Where not adequately controlled by zoning regulations, building
setback lines appropriate to the location and type of development
contemplated shall be recommended by the Plan Commission.
[Added by Ord. No. 2004-04-02]
A. Minor drainage system facilities must be designed to prevent stormwater
from encroaching on any traffic lane of a collector street, arterial
street, or the center 24 feet of any local street. Notwithstanding
the foregoing, water may inundate to the limits of any drainageway,
cul-de-sac, or permanently dead-end streets serving fewer than 10
dwelling units.
B. Major drainage system facilities shall be capable of preventing stormwater
accumulation from inundating any buildings at the ground line, unless
such buildings are floodproofed or otherwise designed to prevent inconvenience
or damage from infrequent storm events. On arterial streets and in
commercially zoned districts, the major drainage system facilities
shall be designed to prevent the depth of water at the crown of the
street from exceeding six inches to permit the operation of emergency
vehicles.
C. Multifamily residential, commercial and industrial developments shall
discharge stormwater to the drainage system at a rate of discharge
no greater than the pre-development ten-year storm event.
D. Subdivisions and certified survey maps shall be graded to provide
drainageways between lots, blocks and adjacent properties. All grading
must ensure that all stormwater drainage discharges from the site
to the public right-of-way or dedicated drainageways, including storm
sewers. Drainageways shall be located, to the extent possible, along
property lines and may be encumbered by easements dedicated to the
public.
E. All grades adjacent to the public right-of-way shall be graded consistent
with the grades established by the Village Engineer.
F. Concentrated stormwater drainage shall not be allowed to discharge
across sidewalks, bike paths or driveway aprons if that flow originates
from:
(1) Any lot zoned commercial, industrial, or institutional; or
(2) An area contributing stormwater runoff from eight or more residential
units.
G. All building floors and basement openings shall be a minimum of two
feet above the regional and/or local flood elevation or be floodproofed.
H. The master site grading and drainage plan shall accommodate stormwater
drainage through the site as well as from the site.