Sidewalks, when required, shall be a minimum
width of four feet. Wider walks may be required by the Planning Board
in areas of anticipated heavy use.
[Amended 12-19-2007 by L.L. No. 6-2007]
A. All storm drainage designs shall be prepared by an
engineer licensed in New York State and shall conform to all applicable
laws and regulations of the State of New York.
B. For any subdivision subject to regulation under Article
XII of Chapter
200, Zoning, all erosion and sediment controls, stormwater management facilities, and drainage improvements shall comply with the performance and design criteria set forth therein.
C. For any subdivision not subject to regulation under Article
XII of Chapter
200, Zoning, the following requirements shall apply:
(1) Stormwater drainage design methodologies shall be
based on the Erie and Niagara County Stormwater Design Manual, the
NYSDEC Design Standards or methodologies approved by the Town Engineer
and be described in an engineering report submitted with the plans.
(2) Erosion and sediment control shall be based on the
New York State Manual.
(3) Stormwater systems shall be designed for a twenty-five-year
storm (except for more restrictive requirements from other permitting
agencies, i.e., County Highway or State Department of Transportation)
with no increase in runoff over the existing flow from the site. Existing
downstream drainage problems must also be taken into consideration.
(4) All stormwater piping shall be 12 inches in diameter
or larger (smaller sizes when necessary may be approved by the Town
Engineer) and be at a minimum grade to provide a stormwater flow velocity
in the pipe of two feet per second or greater. (Velocities greater
than eight feet per second will require conduit outlet protection.)
(5) Stormwater catch basins shall be located a maximum
of 400 feet apart and at all low points.
(6) If subsurface drainage is deemed necessary by the
Planning Board, the subdivider shall provide for the same in a manner
acceptable to the Town Engineer.
(7) Drainpipes under streets or driveways shall be designed
to withstand New York State highway loadings and be located a minimum
of one foot below the subbase of the road (to top of pipe).