A. 
The proposed land uses shown on a plat, whether they are for residential, business, industrial or any other land use, shall conform to the Comprehensive Plan and the planning objectives on which it is based, as well as to the requirements of the Zoning Code.[1]
[1]
Editor's Note: See Ch. 245, Zoning.
B. 
Park requirements in residential plats.
(1) 
Each residential plat shall have a park site consisting of not less than five acres for each 100 dwelling units indicated on the plat, suitably located for playground or other recreation and open space purposes, including passive recreational uses, provided that the Planning Board makes a finding that a proper case exists for requiring such park site.
(2) 
The Planning Board may require the subdivider to grade such park site in a manner appropriate for its projected use and compatible with its surroundings.
(3) 
Where such park site incorporates a unique natural feature or a landmark, the subdivider shall be responsible for the protection of such feature or landmark from any destructive action during the course of the plat development.
(4) 
In cases where the Planning Board makes a finding pursuant to Subsection B(1) above that the proposed subdivision plat presents a proper case for requiring a park, but the Planning Board determines that a suitable park site of adequate size cannot be properly located within the plat, in whole or in part, the subdivider shall be required to pay a park fee equal in amount to the fair market value at the time of the subdivision procedure of the land area that would otherwise be required for a park site. All such payments shall be held by the Village in a special Park and Recreation Site Acquisition and Improvement Trust Fund to be used exclusively either for the acquisition of sites that are properly located for neighborhood park, playground or recreation purposes or for the physical improvement of such sites.
(5) 
Determination of park fee.[2]
(a) 
In determining the amount of the park fee required under Subsection B(4) above, the Planning Board shall multiply the fair market value per acre by the number of lots by the five-percent park requirement.
(b) 
In determining the fair market value, the Planning Board shall obtain an appraisal of the raw land value of the subject parcel at the time of application for final plat approval. Said appraisal shall be prepared by an independent land appraiser licensed by the State of New York. The cost of said appraisal shall be assessed to the subdivider, with the fee being paid prior to final approval of the plat. The subdivider shall be given an opportunity to review the appraisal and must provide the Planning Board with written acceptance of the same. If the subdivider rejects the first appraisal, the Planning Board shall obtain a second appraisal, also at the cost of the subdivider, which, if accepted by the subdivider, shall be averaged with the first appraisal. If the subdivider rejects the second appraisal, the subdivider must obtain the third appraisal, which shall be averaged with the first two appraisals.
[2]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I).
(6) 
No park fee will be required for conservation opportunity subdivisions or planned residential subdivisions as described in this chapter.
C. 
The arrangement of streets, building lots and other land uses shall be of such character that they can be used safely without danger to health or peril from fire, flood, unstable soil conditions or other menace.
D. 
Subdivision designs shall indicate consideration for suitable separation and protection of different types of land uses, including highways.
A. 
Streets, highways and common access shall be of sufficient width and suitable grade and shall be suitably located to accommodate the prospective traffic, to facilitate fire protection and to comprise a convenient system. Streets, highways and common access shall be properly related to the Comprehensive Plan.
B. 
Local streets, lanes and common access shall be laid out so that their use for through traffic will be discouraged. Particular attention should be given to eliminating possible bypasses around traffic signals and major intersections unless such systems are specifically designed to promote safety at a given location by unifying internal access efficiencies between two or more parcels and land uses.
C. 
Collector streets shall be provided to give easy access to and between local streets. In general, each A-type local street shall have at least one intersection with a collector street.
D. 
Cul-de-sac.
(1) 
The use of cul-de-sac streets in a subdivision layout shall be minimized unless they are found to be well-conceived elements of a planned residential development plan.
(2) 
The minimum radius for the right-of-way at the turnaround shall be 60 feet, and the curb radius shall be 48 feet and the pavement shall be extended to the curb. The Planning Board may require the central area of the cul-de-sac to be planted or to retain natural plant material when it is found to be acceptable by the Board.
E. 
Intersections.
(1) 
No more than two streets shall intersect or meet at any one point.
(2) 
Streets shall intersect one another at an angle of 90°, where practicable.
(3) 
Intersections along collector or local streets shall be spaced at least 150 feet apart, measured from the points of intersection of the center lines.
(4) 
Intersections along a highway and certain collector streets so designated by the Planning Board shall be spaced at least 800 feet apart, measured from the points of intersection of the center lines, where practicable.
(5) 
Adequate sight distance shall be required at all intersections.
F. 
Horizontal alignment.
(1) 
The recommended minimum center-line radius for a street curve shall be 200 feet on a local street and 400 feet on a collector street.
(2) 
A tangent distance of at least 50 feet shall be provided between reverse curves.
(3) 
The minimum radius at a corner shall be 25 feet at the property line, except that a larger radius shall be provided at major intersections.
