[Amended 10-3-2023 by Ord. No. 23-2612]
A. Policy statement. Flood control, groundwater recharge, and pollutant
reduction shall be achieved through the use of stormwater management
measures, including green infrastructure best management practices
(GI BMPs) and nonstructural stormwater management strategies. GI BMPs
and low-impact development (LID) should be utilized to meet the goal
of maintaining natural hydrology to reduce stormwater runoff volume,
reduce erosion, encourage infiltration and groundwater recharge, and
reduce pollution. GI BMPs and LID should be developed based upon physical
site conditions and the origin, nature and the anticipated quantity,
or amount, of potential pollutants. Multiple stormwater management
BMPs may be necessary to achieve the established performance standards
for water quality, quantity, and groundwater recharge.
B. Purpose. The purpose of this chapter is to establish minimum stormwater management requirements and controls for major development and all applications for new construction or enlargement or addition to an existing structure not defined in as defined below in §
268-2.
C. Applicability. This chapter shall be applicable to all applications where improved lot coverage exceeds the maximum allowable requirements from Ch.
186, Land Development, Schedule B - Limiting; any improvement that exceeds that maximum improved lot coverage shall require a drainage plan with zero runoff which is reviewed and approved by the Board Engineer.
D. Provisions.
(1) All applications for a building permit for properties to which this
chapter applies shall contain a plan or certification providing for
a zero increase in stormwater runoff for the completed project.
(2) The Board Engineer shall review each application for a building permit
for properties to which this chapter applies and approve same as providing
for a zero increase in stormwater runoff for the completed project.
(3) No building permit shall be issued for any project to which this
chapter applies when, in the opinion of the Board Engineer, the applicant
fails to provide for a zero increase in stormwater runoff.
(4) At the time of the application for a building permit for any project
to which this chapter applies, the applicant shall deposit $1,500
in escrow to cover or defray the cost of the Board Engineer's
review and inspection of the application relative to stormwater runoff
and/or the other site-work-related items.
E. Design guidelines. An application for a building permit for any project
to which this chapter applies shall include an underground seepage
pit or similar system designed to adequately handle stormwater runoff
generated on impervious areas discharged into the system. The following
are minimum requirements for the seepage pit or similar system design:
(1) The seepage pit shall be designed by a NJ professional engineer and
inspected by the Board Engineer to retain at least ten-year, sixty-minute
duration storm runoff generated on the additional impervious area.
(2) If the area larger than the additional impervious surface is discharged
into the seepage pit, the seepage pit shall be designed to retain
the runoff generated on the total area connected to the seepage pit.
(3) The seepage pit bottom shall be, at a minimum, two feet above seasonal
high-water table.
(4) The soil shall be sufficiently permeable to drain the pit within
a seventy-two-hour period.
(5) The seepage pit should be inspected every 10 years and cleaned as
necessary.
(6) All sump pumps, roofing and exterior drainage systems shall drain
into the seepage pit and shall not drain into the street.
(7) The applicant's engineer shall provide a permeability rate from
soil sampling.
(8) Should it be found that a seepage pit is not a viable solution to
prevent an increase in stormwater runoff, the applicant's engineer
shall propose an alternative solution for review and approval by the
Board Engineer.
For the purpose of this chapter, the following terms, phrases,
words and their derivations shall have the meanings stated herein
unless their use in the text of this chapter clearly demonstrates
a different meaning. When not inconsistent with the context, words
used in the present tense include the future, words used in the plural
number include the singular number, and words used in the singular
number include the plural number. The word "shall" is always mandatory
and not merely directory. The definitions below are the same as or
based on the corresponding definitions in the Stormwater Management
Rules at N.J.A.C. 7:8-1.2.
CAFRA CENTERS, CORES OR NODES
Those areas with boundaries incorporated by reference or
revised by the Department in accordance with N.J.A.C. 7:7-13.16.
CAFRA PLANNING MAP
The map used by the Department to identify the location of
Coastal Planning Areas, CAFRA centers, CAFRA cores, and CAFRA nodes.
