It is the purpose of this article to establish standards and
controls for the retrofitting of existing storm drain inlets which
are in direct contact with repaving, repairing, construction, or resurfacing,
or alterations of facilities on private property, to prevent the discharge
of solids and floatables (such as plastic bottles, cans, food wrappers
and other litter) to the municipal separate storm sewer system operated
by the Township of Little Falls so as to protect the public health,
safety and welfare, and to prescribe penalties for the failure to
comply.
No person in control of private property (except a residential
lot with one single-family house) shall authorize the repaving, repairing
(excluding the repair of individual potholes), resurfacing (including
top coating or chip sealing with asphalt emulsion or a thin base of
hot bitumen), reconstructing or altering any surface that is in direct
contact with an existing storm drain inlet on that property unless
the storm drain inlet either:
A. Already meets the design standard below to control passage of solid
and floatable materials; or
B. Is retrofitted or replaced to meet the standard in §
216-15 below prior to the completion of the project.
Storm drain inlets identified in §
216-14 above shall comply with the following standard to control passage of solid and floatable materials through storm drain inlets. For purposes of this section, "solid and floatable materials" means sediment, debris, trash, and other floating, suspended, or settleable solids. For exemptions to this standard, see Subsection C below.
A. Grates.
(1) Design engineers shall use either of the following grates whenever
they use a grate in pavement or another ground surface to collect
stormwater from that surface into a storm drain or surface water body
under that grate:
(a)
The New Jersey Department of Transportation (NJDOT) bicycle-safe
grate, which is described in Chapter 2.4 of the NJDOT Bicycle Compatible
Roadways and Bikeways Planning and Design Guidelines (April 1996);
or
(b)
A different grate, if each individual clear space in that grate
has an area of no more than seven square inches, or is no greater
than 0.5 inch across the smallest dimension.
(2) Examples of grates subject to this standard include grates in grate
inlets, the grate portion (noncurb-opening portion) of combination
inlets, grates on storm sewer manholes, ditch grates, trench grates,
and grates of spacer bars in slotted drains. Examples of ground surfaces
include surfaces of roads (including bridges), driveways, parking
areas, bikeways, plazas, sidewalks, lawns, fields, open channels,
and stormwater basin floors. The type of grate shall be as approved
by the Township of Little Falls Department of Public Works.
B. Whenever design engineers use a curb-opening inlet, the clear space
in that curb opening (or each individual clear space, if the curb
opening has two or more clear spaces) shall have an area of no more
than seven square inches, or be no greater than two inches across
the smallest dimension. The design of curb-opening inlets shall be
campball type "N-Eco" or Township of Little Falls Department of Public
Works approved equal.
C. This standard does not apply:
(1) Where the Municipal Engineer agrees that this standard would cause
inadequate hydraulic performance that could not practicably be overcome
by using additional or larger storm drain inlets that meet these standards;
(2) Where flows are conveyed through any device (e.g., end of pipe netting
facility, manufactured treatment device, or a catch basin hood) that
is designed, at a minimum, to prevent delivery of all solid and floatable
materials that could not pass through one of the following:
(a)
A rectangular space 4 5/8 inches long and 1 1/2 inches
wide (This option does not apply for outfall netting facilities.);
or
(b)
A bar screen having a bar spacing of 0.5 inch;
(3) Where
flows are conveyed through a trash rack that has parallel bars with
one-inch spacing between the bars; or
(4) Where
the New Jersey Department of Environmental Protection determines,
pursuant to the New Jersey Register of Historic Places Rules at N.J.A.C.
7:4-7.2, that action to meet this standard is an undertaking that
constitutes an encroachment or will damage or destroy the New Jersey
Register-listed historic property.
This article shall be enforced by the Department of Public Works
and the Construction Code Official for the Township of Little Falls.
Any person(s) who is found to be in violation of the provisions
of this article shall be subject to a fine not to exceed $1,000 for
each storm drain inlet that is not retrofitted to meet the design
standard.