A.
General. The purpose of this section is to establish a uniform set of specific design standards and construction details. The standards shall be applicable to all site plans, subdivisions and other development applications and shall be used in conjunction with the general design and performance standards outlined elsewhere in this chapter. All improvements shall be installed in complete accordance with the standards of this chapter as specified in this section and as set forth in Chapter 211, Zoning, with other particular specifications approved by the Board and Township Engineer and with all other applicable municipal, county and state regulations. Where both residential and commercial development are planned in a mixed-use development, these standards shall apply to the residential part or parts of such development where such residential part or parts are discrete and separate from planned commercial parts as evidenced by, for example, separate building(s), separate parking and separate access features.
[Amended 6-24-1997 by Ord. No. 97-51]
B.
Standard specifications and construction details.
The Standard Specifications for Road and Bridge Construction of the
New Jersey Department of Transportation, latest edition, including
all addenda, and the Standard Construction Details of the New Jersey
Department of Transportation, latest revision, as modified, supplemented,
amended or superseded by the requirements of this chapter, by the
approval of a final plat, by particular agreement among the Board,
Township Council and subdivider or by other applicable municipal,
county or state regulations shall govern the completion of the required
improvements. Such standard specifications and standard construction
details are made a part of this chapter by this reference and will
not be repeated herein. It is the responsibility of all the subdividers
to familiarize themselves with these standards, copies of which may
be examined at the office of the Township Engineer and may be obtained,
upon payment of the cost thereof, from the New Jersey Department of
Transportation. The requirement of this chapter of an approved final
plat or of particular agreements and conditions of approval and of
applicable municipal, county or state regulations shall govern and
prevail in the case of conflict between them and the standard specifications
or standard construction details. Should the Township adopt, subsequent
to the effective date of this chapter, particular and specific standard
construction details for Stafford Township, they shall govern and
prevail over the Standard Construction Details of the New Jersey Department
of Transportation.
[Amended 10-18-1988 by Ord. No. 88-83; 12-20-1988 by Ord. No. 88-95; 1-31-1989 by Ord. No. 89-10; 3-7-1989 by Ord. No. 89-25; 8-1-1989 by Ord. No. 89-83; 6-24-1997 by Ord. No. 97-51]
A.
The arrangement of streets shall provide for the extension
and realignment, as appropriate, of existing collector and primary
streets. The arrangement of streets now shown on the Master Plan or
an Official Map shall be such as to provide for and encourage the
appropriate extension of existing streets, shall conform to the topography
as far as practicable and shall allow for continued logical extension
into adjoining undeveloped tracts. Streets shall be designed to promote
safety and shall conform to the current requirements and policies
of the American Association of State Highway and Transportation Officials
(AASHTO), except as stated in the minor street design standards.
(1)
Design of minor streets. Minor streets in residential
subdivisions shall be laid out so that there is no possibility of
their use by traffic having neither origin nor destination at the
lots to which they provide access and shall conform to the standards
of this chapter. (See Engineering Plat Detail, Figure 1.[1])
(a)
Culs-de-sac (dead-end streets) may be used where
necessary but should not have a center-line length, from the intersecting
street center line to the center point of the cul-de-sac, less than
100 feet nor longer than 1,200 feet and should not provide access
to more than 25 lots.
(b)
When their use is possible, short loop streets
are preferred to culs-de-sac. Short loop streets should provide access
to no more than 45 lots, except that where access is provided by a
combination of a short loop street and culs-de-sac, the maximum shall
be 60 lots, provided that the length of the loop street alone will
not exceed 3,000 feet. Loop streets shall have both of their termini
located on the same major street to be so classified.
(c)
In all residential zones, development bounded
by any arterial or collector streets shall control access to the streets
by having all driveways intersect minor streets. Where the size, shape,
location or some other unique circumstance may dictate no other alternative
than to have a driveway enter an arterial or collector street, the
lot shall provide on-site turnaround facilities so that it is not
necessary to back any vehicle onto an arterial or collector street,
and abutting lots shall share a common access drive.
[1]
Editor's Note: Engineering Plat Detail, Figure 1, is included as an attachment to this chapter.
(2)
Classification of streets. In any major subdivision,
it shall be the duty of the Board to classify proposed streets according
to their types. The Board, in making its decisions, shall refer to
the Master Plan and shall consider conditions within the subdivision
and surrounding area. (See Engineering Plat Detail, Figure 1.[2])
[2]
Editor's Note: Engineering Plat Detail, Figure 1, is included as an attachment to this chapter.
(3)
Right-of-way and paving widths and street detail. Right-of-way widths, measured from lot line to lot line, graded widths and paving widths and other items shall be not less than the requirements set forth in the following Subsection A(4) unless otherwise indicated on the Master Plan or the Official Map. Where a proposed development will result in the extension of an existing street, the paved width of the extension shall be as set forth in Subsection A(4) hereafter or the paved width of the existing street, whichever is greater.
(4)
Requirements for street classifications. (See Engineering
Plat Detail, Figures 1 and 2.[3])
Type
|
Minor
Residential
|
Residential
Subcollector
|
Primary
Collector
(County
Roads)
|
---|---|---|---|
Right-of-way (row) width (feet)
|
60
|
70
|
80*
|
Paving widths, 2-way (feet)
|
28
|
36
|
40*
|
Curb radii at intersection (feet)
|
25
|
30
|
35
|
Tangents between reverse curves (minimum)
(feet)
|
100
|
200
|
300
|
Horizontal center-line radius (feet)1
|
150
|
500
|
1,000
|
Maximum center-line grades
|
12%
|
10%
|
8%
|
Minimum center-line grades
|
1/2%
|
1/2%
|
1/2%
|
Maximum grades at intersection, 5%
for distance from center-line intersection (feet)
|
100
|
150
|
300
|
Turnaround at end of cul-de-sac without
center island
| |||
Radius of right-of-way (feet)
|
55 to 65
| ||
Radius of pavement
(feet)
|
40 to 50
| ||
Turnaround at end of cul-de-sac with
center island
| |||
Radius of right-of-way (feet)
|
70
| ||
Radius of pavement
(feet)
|
55
| ||
Maximum radius of
center island (feet)
|
27
| ||
Curb face required (inches)
|
6
|
6
|
8
|
Pavement crown (inches)
|
6
|
8
|
8
|
Sidewalks
| |||
Width (feet)
|
4
|
4
|
4
|
Setback (from front
curb face) (feet)
|
6 1/2
|
6 1/2
|
6 1/2
|
NOTES:
| |||
* As designed or indicated on the Master
Plan or mandated by the Ocean County Engineer, Township Planning Board
or Board Engineer.
|
[3]
Editor's Note: Engineering Plat Detail, Figures 1 and 2, is included as an attachment to this chapter.
(5)
Vertical geometric requirements.
(a)
At all points of grade changes, where the algebraic
difference in intersecting grades equals one or greater, a vertical
parabolic curve shall connect the intersecting grade lines. The vertical
curve shall be of a length required to provide a smooth transition
avoiding sharp crests or sags, provide proper drainage flow and provide
the required horizontal and vertical sight and stopping distances
set forth in the current requirements and policies of the American
Association of State Highway and Transportation Officials (AASHTO).
The vertical curve length shall be in accordance with AASHTO criteria
for the design speed of the roadway, prevailing topographic conditions
and existing horizontal and vertical sight obstructions. In no case
shall the vertical curve lengths be less than the following minimums
specified as follows:
(c)
The location, by station, middle ordinate or
K, length and point of vertical intersection (PVI) station must be
indicated on the profiles.
(6)
Where dead-end streets (culs-de-sac) are utilized,
they shall conform to the following standards:
(a)
Dead-end streets of a permanent nature (where
provision for the future extension of the street in the boundary of
the adjoining property is impractical or impossible) or of a temporary
nature (where provision is made for the future extension of the street
to the boundary line of adjoining property) shall provide a turnaround
at the end with a right-of-way radius of not less than 60 feet and
a cartway radius of not less than 50 feet. The center point for the
radius shall be on the center line of the associated street or, if
offset, to a point where the cartway radius also becomes a tangent
to one of the curblines of the associated street. If the cul-de-sac
is offset, the tangent shall be on the right side of the street, wherever
possible, for approaching vehicles. In the center of the turnaround,
a planting island equal in dimension to the cartway radius minus the
cartway width of the roadway shall be provided in lieu of excessive
pavement. (See Engineering Plat Detail, Figure 1.[4])
[4]
Editor's Note: Engineering Plat Detail, Figure 1, is included as an attachment to this chapter.
(b)
If a dead-end street is of a temporary nature,
provisions shall be made for removal of a turnaround and reversion
of the excess right-of-way to the adjoining properties as an off-tract
responsibility to the developer creating the street extension when
the street is extended. (See Engineering Plat Detail, Figure 1.[5])
[5]
Editor's Note: Engineering Plat Detail, Figure 1, is included as an attachment to this chapter.
(7)
No street shall have a name which will duplicate or
so nearly duplicate in spelling or phonetic sound the names of existing
streets so as to be confusing therewith. The continuation of an existing
street shall have the same name. The names of new streets must be
approved by the approving authority.
(8)
All streets shall be curvilinear in horizontal alignment
wherever deemed practical and feasible by either the Planning Board
or the Planning Board Engineer and shall be designed to discourage
speed and monotony. The maximum straight line distance shall not exceed
1,000 feet.
(9)
Nonresidential streets. The widths of internal streets
in business or industrial developments designed as a whole in accordance
with a comprehensive site plan shall be determined by the Board in
each case in the light of the circumstances of the particular situation
and with a view to assuring the maximum safety and convenience of
access for traffic and fire-fighting equipment, circulation and parking,
including provisions for the loading and unloading of goods, and,
in general, shall conform to collector street design standards.
(10)
Subdivisions on existing streets. Subdivisions
that adjoin or include existing streets which do not conform to the
widths as shown on the Master Plan, the Official Map or the street
width requirements of this chapter shall dedicate the required additional
width along either one or both sides of the street as the Board may
deem necessary.
(11)
Street intersections. Street intersections shall
be designed according to the following standards:
(12)
Approaches to all intersections shall follow
a straight line for at least 100 feet, measured from the intersecting
street corner line to the beginning of the curve. Streets intersecting
another street from opposite sides shall have at least 200 feet between
the two street center lines. Any development abutting an existing
street which is classified as a collector street shall be permitted
not more than one new street every 800 feet on the same side of the
street within the boundaries of the tract being subdivided. In the
spacing of streets, consideration will be given to the location of
existing intersections on both sides of the development.
(13)
Sight triangles shall be provided as required
in this chapter.
(14)
No development showing reserve strips controlling
access to streets or another area, either developed or undeveloped,
shall be approved, except where the control and disposal of land comprising
such strips has been given to the governing body.
(15)
Streets shall be constructed in accordance with
the following standards (see Engineering Plat Detail, Figure 3[6]) and in accordance with the Standard Specifications for
Road and Bridge Construction of the New Jersey Department of Transportation
as herein defined.
[6]
Editor's Note: Engineering Plat Detail, Figure 3, is included as an attachment to this chapter.
(16)
Street signs shall be enameled metal of the
size and color equal and similar to the type now in use by Stafford
Township. They shall be erected on galvanized steel posts in a workmanlike
manner. At street intersections, one post shall carry two signs at
right angles to denote the name of each street. Posts shall be 10
feet overall, with three feet in the ground surrounded with concrete.
(17)
Street and road excavations shall include the
work of clearing and grubbing within the limits of the right-of-way
and outside thereof, within slope areas to be graded or as otherwise
prescribed. The ground surface shall be cleared of trees, brush, weeds,
roots, matted leaves, debris and other unsuitable matter before street
and roadway subgrade operations are commenced. Trees which do not
interfere with the operations shall not be removed but shall be protected
during the progress of the work. Branches of trees overhanging the
traveled way shall be cut off to a height of 14 feet above it, and
cuts made more than one inch in diameter shall be painted. Tree stumps
shall be grubbed out within the areas to be graded where the subgrade
will be less than 3 1/2 feet above the ground surface.
B.
Streetlights.
(1)
Miscellaneous provisions.
(a)
When required by the provisions of this chapter
or by the approving authority, streetlights shall be installed in
accordance with the recommended practice of street and highway lighting
of the Illuminating Engineering Society along all streets within and
abutting any development.
(b)
Said streetlights shall be high-pressure sodium
and shall meet the standards of Atlantic Electric, which presently
are as follows:
Watts
|
Lumens
| |
---|---|---|
50
|
3,600
| |
70
|
5,500
| |
100
|
8,550
| |
150
|
14,400
| |
250
|
24,750
| |
400
|
45,000
|
(c)
All streetlighting standards, fixtures or luminaries
which may be required shall be installed at the same time in a single
process of installation. All wires and other equipment necessary to
serve the streetlighting system shall be placed underground, the cost
to be paid by the developer, and arrangements shall be made with the
appropriate utility for carrying out this provision.
(2)
In any development consisting of four or more residential
units or any other type of nonresidential development, the developer
shall be responsible for providing streetlighting so as to provide
a minimum lighting level of five-tenths (0.5) horizontal footcandle
on all local, local collector, minor arterial and principal arterial
streets. The developer shall pay the full cost for the installation
of any streetlights. Streetlights shall be of a type approved by the
Council and by the electric utility company serving the proposed development.
Upon notice from the Township, the developer shall deposit with the
Township cash or an equivalent in the amount determined by the electric
utility to be the cost of the initial installation of the streetlights.
The Township shall utilize said cash deposit to pay for the cost of
the initial installation of said streetlights.
(3)
Streetlighting shall be provided by the developer
in any development which has been approved by the Planning Board,
Board of Adjustment or the Council. The Planning Board, Board of Adjustment
or the Council, in case of appeal, in approving any development shall
require the developer to install streetlighting as a condition of
its approval of the development. The developer shall submit a plan
for the installation of streetlights to the Board Engineer for approval.
[Added 6-24-1997 by Ord. No. 97-51]
Streets in all residential developments shall
be designed and constructed in accordance with Subchapter 4 (Streets
and Parking) of N.J.S.A. 5:21 (Residential Site Improvement Standards),
as amended.
[Amended 10-18-1988 by Ord. No. 88-83; 1-31-1989 by Ord. No. 89-10; 3-7-1989 by Ord. No. 89-25; 9-21-1993 by Ord. No. 93-60; 6-24-1997 by Ord. No. 97-51]
A.
Concrete curb shall be installed along every street
within the development and at intersections with local roads, county
roads and state highways, except in the PA, PV and FA Zones, where
secondary local streets serving primarily a residential land access
function shall be exempt from the curb installation requirement. The
standard curb section to be used shall be not more than 10 feet in
length and shall be set in accordance with approved lines and grades,
and radial curbs shall be formed in an arc segment in a smooth curve.
Chord segments are prohibited. (See Engineering Plat Detail, Figure
4.[1])
[1]
Editor's Note: Engineering Plat Detail, Figure 4, is included as an attachment to this chapter.
B.
Concrete curbs shall be eight inches by six inches
by 18 inches (six inches' exposed face), using Class B concrete having
a twenty-eight-day compressive strength of 4,500 pounds per square
inch. (See Engineering Plat Detail, Figure 4.[2])
[2]
Editor's Note: Engineering Plat Detail, Figure 4, is included as an attachment to this chapter.
C.
Expansion joints conforming to the requirements of
the New Jersey Department of Transportation shall be provided at twenty-foot
intervals in all curbing, with construction joints being provided
at ten-foot intervals. (See Engineering Plat Detail, Figure 4.[3])
[3]
Editor's Note: Engineering Plat Detail, Figure 4, is included as an attachment to this chapter.
D.
At locations specified by the approving authority
and at all intersections, the curbing shall have a barrier-free design
to provide a ramp for bicycles and/or wheelchairs, details for which
may be obtained from the Engineer. In certain instances it may be
necessary or desirable to construct alternate curb types. For example,
these may be required by the Planning Board on the perimeter of channelizing
islands or in areas of unusually heavy gutter drainage flow or may
be desired by the subdivider for decorative purposes or to preserve
vegetation (e.g., granite block curb, rolled concrete curb, etc.).
If alternate curb types are to be permitted, an appropriate construction
detail shall be submitted for approval with the preliminary and final
plat. (See Engineering Plat Detail, Figure 4.[4])
[4]
Editor's Note: Engineering Plat Detail, Figure 4, is included as an attachment to this chapter.
[Added 6-24-1997 by Ord. No. 97-51]
Curbs, curbs and gutters and shoulders in all
residential developments shall be designed and constructed in accordance
with Subchapter 4 (Streets and Parking) of N.J.A.C 5:21 (Residential
Site Improvement Standards), as amended.
[Amended 12-20-1988 by Ord. No. 88-95]
Monuments shall be the size and shape required
by N.J.S.A. 46:23-9.11 of the Map Filing Law, as amended, and shall
be placed in accordance with the statute and indicated on the final
map.