G. 
Vertical alignment.
(1) 
All street gradients shall conform as much as possible to the natural terrain, minimizing excessive cuts and fills.
(2) 
Minimum road gradients shall be 0.50%.
(3) 
Maximum road gradients shall be 6%.
(4) 
Gradients approaching intersections shall not exceed 2.50%, commencing at a point at least 50 feet from the nearest intersecting right-of-way line measured along the center line of the road. Intersections of roads and curbs having minimum gradients shall be detailed sufficiently to ensure proper surface drainage.
(5) 
Gutter line gradients of culs-de-sac shall be a minimum of 0.50%.
(6) 
The formula L = KA shall be used in the design of street profiles where L, the length in feet of a vertical curve, shall be related to the algebraic difference (A) in percent of grade and a constant (K) equaling 28 for minor streets and lanes and 50 for collector streets. This formula shall be used for both sag and crest vertical curves.
(7) 
Where there are changes in grade of 1.0% or more, they shall be connected by a vertical curve.
All stormwaters shall be recharged into the subsurface groundwater reservoir, and no system will be allowed which directly discharges such waters into any surface water area or into a fresh or salt marsh or off site.
A. 
All building lots shall at least comply with the requirements of the Zoning Code.[1]
[1]
Editor's Note: See Ch. 245, Zoning.
B. 
Where a subdivision abuts a highway or in the case of certain collector streets designated by the Planning Board, the streets and lots shall be laid out so that there is no direct access from the lots to such highway or collector street. The lots shall either back on such highway or collector street, front on an interior street or front on a marginal road.
(1) 
In the case of reversed lots, a limited-access easement across the rear of the lot shall prohibit ingress to or egress from the lot to the highway or collector street, and the subdivider shall provide fencing and/or screen plantings as required by the Planning Board where acceptable natural woodland cover does not exist.
(2) 
In the case of a marginal road, the subdivider shall construct said road.
C. 
Block dimensions.
(1) 
The maximum length shall be 1,600 feet. The minimum length shall be 400 feet.
(2) 
The width shall relate to the zoning district requirements and shall provide for two tiers of lots, if practicable.
(3) 
In the case of planned residential development, the aforementioned dimensions may be varied at the discretion of the Planning Board.
D. 
Special attention shall be given to corner lots to ensure sufficient size for front yards on each street, one rear yard and one side yard and leaving adequate building area for an average house.
E. 
Flag lots. The Planning Board may permit a limited number of flag lots in a residential subdivision plat, provided that they are well shaped, they are generally larger than the usual lots, their accessway is essentially straight and not excessive in length and their arrangement will not create traffic difficulties on the street system and would not be a means to circumvent a standard lot and street arrangement which might otherwise result in a generally better platting of the subdivision and adjacent lands.
(1) 
A flag lot shall contain at least 1 1/2 times the lot area of the applicable zoning district in which it is situated, within the bulk of the lot, exclusive of the area contained in the flagpole access strip.
[Amended 1-19-2016 by L.L. No. 1-2016]
(2) 
In allowing flag lot arrangements in subdivisions, the Planning Board may require either a formal private lane or common access driveway to service such lots and may require that such lanes or common access driveways be made part of the improvements to be undertaken and made part of a performance bond.
(3) 
The Planning Board may adopt further policies or regulations to assure compliance with these requirements, including design and legal specifications for the creation of lanes and common access driveways over such flag lot arrangements.
A. 
Subdivision design shall preserve and protect, insofar as possible, natural terrain features such as tidal and freshwater wetlands, beaches, dune lands, steep slopes, bluffs, prime agricultural soils, unique vegetation and animal habitat, floodplains, watercourses, primary sources of groundwater and natural drainage patterns.
B. 
All surface waters and wetlands are deemed to be important for the physical and mental well-being of its residents and resort visitors and for the perpetuation of desirable animal and plant species and therefore shall be protected from siltation caused by construction or regrading of perimeter properties, from the influence of induced nitrification caused by fertilization of such perimeter properties and from any other form of probable degradation which might be caused by adjacent land development and use. For the purpose of such protection, the Planning Board may require, as part of its approval of subdivision maps, the dedication of perimeter parkland or easements or covenants to accomplish such protection. Parkland buffer areas or easements shall be dedicated essentially in a natural condition, leaving the movement of silts and fertilizers. For this purpose, 100 feet shall be the minimum width considered for such natural area buffers as measured from the upland edge of the wetland boundary.
(1) 
To the maximum extent practicable, existing wetlands shall be preserved in their natural state within reserved areas in the proposed subdivision.
(2) 
To minimize adverse impacts to wetlands, the Planning Board shall require a specific buffer zone from the wetlands. Such buffer zone shall be delineated by declaration or other proper legal instrument filed in connection with the subdivision.
