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 §
284-6.
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 homes 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; and
(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 Maine 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 Maine 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 Maine 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 §
284-6, no new construction, substantial improvements or other development (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 Maine 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 Maine 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 Maine for all costs related
to the final revisions.
Elevation. The following standards, in addition to the standards in §
284-14A and
B and §
284-15, 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 are available, new construction and substantial improvements
shall have the lowest floor (including basement) elevated to or above the
base flood level.
B. Within Zone A, when no base flood elevation data are
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 the depth number specified in feet on the community's Flood Insurance Rate Map enumerated in §
284-6 (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 §
284-14A and
B and §
284-15.
A. Within Zones A1-A30, AE and AH, and also Zone A if base
flood elevation data are 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 the base flood elevation; or
(2) Be floodproofed so that the structure is watertight below
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 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 required to meet the floodproofing standard specified in §
284-17A(1).
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 the design and methods of construction are in accordance with accepted standards of practice for meeting the provisions of §
284-17A(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 are
available, the lowest floor (including basement) shall be elevated at least
three feet above the highest adjacent grade.