[Amended 10-18-1988 by Ord. No. 88-76; 12-20-1988 by Ord. No. 88-95; 1-31-1989 by Ord. No. 89-10]
The following shade trees or trees of equal
or better quality and suitability shall be planted in the following
locations. (Only nursery grown, healthy, cultivated varieties of the
following species shall be utilized. All plantings must be approved
by the board of jurisdiction or the Township Landscape Architect):
B.
Plantings along streets or areas to be dedicated to
Stafford Township (uplands):
(1)
Acer saccharum, sugar maple.
(2)
Acer platanoides, Norway maple.
(3)
Fraxinus americana, white ash.
(4)
Pyrus calleryana, callery pear.
(5)
Quercus borealis, red oak.
(6)
Quercus phellos, willow oak.
(7)
Sophora japonica, scholartree.
(8)
Tilia cordata, littleleaf linden.
(9)
Zelkova serrata, Zelkova.
C.
Plantings along streets or areas to be dedicated to
Stafford Township (adjacent to fresh water):
D.
Site plantings (adjacent to fresh or brackish waters)
other than areas to be dedicated to Stafford Township:
E.
Site plantings on uplands other than areas to be dedicated
to Stafford Township:
F.
All plantings shall be planted in accordance with
the details provided herewith, and all landscape plans shall include
planting details which conform to the details provided herewith and
additional requirements as appropriate to assure the proper installation,
survival and growth of all plantings. (See Detail Nos. 1 through 4.[1])
[Amended 2-21-1989 by Ord. No. 89-15]
[1]
Editor's Note: Details Nos. 1 through 4 are included as attachments to this chapter.
G.
All plantings shall conform to the standards of the
American Association of Nurserymen, Inc., as set in the most recent
addition of the American Standard for Nursery Stock (ANSI Z60.1).
Trees which are diseased, damaged, exhibit irregular or undesirable
branching, habit or form and trees with a cut or dead leader shall
not be utilized.
[Added 11-21-1989 by Ord. No. 89-66]
[Amended 10-8-1988 by Ord. No. 88-83; 1-31-1989 by Ord. No. 89-10; 3-7-1989 by Ord. No. 89-25; 6-24-1997 by Ord. No. 97-51]
A.
Nonresidential development. Sidewalks shall be required,
except in the PA, PV and FA Zones. Sidewalks shall be at least four
inches thick of Class B concrete having a twenty-eight-day compressive
strength of 4,500 pounds per square inch. Expansion joints shall be
provided at twenty-foot intervals in sidewalks, with construction
joints at four-foot intervals. Expansion joints shall also be provided
at all points where sidewalks intersect or abut concrete drive aprons
and at all points where concrete drive aprons abut curbing. Concrete
drive aprons shall have a thickness of at least six inches and shall
be of Class B concrete having a twenty-eight-day compressive strength
of 4,500 pounds per square inch and shall be air-entrained. Such driveway
aprons shall be reinforced with six inches by six inches of 10/10
welded steel wire mesh. (See Engineering Plat Detail, Figure 5.[1])
[1]
Editor's Note: Engineering Plat Detail, Figure 5, is included as an attachment to this chapter.
B.
Residential Development.
(1)
Sidewalks and graded areas shall be designed and constructed
in accordance with Subchapter 4 (Streets and Parking) of N.J.A.C.
5:21 (Residential Site Improvement Standards), as amended.
(2)
Driveway aprons are required in residential developments
and shall be constructed in accordance with the specifications of
this chapter.
[Amended 9-20-1988 by Ord. No. 88-74; 1-31-1989 by Ord. No. 89-10; 3-7-1989 by Ord. No. 89-25; 1-17-1994 by Ord. No. 94-15; 6-24-1997 by Ord. No. 97-51; 11-5-2007 by Ord. No. 2007-99; 5-4-2010 by Ord. No.
2010-16]
A.
Sight
triangles shall be required at each quadrant of an intersection of
streets and streets and driveways. The area within the sight triangles
shall be maintained as part of the lot adjoining the street and set
aside on any subdivision or site plan as a sight triangle easement.
Within a sight triangle, no grading, planting or structure shall be
erected or maintained between 30 inches and 84 inches above the center-line
grade of each street or driveway intersection, excluding utility poles,
street name signs and official traffic regulation signs. Where any
street or driveway intersection involves earth banks or vegetation,
including trees, the developer shall trim such vegetation and trees,
as well as establish proper excavation and grading, to provide the
sight triangle. Trees within a sight triangle or distance area shall
be of sufficient size to be pruned to a seven-foot branching height
upon planting. Planting within a sight triangle or distance area must
be approved by the Township Engineer.
B.
The sight
point along the minor roadway shall be located 15 feet behind the
extended edge of pavement of the major road in the center of the approaching
travel lane. The sight point along a driveway shall be located 10
feet behind the extended edge of pavement of the intersecting road
in the center of the approaching travel lane.
C.
The "sight
triangle" is that area inside the straight line connecting the sight
point on the minor road with the center of the approaching travel
lane along the major roadway. The length of the straight line between
shall be dependent on the speed limit of the intersecting roadway
and shall be as detailed in Figure 6.[1]
[1]
Editor's Note: Figure 6, Sight Triangles, is included as an attachment to this chapter.
D.
A sight
triangle easement dedication shall be expressed on the plat as follows:
"Sight triangle easement subject to grading, planting and construction
restrictions as provided for in the Township Land Development Ordinance."
Portions of the lot set aside for the sight triangle may be calculated
in determining the lot area and may be included in establishing the
minimum setbacks required by the zoning provisions.[2]
[Added 6-24-1997 by Ord. No. 97-51]
Sight triangle easements shall be provided in
accordance with Subchapter 4 (Streets and Parking) of N.J.A.C. 5:21
(Residential Site Improvement Standards), as amended.
[Amended 1-31-1989 by Ord. No. 89-10; 4-18-1989 by Ord. No. 89-31; 8-1-1989 by Ord. No. 89-53; 9-3-1996 by Ord. No. 96-62; 3-2-2004 by Ord. No. 2004-22]
All lots, open spaces and planting areas shall
be graded to secure proper drainage, to prevent the collection of
stormwater and to prevent an adverse impact on adjacent properties.
The grading shall be performed in a manner which will minimize the
damage to or destruction of trees growing on the land. This shall
include the installation of protective barriers, such as four-foot-high
snow fence or silt fence along the drip line of the tree or at a distance
of not less than four feet from shrubs and not less than 10 feet from
trees. These barriers shall not be supported by the plants they are
protecting, but shall be self-supporting. Topsoil shall be provided
and/or redistributed on the surface as cover and shall be stabilized
by seeding or planting. Gradings shall be designed to prevent or minimize
drainage to structures or improvements when major storms, exceeding
the design basis of the storm drainage system, occur. Grading plans
shall have been submitted with the preliminary and final plats, and
any departure from these plans must be approved in accordance with
the requirements of this section for the modification of improvements.
A.
Wherever possible, the land shall be graded so that
the stormwater and surface drainage from each lot shall drain directly
to the street and be diverted to a storm sewer conveyance or other
approved point of collection so as to not create a hazard. If impossible
to drain directly to the street, it shall be directed to a system
of interior yard drainage designed in accordance with this chapter.
[Amended 1-20-2004 by Ord. No. 2004-10]
B.
Unless otherwise required by this chapter, all tree
stumps, masonry and other obstructions shall be removed to a depth
of two feet below existing or finished grade, whichever is lower.
C.
The minimum slope for lawns and disturbed areas shall
be 1 1/2% and, for smooth, hard-finished surfaces other than
roadways, 4/10 of 1 1/2%.
D.
Lots shall be graded so as to drain surface water
away from foundation walls. The grade away from foundation walls shall
fall a minimum of six inches within the first 10 feet. Where lot lines,
walls, slopes or other physical barriers prohibit six inches of fall
within 10 feet, drains or swales shall be provided to ensure drainage
away from the structure. The maximum grade for lawn and disturbed
areas more than 10 feet from a building shall be 25%, except that
for driveways, the maximum grade shall be 15%.
[Amended 12-17-1996 by Ord. No. 96-85; 1-20-2004 by Ord. No. 2004-10]
E.
All roof leaders shall connect into a subsurface infiltration
system in accordance with a detail entitled "Detail Residential Recharge
Trench" on file with the Community Development office of the Township
of Stafford. The builder shall have the option of submitting an alternate
design for an infiltration system to the Township Engineer for review.
The alternate design of a subsurface infiltration system shall be
designed to retain the total runoff volume generated from any net
increase in impervious surface created solely by the roof area of
the building for the ten-year storm of twenty-four-hour duration,
including credit for percolation. The side area of the subsurface
infiltration system shall be the only area utilized in the percolation
credit calculation. The rate of percolation shall be developed utilizing
information contained in the Soil Survey of Ocean County New Jersey
as prepared by the United States Department of Agriculture, Soil Conservation
Service. Storm water runoff volume calculations shall be developed
using an acceptable method of determining discharge, as defined in
United States Department of Agriculture, Soil Conservation Service,
Urban Hydrology for Small Watersheds, Technical Release No. 55, latest
edition, for Type III storms. Curve numbers shall be computed weighted
averages for proposed conditions and not typical residential values
as published in Technical Release No. 55. Predevelopment curve numbers
shall be computed for the tract prior to any development and shall
be representative of good-condition pasture land or woodlands. Calculations
shall be submitted on a form acceptable to the Township Engineer.
[Amended 12-17-1996 by Ord. No. 96-85]
F.
Site grading and filling, if necessary, shall be performed
such that the outside finished grade shall be above the crown of the
roadway directly in front of the structure in accordance with the
standards set forth in this section. All lots being filled shall be
filled so as to allow complete surface draining of the lot to the
street or natural drainage rights-of-way. No construction or regrading
shall be permitted which creates or aggravates water stagnation, siltation
or drainage problems on adjacent properties. Any topsoil disturbed
during approved operations shall be redistributed throughout the site.
G.
Sites requiring cuts or fills shall be designed with
retaining walls and protective tile or masonry rings such that a minimum
amount of trees will have to be removed in order to meet existing
grades.
H.
Retaining walls installed in slope-control areas shall
be constructed of treated timber or logs, reinforced concrete, other
reinforced masonry or of other construction acceptable to the Engineer
and shall be adequately designed and detailed on the final plat to
carry all earth pressures, including any surcharges. All retaining
walls shall be constructed in accordance with the manufacturer's recommendation.
I.
The subdivider shall take all necessary precautions
to prevent any siltation of streams during the construction of the
subdivision. The subdivider shall provide adequate provisions to prevent
all deposition of silt or other eroded material in any stream or watercourse.
Such provisions may include but are not limited to construction and
maintenance of siltation basins or holding ponds and diversion berms
throughout the course of construction and planting areas.
J.
All lots, open space and planting areas shall be seeded
with a suitable stabilizing ground cover approved by the Township
Engineer. On any waterfront lots or open spaces, the Board may allow
a suitable stabilizing ground cover other than seeding if approved
by the Township Engineer.
K.
No topsoil shall be removed from the site or used
as soil. Topsoil moved during the course of construction shall be
redistributed so as to provide at least four inches of spread cover
to all seeding and planting areas of the site and shall be stabilized
by seeding or planting. In the event that the quantity of topsoil
at the site is insufficient to provide four inches of cover for all
seeding and planting areas, the developer shall provide and distribute
a sufficient quantity of topsoil to provide such a cover. Topsoil
shall be approved by the Township Engineer.
L.
This section shall be applicable to all subdivisions,
site plans and all individual dwelling unit(s) site disturbances.
M.
If, in the opinion of the Township Engineer, the requirements
of this section cannot be met, a certification from a licensed engineer
setting forth an acceptable drainage and grading plan shall be necessary
prior to the issuance of a certificate of occupancy.
N.
The subsurface infiltration system shall be installed
in accordance with N.J.A.C. 7:10-12.13, entitled "Distances."
[Added 12-17-1996 by Ord. No. 96-85]
A.
Flooding in the Township of Stafford occurs infrequently
because of the low-runoff-generating character of the soil and the
extensive areas of wetlands which absorb the impact of runoff. However,
as land is developed, the permeable soils are replaced by impermeable
surfaces which increase runoff volumes. All future development in
Stafford Township shall utilize the best available technology to minimize
off-site stormwater runoff, increase on-site infiltration, simulate
natural drainage systems and minimize off-site discharge of pollutants
to ground- or surface water and encourage natural filtration functions.
B.
The runoff-control methods shall be to prevent the
rate of off-site stormwater runoff during the construction and operation
of a development under any storm conditions from exceeding the rate
of runoff that would occur under the existing predeveloped conditions.
[Amended 12-16-1997 by Ord. No. 97-101]
C.
General. All streets shall be provided with stormwater
inlets and pipes where the same may be necessary for proper surface
drainage. The system shall be adequate to carry off and/or store the
stormwater and natural drainage water which originates beyond the
development boundaries and passes through the development, calculated
on the basis of maximum potential development permitted. No stormwater
runoff or natural drainage water shall be so diverted as to overload
existing drainage systems or to create flooding or the need for additional
drainage structures on other lands without proper and approved provisions
being made for taking care of these conditions, including off-tract
improvements.
D.
The Township recognizes the adverse effect improperly
managed stormwater can have on the environment and as such will treat
a nonresidential development site as a closed system within which
drainage systems must be designed using the best available technology
to contain runoff and ground- and surface water pollution increases
within the site in order to minimize off-site impacts.
[Added 6-23-1998 by Ord. No. 98-44]
[Amended 6-23-1998 by Ord. No. 98-44]
A.
Residential.
(1)
All stormwater management for residential development
west of the Garden State Parkway must comply with the RSIS as set
forth in N.J.A.C. 5:21-7 et seq. and the Pinelands Area development
requirements.
[Amended 12-6-2005 by Ord. No. 2005-105; 12-4-2007 by Ord. No. 2007-113]
(2)
All stormwater management for residential development
east of the Garden State Parkway must comply with the special area
standards as set forth in N.J.A.C. 5:21-7 et seq.
B.
Nonresidential.
(1)
All stormwater management for nonresidential development west of the Garden State Parkway must comply with the requirements as set forth in § 130-74A(1) and the remainder of the stormwater management sections of this chapter except § 130-76.
[Amended 12-6-2005 by Ord. No. 2005-105]
(2)
All stormwater management for nonresidential development east of the Garden State Parkway must comply with the requirements as set forth in § 130-74A(2) and the remainder of the stormwater management sections of this chapter except § 130-76.1.
[Amended 12-4-2007 by Ord. No. 2007-113]
[1]
Editor's Note: See also Appendix A of this chapter, Special Area Standards for Stormwater Management, which is included as an attachment to this chapter.
[Amended 1-18-1988 by Ord. No. 88-76; 11-21-1989 by 89-66; 12-16-1997 by Ord. No. 97-101; 6-23-1998 by Ord. No. 98-44]
No drainage pipe or easement shall be permitted
within 25 feet of any existing or proposed individual sewage disposal
system. At least two fee zero inches of minimum cover over the top
of the pipe at all times, including during construction, must be provided.
A.
Scope and purpose.
(1)
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. To minimize the impact of development on the quality of the Township's groundwater resources and to limit the risk of contamination of the public water supply, nonstructural strategies must comply with the requirements set forth in § 130-83. Development located in the WPO (Wellhead Protection Overlay) zone must comply with the requirements set forth in § 211-25.1. Multiple stormwater management BMPs may be necessary to achieve the established performance standards for water quality, quantity, and groundwater recharge.
(2)
Purpose. The purpose of this section is to establish minimum stormwater management requirements and controls for "major development," as defined below in § 130-76B.
(3)
(4)
Compatibility with other permit and ordinance requirements.
(a)
Development approvals issued pursuant to this section are to
be considered an integral part of development approvals and do not
relieve the applicant of the responsibility to secure required permits
or approvals for activities regulated by any other applicable code,
rule, act, or ordinance. In their interpretation and application,
the provisions of this section shall be held to be the minimum requirements
for the promotion of the public health, safety, and general welfare.
(b)
This section is not intended to interfere with, abrogate, or
annul any other ordinances, rule or regulation, statute, or other
provision of law except that, where any provision of this section
imposes restrictions different from those imposed by any other ordinance,
rule or regulation, or other provision of law, the more restrictive
provisions or higher standards shall control.
B.