The CAFRA Planning Map is available on the Department's Geographic
Information System (GIS).
COMMUNITY BASIN
An infiltration system, sand filter designed to infiltrate,
standard constructed wetland, or wet pond, established in accordance
with N.J.A.C. 7:8-4.2(c)14, that is designed and constructed in accordance
with the New Jersey Stormwater Best Management Practices Manual, or
an alternate design, approved in accordance with N.J.A.C. 7:8-5.2(g),
for an infiltration system, sand filter designed to infiltrate, standard
constructed wetland, or wet pond and that complies with the requirements
of this chapter.
CONTRIBUTORY DRAINAGE AREA
The area from which stormwater runoff drains to a stormwater
management measure, not including the area of the stormwater management
measure itself.
CORE
A pedestrian-oriented area of commercial and civic uses serving
the surrounding municipality, generally including housing and access
to public transportation.
COUNTY REVIEW AGENCY
An agency designated by the County Board of Commissioners
to review municipal stormwater management plans and implementing ordinance(s).
The county review agency may either be:
[Amended 5-17-2022 by Ord. No. 22-2601]
A.
A county planning agency; or
B.
A county water resource association created under N.J.S.A. 58:16A-55.5,
if the ordinance or resolution delegates authority to approve, conditionally
approve, or disapprove municipal stormwater management plans and implementing
ordinances.
DEPARTMENT
The Department of Environmental Protection.
DESIGN ENGINEER
A person professionally qualified and duly licensed in New
Jersey to perform engineering services that may include, but not necessarily
be limited to, development of project requirements, creation and development
of project design and preparation of drawings and specifications.
DESIGNATED CENTER
A State Development and Redevelopment Plan Center as designated
by the State Planning Commission such as urban, regional, town, village,
or hamlet.
DEVELOPMENT
The division of a parcel of land into two or more parcels,
the construction, reconstruction, conversion, structural alteration,
relocation or enlargement of any building or structure, any mining
excavation or landfill, and any use or change in the use of any building
or other structure, or land or extension of use of land, for which
permission is required under the Municipal Land Use Law, N.J.S.A.
40:55D-1 et seq. In the case of development of agricultural land,
"development" mean any activity that requires a state permit, any
activity reviewed by the County Agricultural Board (CAB) and the State
Agricultural Development Committee (SADC), and municipal review of
any activity not exempted by the Right to Farm Act, N.J.S.A. 4:1C-1
et seq.
DISTURBANCE
The placement or reconstruction of impervious surface or
motor vehicle surface, or exposure and/or movement of soil or bedrock
or clearing, cutting, or removing of vegetation. Milling and repaving
is not considered disturbance for the purposes of this definition.
DRAINAGE AREA
A geographic area within which stormwater, sediments, or
dissolved materials drain to a particular receiving water body or
to a particular point along a receiving water body.
EMPOWERMENT NEIGHBORHOODS
Neighborhoods designated by the Urban Coordinating Council
"in consultation and in conjunction with" the New Jersey Redevelopment
Authority pursuant to N.J.S.A. 55:19-69.
ENVIRONMENTALLY CONSTRAINED AREA
The following areas where the physical alteration of the
land is in some way restricted, either through regulation, easement,
deed restriction or ownership such as: wetlands, floodplains, threatened
and endangered species sites or designated habitats, and parks and
preserves. Habitats of endangered or threatened species are identified
using the Department's Landscape Project as approved by the Department's
Endangered and Nongame Species Program.
ENVIRONMENTALLY CRITICAL AREA
An area or feature which is of significant environmental
value, including but not limited to: stream corridors, natural heritage
priority sites, habitats of endangered or threatened species, large
areas of contiguous open space or upland forest, steep slopes, and
wellhead protection and groundwater recharge areas. Habitats of endangered
or threatened species are identified using the Department's Landscape
Project as approved by the Department's Endangered and Nongame Species
Program.
EROSION
The detachment and movement of soil or rock fragments by
water, wind, ice, or gravity.