(3) 
The Planning Board may attach conditions of approval relating to wetlands preservation, use and management to the resolution of final conditional approval. Such conditions may include, but are not limited to:
(a) 
Limitations on building envelope and location.
(b) 
Requirements that structures be elevated on piles to minimize adverse impacts to wetlands and to protect structures from natural hazards.
(c) 
Imposition of deed restrictions concerning future use and subdivision of lands, such as preservation of undeveloped areas in open space, and limitation on land disturbance, vegetation removal, and fertilization.
(d) 
Dedication of easements or placement of covenants to protect wetlands.
(e) 
Imposition of buffer zones separating and protecting the wetland from future activities.
(f) 
Establishing setbacks for structures and restrictions on fill or other activities.
(g) 
Creation, restoration or enhancement of an area of wetlands and/or wetland buffers.
(4) 
Subdivision lots containing wetlands and/or lying within 200 feet of the boundaries of wetlands shall, where practicable, have sufficient lot depth so that no building envelope will be placed closer to the wetlands than 100 feet landward of the wetland boundary. The Planning Board shall also, where practicable, impose a minimum buffer zone of 100 feet for turf, fertilizers, pesticides, herbicides, fungicides or similar treatments, landscaping or other clearing or disturbance of natural vegetation, 125 feet for structures and 150 feet for wastewater disposal and/or sanitary systems.
C. 
The natural vegetation and soils of a subdivision site shall not be disturbed prior to final plat approval by the Planning Board except for such minimal disturbance as will be needed and approved by said Board relative to survey boundary work, excavation of approved test holes and other acceptable minor site preparation needed for engineering and planning evaluation.
D. 
The Planning Board may require such erosion and sedimentation control methods as are needed to protect terrain features, including such methods which are noted in the Erosion and Sediment Control Technical Handbook prepared by Suffolk County Soil and Water Conservation District.
E. 
Subdivision lots having frontage along coastal bluffs shall have sufficient lot depth so that no dwelling will be placed closer to the top edge of the coastal bluff than 100 feet.
Local electric power, telephone and cable television lines shall be placed underground. Utility companies shall place special emphasis on preserving the vitality and appearance of trees. All utilities to flag lots shall be placed underground.
A. 
In cases where bulkheading is deemed necessary by the Planning Board and the Village Engineer and to protect the coastal areas from erosion caused by storm and tidal action, it shall be placed in such fashion as not to destroy or alter significant ecological values of the natural marine edge which are considered to extend up to and above the mean high-water level and to include all tidal wetlands.
B. 
Man-made waterways, such as canals, marinas and similar constructions, which break the fresh groundwater - saline water interface shall not be permitted.
A. 
Street trees shall be provided in all subdivisions unless adequate trees, acceptable to the Board and which exist in their proper locations, are left in place and are in a healthy condition. An exception to this requirement may be considered by the Board where native woodlands and understory plants are deemed a desirable component of the localized landscape worthy of natural resources protection, and where the introduction of formal street trees forms an alien intrusion into such landscapes.
B. 
Trees shall be of nursery stock of an approved species grown under the same climatic conditions as at the location of the development. They shall be of symmetrical growth, free of insect pests and disease, suitable for street use and durable under the maintenance contemplated.
C. 
The average trunk diameter at a height of six feet above the finished ground level shall be a minimum of two to three inches, depending on good practice, with reference to the particular species to be planted.
D. 
Trees shall be planted at intervals of from 40 feet to 60 feet apart, depending on the species and location of lot lines, along both sides of the street and shall be located within the right-of-way where their spacing from the property line shall be determined by the Planning Board.
E. 
Where unique natural landscapes exist, the street right-of-way shall not be cleared across the entire distance between property lines. In order to enhance natural edge settings allowing them to benefit the rural scene of the roadway, the Board may require a limit of clearing line.
Trails shall be improved in the locations shown on the final plat and shall be constructed as follows:
A. 
Clearing shall be four feet wide, with two feet on both sides, pruned to sufficiently provide for stepping aside. Overhead tree limbs shall be pruned to a height of 12 feet to provide for vertical clearance. Pruning will be done in accordance with acceptable landscaping practice. If possible, the trail shall be buffered by a scenic or conservation easement of such width as is deemed acceptable to the Planning Board. The Planning Board shall attempt to maximize the width of such buffer when possible.
B. 
Blazes or markers shall be placed equally along the trail.
C. 
Trail warning signs consistent with the New York State standard signs should be posted at all road crossings. Directional trail markings should be posted along the trail every 100 yards and at additional points where the trail makes a significant turn. Directional trail markings shall be consistent throughout the Village.
D. 
Trails shall be constructed at a natural grade and assume an alignment over grade slopes of less than 10% where possible.
E. 
The Planning Board may consider modifications to conditions required above or require additional conditions.
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I).