CAFRA CENTERS, CORES OR NODES
CAFRA PLANNING MAP
COMMUNITY BASIN
COMPACTION
CONTRIBUTORY DRAINAGE AREA
CORE
COUNTY REVIEW AGENCY
DEPARTMENT
DESIGN ENGINEER
DESIGNATED CENTER
DEVELOPMENT
(1)
DISTURBANCE
DRAINAGE AREA
EMPOWERMENT NEIGHBORHOODS
ENVIRONMENTALLY CONSTRAINED AREA
ENVIRONMENTALLY CRITICAL AREA
EROSION
FILTER MATERIAL
GREEN INFRASTRUCTURE
HUC 14 or HYDROLOGIC UNIT CODE 14
IMPERVIOUS SURFACE
INFILTRATION
LEAD PLANNING AGENCY
MAJOR DEVELOPMENT
(1)
(a)
(b)
(c)
(d)
(2)
MOTOR VEHICLE
MOTOR VEHICLE SURFACE
MUNICIPALITY
NEW JERSEY STORMWATER BEST MANAGEMENT PRACTICES (BMP) MANUAL
or BMP MANUAL
NODE
NUTRIENT
PERSON
POLLUTANT
RECHARGE
REGULATED IMPERVIOUS SURFACE
(1)
(2)
(3)
(4)
REGULATED MOTOR VEHICLE SURFACE
(1)
(2)
SEDIMENT
SITE
SOIL
STATE DEVELOPMENT AND REDEVELOPMENT PLAN METROPOLITAN PLANNING
AREA (PA1)
STATE PLAN POLICY MAP
STORMWATER
STORMWATER MANAGEMENT BMP
STORMWATER MANAGEMENT MEASURE
STORMWATER MANAGEMENT PLANNING AGENCY
STORMWATER MANAGEMENT PLANNING AREA
STORMWATER RUNOFF
SUBSURFACE INFILTRATION SYSTEMS
TIDAL FLOOD HAZARD AREA
URBAN COORDINATING COUNCIL EMPOWERMENT NEIGHBORHOOD
URBAN ENTERPRISE ZONES
URBAN REDEVELOPMENT AREA
WATER CONTROL STRUCTURE
WATERS OF THE STATE
WETLANDS or WETLAND
Definitions. For the purpose of this section, 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.
Those areas with boundaries incorporated by reference or
revised by the Department in accordance with N.J.A.C. 7:7-13.16.
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).
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.
An increase in soil bulk density.
The area from which stormwater runoff drains to a stormwater
management measure, not including the area of the stormwater management
measure itself.
A pedestrian-oriented area of commercial and civic uses serving
the surrounding municipality, generally including housing and access
to public transportation.
An agency designated by the County Board of Chosen Freeholders
to review municipal stormwater management plans and implementing ordinance(s).
The county review agency may either be:
The New Jersey Department of Environmental Protection.
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.
A State Development and Redevelopment Plan Center as designated
by the State Planning Commission such as urban, regional, town, village,
or hamlet.
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
means: 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.
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.
A geographic area within which stormwater, sediments, or
dissolved materials drain to a particular receiving waterbody or to
a particular point along a receiving waterbody.
Neighborhoods designated by the Urban Coordinating Council
"in consultation and conjunction with" the New Jersey Redevelopment
Authority pursuant to N.J.S.A. 55:19-69.
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.
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
well head 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.
The detachment and movement of soil or rock fragments by
water, wind, ice, or gravity.
Washed gravel, crushed stone, slag or clean bank run gravel
ranging in size from 1/2 to 2 1/2 inches free of dust, ashes
or clay.
A stormwater management measure that manages stormwater close
to its source by:
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.
A surface that has been covered with a layer of material
so that it is highly resistant to infiltration by water.
The process by which water seeps into the soil from precipitation.
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.
An individual development, as well as multiple developments
that individually or collectively result in:
The disturbance of one or more acres of land since February
2, 2004;
The creation of one-quarter acre or more of regulated impervious
surface since February 2, 2004;
The creation of one-quarter acre or more of regulated motor
vehicle surface since March 2, 2021; or
A combination of the conditions in (1)(b) and (c) 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.
Major development includes 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 (1)(a), (b), (c) or (d) 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.
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.
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.
Any city, borough, town, township, or village.
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 § 130-76D(6) of this section 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.
An area designated by the State Planning Commission concentrating
facilities and activities which are not organized in a compact form.
A chemical element or compound, such as nitrogen or phosphorus,
which is essential to and promotes the development of organisms.
Any individual, corporation, company, partnership, firm,
association, political subdivision of this state and any state, interstate
or federal agency.
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, ground waters or surface waters
of the state, or to a domestic treatment works. "Pollutant" includes
both hazardous and nonhazardous pollutants.
The amount of water from precipitation that infiltrates into
the ground and is not evapotranspired.
Any of the following, alone or in combination:
A net increase of impervious surface;
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);
The total area of impervious surface proposed to be newly collected
by an existing stormwater conveyance system; and/or
The total area of impervious surface collected by an existing
stormwater conveyance system where the capacity of that conveyance
system is increased.
Any of the following, alone or in combination:
The total area of motor vehicle surface that is currently receiving
water;
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.
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.
The lot or lots upon which a major development is to occur
or has occurred.
All unconsolidated mineral and organic material of any origin.
An area delineated on the State Plan Policy Map and adopted
by the State Planning Commission that is intended to be the focus
for much of the state's future redevelopment and revitalization efforts.
The geographic application of the State Development and Redevelopment
Plan's goals and statewide policies, and the official map of these
goals and policies.
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.
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).
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.
A public body authorized by legislation to prepare stormwater
management plans.
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.
Water flow on the surface of the ground or in storm sewers,
resulting from precipitation.
A subsurface storage facility consisting of 360° perforated
pipe enclosed in an envelope of filter material wrapped on top and
sides with filter fabric that receives and temporarily stores stormwater
runoff.
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.
A neighborhood given priority access to state resources through
the New Jersey Redevelopment Authority.
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.
Previously developed portions of areas:
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.
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.
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.
C.
Design and performance standards for stormwater management measures.
(1)
Stormwater management measures for major development shall be designed
to provide erosion control, groundwater recharge, stormwater runoff
quantity control, and stormwater runoff quality treatment as follows:
(a)
The minimum standards for erosion control are those established
under the Soil and Sediment Control Act, N.J.S.A. 4:24-39 et seq.,
and implementing rules at N.J.A.C. 2:90.
(b)
The minimum standards for groundwater recharge, stormwater quality,
and stormwater runoff quantity shall be met by incorporating green
infrastructure.
(2)
The standards in this section apply only to new major development
and are intended to minimize the impact of stormwater runoff on water
quality and water quantity in receiving water bodies and maintain
groundwater recharge. The standards do not apply to new major development
to the extent that alternative design and performance standards are
applicable under a regional stormwater management plan or water quality
management plan adopted in accordance with Department rules.
D.
Stormwater management requirements for major development.
(1)
The development shall incorporate a maintenance plan for the stormwater management measures incoroorated into the design of a major development in accordance with § 130-76J.
(2)
Stormwater management measures shall avoid adverse impacts of concentrated
flow on habitat for threatened and endangered species as documented
in the Department's Landscape Project or Natural Heritage Database
established under N.J.S.A. 13:1B-15.147 through 15.150, particularly
Helonias bullata (swamp pink) and/or Clemmys muhlnebergi (bog turtle).
(3)
The following linear development projects are exempt from the groundwater recharge, stormwater runoff quality, and stormwater runoff quantity requirements of § 130-76D(16) through (18):
(a)
The construction of an underground utility line provided that
the disturbed areas are revegetated upon completion;
(b)
The construction of an aboveground utility line provided that
the existing conditions are maintained to the maximum extent practicable;
and
(c)
The construction of a public pedestrian access, such as a sidewalk
or trail with a maximum width of 14 feet, provided that the access
is made of permeable material.
(4)
A waiver from strict compliance from the green infrastructure, groundwater recharge, stormwater runoff quality, and stormwater runoff quantity requirements of § 130-76D(16) through (18) may be obtained for the enlargement of an existing public roadway or railroad; or the construction or enlargement of a public pedestrian access, provided that the following conditions are met:
(a)
The applicant demonstrates that there is a public need for the
project that cannot be accomplished by any other means;
(b)
The applicant demonstrates through an alternatives analysis, that through the use of stormwater management measures, the option selected complies with the requirements of § 130-76D(16) through (18) to the maximum extent practicable;
(c)
The applicant demonstrates that, in order to meet the requirements of § 130-76D(16) through (18), existing structures currently in use, such as homes and buildings, would need to be condemned; and
(d)
The applicant demonstrates that it does not own or have other rights to areas, including the potential to obtain through condemnation lands not falling in § 130-76D(3) above within the upstream drainage area of the receiving stream, that would provide additional opportunities to mitigate the requirements of § 130-76D(16) through (18) that were not achievable onsite.
(5)
Tables 1 through 3 below summarize the ability of stormwater best management practices identified and described in the New Jersey Stormwater Best Management Practices Manual to satisfy the green infrastructure, groundwater recharge, stormwater runoff quality and stormwater runoff quantity standards specified in § 130-76D(16) through (18). When designed in accordance with the most current version of the New Jersey Stormwater Best Management Practices Manual, the stormwater management measures found at N.J.A.C. 7:8-5.2 (f) Tables 5-1, 5-2 and 5-3 and listed below in Tables 1,2 and 3 are presumed to be capable of providing stormwater controls for the design and performance standards as outlined in the tables below. Upon amendments of the New Jersey Stormwater Best Management Practices to reflect additions or deletions of BMPs meeting these standards, or changes in the presumed performance of BMPs designed in accordance with the New Jersey Stormwater BMP Manual, the Department shall publish in the New Jersey Registers a notice of administrative change revising the applicable table. The most current version of the BMP Manual can be found on the Department's website at: https://njstormwater.org/bmp_manual2.htm.
(6)
Where the BMP tables in the NJ Stormwater Management Rule are different
due to updates or amendments with the tables in this section, the
BMP Tables in the Stormwater Management Rule at N.J.A.C. 7:8-5.2(f)
shall take precedence.
Table 1
Green Infrastructure BMPs for Groundwater Recharge, Stormwater
Runoff Quality, and/or Stormwater Runoff Quantity
| ||||
---|---|---|---|---|
Best Management Practice
|
Stormwater Runoff Quality TSS Removal Rate
|
Stormwater Runoff Quantity
|
Groundwater Recharge
|
Minimum Separation from Seasonal High Water Table
(feet)
|
Cistern
|
0%
|
Yes
|
No
|
—
|
Dry well(a)
|
0%
|
No
|
Yes
|
2
|
Grass swale
|
50% or
|
No
|
No
|
2(e)
|
Green roof
|
0%
|
Yes
|
No
|
—
|
Manufactured treatment
|
50% or
|
No
|
No
|
Dependent upon the
|
Pervious
|
Yes(b)
|
2(b)
| ||
Small-scale bioretention
|
80% or
|
Yes
|
Yes(b)
No(c)
|
2(b)
1(c)
|
Small-scale infiltration basin(a)
|
80%
|
Yes
|
Yes
|
2
|
Small-scale sand filter
|
80%
|
Yes
|
Yes
|
2
|
Vegetative filter strip
|
60% to 80%
|
No
|
No
|
—
|
Table 2
Green Infrastructure BMPs for Stormwater Runoff Quantity (or
for Groundwater Recharge and/or Stormwater Runoff Quality with a Waiver
or Variance from N.J.A.C. 7:8-5.3)
| ||||
---|---|---|---|---|
Best Management Practice
|
Stormwater Runoff Quality TSS Removal Rate
|
Stormwater Runoff Quantity
|
Groundwater Recharge
|
Minimum Separation from Seasonal High Water Table
(feet)
|
Bioretention
|
80 or 90
|
Yes
|
Yes(b)
|
2(b)
|
Infiltration
|
80
|
Yes
|
Yes
|
2
|
Standard constructed
|
90
|
Yes
|
No
|
N/A
|
Table 3
BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or
Stormwater Runoff Quantity only with a Waiver or Variance from N.J.A.C.
7:8-5.3
| ||||
---|---|---|---|---|
Best Management Practice
|
Stormwater Runoff Quality TSS Removal Rate
|
Stormwater Runoff Quantity
|
Groundwater Recharge
|
Minimum Separation from Seasonal High Water Table
(feet)
|
Blue roof
|
0
|
Yes
|
No
|
N/A
|
Extended detention
|
40-60
|
Yes
|
No
|
1
|
Manufactured treatment device(h)
|
50 or 80
|
No
|
No
|
Dependent upon the device
|
Sand filter(c)
|
80
|
Yes
|
No
|
1
|
Subsurface gravel wetland
|
90
|
No
|
No
|
1
|
Wet pond
|
50-90
|
Yes
|
No
|
N/A
|
NOTES to Tables 1, 2, and 3:
| |
(a)
|
Subject to the applicable contributory drainage area limitation specified at § 130-76D(15)(b);
|
(b)
|
Designed to infiltrate into the subsoil;
|
(c)
|
Designed with underdrains;
|
(d)
|
Designed to maintain at least a ten-foot wide area of native
vegetation along at least 50% of the shoreline and to include a stormwater
runoff retention component designed to capture stormwater runoff for
beneficial reuse, such as irrigation;
|
(e)
|
Designed with a slope of less than 2%;
|
(f)
|
Designed with a slope of equal to or greater than 2%;
|
(g)
|
Manufactured treatment devices that meet the definition of "green infrastructure" at § 130-76B;
|
(h)
|
Manufactured treatment devices that do not meet the definition of "green infrastructure" at § 130-76D.
|
(7)
An alternative stormwater management measure, alternative removal rate, and/or alternative method to calculate the removal rate may be used if the design engineer demonstrates the capability of the proposed alternative stormwater management measure and/or the validity of the alternative rate or method to the municipality. A copy of any approved alternative stormwater management measure, alternative removal rate, and/or alternative method to calculate the removal rate shall be provided to the Department in accordance with § 130-76F. Alternative stormwater management measures may be used to satisfy the requirements at § 130-76D(15) only if the measures meet the definition of "green infrastructure" at § 130-76B. Alternative stormwater management measures that function in a similar manner to a BMP listed at § 130-76D(15)(b) are subject to the contributory drainage area limitation specified at § 130-76D(15)(b) for that similarly functioning BMP. Alternative stormwater management measures approved in accordance with this subsection that do not function in a similar manner to any BMP listed at § 130-76D(15)(b) shall have a contributory drainage area less than or equal to 2.5 acres, except for alternative stormwater management measures that function similarly to cisterns, grass swales, green roofs, standard constructed wetlands, vegetative filter strips, and wet ponds, which are not subject to a contributory drainage area limitation. Alternative measures that function similarly to standard constructed wetlands or wet ponds shall not be used for compliance with the stormwater runoff quality standard unless a variance in accordance with N.J.A.C. 7:8-4.6 or a waiver from strict compliance in accordance with § 130-76D(4) is granted from § 130-76D(15).
(8)
Whenever the stormwater management design includes one or more BMPs
that will infiltrate stormwater into subsoil, the design engineer
shall assess the hydraulic impact on the groundwater table and design
the site, so as to avoid adverse hydraulic impacts. Potential adverse
hydraulic impacts include, but are not limited to, exacerbating a
naturally or seasonally high water table, so as to cause surficial
ponding, flooding of basements, or interference with the proper operation
of subsurface sewage disposal systems or other subsurface structures
within the zone of influence of the groundwater mound, or interference
with the proper functioning of the stormwater management measure itself.
(9)
Design standards for stormwater management measures are as follows:
(a)
Stormwater management measures shall be designed to take into
account the existing site conditions, including, but not limited to,
environmentally critical areas; wetlands; flood-prone areas; slopes;
depth to seasonal high water table; soil type, permeability, and texture;
drainage area and drainage patterns; and the presence of solution-prone
carbonate rocks (limestone);
(b)
Stormwater management measures shall be designed to minimize maintenance, facilitate maintenance and repairs, and ensure proper functioning. Trash racks shall be installed at the intake to the outlet structure, as appropriate, and shall have parallel bars with one-inch spacing between the bars to the elevation of the water quality design storm. For elevations higher than the water quality design storm, the parallel bars at the outlet structure shall be spaced no greater than one-third the width of the diameter of the orifice or one-third the width of the weir, with a minimum spacing between bars of one inch and a maximum spacing between bars of six inches. In addition, the design of trash racks must comply with the requirements of § 130-76H(3);
(c)
Stormwater management measures shall be designed, constructed,
and installed to be strong, durable, and corrosion resistant. Measures
that are consistent with the relevant portions of the Residential
Site Improvement Standards at N.J.A.C. 5:21-7.3, 7.4, and 7.5 shall
be deemed to meet this requirement;
(d)
Stormwater management BMPs shall be designed to meet the minimum safety standards for stormwater management BMPs at § 130-76H; and
(e)
The size of the orifice at the intake to the outlet from the
stormwater management BMP shall be a minimum of 2 1/2 inches
in diameter.
(10)
Manufactured treatment devices may be used to meet the requirements of this subchapter, provided the pollutant removal rates are verified by the New Jersey Corporation for Advanced Technology and certified by the Department. Manufactured treatment devices that do not meet the definition of "green infrastructure" at § 130-76B may be used only under the circumstances described at § 130-76D(15)(b).
(11)
Any application for a new agricultural development that meets the definition of major development at § 130-76B shall be submitted to the Soil Conservation District for review and approval in accordance with the requirements at § 130-76D(15) through (18) and any applicable Soil Conservation District guidelines for stormwater runoff quantity and erosion control. For purposes of this subsection, "agricultural development" means land uses normally associated with the production of food, fiber, and livestock for sale. Such uses do not include the development of land for the processing or sale of food and the manufacture of agriculturally related products.
