The following standards apply to new development, including new and substantially improved structures, in the areas of special flood hazard shown on the community's FIRMs.
A. 
Subdivision proposals. The following standards apply to all new subdivision proposals and other proposed developments 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; and
(2) 
Public utilities and facilities such as sewer, gas, electrical and water systems shall be located and constructed 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 agrees to apply to FEMA for a conditional FIRM revision, FEMA approval is received, and the applicant provides all necessary data, analyses and mapping and reimburses the Town 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 for all costs related to the final map revision.
(2) 
On streams with a regulatory floodway, as shown on the community's FBFMs or FIRMs, no new construction, substantial improvements or other development in the floodway (including fill) shall be permitted unless:
(a) 
A technical evaluation by a professional engineer demonstrates through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that such an encroachment shall not result in any increase in flood levels during occurrence of the base flood; or
(b) 
The Town agrees to apply to 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 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 for all costs related to the final map revisions.
(3) 
In Zones A1-A30, AE and AH, and also Zone A if base flood elevation data are available, if any development is found to increase or decrease base flood elevations, the Town shall as soon as practicable, but not later than six months after the date such information becomes available, notify FEMA and the NYSDEC of the changes by submitting technical or scientific data in accordance with standard engineering practice.
C. 
Uniform code. The flood-resistant construction requirements prescribed by the Uniform Code.
The following standards apply to new development, including new and substantially improved structures, in the areas of special flood hazard shown on the community's FIRMs:
A. 
Anchoring. New structures and substantial improvement to structures in areas of special flood hazard shall be anchored to prevent flotation, collapse, or lateral movement during the base flood. This requirement is in addition to applicable anchoring requirements prescribed by the Uniform Code.
B. 
Construction materials and methods.
(1) 
New construction and substantial improvements to structures shall be constructed with materials and utility equipment resistant to flood damage.
(2) 
New construction and substantial improvements to structures shall be constructed using methods and practices that minimize flood damage.
(3) 
For enclosed areas below the lowest floor of a structure within Zones A1-A30, AE, AO or A, new and substantially improved structures shall have fully enclosed areas below the lowest floor that are useable solely for parking of vehicles, building access or storage in an area other than a basement and which are subject to flooding, designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must either be certified by a Registered Design Professional or meet or exceed the following minimum criteria:
(a) 
A minimum of two openings of each enclosed area having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding; and
(b) 
The bottom of all such openings no higher than one foot above the lowest adjacent finished grade; and
(c) 
Openings are not less than three inches in any direction.
(4) 
Openings may be equipped with louvers, valves, screens or other coverings or devices provided they permit the automatic entry and exit of floodwater. Enclosed areas sub-grade on all sides are considered basements and are not permitted.
C. 
Utilities.
(1) 
New and replacement electrical equipment, heating, ventilating, air conditioning, plumbing connections, and other service equipment shall be installed at least to the base flood elevation plus two feet of freeboard, at least three feet above the highest adjacent grade in a Zone A without an available base flood elevation where permitted, or be designed to prevent water from entering and accumulating within the components during a flood and to resist hydrostatic and hydrodynamic loads and stresses. Electrical wiring and outlets, switches, junction boxes and panels shall be elevated or designed to prevent water from entering and accumulating within the components unless they conform to the appropriate provisions of the electrical requirements prescribed by the Uniform Code for location of such items in wet locations.
(2) 
New and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system.
(3) 
New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of floodwaters. Sanitary sewer and storm drainage systems for buildings that have openings below the base flood elevation shall be provided with automatic backflow valves or other automatic backflow devices that are installed in each discharge line passing through a building's exterior wall.
(4) 
Onsite waste disposal systems shall be located to avoid impairment or contamination from them during flooding.
D. 
Storage tanks.
(1) 
Underground tanks shall be anchored to prevent flotation, collapse and lateral movement during conditions of the base flood.
(2) 
Aboveground tanks shall be:
(a) 
Anchored to prevent floatation, collapse or lateral movement during conditions of the base flood; or
(b) 
Installed at or above the base flood elevation plus two feet of freeboard.
A. 
Elevation. The following standards apply to new and substantially improved residential structures located in areas of special flood hazard, in addition to the "general standards" and "standards for all structures" prescribed in this chapter:
(1) 
Within special flood hazard areas, new construction and substantial improvements shall have the lowest floor (including basement) elevated to or above base flood elevation plus two feet of freeboard.
(2) 
Within Zone A, if the base flood elevation is not specified, this elevation shall be determined by either of the following:
(a) 
Obtain and reasonably use data available from a federal, state or other approved source plus two feet of freeboard; or
(b) 
Determine the base flood elevation in accordance with accepted hydrologic and hydraulic engineering practices, plus freeboard. Determinations shall be undertaken by a Professional Engineer who shall be documented that the technical methods used reflect currently accepted engineering practice. Studies, analyses, and computations shall be submitted in sufficient detail to allow thorough review and approval.