GREEN INFRASTRUCTURE
A stormwater management measure that manages stormwater close
to its source by:
A.
Treating stormwater runoff through infiltration into subsoil;
B.
Treating stormwater runoff through filtration by vegetation
or soil; or
C.
Storing stormwater runoff for reuse.
HUC 14 or HYDROLOGIC UNIT CODE 14
An area within which water drains to a particular receiving
surface water body, also known as a subwatershed, which is identified
by a fourteen-digit hydrologic unit boundary designation, delineated
within New Jersey by the United States Geological Survey.
IMPERVIOUS SURFACE
A surface that has been covered with a layer of material
so that it is highly resistant to infiltration by water.
IMPROVED LOT COVERAGE
The percentage of the area covered by principal and accessory
buildings, structures and uses, including, but not limited to, decks,
driveways, patios, walkways, parking areas, garages, pools, and all
areas covered by any materials other than vegetation or soil.
[Added 10-3-2023 by Ord. No. 23-2612]
INFILTRATION
The process by which water seeps into the soil from precipitation.
LEAD PLANNING AGENCY
One or more public entities having stormwater management
planning authority designated by the regional stormwater management
planning committee pursuant to N.J.A.C. 7:8-3.2 that serves as the
primary representative of the committee.
MAJOR DEVELOPMENT
A.
An individual development, as well as multiple developments
that individually or collectively result in:
(1)
The disturbance of one or more acres of land since February
2, 2004;
(2)
The creation of one-quarter acre or more of regulated impervious
surface since February 2, 2004;
(3)
The creation of one-quarter acre or more of regulated motor
vehicle surface since March 2, 2021, or the effective date of this
chapter, whichever is earlier; or
(4)
A combination of Subsection
A(2) and
(3) above that totals an area of one-quarter acre or more. The same surface shall not be counted twice when determining if the combination area equals one-quarter acre or more.
B.
Major developments include all developments that are part of a common plan of development or sale (for example, phased residential development) that collectively or individually meet any one or more of Subsection
A(1),
(2),
(3) or
(4) above. Projects undertaken by any government agency that otherwise meet the definition of "major development" but which do not require approval under the Municipal Land Use Law, N.J.S.A. 40:55D-1 et seq., are also considered major development.
MOTOR VEHICLE
Land vehicles propelled other than by muscular power, such
as automobiles, motorcycles, autocycles, and low-speed vehicles. For
the purposes of this definition, motor vehicle does not include farm
equipment, snowmobiles, all-terrain vehicles, motorized wheelchairs,
go-carts, gas buggies, golf carts, ski-slope grooming machines, or
vehicles that run only on rails or tracks.
MOTOR VEHICLE SURFACE
Any pervious or impervious surface that is intended to be
used by "motor vehicles" and/or aircraft, and is directly exposed
to precipitation including, but not limited to, driveways, parking
areas, parking garages, roads, racetracks, and runways.
NEW JERSEY STORMWATER BEST MANAGEMENT PRACTICES (BMP) MANUAL
or BMP MANUAL
The manual maintained by the Department providing, in part, design specifications, removal rates, calculation methods, and soil testing procedures approved by the Department as being capable of contributing to the achievement of the stormwater management standards specified in this chapter. The BMP Manual is periodically amended by the Department as necessary to provide design specifications on additional best management practices and new information on already included practices reflecting the best available current information regarding the particular practice and the Department's determination as to the ability of that best management practice to contribute to compliance with the standards contained in this chapter. Alternative stormwater management measures, removal rates, or calculation methods may be utilized, subject to any limitations specified in this chapter, provided the design engineer demonstrates to the municipality, in accordance with §
268-4F of this chapter and N.J.A.C. 7:8-5.2(g), that the proposed measure and its design will contribute to achievement of the design and performance standards established by this chapter.
NODE
An area designated by the State Planning Commission concentrating
facilities and activities which are not organized in a compact form.
NUTRIENT
A chemical element or compound, such as nitrogen or phosphorus,
which is essential to and promotes the development of organisms.