(12)
If there is more than one drainage area, the groundwater recharge, stormwater runoff quality, and stormwater runoff quantity standards at § 130-76D(16) through (18) shall be met in each drainage area, unless the runoff from the drainage areas converge onsite and no adverse environmental impact would occur as a result of compliance with any one or more of the individual standards being determined utilizing a weighted average of the results achieved for that individual standard across the affected drainage areas.
(13)
Any stormwater management measure authorized under the municipal
stormwater management plan or ordinance shall be reflected in a deed
notice recorded in the Office of the Ocean County Clerk.
(a)
A form of deed notice shall be submitted to the municipality for approval prior to filing. The deed notice shall contain a description of the stormwater management measure(s) used to meet the green infrastructure, groundwater recharge, stormwater runoff quality, and stormwater runoff quantity standards at § 130-76D(15) through (18) and shall identify the location of the stormwater management measure(s) in NAD 1983 State Plane New Jersey FIPS 2900 US Feet or Latitude and Longitude in decimal degrees. The deed notice shall also reference the maintenance plan required to be recorded upon the deed pursuant to § 130-76J(2)(e). Prior to the commencement of construction, proof that the above required deed notice has been filed shall be submitted to the municipality. Proof that the required information has been recorded on the deed shall be in the form of either a copy of the complete recorded document or a receipt from the clerk or other proof of recordation provided by the recording office. However, if the initial proof provided to the municipality is not a copy of the complete recorded document, a copy of the complete recorded document shall be provided to the municipality within 180 calendar days of the authorization granted by the municipality.
(14)
A stormwater management measure approved under the municipal stormwater management plan or ordinance may be altered or replaced with the approval of the municipality, if the municipality determines that the proposed alteration or replacement meets the design and performance standards pursuant to § 130-76D of this section and provides the same level of stormwater management as the previously approved stormwater management measure that is being altered or replaced. If an alteration or replacement is approved, a revised deed notice shall be submitted to the municipality for approval and subsequently recorded with the Office of the Ocean County Clerk and shall contain a description and location of the stormwater management measure, as well as reference to the maintenance plan, in accordance with Subsection D(13) above. Prior to the commencement of construction, proof that the above required deed notice has been filed shall be submitted to the municipality in accordance with Subsection D(13) above.
(15)
Green infrastructure standards.
(a)
This subsection specifies the types of green infrastructure
BMPs that may be used to satisfy the groundwater recharge, stormwater
runoff quality, and stormwater runoff quantity standards.
(b)
To satisfy the groundwater recharge and stormwater runoff quality standards at § 130-76D(16) and (17) the design engineer shall utilize green infrastructure BMPs identified in Table 1 at § 130-76D(6) and/or an alternative stormwater management measure approved in accordance with § 130-76D(7). The following green infrastructure BMPs are subject to the following maximum contributory drainage area limitations:
Best Management Practice
|
Maximum Contributory Drainage Area
|
---|---|
Dry well
|
1 acre
|
Manufactured treatment device
|
2.5 acres
|
Pervious pavement systems
|
Area of additional inflow cannot exceed three times the area
occupied by the BMP
|
Small-scale bioretention systems
|
2.5 acres
|
Small-scale infiltration basin
|
2.5 acres
|
Small-scale sand filter
|
2.5 acres
|
(c)
To satisfy the stormwater runoff quantity standards at § 130-76D(18), the design engineer shall utilize BMPs from Table 1 or from Table 2 and/or an alternative stormwater management measure approved in accordance with § 130-76D(7).
(d)
If a variance in accordance with N.J.A.C. 7:8-4.6 or a waiver from strict compliance in accordance with § 130-76D(4) is granted from the requirements of this subsection, then BMPs from Table 1, 2, or 3, and/or an alternative stormwater management measure approved in accordance with § 130-76D(7) may be used to meet the groundwater recharge, stormwater runoff quality, and stormwater runoff quantity standards at § 130-76D(16) through (18).
(e)
For separate or combined storm sewer improvement projects, such as sewer separation, undertaken by a government agency or public utility (for example, a sewerage company), the requirements of this subsection shall only apply to areas owned in fee simple by the government agency or utility, and areas within a right-of-way or easement held or controlled by the government agency or utility; the entity shall not be required to obtain additional property or property rights to fully satisfy the requirements of this subsection. Regardless of the amount of area of a separate or combined storm sewer improvement project subject to the green infrastructure requirements of this subsection, each project shall fully comply with the applicable groundwater recharge, stormwater runoff quality control, and stormwater runoff quantity standards at § 130-76D(16) through (18), unless the project is granted a waiver from strict compliance in accordance with § 130-76D(4).
(16)
Groundwater recharge standards.
(a)
This subsection contains the minimum design and performance
standards for groundwater recharge as follows.
(b)
The design engineer shall, using the assumptions and factors for stormwater runoff and groundwater recharge calculations at § 130-76E, either:
[1]
Demonstrate through hydrologic and hydraulic analysis that the
site and its stormwater management measures maintain 100% of the average
annual pre-construction groundwater recharge volume for the site;
or
[2]
Demonstrate through hydrologic and hydraulic analysis that the
increase of stormwater runoff volume from pre-construction to post-construction
for the two-year storm is infiltrated.
(c)
This groundwater recharge requirement does not apply to projects within the urban redevelopment area, or to projects subject to Subsection D(16)(d) below.
(d)
The following types of stormwater shall not be recharged:
[1]
Stormwater from areas of high pollutant loading. High pollutant
loading areas are areas in industrial and commercial developments
where solvents and/or petroleum products are loaded/unloaded, stored,
or applied, areas where pesticides are loaded/unloaded or stored;
areas where hazardous materials are expected to be present in greater
than "reportable quantities" as defined by the United States Environmental
Protection Agency (EPA) at 40 CFR 302.4; areas where recharge would
be inconsistent with Department-approved remedial action work plan
or landfill closure plan and areas with high risks for spills of toxic
materials, such as gas stations and vehicle maintenance facilities;
and
[2]
Industrial stormwater exposed to source material. "Source material"
means any material(s) or machinery, located at an industrial facility,
that is directly or indirectly related to process, manufacturing or
other industrial activities, which could be a source of pollutants
in any industrial stormwater discharge to groundwater. Source materials
include, but are not limited to, raw materials; intermediate products;
final products; waste materials; byproducts; industrial machinery
and fuels, and lubricants, solvents, and detergents that are related
to process, manufacturing, or other industrial activities that are
exposed to stormwater.
(17)
Stormwater runoff quality standards.
(a)
This subsection contains the minimum design and performance
standards to control stormwater runoff quality impacts of major development.
Stormwater runoff quality standards are applicable when the major
development results in an increase of one-quarter acre or more of
regulated motor vehicle surface.
(b)
Stormwater management measures shall be designed to reduce the
post-construction load of total suspended solids (TSS) in stormwater
runoff generated from the water quality design storm as follows:
[1]
80% TSS removal of the anticipated load, expressed as an annual
average, shall be achieved for the stormwater runoff from the net
increase of motor vehicle surface.
[2]
If the surface is considered regulated motor vehicle surface
because the water quality treatment for an area of motor vehicle surface
that is currently receiving water quality treatment either by vegetation
or soil, by an existing stormwater management measure, or by treatment
at a wastewater treatment plant is to be modified or removed, the
project shall maintain or increase the existing TSS removal of the
anticipated load expressed as an annual average.
(c)
The requirement to reduce TSS does not apply to any stormwater
runoff in a discharge regulated under a numeric effluent limitation
for TSS imposed under the New Jersey Pollutant Discharge Elimination
System (NJPDES) rules, N.J.A.C. 7:14A, or in a discharge specifically
exempt under a NJPDES permit from this requirement. Every major development,
including any that discharge into a combined sewer system, shall comply
with Subsection 2 above, unless the major development is itself subject
to a NJPDES permit with a numeric effluent limitation for TSS or the
NJPDES permit to which the major development is subject exempts the
development from a numeric effluent limitation for TSS.
(d)
The water quality design storm is 1.25 inches of rainfall in
two hours. Water quality calculations shall take into account the
distribution of rain from the water quality design storm, as reflected
in Table 4, below. The calculation of the volume of runoff may take
into account the implementation of stormwater management measures.
Table 4 - Water Quality Design Storm Distribution
| |||||
---|---|---|---|---|---|
Time
(minutes)
|
Cumulative Rainfall
(inches)
|
Time
(minutes)
|
Cumulative Rainfall
(inches)
|
Time
(minutes)
|
Cumulative Rainfall
(inches)
|
1
|
0.00166
|
41
|
0.1728
|
81
|
1.0906
|
2
|
0.00332
|
42
|
0.1796
|
82
|
1.0972
|
3
|
0.00498
|
43
|
0.1864
|
83
|
1.1038
|
4
|
0.00664
|
44
|
0.1932
|
84
|
1.1104
|
5
|
0.00830
|
45
|
0.2000
|
85
|
1.1170
|
6
|
0.00996
|
46
|
0.2117
|
86
|
1.1236
|
7
|
0.01162
|
47
|
0.2233
|
87
|
1.1302
|
8
|
0.01328
|
48
|
0.2350
|
88
|
1.1368
|
9
|
0.01494
|
49
|
0.2466
|
89
|
1.1434
|
10
|
0.01660
|
50
|
0.2583
|
90
|
1.1500
|
11
|
0.01828
|
51
|
0.2783
|
91
|
1.1550
|
12
|
0.01996
|
52
|
0.2983
|
92
|
1.1600
|
13
|
0.02164
|
53
|
0.3183
|
93
|
1.1650
|
14
|
0.02332
|
54
|
0.3383
|
94
|
1.1700
|
15
|
0.02500
|
55
|
0.3583
|
95
|
1.1750
|
16
|
0.03000
|
56
|
0.4116
|
96
|
1.1800
|
17
|
0.03500
|
57
|
0.4650
|
97
|
1.1850
|
18
|
0.04000
|
58
|
0.5183
|
98
|
1.1900
|
19
|
0.04500
|
59
|
0.5717
|
99
|
1.1950
|
20
|
0.05000
|
60
|
0.6250
|
100
|
1.2000
|
21
|
0.05500
|
61
|
0.6783
|
101
|
1.2050
|
22
|
0.06000
|
62
|
0.7317
|
102
|
1.2100
|
23
|
0.06500
|
63
|
0.7850
|
103
|
1.2150
|
24
|
0.07000
|
64
|
0.8384
|
104
|
1.2200
|
25
|
0.07500
|
65
|
0.8917
|
105
|
1.2250
|
26
|
0.08000
|
66
|
0.9117
|
106
|
1.2267
|
27
|
0.08500
|
67
|
0.9317
|
107
|
1.2284
|
28
|
0.09000
|
68
|
0.9517
|
108
|
1.2300
|
29
|
0.09500
|
69
|
0.9717
|
109
|
1.2317
|
30
|
0.10000
|
70
|
0.9917
|
110
|
1.2334
|
31
|
0.10660
|
71
|
1.0034
|
111
|
1.2351
|
32
|
0.11320
|
72
|
1.0150
|
112
|
1.2367
|
33
|
0.11980
|
73
|
1.0267
|
113
|
1.2384
|
34
|
0.12640
|
74
|
1.0383
|
114
|
1.2400
|
35
|
0.13300
|
75
|
1.0500
|
115
|
1.2417
|
36
|
0.13960
|
76
|
1.0568
|
116
|
1.2434
|
37
|
0.14620
|
77
|
1.0636
|
117
|
1.2450
|
38
|
0.15280
|
78
|
1.0704
|
118
|
1.2467
|
39
|
0.15940
|
79
|
1.0772
|
119
|
1.2483
|
40
|
0.16600
|
80
|
1.0840
|
120
|
1.2500
|
(e)
If more than one BMP in series is necessary to achieve the required
80% TSS reduction for a site, the applicant shall utilize the following
formula to calculate TSS reduction:
R = A + B - (A x B)/100
|
Where:
| ||
R
|
=
|
total TSS percent load removal from application of both BMPs,
and
|
A
|
=
|
the TSS percent removal rate applicable to the first BMP
|
B
|
=
|
the TSS percent removal rate applicable to the second BMP.
|
(f)
Stormwater management measures shall also be designed to reduce, to the maximum extent feasible, the post-construction nutrient load of the anticipated load from the developed site in stormwater runoff generated from the water quality design storm. In achieving reduction of nutrients to the maximum extent feasible, the design of the site shall include green infrastructure BMPs that optimize nutrient removal while still achieving the performance standards in § 130-76D(16) through (18).
(g)
In accordance with the definition of FW1 at N.J.A.C. 7:9B-1.4,
stormwater management measures shall be designed to prevent any increase
in stormwater runoff to waters classified as FW1.
(h)
The Flood Hazard Area Control Act Rules at N.J.A.C. 7:13-4.1(c)1
establish 300-foot riparian zones along Category One waters, as designated
in the Surface Water Quality Standards at N.J.A.C. 7:9B, and certain
upstream tributaries to Category One waters. A person shall not undertake
a major development that is located within or discharges into a 300-foot
riparian zone without prior authorization from the Department under
N.J.A.C. 7:13.
(i)
Pursuant to the Flood Hazard Area Control Act Rules at N.J.A.C.
7:13-11.2(j)3.i, runoff from the water quality design storm that is
discharged within a 300-foot riparian zone shall be treated in accordance
with this subsection to reduce the post-construction load of total
suspended solids by 95% of the anticipated load from the developed
site, expressed as an annual average.
(j)
This stormwater runoff quality standards do not apply to the
construction of one individual single-family dwelling, provided that
it is not part of a larger development or subdivision that has received
preliminary or final site plan approval prior to December 3, 2018,
and that the motor vehicle surfaces are made of permeable material(s)
such as gravel, dirt, and/or shells.
(18)
Stormwater runoff quantity standards.
(a)
This subsection contains the minimum design and performance
standards to control stormwater runoff quantity impacts of major development.
(b)
In order to control stormwater runoff quantity impacts, the design engineer shall, using the assumptions and factors for stormwater runoff calculations at § 130-76E, complete the following:
[1]
Open ended, underground infiltration systems shall be provided
to handle stormwater runoff. They shall store the difference between
the postdevelopment and the predevelopment runoff for the 100-year,
twenty-four-hour storm.
[a]
Where high water table, soil permeability or configuration
of the site make infiltration impractical, the Township may approve
a combination system or waive this requirement.
[b]
Where the soil infiltration rate is less than 0.50
inches per hour, then other methods of stormwater runoff control shall
be used.
[c]
Where a combination system is permitted, it should
be designed in accordance with the New Jersey Stormwater Best Management
Practices Manual. In designing the combination stormwater management
system for a particular project, the existing physical site conditions
shall be carefully considered. Slopes, depth to seasonal high water
table relative to proposed grades, soil type, texture and permeability
of the watershed area and the site are all critical to the selection
of a suitable combination of stormwater management techniques.
[d]
Where a combination system is used, it shall be
designed to provide nonpoint source pollutant removal efficiencies
equivalent to the underground system when evaluated in accordance
with the New Jersey Stormwater Best Management Practices Manual.
[e]
Where detention is permitted by this section, it
shall be designed to store the difference between the postdevelopment
runoff and the predevelopment runoff, less the amount infiltrated
by the underground system and any appropriate credits for percolation
and infiltration associated with any other measures employed in the
system and the postpeak percolation credit. Detention and rate of
discharge control shall not be required on any site where the discharge
will be to tidal waters which includes:
[i]
All water bodies named on the U.S. Geological Survey
7.5 feet topographic maps as "bays," "canals," "coves," "guts," "harbors,"
"inlets," "sounds," "thoroughfares," "channels."
[ii]
Any man-made lagoons and canals discharging into
the water bodies listed above.
[iii]
All sections of the intercoastal waterway.
[iv]
All watercourses not specifically identified in
Subsection § 130-76D(18)(b)[1][e][i] through [iii] above
that flow into the tidal water bodies listed above, upstream to the
first bridge or culvert or upstream to the point where 100-year design
flood exceeds the 100-year tidal elevation, whichever is closest to
the mouth.
[f]
The stormwater management system, whether subsurface,
surface, or a combination thereof, shall be designed to fully contain
the design storm or to infiltrate it as required by this section.
All stormwater management systems shall be designed and maintained
such that all runoff will be recharged and/or discharged within 72
hours of the end of the storm event.
[g]
Discharge of runoff into lakes, ponds, reservoirs
and wetlands is discouraged as these sites have severely limited ability
to flush pollutants, owing to limited fresh water flow and lack of
tidal inundation.
[h]
Discharge, where required, shall be designed to
ensure stability of the stream or other body of water into which discharge
is made at a rate discharge calculated for the full 100-year, twenty-four-hour
storm, without taking credit for amounts infiltrated, in order to
limit the potential for downstream erosion.
[i]
The construction of any facility utilized to control
on-site runoff or drainage shall be designed to create a natural and
aesthetically pleasing environment. Plants and soil native to the
area shall be used for landscaping, to the maximum extent feasible.
