reimburse the Village of Briarcliff Manor
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 §
127-6, 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 the occurrence of the base flood; or
(b) The Village of Briarcliff Manor 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 Village of Briarcliff Manor
for all fees and other costs in relation to the application. The applicant
must also provide all data, analyses and mapping and reimburse the Village
of Briarcliff Manor for all costs related to the final map revisions.
(3) Whenever any portion of a floodplain is authorized for development,
the volume of space occupied by the authorized fill or structure below the
base flood elevation shall be compensated for and balanced by an hydraulically
equivalent volume of excavation taken from below the base flood elevation
at or adjacent to the development site. All such excavations shall be constructed
to drain freely to the watercourse. No area below the water line of a pond
or other body of water can be credited as a compensating excavation.
The following standards, in addition to the standards in §
127-14A and §
127-14B and §
127-15, apply to structures located in areas of special flood hazard as indicated:
A. Within Zones A1-A30, AE and AH and also Zone A if base
flood elevation data is available, new construction and substantial improvements
shall have the lowest floor (including basement) elevated to or above two
feet above the base flood level.
B. Within Zone A, when no base flood elevation data is available,
new and substantially improved structures shall have the lowest floor (including
basement) elevated at least three feet above the highest adjacent grade.
C. Within Zone AO, new and substantially improved structures shall have the lowest floor (including basement) elevated above the highest adjacent grade at least as high as two feet above the depth number specified in feet on the community's Flood Insurance Rate Map enumerated in §
127-6 (at least two feet if no depth number is specified).
D. Within Zones AH and AO, adequate drainage paths are required
to guide floodwaters around and away from proposed structures on slopes.
The following standards apply to new and substantially improved commercial, industrial and other nonresidential structures, in addition to the requirements in §
127-14A and §
127-14B and §
127-15:
A. Within Zones A1-A30, AE and AH and also Zone A, if base
flood elevation data is available, new construction and substantial improvements
of any nonresidential structure, together with attendant utility and sanitary
facilities, shall either:
(1) Have the lowest floor, including basement or cellar,
elevated to or above two feet above the base flood elevation; or
(2) Be floodproofed so that the structure is watertight below
two feet above the base flood level with walls substantially impermeable to
the passage of water. All structural components located below the base flood
level must be capable of resisting hydrostatic and hydrodynamic loads and
the effects of buoyancy.
B. Within Zone AO, new construction and substantial improvements
of nonresidential structures shall:
(1) Have the lowest floor (including basement) elevated above
the highest adjacent grade at least as high as two feet above the depth number
specified in feet on the community's FIRM (at least two feet if no depth
number is specified); or
(2) Together with attendant utility and sanitary facilities, be completely floodproofed to that level to meet the floodproofing standard specified in Subsection
A(2).
C. If the structure is to be floodproofed, a licensed professional engineer or architect shall develop and/or review structural design, specifications and plans for construction. A floodproofing certificate or other certification shall be provided to the local administrator that certifies that the design and methods of construction are in accordance with accepted standards of practice for meeting the provisions of Subsection
A(2), including the specific elevation (in relation to mean sea level) to which the structure is to be floodproofed.
D. Within Zones AH and AO, adequate drainage paths are required
to guide floodwaters around and away from proposed structures on slopes.
E. Within Zone A, when no base flood elevation data is available,
the lowest floor (including basement) shall be elevated at least three feet
above the highest adjacent grade.
The following standards, in addition to the standards in §
127-14 and §
127-15, 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.
(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 is 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 §
127-6 (at least two feet if no depth number is specified).