(3) 
Within Zone AO, new construction and substantial improvements 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 FIRM in § 204-11 of this chapter plus two feet of freeboard, or not less than three feet if a depth number is not specified.
(4) 
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 non-residential structures located in areas of special flood hazard, in addition to the "general standards" and "standards for all structures" prescribed in this chapter:
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 non-residential structure shall either:
(1) 
Have the lowest floor, including basement or cellar, elevated to or above the base flood elevation plus two feet of freeboard; or
(2) 
Be floodproofed so that the structure is watertight at and below base flood elevation plus two feet of freeboard, including attendant utility and sanitary facilities, with walls substantially impermeable to the passage of water. All structural components located below the base flood elevation must be capable of resisting hydrostatic and hydrodynamic loads and the effects of buoyancy.
B. 
Within Zone AO, new construction and substantial improvements of non-residential 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 plus two feet of freeboard, or not less than three feet if a depth number is not specified; or
(2) 
Be floodproofed so that the structure is watertight at and below the depth number specified in feet on the community's FIRM plus two feet of freeboard, including attendant utility and sanitary facilities, with walls substantially impermeable to the passage of water. All structural components located below this elevation must be capable of resisting hydrostatic and hydrodynamic loads and the effects of buoyancy.
C. 
If the structure is to be floodproofed, a Registered Design Professional shall develop and/or review structural design, specifications, and plans for construction. A FEMA Floodproofing Certificate or other approved 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 complying with the floodproofing standards prescribed in this section, 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.
The following standards apply to manufactured homes and recreational vehicles located in areas of special flood hazard, in addition to the "general standards" and "standards for all structures" prescribed in this chapter:
A. 
Recreational vehicles placed on sites within Zones A1-A30, AE and AH shall either:
(1) 
Be on site fewer than 180 consecutive days; or
(2) 
Be fully licensed and ready for highway use. For clarification purposes, 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; or
(3) 
Conform to the requirements for manufactured homes prescribed in this section.
B. 
A manufactured home that is located within areas of special flood hazard shall comply with FEMA P-85 that is entitled "Protecting Manufactured Homes from Floods and Other Hazards - A Multi-Hazard Foundation and Installation Guide," as currently in effect and as amended from time to time.
C. 
A manufactured home that is placed or substantially improved in Zones A1-A30, AE, AH and Zone A shall be elevated on a permanent foundation such that the bottom of the frame of the manufactured home chassis is elevated to or above the base flood elevation plus two feet of freeboard and is securely anchored to a foundation system to resist flotation, collapse and lateral movement, which shall be designed and certified by a Registered Design Professional.
D. 
Within Zone AO, the bottom of the frame of the manufactured home chassis shall be elevated above the highest adjacent grade at least as high as the depth number specified on the community's FIRM plus two feet of freeboard, or not less than three feet if a depth number is not specified.
E. 
A manufactured home that is placed or substantially improved in identified floodways shall be designed and certified by a Registered Design Professional to be compliant with the standards in this chapter.
The following standards apply to new and substantially improved accessory structures, including detached garages, in the areas of special flood hazard shown on the community's FIRMs:
A. 
The accessory structure must meet the definition of structure, for floodplain management purposes, provided in 44 CFR § 59.1, where walled and roofed shall be interpreted as having two outside rigid walls and a fully secured roof.
B. 
The accessory structure should be small, as defined by the community and approved by FEMA, and represent a minimal investment. Accessory structures of any size may be considered for a variance; however, FEMA and the Town consider accessory structures that meet the following criteria to be small and therefore not necessarily in need of a variance:
(1) 
Located in an A Zone (A, AE, A1-A30, AR, A99) and less than or equal to the size of a one-story, two-car garage.
C. 
Accessory structures must conform to the "general standards" and "standards for all structures" prescribed in this chapter.
D. 
The portions of the accessory structure located below the base flood elevation plus two feet of freeboard must be constructed with flood-resistant materials.
E. 
Mechanical and utility equipment for the accessory structure must be elevated or dry floodproofed to or above the base flood elevation plus two feet of freeboard.
F. 
Within Zone AO and Zone A, if base flood elevation data are not available, areas below three feet above the highest adjacent grade shall be constructed using methods and practices that minimize flood damage.
G. 
The accessory structure must comply with the floodway encroachment provisions of the NFIP.
H. 
The accessory structure must be wet floodproofed to protect the structure from hydrostatic pressure. The design must meet the NFIP design and performance standards for openings per 44 CFR § 60.3(c)(5) and must allow for the automatic entry and exit of floodwater without manual operation or the presence of a person (or persons).