Special preference should be given to those species of trees and plants
which have known pollutant-removal abilities. When other ornamental
plants are used, they shall be types compatible with the natural environment.
[j]
Where depth to groundwater or other physical conditions
preclude the use of subsurface or surface infiltration and recharge
as required by this section, then the applicant may request an exception.
Any such request for an exception shall be accompanied by an engineering
report explaining in detail why an exception is required and including
all of the information required by this section which demonstrates
the maximum feasible degree of compliance with these requirements.
[k]
Subsurface infiltration systems shall be designed
and constructed in accordance with the following requirements:
[i]
All inlets from which collected runoff is conveyed
to a subsurface infiltration system shall be equipped with oil/grease
and sediment separators designed in accordance with the standard detail,
which is Figure 8, Basin with trap when required, to this chapter.[2]
[2]
Editor's Note: Said figure is included as an attachment to this chapter.
[ii]
All subsurface infiltration systems shall conform
to the detail for trench recharge systems, which is Figure 9 to this
chapter,[3] and shall conform to the following requirements:
[A]
Filter material shall cover the subsurface infiltration
systems and extend the full width of the trench or bed, shall not
be less than 12 inches deep beneath the bottom of the distribution
line and shall extend at least six inches above the top of the line.
The filter material shall be washed gravel, crushed stone, slag or
clean bank-run gravel ranging in size from 1 1/2 inches to 2 1/2
inches; free of fines, dust, ashes or clay. If used in the calculations
of storage capacity, the void volume of the stone shall be considered
as 40%. The filter material shall be installed within an envelope
of filter fabric of such mesh designed to inhibit migration of fines
through the fabric. The fabric shall be installed along the sides
and top of the trench. Fabric is not required on the bottom of the
trench.
[B]
Perforated pipe shall be constructed true to line
and grade with open joints or perforations, except that at least one
tight joint at each bend or other fitting shall be provided to prevent
slippage. Bell-and-spigot pipe shall be laid with one-half-inch open
joints at two-foot intervals, and the bottom of each joint shall contain
a minimum of cement mortar to maintain an even flow line. For single-wall
pipe only, perforated pipe shall be wrapped with filter fabric such
as mesh design to inhibit migration of fines through the fabric and
into the filter material.
[C]
Perforated pipe shall not be laid at depths less
then 24 inches below finished grade. The bottom of the trench may
be deepened to within two feet of the seasonal high-water tables or
bedrock.
[D]
Excavation for disposal beds or trenches may be
made by machinery, provided that the adjacent soil will not be compacted.
No excavation machinery shall be permitted in the excavation. When
an excavation is carried below the required depth, it shall be brought
up to the proper elevation with filter material, as specified in this
standard.
[E]
The subsurface infiltration system shall be designed
to provide a minimum three-foot separation between the bottom of the
system and the seasonal high water table. There may be a lesser separation
when it is demonstrated that the separation, either due to soil conditions
or when considered in combination with other stormwater management
techniques, is adequate to protect groundwater quality.
[F]
Subsurface infiltration systems shall not be constructed
over impervious ground formations where such formations are less than
10 feet below the bottom elevation of the filter material of the subsurface
infiltration system.
[G]
Subsurface infiltration systems shall not be built
up by fill to more than two feet, unless an adequate grading plan
has been approved. When subsurface infiltration systems are built
up by fill to a depth exceeding two feet, the area of such fill shall
extend at least 20 feet beyond the limits of subsurface infiltration
systems, and the fill shall be of earth having a percolation value
approximately equal to that of the ground over which the fill is placed.
The percolation rates used for the design of a system infill shall
be the volume found in the ground over which the fill is placed.
[H]
When perforated pipe must be laid with changes
in either horizontal or vertical alignment, manholes must be installed
at each changed alignment.
[I]
The percolating area of subsurface infiltration
systems shall be considered as the total side area of the system in
square feet, except that any section of trench containing pipe laid
with tight joints other then fittings as required in this section
shall not be considered in determining the percolating areas. Bottom
or top areas shall not be included.
[J]
Catch basin inlets or manholes shall be constructed
at the end of each subsurface infiltration system and at intervals
not to exceed 600 feet. Catch basins shall be perforated bottoms or
sumps.
[K]
Precast concrete leaching pits are permitted for
use as subsurface infiltration systems in site plans. When used, each
pit shall include a manhole cover and frame to permit access.
[L]
The overflow structure in the terminus manhole
shall be removable to facilitate maintenance.
[3]
Editor's Note: Said figure is included as an attachment to this chapter.
(c)
Where the Township has either approved a combination system or waived the underground infiltration system requirement as set forth in § 130-76D(18)(b) in order to control stormwater runoff quantity impacts, the design engineer shall, using the assumptions and factors for stormwater runoff calculations set forth in Subsection E, complete one of the following:
[1]
Demonstrate through hydrologic and hydraulic analysis that for
stormwater leaving the site, post-construction runoff hydrographs
for the two-, ten-, and 100-year storm events do not exceed, at any
point in time, the pre-construction runoff hydrographs for the same
storm events;
[2]
Demonstrate through hydrologic and hydraulic analysis that there
is no increase, as compared to the pre-construction condition, in
the peak runoff rates of stormwater leaving the site for the two-,
ten- and 100-year storm events and that the increased volume or change
in timing of stormwater runoff will not increase flood damage at or
downstream of the site. This analysis shall include the analysis of
impacts of existing land uses and projected land uses assuming full
development under existing zoning and land use ordinances in the drainage
area;
[3]
Design stormwater management measures so that the post-construction
peak runoff rates for the two-, ten- and 100-year storm events are
50%, 75% and 80%, respectively, of the pre-construction peak runoff
rates. The percentages apply only to the post-construction stormwater
runoff that is attributable to the portion of the site on which the
proposed development or project is to be constructed;
[4]
In tidal flood hazard areas, stormwater runoff quantity analysis
in accordance with Subsection D(18)(c)[i], [ii] and [iii] above is
required unless the design engineer demonstrates through hydrologic
and hydraulic analysis that the increased volume, change in timing,
or increased rate of the stormwater runoff, or any combination of
the three will not result in additional flood damage below the point
of discharge of the major development. No analysis is required if
the stormwater is discharged directly into any ocean, bay, inlet,
or the reach of any watercourse between its confluence with an ocean,
bay, or inlet and downstream of the first water control structure;
[5]
Design of wet ponds as a stormwater management measure shall
establish a complete ecosystem capable of supporting a healthy aquatic
habitat.
(d)
Any application for a new agricultural development that meets the definition of major development at Subsection B shall be submitted to the appropriate soil conservation district for review and approval in accordance with the requirements of this section and any applicable soil conservation district guidelines for stormwater runoff quantity and erosion control. For the purposes of this section, "agricultural development" means land uses normally associated with the production of food, fiber and livestock for sale. Such uses do not include the development of land for the processing or sale of food and the manufacturing of agriculturally related products.
(e)
The stormwater runoff quantity standards shall be applied at
the site's boundary to each abutting lot, roadway, watercourse, or
receiving storm sewer system.
E.
Calculation of stormwater runoff and groundwater recharge:
(1)
Stormwater runoff shall be calculated in accordance with the following:
(a)
The design engineer shall calculate runoff using one of the
following methods:
[1]
The USDA Natural Resources Conservation Service (NRCS) methodology, including the NRCS Runoff Equation and Dimensionless Unit Hydrograph, as described in Chapters 7, 9, 10, 15 and 16 Part 630, Hydrology National Engineering Handbook, incorporated herein by reference as amended and supplemented. This methodology is additionally described in Technical Release 55, Urban Hydrology for Small Watersheds (TR-55), dated June 1986, incorporated herein by reference as amended and supplemented. Information regarding the methodology is available from the Natural Resources Conservation Service website at: https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb104 4171.pdf, or at United States Department of Agriculture Natural Resources Conservation Service, 220 Davison Avenue, Somerset, New Jersey 08873; or
[2]
The Rational Method for peak flow and the Modified Rational
Method for hydrograph computations. The rational and modified rational
methods are described in "Appendix A-9 Modified Rational Method" in
the Standards for Soil Erosion and Sediment Control in New Jersey,
January 2014. This document is available from the State Soil Conservation
Committee or any of the Soil Conservation Districts listed at N.J.A.C.
2:90-1.3(a)3. The location, address, and telephone number for each
Soil Conservation District is available from the State Soil Conservation
Committee, PO Box 330, Trenton, New Jersey 08625. The document is
also available at: http://www.nj.gov/agriculture/divisions/anr/pdf/2014NJSoilErosionC
ontrolStandardsComplete.pdf.
[3]
For the purpose of calculating runoff coefficients and groundwater recharge, there is a presumption that the pre-construction condition of a site or portion thereof is a wooded land use with good hydrologic condition. The term "runoff coefficient" applies to both the NRCS methodology above at § 130-76E(1)(a)[1] and the Rational and Modified Rational Methods at § 130-76E(1)(a)[2]. A runoff coefficient or a groundwater recharge land cover for an existing condition may be used on all or a portion of the site if the design engineer verifies that the hydrologic condition has existed on the site or portion of the site for at least five years without interruption prior to the time of application. If more than one land cover has existed on the site during the five years immediately prior to the time of application, the land cover with the lowest runoff potential shall be used for the computations. In addition, there is the presumption that the site is in good hydrologic condition (if the land use type is pasture, lawn, or park), with good cover (if the land use type is woods), or with good hydrologic condition and conservation treatment (if the land use type is cultivation).
[4]
In computing pre-construction stormwater runoff, the design
engineer shall account for all significant land features and structures,
such as ponds, wetlands, depressions, hedgerows, or culverts, that
may reduce pre-construction stormwater runoff rates and volumes.
[5]
In computing stormwater runoff from all design storms, the design
engineer shall consider the relative stormwater runoff rates and/or
volumes of pervious and impervious surfaces separately to accurately
compute the rates and volume of stormwater runoff from the site. To
calculate runoff from unconnected impervious cover, urban impervious
area modifications as described in the NRCS Technical Release 55,
Urban Hydrology for Small Watersheds, or other methods may be employed.
[6]
If the invert of the outlet structure of a stormwater management
measure is below the flood hazard design flood elevation as defined
at N.J.A.C. 7:13, the design engineer shall take into account the
effects of tailwater in the design of structural stormwater management
measures.
(2)
Groundwater recharge may be calculated in accordance with the following:
(a)
The New Jersey Geological Survey Report GSR-32, A Method for
Evaluating Groundwater-Recharge Areas in New Jersey, incorporated
herein by reference as amended and supplemented. Information regarding
the methodology is available from the New Jersey Stormwater Best Management
Practices Manual; at the New Jersey Geological Survey website at:
https://www.nj.gov/dep/njgs/pricelst/gsreport/gsr32.pdf, or at New
Jersey Geological and Water Survey, 29 Arctic Parkway, PO Box 420
Mail Code 29-01, Trenton, New Jersey 08625-0420.
F.
Sources for technical guidance:
(1)
Technical guidance for stormwater management measures can be found
in the documents listed below, which are available to download from
the Department's website at: http://www.nj.gov/dep/stormwater/bmp_manual2.htm.
(2)
Guidelines for stormwater management measures are contained in the
New Jersey Stormwater Best Management Practices Manual, as amended
and supplemented. Information is provided on stormwater management
measures such as, but not limited to, those listed in Tables 1, 2,
and 3.
(3)
Additional maintenance guidance is available on the Department's
website at: https://www.njstormwater.org/maintenance_guidance.htm.
(4)
Submissions required for review by the Department should be mailed
to: The Division of Water Quality, New Jersey Department of Environmental
Protection, Mail Code 401-02B, PO Box 420, Trenton, New Jersey 08625-0420.
G.
Solids and floatable materials control standards:
(1)
Site design features identified under § 130-76D(6) above, or alternative designs in accordance with § 130-76D(7) 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 paragraph, "solid and floatable materials" means sediment, debris, trash, and other floating, suspended, or settleable solids. For exemptions to this standard see § 130-76G(1)(b) 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 inches 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 E(1)(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
[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.
H.
Safety standards for stormwater management basins:
(1)
This section sets forth requirements to protect public safety through
the proper design and operation of stormwater management BMPs. This
section applies to any new stormwater management BMP.
(2)
The provisions of this section are not intended to preempt more stringent municipal or county safety requirements for new or existing stormwater management BMPs. Municipal and county stormwater management plans and ordinances may, pursuant to their authority, require existing stormwater management BMPs to be retrofitted to meet one or more of the safety standards in § 130-76H(3)(a) through (c) for trash racks, overflow grates, and escape provisions at outlet structures.
(3)
Requirements for trash racks, overflow grates and escape provisions.
(a)
A trash rack is a device designed to catch trash and debris
and prevent the clogging of outlet structures. Trash racks shall be
installed at the intake to the outlet from the stormwater management
BMP to ensure proper functioning of the BMP outlets in accordance
with the following:
[1]
The trash rack shall have parallel bars, with no greater than
six-inch spacing between the bars;
[2]
The trash rack shall be designed so as not to adversely affect
the hydraulic performance of the outlet pipe or structure;
[3]
The average velocity of flow through a clean trash rack is not
to exceed 2.5 feet per second under the full range of stage and discharge.
Velocity is to be computed on the basis of the net area of opening
through the rack; and
[4]
The trash rack shall be constructed of rigid, durable, and corrosion-resistant
material and designed to withstand a perpendicular live loading of
300 pounds per square foot.
(b)
An overflow grate is designed to prevent obstruction of the
overflow structure. If an outlet structure has an overflow grate,
such grate shall meet the following requirements:
[1]
The overflow grate shall be secured to the outlet structure
but removable for emergencies and maintenance.
[2]
The overflow grate spacing shall be no less than two inches
across the smallest dimension.
[3]
The overflow grate shall be constructed and installed to be
rigid, durable, and corrosion-resistant, and shall be designed to
withstand a perpendicular live loading of 300 pounds per square foot.
(c)
Stormwater management BMPs shall include escape provisions as
follows:
[1]
If a stormwater management BMP has an outlet structure, escape provisions shall be incorporated in or on the structure. Escape provisions include the installation of permanent ladders, steps, rungs, or other features that provide easily accessible means of egress from stormwater management BMPs. With the prior approval of the municipality pursuant to § 130-76H(3) a free-standing outlet structure may be exempted from this requirement;
[2]
Safety ledges shall be constructed on the slopes of all new stormwater management BMPs having a permanent pool of water deeper than 2 1/2 feet. Safety ledges shall be comprised of two steps. Each step shall be four to six feet in width. One step shall be located approximately 2 1/2 feet below the permanent water surface, and the second step shall be located one to 1 1/2 feet above the permanent water surface. See § 130-76H(5) for an illustration of safety ledges in a stormwater management BMP; and
[3]
In new stormwater management BMPs, the maximum interior slope
for an earthen dam, embankment, or berm shall not be steeper than
three horizontal to one vertical.
(4)
Variance or exemption from safety standard.
(a)
A variance or exemption from the safety standards for stormwater
management BMPs may be granted only upon a written finding by the
municipality that the variance or exemption will not constitute a
threat to public safety.
I.
Requirements for a site development stormwater plan:
(1)
Submission of site development stormwater plan.
(a)
Whenever an applicant seeks municipal approval of a development subject to this section, the applicant shall submit all of the required components of the checklist for the site development stormwater plan at § 130-76I(3) below as part of the submission of the application for approval.
(b)
The applicant shall demonstrate that the project meets the standards
set forth in this section.
(c)
The applicant shall submit five copies of the materials listed in the checklist for site development stormwater plans in accordance with § 130-76I(3) of this section.
(2)
Site development stormwater plan approval. The applicant's site development
project shall be reviewed as a part of the review process by the municipal
board or official from which municipal approval is sought. That municipal
board or official shall consult the municipality's review engineer
to determine if all of the checklist requirements have been satisfied
and to determine if the project meets the standards set forth in this
section.
(3)
Submission of site development stormwater plan. The following information
shall be required:
(a)
Topographic base map. The reviewing engineer may require upstream
tributary drainage system information as necessary. It is recommended
that the topographic base map of the site be submitted which extends
a minimum of 200 feet beyond the limits of the proposed development,
at a scale of one inch equals 200 feet or greater, showing two-foot
contour intervals. The map as appropriate may indicate the following:
existing surface water drainage, shorelines, steep slopes, soils,
erodible soils, perennial or intermittent streams that drain into
or upstream of the Category One waters, wetlands and floodplains along
with their appropriate buffer strips, marshlands and other wetlands,
pervious or vegetative surfaces, existing man-made structures, roads,
bearing and distances of property lines, and significant natural and
man-made features not otherwise shown.
(b)
Environmental site analysis. A written and graphic description
of the natural and man-made features of the site and its surroundings
should be submitted. This description should include a discussion
of soil conditions, slopes, wetlands, waterways and vegetation on
the site. Particular attention should be given to unique, unusual,
or environmentally sensitive features and to those that provide particular
opportunities or constraints for development.