PERSON
Any individual, corporation, company, partnership, firm,
association, political subdivision of this state and any state, interstate
or federal agency.
POLLUTANT
Any dredged spoil, solid waste, incinerator residue, filter
backwash, sewage, garbage, refuse, oil, grease, sewage sludge, munitions,
chemical wastes, biological materials, medical wastes, radioactive
substance [except those regulated under the Atomic Energy Act of 1954,
as amended (42 U.S.C. § 2011 et seq.)], thermal waste, wrecked
or discarded equipment, rock, sand, cellar dirt, industrial, municipal,
agricultural, and construction waste or runoff, or other residue discharged
directly or indirectly to the land, groundwaters or surface waters
of the state, or to a domestic treatment works. "Pollutant" includes
both hazardous and nonhazardous pollutants.
RECHARGE
The amount of water from precipitation that infiltrates into
the ground and is not evapotranspired.
REGULATED IMPERVIOUS SURFACE
Any of the following, alone or in combination:
A.
A net increase of impervious surface;
B.
The total area of impervious surface collected by a new stormwater
conveyance system (for the purpose of this definition, a new stormwater
conveyance system is a stormwater conveyance system that is constructed
where one did not exist immediately prior to its construction or an
existing system for which a new discharge location is created);
C.
The total area of impervious surface proposed to be newly collected
by an existing stormwater conveyance system; and/or
D.
The total area of impervious surface collected by an existing
stormwater conveyance system where the capacity of that conveyance
system is increased.
REGULATED MOTOR VEHICLE SURFACE
Any of the following, alone or in combination:
A.
The total area of motor vehicle surface that is currently receiving
water;
B.
A net increase in motor vehicle surface; and/or quality treatment
either by vegetation or soil, by an existing stormwater management
measure, or by treatment at a wastewater treatment plant, where the
water quality treatment will be modified or removed.
SEDIMENT
Solid material, mineral or organic, that is in suspension,
is being transported, or has been moved from its site of origin by
air, water or gravity as a product of erosion.
SITE
The lot or lots upon which a major development is to occur
or has occurred.
SOIL
All unconsolidated mineral and organic material of any origin.
STATE PLAN POLICY MAP
The geographic application of the State Development and Redevelopment
Plan's goals and statewide policies, and the official map of these
goals and policies.
STORMWATER
Water resulting from precipitation (including rain and snow)
that runs off the land's surface, is transmitted to the subsurface,
or is captured by separate storm sewers or other sewage or drainage
facilities, or conveyed by snow removal equipment.
STORMWATER MANAGEMENT BMP
An excavation or embankment and related areas designed to
retain stormwater runoff. A stormwater management BMP may either be
normally dry (that is, a detention basin or infiltration system),
retain water in a permanent pool (a retention basin), or be planted
mainly with wetland vegetation (most constructed stormwater wetlands).
STORMWATER MANAGEMENT MEASURE
Any practice, technology, process, program, or other method
intended to control or reduce stormwater runoff and associated pollutants,
or to induce or control the infiltration or groundwater recharge of
stormwater or to eliminate illicit or illegal nonstormwater discharges
into stormwater conveyances.
STORMWATER MANAGEMENT PLANNING AREA
The geographic area for which a stormwater management planning
agency is authorized to prepare stormwater management plans, or a
specific portion of that area identified in a stormwater management
plan prepared by that agency.
STORMWATER RUNOFF
Water flow on the surface of the ground or in storm sewers,
resulting from precipitation.
TIDAL FLOOD HAZARD AREA
A flood hazard area in which the flood elevation resulting
from the two-, ten-, or 100-year storm, as applicable, is governed
by tidal flooding from the Atlantic Ocean. Flooding in a tidal flood
hazard area may be contributed to, or influenced by, stormwater runoff
from inland areas, but the depth of flooding generated by the tidal
rise and fall of the Atlantic Ocean is greater than flooding from
any fluvial sources. In some situations, depending upon the extent
of the storm surge from a particular storm event, a flood hazard area
may be tidal in the 100-year storm, but fluvial in more frequent storm
events.