(c)
Project description and site plans. A map (or maps) at the scale
of the topographical base map indicating the location of existing
and proposed buildings roads, parking areas, utilities, structural
facilities for stormwater management and sediment control, and other
permanent structures. The map(s) shall also clearly show areas where
alterations will occur in the natural terrain and cover, including
lawns and other landscaping, and seasonal high groundwater elevations.
A written description of the site plan and justification for proposed
changes in natural conditions shall also be provided.
(d)
Land use planning and source control plan. This plan shall provide a demonstration of how the goals and standards of § 130-76C through D are being met. The focus of this plan shall be to describe how the site is being developed to meet the objective of controlling groundwater recharge, stormwater quality and stormwater quantity problems at the source by land management and source controls whenever possible.
(e)
Stormwater management facilities map. The following information,
illustrated on a map of the same scale as the topographic base map,
shall be included:
[1]
Total area to be disturbed, paved or built upon, proposed surface
contours, land area to be occupied by the stormwater management facilities
and the type of vegetation thereon, and details of the proposed plan
to control and dispose of stormwater.
[2]
Details of all stormwater management facility designs, during
and after construction, including discharge provisions, discharge
capacity for each outlet at different levels of detention and emergency
spillway provisions with maximum discharge capacity of each spillway.
(f)
Calculations.
[1]
Comprehensive hydrologic and hydraulic design calculations for the pre-development and post-development conditions for the design storms specified in § 130-76D of this section.
[2]
When the proposed stormwater management control measures depend
on the hydrologic properties of soils or require certain separation
from the seasonal high water table, then a soils report shall be submitted.
The soils report shall be based on onsite boring logs or soil pit
profiles. The number and location of required soil borings or soil
pits shall be determined based on what is needed to determine the
suitability and distribution of soils present at the location of the
control measure.
(g)
Maintenance and repair plan. The design and planning of the stormwater management facility shall meet the maintenance requirements of § 130-76J.
(h)
Waiver from submission requirements. The municipal official or board reviewing an application under this section may, in consultation with the municipality's review engineer, waive submission of any of the requirements in § 130-76I(3)(a) through § 130-76I(3)(f) of this section when it can be demonstrated that the information requested is impossible to obtain or it would create a hardship on the applicant to obtain and its absence will not materially affect the review process.
J.
Maintenance and repair.
(1)
Applicability. Projects subject to review as in § 130-76A(3) of this section shall comply with the requirements of § 130-76J(2) and § 130-76J(3).
(2)
General maintenance.
(a)
The design engineer shall prepare a maintenance plan for the
stormwater management measures incorporated into the design of a major
development.
(b)
The maintenance plan shall contain specific preventative maintenance
tasks and schedules; cost estimates, including estimated cost of sediment,
debris, or trash removal; and the name, address, and telephone number
of the person or persons responsible for preventative and corrective
maintenance (including replacement). The plan shall contain information
on BMP location, design, ownership, maintenance tasks and frequencies,
and other details as specified in Chapter 8 of the NJ BMP Manual,
as well as the tasks specific to the type of BMP, as described in
the applicable chapter containing design specifics.
(c)
If the maintenance plan identifies a person other than the property
owner (for example, a developer, a public agency or homeowners' association)
as having the responsibility for maintenance, the plan shall include
documentation of such person's or entity's agreement to assume this
responsibility, or of the owner's obligation to dedicate a stormwater
management facility to such person under an applicable ordinance or
regulation.
(d)
Responsibility for maintenance shall not be assigned or transferred
to the owner or tenant of an individual property in a residential
development or project, unless such owner or tenant owns or leases
the entire residential development or project. The individual property
owner may be assigned incidental tasks, such as weeding of a green
infrastructure BMP, provided the individual agrees to assume these
tasks; however, the individual cannot be legally responsible for all
of the maintenance required.
(e)
If the party responsible for maintenance identified under § 130-76J(2)(a) above is not a public agency, the maintenance plan and any future revisions based on § 130-76J(2)(g) below shall be recorded upon the deed of record for each property on which the maintenance described in the maintenance plan must be undertaken.
(f)
Preventative and corrective maintenance shall be performed to
maintain the functional parameters (storage volume, infiltration rates,
inflow/outflow capacity, etc.) of the stormwater management measure,
including, but not limited to, repairs or replacement to the structure;
removal of sediment, debris, or trash; restoration of eroded areas;
snow and ice removal; fence repair or replacement; restoration of
vegetation; and repair or replacement of nonvegetated linings.
(g)
The party responsible for maintenance identified under § 130-76J(2)(c) above shall perform all of the following requirements:
[1]
Maintain a detailed log of all preventative and corrective maintenance
for the structural stormwater management measures incorporated into
the design of the development, including a record of all inspections
and copies of all maintenance-related work orders;
[2]
Evaluate the effectiveness of the maintenance plan at least
once per year and adjust the plan and the deed as needed; and
[3]
Retain and make available, upon request by any public entity with administrative, health, environmental, or safety authority over the site, the maintenance plan and the documentation required by § 130-76J(2)(f) and (g) above.
(3)
The requirements of § 130-76J(2)(c) and (d) do not apply to stormwater management facilities that are dedicated to and accepted by the municipality or another governmental agency, subject to all applicable municipal stormwater general permit conditions, as issued by the Department.
(a)
Maintenance and inspection guidance can be found on the Department's
website at: https://www.njstormwater.org/maintenance_guidance.htm.
(4)
In the event that the stormwater management facility becomes a danger
to public safety or public health, or if it is in need of maintenance
or repair, the municipality shall so notify the responsible person
in writing. Upon receipt of that notice, the responsible person shall
have 14 days to effect maintenance and repair of the facility in a
manner that is approved by the municipal engineer or his designee.
The municipality, in its discretion, may extend the time allowed for
effecting maintenance and repair for good cause. If the responsible
person fails or refuses to perform such maintenance and repair, the
municipality or county may immediately proceed to do so and shall
bill the cost thereof to the responsible person. Nonpayment of such
bill may result in a lien on the property.
(5)
Nothing in this subsection shall preclude the municipality in which
the major development is located from requiring the posting of a performance
or maintenance guarantee in accordance with N.J.S.A. 40:55D-53.
[Added 11-20-2007 by Ord. No. 2007-108]
A.
AQUACULTURE
CERTIFICATION
COMPACTION
CONSTRUCTION
COUNTY REVIEW AGENCY
DESIGN ENGINEER
DESIGN PERMEABILITY
DEVELOPMENT
(1)
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(2)
DEVELOPMENT, MAJOR
DEVELOPMENT, MINOR
DRAINAGE AREA
ENVIRONMENTALLY CRITICAL AREA
EXCEPTION
EXTENDED DETENTION BASIN
FILTER MATERIAL
FINISHED GRADE
GRADING
GROUNDWATER
GROUNDWATER MOUNDING ANALYSIS
HEAVY EQUIPMENT
HIGH POLLUTANT LOADING AREA
IMPERVIOUS SURFACE
INFILTRATION
IN-LIEU CONTRIBUTION
INSTALL
MITIGATION
NEW JERSEY STORMWATER BEST MANAGEMENT PRACTICES MANUAL
NJDEP
NJPDES
NJPDES PERMIT
NONPOINT SOURCE (the term "NPS" shall have the same meaning
as "nonpoint source")
(1)
(2)
(3)
NONSTRUCTURAL BMP
NUTRIENT
PERMEABILITY
PERMEABLE
PERSON
PINELANDS CMP
PINELANDS COMMISSION or COMMISSION
POINT SOURCE
POLLUTANT
PROFESSIONAL ENGINEER
RECHARGE
REPLICATE
SAND
SEASONALLY HIGH WATER TABLE
SEDIMENT
SITE
SOIL
SOURCE MATERIAL
STORMWATER
STORMWATER INFILTRATION BMP
STORMWATER MANAGEMENT MEASURE
STORMWATER RUNOFF
SUBSURFACE INFILTRATION SYSTEMS
SUITABLE SOIL
SURFACE WATER
TIDAL FLOOD HAZARD AREA
TIME OF CONCENTRATION
TOTAL SUSPENDED SOLIDS
WATERS OF THE STATE
WATER TABLE
WELL
WETLANDS
WET POND
Definitions. Unless specifically defined below, words
or phrases used in this section shall be interpreted so as to give
them the meaning they have in common usage and to give this section
its most reasonable application. When used in this section, the following
terms shall have the meanings herein ascribed to them:
The propagation, rearing and subsequent harvesting of aquatic
organisms in controlled or selected environments, and their subsequent
processing, packaging and marketing, including but not limited to
activities to intervene in the rearing process to increase production
such as stocking, feeding, transplanting and providing for protection
from predators.
Either a written statement signed and sealed by a licensed
New Jersey Professional Engineer attesting that a BMP design or stormwater
management system conforms to or meets a particular set of standards
or to action taken by the Commission pursuant to N.J.A.C. 7:50-3,
N.J.A.C. 7:50-3.11 to 7:50-3.20, or N.J.A.C. 7:50-3.61 to 7:50-3.70.
Depending upon the context in which the term is used, the terms "certify"
and "certified" shall be construed accordingly.
The increase in soil bulk density caused by subjecting soil
to greater-than-normal loading. Compaction can also decrease soil
infiltration and permeability rates.
The construction, erection, reconstruction, alteration, conversion,
demolition, removal or equipping of buildings, structures or components
of a stormwater management system, including but not limited to collection
inlets, stormwater piping, swales and all other conveyance systems,
and stormwater BMPs.
Shall have the meaning as described in § 130-76, "Stormwater control."
Shall have the meaning as described in § 130-76, "Stormwater control."
The tested permeability rate with a factor of safety of two
applied to it (e.g., if the tested permeability rate of the soil is
four inches per hour, the design rate would be two inches per hour).
The change or enlargement of any use or disturbance
of any land, the performance of any building or mining operation,
the division of land into two or more parcels, and the creation or
termination of rights of access or riparian rights, including but
not limited to:
A change in type of use of a structure or land;
A reconstruction, alteration of the size, or
material change in the external appearance of a structure or land;
A material increase in the intensity of use
of land, such as an increase in the number of businesses, manufacturing
establishments, offices or dwelling units in a structure or on land;
Commencement of resource extraction or drilling
or excavation on a parcel of land;
Demolition of a structure or removal of trees;
Commencement of forestry activities;
Deposit of refuse, solid or liquid waste or
fill on a parcel of land;
In connection with the use of land, the making
of any material change in noise levels, thermal conditions, or emissions
of waste material; and
Alteration, either physically or chemically,
of a shore, bank, or floodplain, seacoast, river, stream, lake, pond,
wetlands or artificial body of water.
In the case of development on agricultural land,
i.e., lands used for an agricultural use or purpose as defined at
N.J.A.C. 7:50-2.11, "development means" 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.
Any division of land into five or more lots; any construction
or expansion of any housing development of five or more dwelling units;
any construction or expansion of any commercial or industrial use
or structure on a site of more than three acres; or any development,
grading, clearing or disturbance of an area in excess of 5,000 square
feet. "Disturbance," for the purpose of this section, is the placement
of impervious surface or exposure and/or movement of soil or bedrock
or the clearing, cutting or removal of vegetation.
All development other than major development.
Shall have the meaning as described in § 130-76, "Stormwater control."
An area or feature which is of significant environmental
value, including but not limited to stream corridors; natural heritage
priority sites; habitat of endangered or threatened animal species;
threatened or endangered plants of the Pinelands pursuant to N.J.A.C.
7:5-6.27(a); large areas of contiguous open space or upland forest;
steep slopes; and wellhead protection and groundwater recharge areas.
"Threatened and endangered habitat" constitutes habitat that is critical
for the survival of a local population of threatened and endangered
species or habitat that is identified using the Department's Landscape
Project as approved by the Department's Endangered and Nongame Species
Program, whichever is more inclusive. Threatened and endangered wildlife
shall be protected in conformance with N.J.A.C. 7:50-6.33.
The approval by the approving authority of a variance or
other material departure from strict compliance with any section,
part, phrase or provision of this section. An exception may be granted
only under certain specific, narrowly defined conditions described
herein and does not constitute a waiver of strict compliance with
any section, part, phrase or provision of the Pinelands Comprehensive
Management Plan (N.J.A.C. 7:50-1.1 et seq.).
A facility constructed through filling and/or excavation
that provides temporary storage of stormwater runoff. It has an outlet
structure that detains and attenuates runoff inflows and promotes
the settlement of pollutants. An extended detention basin is normally
designed as a multistage facility that provides runoff storage and
attenuation for both stormwater quality and quantity management. The
term "stormwater detention basin" shall have the same meaning as "extended
detention basin."
Shall have the meaning as described in § 130-76, "Stormwater control."
The elevation of the surface of the ground after completion
of final grading, either via cutting, filling, or a combination thereof.
Modification of a land slope by cutting and filling with
the native soil, or redistribution of the native soil which is present
at the site.
Water below the land surface in a zone of saturation.
A test performed to demonstrate that the groundwater below
a stormwater infiltration basin will not "mound up," encroach on the
unsaturated zone, break the surface of the ground at the infiltration
area, or downslope and create an overland flow situation.
Equipment, machinery, or vehicles that exert ground pressure
in excess of eight pounds per square inch.
An area in an industrial or commercial development site where
solvents and/or petroleum products are loaded/unloaded, stored, or
applied; where pesticides are loaded/unloaded or stored; where hazardous
materials are expected to be present in greater than "reportable quantities"
as defined by the United States Environmental Protection Agency (EPA)
at 40 CFR 302.4; where recharge would be inconsistent with NJDEP-approved
remedial action work plan or landfill closure plan; and/or where a
high risk exists for spills of toxic materials, such as gas stations
and vehicle maintenance facilities. The term "HPLA" shall have the
same meaning as "high pollutant loading area."
Shall have the meaning as described in § 130-76, "Stormwater control."
The process by which precipitation enters the soil through
its surface.
A monetary fee collected by the Township of Stafford in lieu
of requiring strict on-site compliance with the groundwater recharge,
stormwater runoff quantity and/or stormwater runoff quality standards
established in this section.
To assemble, construct, put in place, or connect components
of a stormwater management system.
Acts necessary to prevent, limit, remedy, or compensate for
conditions that may result from those cases where an applicant has
demonstrated the inability or impracticality of strict compliance
with the stormwater management requirements set forth in N.J.A.C.
7:8, in an adopted regional stormwater management plan, or in a local
ordinance which is as protective as N.J.A.C. 7:8 and an exception
from strict compliance is granted by Stafford Township and the Pinelands
Commission.
Guidance developed by the New Jersey Department of Environmental
Protection, in coordination with the New Jersey Department of Agriculture,
the New Jersey Department of Community Affairs, the New Jersey Department
of Transportation, municipal engineers, county engineers, consulting
firms, contractors, and environmental organizations, to address the
standards in the New Jersey Stormwater Management Rules, N.J.A.C.
7:8. The BMP Manual provides examples of ways to meet the standards
contained in the rule. An applicant may demonstrate that other proposed
management practices will also achieve the standards established in
the rules. The manual, and notices regarding future versions of the
manual, are available from the Division of Watershed Management, NJDEP,
P.O. Box 418, Trenton, New Jersey 08625; and on the NJDEP's website,
www.njstormwater.org. The term "New Jersey BMP Manual" shall have
the same meaning as "New Jersey Stormwater Best Management Practices
Manual."
The New Jersey Department of Environmental Protection.
The New Jersey Pollutant Discharge Elimination System as
set forth in N.J.S.A. 58:10A-1 et seq. and in N.J.A.C. 7:14A.
A permit issued by the NJDEP pursuant to the authority of
the Water Pollution Control Act, N.J.S.A. 58:10A-1 et seq., and N.J.A.C.
7:14A for a discharge of pollutants.
Any human-made or human-induced activity, factor,
or condition, other than a point source, from which pollutants are
or may be discharged;
Any human-made or human-induced activity, factor,
or condition, other than a point source, that may temporarily or permanently
change any chemical, physical, biological, or radiological characteristic
of waters of the state from what was, or is, the natural, pristine
condition of such waters or that may increase the degree of such change;
or
Any activity, factor or condition, other than
a point source, that contributes, or may contribute, to water pollution.
A stormwater management measure, strategy or combination
of strategies that reduces adverse stormwater runoff impact through
sound site planning and design. Nonstructural BMPs include such practices
as minimizing site disturbance, preserving important site features,
reducing and disconnecting impervious cover, flattening slopes, utilizing
native vegetation, minimizing turf grass lawns, maintaining natural
drainage features and characteristics and controlling stormwater runoff
and pollutants closer to the source. The term "low-impact development
technique" shall have the same meaning as "nonstructural BMP."
Shall have the meaning as described in § 130-76, "Stormwater control."
The rate at which water moves through a saturated unit area
of soil or rock material at hydraulic gradient of one, determined
as prescribed in N.J.A.C. 7:9A-6.2 (tube permeameter test), N.J.A.C.
7:9A-6.5 (pit-bailing test) or N.J.A.C. 7:9A-6.6 (piezometer test).
Alternative permeability test procedures may be accepted by the approving
authority, provided the test procedure attains saturation of surrounding
soils, accounts for hydraulic head effects on infiltration rates,
provides a permeability rate with units expressed in inches per hour
and is accompanied by a published source reference. Examples of suitable
sources include hydrogeology, geotechnical, or engineering text and
design manuals, proceedings of American Society for Testing and Materials
(ASTM) symposia, or peer-review journals. Neither a soil permeability
class rating test, as described in N.J.A.C. 7:9A-6.3, nor a percolation
test, as described in N.J.A.C. 7:9A-6.4, are acceptable tests for
establishing permeability values for the purpose of complying with
this section.
Having a permeability of one inch per hour or faster. The
terms "permeable soil," "permeable rock" and "permeable fill" shall
be construed accordingly.
Shall have the meaning as described in § 130-76, "Stormwater control."
The New Jersey Pinelands Comprehensive Management Plan (N.J.A.C.
7:50-1.1 et seq.).
The Commission created pursuant to Section 5 of the Pinelands
Protection Act, N.J.S.A. 13:18A-5.
Any discernible, confined, and discrete conveyance, including,
but not limited to, any pipe, ditch, channel, tunnel, conduit, well,
discrete fissure, container, rolling stock, concentrated animal feeding
operation, landfill leachate collection system, vessel, or other floating
craft, from which pollutants are or may be discharged. This term does
not include return flows from irrigated agriculture.
Shall have the meaning as described in § 130-76, "Stormwater control."
A person licensed to practice professional engineering in
the State of New Jersey pursuant to N.J.S.A. 45:8-27 et seq.
Shall have the meaning as described in § 130-76, "Stormwater control."
One of two or more soil samples or tests taken at the same
location (within five feet of each other) and depth, within the same
soil horizon or substratum. In the case of fill material, "replicate
tests" are tests performed on subsamples of the same bulk sample packed
to the same bulk density.
A particle size category consisting of mineral particles which are between 0.05 and 2.0 millimeters in equivalent spherical diameter. Also, a soil textural class having 85% or more of sand and a content of silt and clay such that the percentage of silt plus 1.5 times the percentage of clay does not exceed 15, as shown in Subsection H(3)(a) (USDA soil textural triangle).
The upper limit of the shallowest zone of saturation which
occurs in the soil, identified as prescribed in N.J.A.C. 7:9A-5.8.
Shall have the meaning as described in § 130-76, "Stormwater control."
Shall have the meaning as described in § 130-76, "Stormwater control."
All unconsolidated mineral and organic material of any origin
which is not a rock substratum, including sediments below the biologically
active and/or weathered zones.
Any material(s) or machinery, located at an industrial facility
that is directly or indirectly related to process, manufacturing or
other industrial activities, which could be a source of pollutants
in any industrial stormwater discharge to groundwater. Source materials
include, but are not limited to, raw materials, intermediate products,
final products, waste materials, by-products, industrial machinery,
and fuels and lubricants, solvents, and detergents that are related
to process, manufacturing, or other industrial activities that are
exposed to stormwater.
Shall have the meaning as described in § 130-76, "Stormwater control."
A basin or other facility constructed within permeable soils
that provides temporary storage of stormwater runoff. An infiltration
BMP does not normally have a structural outlet to discharge runoff
from the stormwater quality design storm. Instead, outflow from an
infiltration BMP is through the surrounding soil. The terms "infiltration
measure" and "infiltration practice" shall have the same meaning as
"stormwater infiltration basin."
Shall have the meaning as described in § 130-76, "Stormwater control."
Water flow on the surface of the ground, or in storm sewers,
resulting from precipitation.
Shall have the meaning as described in § 130-76, "Stormwater control."
Unsaturated soil, above the seasonally high water table,
which contains less than 50% by volume of coarse fragments and which
has a tested permeability rate of between one inch and 20 inches per
hour.
Any waters of the state which are not groundwater.
Shall have the meaning as described in § 130-76, "Stormwater control."
The time it takes for runoff to travel from the hydraulically
most distant point of the drainage area to the point of interest within
a watershed.
The insoluble solid matter suspended in water and stormwater
that is separable by laboratory filtration in accordance with the
procedures contained in the "Standard Methods for the Examination
of Water and Wastewater" prepared and published jointly by the American
Public Health Association, the American Water Works Association and
the Water Pollution Control Federation. The term "TSS" shall have
the same meaning as "total suspended solids."
Shall have the meaning as described in § 130-76, "Stormwater control."
The upper surface of a zone of saturation.
A bored, drilled, or driven shaft, or a dug hole, which extends
below the seasonally high water table and which has a depth which
is greater than its largest surface dimension.
Those lands which are inundated or saturated by water at
a magnitude, duration and frequency sufficient to support the growth
of hydrophytes. Wetlands include lands with poorly drained or very
poorly drained soils as designated by the National Cooperative Soils
Survey of the Soil Conservation Service of the United States Department
of Agriculture. Wetlands include coastal wetlands and inland wetlands,
including submerged lands. The "New Jersey Pinelands Commission Manual
for Identifying and Delineating Pinelands Area Wetlands: A Pinelands
Supplement to the Federal Manual for Identifying and Delineating Jurisdictional
Wetlands," dated January 1991, as amended, may be utilized in delineating
the extent of wetlands based on the definitions of "wetlands" and
"wetlands soils" contained in this section, N.J.A.C. 7:50-2.11, 7:50-6.4
and 7:50-6.5. The term "wetland" shall have the same meaning as "wetlands."
A stormwater facility constructed through filling and/or
excavation that provides both permanent and temporary storage of stormwater
runoff. It has an outlet structure that creates a permanent pool and
detains and attenuates runoff inflows and promotes the settling of
pollutants. A stormwater retention basin can also be designed as a
multistage facility that also provides extended detention for enhanced
stormwater quality design storm treatment and runoff storage and attenuation
for stormwater quantity management. The term "stormwater retention
basin" shall have the same meaning as "wet pond."
B.
Scope and purpose.
(1)
Purpose.
(a)
It is hereby determined that:
[1]
Land development projects and associated
disturbance of vegetation and soil and changes in land cover, including
increases in impervious cover, alter the hydrologic response of local
watersheds and increase stormwater runoff rates and volumes. If inadequately
or improperly managed, this stormwater runoff can deplete groundwater
resources and increase flooding, stream channel erosion, and sediment
transport and deposition.
[2]
This stormwater runoff contributes
to increased quantities of waterborne pollutants.
[3]
Increases of stormwater runoff,
soil erosion and nonpoint source pollutants have occurred in the past
as a result of land development and contribute to the degradation
of the water resources of Stafford Township.
[4]
Certain lands of the Township of
Stafford lie within the Pinelands Area, and therefore, development
in this portion of Stafford Township is subject to the requirements
of the Pinelands Protection Act (N.J.S.A. 13:18A-1 et seq.) and the
implementing regulations and minimum standards contained in the Pinelands
Comprehensive Management Plan (CMP) (N.J.A.C. 7:50-1.1 et seq.). The
purpose and intent of these regulations and standards is to promote
orderly development of the Pinelands so as to preserve and protect
the significant and unique natural, ecological, agricultural, archaeological,
historical, scenic, cultural and recreational resources of the Pinelands.
[5]
Pinelands Area resources are to
be protected in accordance with Pinelands Comprehensive Management
Plan at N.J.A.C. 7:50 et seq., New Jersey's Stormwater Management
Rules at N.J.A.C. 7:8-1.1 et seq. and New Jersey's surface water quality
antidegradation policies contained in the New Jersey Surface Water
Quality Standards at N.J.A.C. 7:9B-1.1 et seq. Permitted uses shall
maintain the ecological character and quality of the Pinelands, including
good water quality and natural rates and volumes of flow.
[6]
Increased stormwater rates and
volumes and the sediments and pollutants associated with stormwater
runoff from future development projects within the Pinelands Area
have the potential to adversely affect Stafford Township's streams
and water resources and the streams and water resources of downstream
municipalities.
[7]
Stormwater runoff, soil erosion
and nonpoint source pollution can be controlled and minimized through
the regulation of stormwater runoff from development sites.
[8]
It is in the public interest to regulate the discharge of stormwater runoff from "major development" projects, as defined in Subsection A of this section, conducted within the Pinelands Area, as provided in this section, in order to control and minimize increases in stormwater runoff rates and volumes, to maintain groundwater recharge, and to control and minimize soil erosion, stream channel erosion and nonpoint source pollution associated with stormwater runoff.
(b)
Therefore, it is the purpose of this section
to establish minimum stormwater management requirements and controls
for major development, consistent with the statewide stormwater requirements
at N.J.A.C. 7:8, the regulations and standards contained in the Pinelands
CMP, and the provisions of the adopted Master Plan and land use ordinances
of Stafford Township.
(2)
Goals and techniques.
(a)
Through this section, Stafford Township has
established the following goals for stormwater control:
[1]
To reduce flood damage, including
damage to life and property;
[2]
To minimize any increase in stormwater
runoff from new development;
[3]
To reduce soil erosion from any
development or construction project;
[4]
To assure the adequacy of existing
and proposed culverts and bridges and other in-stream structures;
[5]
To maintain groundwater recharge;
[6]
To minimize any increase in nonpoint
pollution;
[7]
To maintain the integrity of stream
channels for their biological functions, as well as for drainage;
[8]
To restore, protect, maintain and
enhance the quality of the streams and water resources of Stafford
Township and the ecological character and quality of the Pinelands
Area;
[9]
To minimize pollutants in stormwater
runoff from new and existing development in order to restore, protect,
enhance and maintain the chemical, physical and biological integrity
of the surface waters and groundwaters of Stafford Township, to protect
public health and to enhance the domestic, municipal, recreational,
industrial and other uses of water; and
[10]
To protect public safety through
the proper design and operation of stormwater management basins.
(b)
In order to achieve the goals for stormwater
control set forth in this section, the Township of Stafford has identified
the following management techniques:
[1]
Implementation of multiple stormwater
management best management practices (BMPs) may be necessary to achieve
the performance standards for stormwater runoff quantity and rate,
groundwater recharge, erosion control, and stormwater runoff quality
established through this section.
[2]
Compliance with the stormwater
runoff quantity and rate, groundwater recharge, erosion control, and
stormwater runoff quality standards established through N.J.A.C. 7:8-1.1
et seq., and this section, shall be accomplished to the maximum extent
practicable through the use of nonstructural BMPs, before relying
on structural BMPs. Nonstructural BMPs are also known as low-impact
development (LID) techniques.
[3]
Nonstructural BMPs shall include
both environmentally sensitive site design and source controls that
prevent pollutants from being placed on the site or from being exposed
to stormwater.
[4]
Source control plans shall be developed
based upon physical site conditions and the origin, nature and anticipated
quantity or amount of potential pollutants.
[5]
Structural BMPs, where necessary,
shall be integrated with nonstructural stormwater management strategies
and proper maintenance plans.
[6]
When using structural BMPs, multiple
stormwater management measures, smaller in size and distributed spatially
throughout the land development site, shall be used wherever possible
to achieve the performance standards for water quality, quantity and
groundwater recharge established through this section before relying
on a single, larger stormwater management measure to achieve these
performance standards.
(3)
Applicability. This section shall apply to:
(a)
All site plans, subdivisions and road improvement
plans for major developments occurring within the Pinelands Area that
require preliminary or final site plan, subdivision, or road improvement
plan review; and
(b)
All major development projects undertaken by
Stafford Township within the Pinelands Area shall comply with this
section.
(4)
Procedures. In addition to other development review procedures set forth in the Code of the Township of Stafford, major developments located within the Pinelands Area shall comply with the stormwater management requirements and specifications set forth in this section. New agricultural development that meets the definition of "major development" in Subsection A of this section shall be submitted to the appropriate Soil Conservation District for review and approval in accordance with the requirements of N.J.A.C. 7:8-5.4(b).
(5)
Compatibility with other permit and ordinance
requirements.
(a)
Development approvals issued for subdivisions
and site plans pursuant to this section are to be considered an integral
part of development approvals under the subdivision and site plan
review process and do not relieve the applicant of the responsibility
to secure required permits or approvals for activities regulated by
any other applicable ordinance, code, rule, regulation, statute, act
or other provision of law.
(b)
In their interpretation and application, the
provisions of this section shall be held to be the minimum requirements
for the promotion of the public health, safety, and general welfare.
This section is not intended to interfere with, abrogate, or annul
any other ordinance, rule or regulation, statute, or other provision
of law except that, where any provision of this section imposes restrictions
different from those imposed by any other ordinance, rule or regulation,
or other provision of law, the more restrictive or stringent provisions
or higher standards shall control.
(c)
In the event that a regional stormwater management
plan(s) is prepared and formally adopted pursuant to N.J.A.C. 7:8-1.1
et seq. for any drainage area(s) or watershed(s) of which Stafford
Township is a part, the stormwater provisions of such a plan(s) shall
be adopted by Stafford Township within one year of the adoption of
a regional stormwater management plan (RSWMP) as an amendment to an
areawide water quality management plan. Local ordinances proposed
to implement the RSWMP shall be submitted to the Commission for certification
within six months of the adoption of the RSWMP per N.J.A.C. 7:8 and
the Pinelands CMP (N.J.A.C. 7:50.)
C.
Requirements for a site development stormwater plan.
(1)
Submission of site development stormwater plan.
(a)
Whenever an applicant seeks municipal approval of a site development that is subject to this section, the applicant shall submit all of the required components of the checklist for the site development stormwater plan at Subsection C(3) below as part of the applicant's application for subdivision or site plan approval. In addition, the applicant shall refer to the Township of Stafford Code Chapter 130, "Land Use and Development" checklists for additional submission requirements for subdivision or site plan approval. These required components are in addition to any other information required under any provisions of the Pinelands Commission pursuant to N.J.A.C. 7:50-1.1 et seq.
(b)
The applicant shall demonstrate that the site
development project meets the standards set forth in this section.
(2)
Site development stormwater plan approval. The
applicant's site development stormwater plan shall be reviewed as
a part of the subdivision or site plan review process by the municipal
board or official from which municipal approval is sought. That municipal
board or official shall consult the engineer retained by the Planning
Board and/or Zoning Board (as appropriate) to determine if all of
the checklist requirements have been satisfied and to determine if
the project meets the standards set forth in this section.
(3)
Checklist requirements. The following information
shall be required:
(a)
Topographic base map. The applicant shall submit
a topographic base map of the site which extends a minimum of 300
feet beyond the limits of the proposed development, at a scale of
one inch equals 200 feet or greater, showing one-foot contour intervals.
The map shall indicate the following: existing surface water drainage,
shorelines, steep slopes, soils, highly erodible soils, perennial
or intermittent streams that drain into or upstream of any Category
One or Pinelands waters, wetlands and floodplains, along with their
appropriate buffer strips, marshlands and other wetlands, pervious
or vegetative surfaces, existing surface and subsurface human-made
structures, roads, bearing and distances of property lines, and significant
natural and man-made features not otherwise shown. Stafford Township
or the Pinelands Commission may require upstream tributary drainage
system information as necessary.
(b)
Environmental site analysis.
[1]
The applicant shall submit a written
description along with the drawings of the natural and human-made
features of the site and its environs. This description should include:
[a]
A discussion of environmentally
critical areas, soil conditions, slopes, wetlands, waterways and vegetation
on the site. Particular attention should be given to unique, unusual
or environmentally sensitive features and to those that provide particular
opportunities for or constraints on development; and
[b]
Detailed soil and other environmental
conditions on the portion of the site proposed for installation of
any stormwater BMPs, including, at a minimum: soils report based on
on-site soil tests; locations and spot elevations in plan view of
test pits and permeability tests; permeability test data and calculations;
and any other required soil data (e.g., mounding analyses results)
correlated with location and elevation of each test site; cross-section
of proposed stormwater BMP with side-by-side depiction of soil profile
drawn to scale and seasonal high water table elevation identified;
and any other information necessary to demonstrate the suitability
of the specific proposed structural and nonstructural stormwater management
measures relative to the environmental conditions on the portion(s)
of the site proposed for implementation of those measures.
(c)
Project description and site plan(s). The applicant shall submit a map, or maps, at the scale of the topographic base map, indicating the location of existing and proposed buildings, roads, parking areas, utilities, structural facilities for stormwater management and sediment control, and other permanent structures. The map(s) shall also clearly show areas where alterations will occur in the natural terrain and cover, including lawns and other landscaping, and seasonal high groundwater elevations. A written description of the site plan and justification for proposed changes in natural conditions shall also be provided. Additional requirements are listed in Chapter 130 of the Township of Stafford Code.
(d)
Land use planning and source control plan.