URBAN ENTERPRISE ZONES
A zone designated by the New Jersey Enterprise Zone Authority
pursuant to the New Jersey Urban Enterprise Zones Act, N.J.S.A. 52:27H-60
et seq.
URBAN REDEVELOPMENT AREA
Previously developed portions of areas:
A.
Delineated on the State Plan Policy Map (SPPM) as the Metropolitan
Planning Area (PA1), Designated Centers, Cores or Nodes;
B.
Designated as CAFRA Centers, Cores or Nodes;
C.
Designated as Urban Enterprise Zones; and
D.
Designated as Urban Coordinating Council Empowerment Neighborhoods.
WATER CONTROL STRUCTURE
A structure within, or adjacent to, a water, which intentionally
or coincidentally alters the hydraulic capacity, the flood elevation
resulting from the two-, ten-, or 100-year storm, flood hazard area
limit, and/or floodway limit of the water. Examples of a water control
structure may include a bridge, culvert, dam, embankment, ford (if
above grade), retaining wall, and weir.
WATERS OF THE STATE
The ocean and its estuaries, all springs, streams, wetlands,
and bodies of surface or groundwater, whether natural or artificial,
within the boundaries of the State of New Jersey or subject to its
jurisdiction.
WETLANDS or WETLAND
An area that is inundated or saturated by surface water or
groundwater at a frequency and duration sufficient to support, and
that under normal circumstances does support, a prevalence of vegetation
typically adapted for life in saturated soil conditions, commonly
known as hydrophytic vegetation.
Site design features identified under §
268-4F above, or alternative designs in accordance with §
268-4G above, to prevent discharge of trash and debris from drainage systems shall comply with the following standard to control passage of solid and floatable materials through storm drain inlets. For purposes of this subsection, "solid and floatable materials" means sediment, debris, trash, and other floating, suspended, or settleable solids. For exemptions to this standard see §
268-7B below.
A. Design engineers shall use one 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:
(1) 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; or
(2) A different grate, if each individual clear space in that grate has
an area of no more than 7.0 square inches, or is no greater than 0.5
inch across the smallest dimension.
(a)
Examples of grates subject to this standard include grates in
grate inlets, the grate portion (non-curb-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 system floors used to collect stormwater from the surface
into a storm drain or surface water body.
(3) For curb-opening inlets, including curb-opening inlets in combination
inlets, 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 7.0 square inches, or be no greater than 2.0
inches across the smallest dimension.
B. The standard in Subsection
A above does not apply:
(1) Where each individual clear space in the curb opening in existing
curb-opening inlet does not have an area of more than 9.0 square inches;
(2) Where the municipality agrees that the standards would cause inadequate
hydraulic performance that could not practicably be overcome by using
additional or larger storm drain inlets;
(3) Where flows from the water quality design storm as specified in N.J.A.C.
7:8 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 4.625 inches long and 1.5 inches wide (this
option does not apply for outfall netting facilities); or
(b)
A bar screen having a bar spacing of 0.5 inch.
(c)
Note that these exemptions do not authorize any infringement
of requirements in the Residential Site Improvement Standards for
bicycle safe grates in new residential development [N.J.A.C. 5:21-4.18(b)2
and 7.4(b)1];
(4) Where flows are conveyed through a trash rack that has parallel bars
with one-inch spacing between the bars, to the elevation of the water
quality design storm as specified in N.J.A.C. 7:8; or
(5) 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(c), 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.
Any person(s) who erects, constructs, alters, repairs, converts,
maintains, or uses any building, structure or land in violation of
this chapter shall be subject to the following penalties: $10,000
per month until the Borough, through consultation with their Design
Engineer, determines the violation is remedied.
Each section, subsection, sentence, clause and phrase of this
chapter is declared to be an independent section, subsection, sentence,
clause and phrase, and the finding or holding of any such portion
of this chapter to be unconstitutional, void, or ineffective for any
cause, or reason, shall not affect any other portion of this chapter.
This chapter shall be in full force and effect from and after
its adoption and any publication as required by law.