[1]
The applicant shall submit a detailed land use planning and source control plan which provides a description of how the site will be developed to meet the erosion control, groundwater recharge and stormwater runoff quantity and quality standards at Subsection E through use of nonstructural or low-impact development techniques and source controls to the maximum extent practicable before relying on structural BMPs. The land use planning and source control plan shall include a detailed narrative and associated illustrative maps and/or plans that specifically address how each of the following nine nonstructural strategies identified in Subchapter 5 of the NJDEP Stormwater Management Rules (N.J.A.C. 7:8-5.1 et seq.) and set forth below Subsection C(3)(d)[1][a] through [i] will be implemented to the maximum extent practicable to meet the standards at Subsection E of this section on the site. If one or more of the nine nonstructural strategies will not be implemented on the site, the applicant shall provide a detailed rationale establishing a basis for the contention that use of the strategy is not practicable on the site.
[a]
Protect areas that provide water
quality benefits or areas particularly susceptible to erosion and
sediment loss;
[b]
Minimize impervious surfaces and
break up or disconnect the flow of runoff over impervious surfaces;
[c]
Maximize the protection of natural
drainage features and vegetation;
[d]
Minimize the decrease in the predevelopment
"time of concentration";
[e]
Minimize land disturbance, including
clearing and grading;
[f]
Minimize soil compaction and all
other soil disturbance;
[g]
Provide low-maintenance landscaping
that provides for the retention and planting of native plants and
minimizes the use of lawns, fertilizers and pesticides, in accordance
with N.J.A.C. 7:50-6.24;
[h]
Provide vegetated open-channel
conveyance systems discharging into and through stable vegetated areas;
and
[i]
Provide other source controls to
prevent or minimize the use or exposure of pollutants at the site
in order to prevent or minimize the release of those pollutants into
stormwater runoff. These source controls shall include, but not be
limited to:
[i]
Site design features that help
to prevent accumulation of trash and debris in drainage systems;
[ii]
Site design features that help
to prevent discharge of trash and debris from drainage systems;
[iii]
Site design features that help
to prevent and/or contain spills or other harmful accumulations of
pollutants at industrial or commercial developments; and
[iv]
Applying fertilizer in accordance
with the requirements established under the Soil Erosion and Sediment
Control Act, N.J.S.A. 4:24-39 et seq., and implementing rules when
establishing vegetation after land disturbance.
[2]
For sites where stormwater will be generated from high pollutant loading areas or where stormwater will be exposed to source material as defined in Subsection A of this section, the applicant shall also demonstrate in the land use planning and source control plan that the requirements of Subsection E have been met.
[3]
The use of nonstructural strategies to meet the performance standards in Subsection E of this section is not required for development sites creating less than one acre of disturbance. However, each application for major development and any other application where Stafford Township otherwise requires a landscaping plan shall contain a landscaping or revegetation plan in accordance with the CMP standards located at N.J.A.C. 7:50-6.24(c). In addition, the applicant shall demonstrate that, at a minimum, existing trees and vegetation on the development site will be preserved and protected according to the minimum standards established by provisions of the Stafford Township Land Use Ordinance or Zoning Ordinance[1] or by conditions of zoning or variance approval.
(e)
Stormwater Management Facilities Map. The applicant
shall submit a map at the same scale as the topographic base map depicting
the following information:
[1]
The total area to be disturbed,
paved and/or built upon, proposed surface contours, land area to be
occupied by the stormwater management facilities and the type of vegetation
thereon, and details of the proposed plan to manage and dispose of
stormwater; and
[2]
Details of all stormwater management
facility designs during and after construction, including discharge
provisions, discharge capacity for each outlet at different levels
of detention (if applicable), and emergency spillway provisions with
maximum discharge capacity of each spillway.
(f)
Calculations (groundwater recharge and stormwater runoff rate, volume and quality). The applicant shall submit comprehensive hydrologic and hydraulic design calculations for the predevelopment and postdevelopment conditions for the design storms specified in Subsection D. The standards for groundwater recharge and stormwater runoff rate, volume and quality required by Subsection E shall be met using the methods, calculations and assumptions provided in Subsection D.
(g)
Inspection, maintenance and repair plan. The applicant shall submit a detailed plan describing how the proposed stormwater management measure(s) shall meet the maintenance and repair requirements of Subsection G of this section. Said plan shall include, at a minimum, the following elements:
[1]
The frequency with which inspections
will be made;
[2]
The specific maintenance tasks
and requirements for each proposed structural and nonstructural BMP;
[3]
The name, address and telephone
number for the entity responsible for implementation of the maintenance
plan;
[4]
The reporting requirements; and
[5]
Copies of the inspection and maintenance
reporting sheets.
(h)
Exception from submission requirements. An exception may be granted from submission of any of these required components [except Subsection C(3)(g) above, Inspection, maintenance, and repair plan] if its absence will not materially affect the review process. However, items required pursuant to the application requirements in the Pinelands CMP [N.J.A.C. 7:50-4.2(b)] shall be submitted to the N.J. Pinelands Commission unless the Executive Director waives or modifies the application requirements.
D.
Methodologies for calculation of stormwater runoff
rate and volume, stormwater runoff quality, and groundwater recharge.
(1)
Method of calculating stormwater runoff rate
and volume.
(a)
In complying with the stormwater runoff quantity and rate standards in Subsection E(2), the design engineer shall calculate the stormwater runoff rate and volume using the USDA Natural Resources Conservation Service (NRCS) runoff equation, runoff curve numbers, and dimensionless unit hydrograph, as described in the NRCS National Engineering Handbook Part 630 - Hydrology and Technical Release 55 - Urban Hydrology for Small Watersheds, incorporated herein by reference, as amended and supplemented. Alternative methods of calculation may be utilized, provided such alternative methods are at least as protective as the NRCS methodology when considered on a regional stormwater management basis.
(b)
In calculating stormwater runoff using the NRCS
methodology, the design engineer shall separately calculate and then
combine the runoff volumes from pervious and directly connected impervious
surfaces within each drainage area within the parcel.
(c)
Calculation of stormwater runoff from unconnected
impervious surfaces shall be based, as applicable, upon the two-step
method described in the current New Jersey Stormwater Best Management
Practices Manual or the NRCS methodology.
(d)
In calculating stormwater runoff using the NRCS
methodology, the design engineer shall use appropriate twenty-four-hour
rainfall depths as developed for the project site by the National
Oceanic and Atmospheric Administration, available online at http://hdsc.nws.noaa.gov/hdsc/pfds/index.html.
(e)
When calculating stormwater runoff for predeveloped
site conditions, the design engineer shall use the following criteria:
[1]
When selecting or calculating runoff
curve numbers (CNs) for predeveloped project site conditions, the
project site's land cover shall be assumed to be woods in good condition.
However, another land cover may be used to calculate runoff coefficients
if:
[a]
Such land cover has existed at
the site or portion thereof without interruption for at least five
years immediately prior to the time of application; and
[b]
The design engineer can document
the character and extent of such land cover through the use of photographs,
affidavits, and/or other acceptable land use records.
[2]
If more than one land cover has
existed on the site during the five years immediately prior to the
time of application, the land cover with the lowest runoff potential
shall be used for the computations.
[3]
All predeveloped land covers shall
be assumed to be in good hydrologic condition and, if cultivated,
shall be assumed to have conservation treatment.
[4]
In calculating predeveloped site
stormwater runoff, the design engineer shall include the effects of
all land features and structures, such as ponds, wetlands, depressions,
hedgerows, and culverts, that affect predeveloped site stormwater
runoff rates and/or volumes.
[5]
Where tailwater will affect the
hydraulic performance of a stormwater management measure, the design
engineer shall include such effects in the measure's design.
(2)
Method of calculating stormwater runoff quality.
(a)
In complying with the stormwater runoff quality standards in Subsection E(6), the design engineer shall calculate the stormwater runoff rate and volume using the USDA Natural Resources Conservation Service (NRCS) runoff equation, runoff curve numbers, and dimensionless unit hydrograph, as described in the NRCS National Engineering Handbook Part 630 - Hydrology and Technical Release 55 - Urban Hydrology for Small Watersheds, as amended and supplemented.
(b)
The design engineer shall also use the NJDEP
water quality design storm, which is 1.25 inches of rainfall falling
in a nonlinear pattern in two hours. Details of the water quality
design storm are shown in Table 1.
(c)
Calculation of runoff volumes, peak rates, and
hydrographs for the Water Quality Design Storm may take into account
the implementation of nonstructural and structural stormwater management
measures.
Table 1
| |||
---|---|---|---|
Water Quality Design Storm Distribution1
| |||
Time
(minutes)
|
Cumulative Rainfall
(inches)1
|
Time
(minutes)
|
Cumulative Rainfall
(inches)
|
0
|
0.0000
|
65
|
0.8917
|
5
|
0.0083
|
70
|
0.9917
|
10
|
0.0166
|
75
|
1.0500
|
15
|
0.0250
|
80
|
1.0840
|
20
|
0.0500
|
85
|
1.1170
|
25
|
0.0750
|
90
|
1.1500
|
30
|
0.1000
|
95
|
1.1750
|
35
|
0.1330
|
100
|
1.2000
|
40
|
0.1660
|
105
|
1.2250
|
45
|
0.2000
|
110
|
1.2334
|
50
|
0.2583
|
115
|
1.2417
|
55
|
0.3583
|
120
|
1.2500
|
60
|
0.6250
|
NOTES:
|
1 Source: N.J.A.C.
7:8-5.5(a).
|
(d)
Total suspended solids (TSS) reduction calculations.
[1]
If more than one stormwater BMP
in series is necessary to achieve the required eighty-percent TSS
reduction for a site, the applicant shall utilize the following formula
to calculate TSS reduction:
R = A + B - (A x B)/100
| ||||
Where
| ||||
R
|
=
|
Total TSS percent load removal from application
of both BMPs;
| ||
A
|
=
|
The TSS percent removal rate applicable to the
first BMP; and
| ||
B
|
=
|
The TSS percent removal rate applicable to the
second BMP.
|
[2]
If there is more than one on-site
drainage area, the eighty-percent TSS removal rate shall apply to
each drainage area, unless the runoff from the subareas converge on
site, in which case the removal rate can be demonstrated through a
calculation using a weighted average.
(e)
TSS removal rates for stormwater BMPs.
[1]
For purposes of TSS reduction calculations, Table 2 presents the presumed removal rates for certain BMPs designed in accordance with the New Jersey BMP Manual. The BMP Manual may be obtained from the address identified in Subsection I(1) or found on the NJDEP's website at www.njstormwater.org. TSS reduction shall be calculated based on the removal rates for the BMPs in Table 2.
[2]
Alternative stormwater management
measures, removal rates and methods of calculating removal rates may
be used if the design engineer provides documentation demonstrating
the capability of these alternative rates and methods to the Township
of Stafford. Any alternative stormwater management measure, removal
rate or method of calculating the removal rate shall be subject to
approval by the Township of Stafford, and a copy shall be provided
to the following:
[a]
The Division of Watershed Management,
New Jersey Department of Environmental Protection, P.O. Box 418, Trenton,
N.J. 08625-0418; and
[b]
The New Jersey Pinelands Commission,
P.O. Box 7, New Lisbon, N.J. 08064.
Table 2
| |||
---|---|---|---|
Pollutant Removal Rates for BMPs1
| |||
Best Management Practice
|
TSS Percent Removal Rate
|
Total Phosphorus Percent Removal Rate
|
Total Nitrogen Percent Removal Rate
|
Bioretention Systems
|
90%
|
60%
|
30%
|
Constructed stormwater wetland
|
90%
|
50%
|
30%
|
Extended detention basin
|
40% to 60% (final rate based upon detention
time; see New Jersey BMP Manual, Chapter 9)
|
20%
|
20%
|
Infiltration basin
|
80%
|
60%
|
50%
|
Manufactured treatment device
|
Pollutant removal rates as certified by NJDEP; see Subsection D
|
Pollutant removal rates as certified by NJDEP; see Subsection D
|
Pollutant removal rates as certified by NJDEP; see Subsection D
|
Pervious paving systems
|
80% (porous paving)
|
60%
|
50%
|
80% (permeable pavers with storage bed)
| |||
0%; volume reduction only (permeable pavers
without storage bed)
|
0%; volume reduction only (permeable pavers
without storage bed)
|
0%; volume reduction only (permeable pavers
without storage bed)
| |
Sand filter
|
80%
|
50%
|
35%
|
Vegetative filter strip (For filter strips with
multiple vegetated covers, the final TSS removal rate should be based
upon a weighted average of the adopted rates shown in Table 2, based
upon the relative flow lengths through each cover type.)
|
60% (turf grass)
| ||
70% (native grasses, meadow and planted woods)
|
30%
|
30%
| |
80% (indigenous woods)
| |||
Wet pond/retention basin
|
50% to 90% (final rate based upon pool volume
and detention time; see New Jersey BMP Manual)
|
50%
|
30%
|
Subsurface infiltration systems
|
80% (as approved by the NJDEP for Stafford Township)
|
60%
|
50%
|
NOTES:
|
1 Source: N.J.A.C.
7:8-5.5(c) and New Jersey BMP Manual, Chapter 4.
|
(f)
Nutrient removal rates for stormwater BMPs. For purposes of postdevelopment nutrient load reduction calculations, Table 2 presents the presumed removal rates for certain BMPs designed in accordance with the New Jersey BMP Manual. If alternative stormwater BMPs are proposed, the applicant shall demonstrate that the selected BMPs will achieve the nutrient removal standard required in Subsection E(6).
(3)
Methods of calculating groundwater recharge.
(a)
In complying with the groundwater recharge requirements in Subsection E(3)(a)[1], the design engineer may calculate groundwater recharge in accordance with the New Jersey Groundwater Recharge Spreadsheet (NJGRS) computer program incorporated herein by reference as amended and supplemented. Information regarding the methodology is available in Subsection H(1) or from the New Jersey BMP Manual.
(b)
Alternative groundwater recharge calculation
methods to meet these requirements may be used upon approval by the
Municipal Engineer.
(c)
In complying with the groundwater recharge requirements in Subsection E(3)(a)[2], the design engineer shall:
[1]
Calculate stormwater runoff volumes
in accordance with the USDA Natural Resources Conservation Service
(NRCS) methodology, including the NRCS runoff equation and runoff
curve numbers, as described in the NRCS National Engineering Handbook
Part 630 - Hydrology and Technical Release 55 - Urban Hydrology for
Small Watersheds, as amended and supplemented; and
[2]
Use appropriate two-year, twenty-four-hour
rainfall depths as developed for the project site by the National
Oceanic and Atmospheric Administration, available online at http://hdsc.nws.noaa.gov/hdsc/pfds/index.html.
(d)
When calculating groundwater recharge or stormwater
runoff for predeveloped site conditions, the design engineer shall
use the following criteria:
[1]
When selecting land covers or calculating
runoff curve numbers (CNs) for predeveloped project site conditions,
the project site's land cover shall be assumed to be woods. However,
another land cover may be used to calculate runoff coefficients if:
[a]
Such land cover has existed at
the site or portion thereof without interruption for at least five
years immediately prior to the time of application; and
[b]
The design engineer can document
the character and extent of such land cover through the use of photographs,
affidavits, and/or other acceptable land use records.
[2]
If more than one land cover, other
than woods, has existed on the site during the five years immediately
prior to the time of application, the land cover with the lowest runoff
potential (including woods) shall be used for the computations.
[3]
All predeveloped land covers shall
be assumed to be in good hydrologic condition and, if cultivated,
shall be assumed to have conservation treatment.
E.
Stormwater management performance standards for major
development.
(1)
Nonstructural stormwater management strategies.
(a)
To the maximum extent practicable, the performance standards in Subsection E for major development shall be met by incorporating the nine nonstructural strategies identified in Subchapter 5 of the N.J. Stormwater Management Rules (N.J.A.C. 7:8-5), and set forth in Subsection C(3)(d)[1], into the design. The applicant shall identify within the land use planning and source control plan required by Subsection C(3)(d) of this section how each of the nine nonstructural measures will be incorporated into the design of the project to the maximum extent practicable.
(b)
If the applicant contends that it is not practical for engineering, environmental, or safety reasons to incorporate any of the nine nonstructural strategies into the design of a particular project, the applicant shall provide a detailed rationale establishing a basis for the contention that use of the strategy is not practical on the site. This rationale shall be submitted, in accordance with the checklist requirements established by Subsection C, to Stafford Township. A determination by Stafford Township that this rationale is inadequate or without merit shall result in a denial of the application unless one of the following conditions is met:
[1]
The land use planning and source
control plan is amended to include a description of how all nine nonstructural
measures will be implemented on the development site, and the amended
plan is approved by Stafford Township;
[2]
The land use planning and source control plan is amended to provide an alternative nonstructural strategy or measure that is not included in the list of nine nonstructural measures, but still meets the performance standards in Subsection E, and the amended plan is approved by Stafford Township; or
[3]
The land use planning and source
control plan is amended to provide an adequate rationale for the contention
that use of the particular strategy is not practical on the site,
and the amended Plan is approved by Stafford Township.
(c)
In addition to all other requirements of this
section, each applicant shall demonstrate that, at a minimum, existing
trees and vegetation on the development site will be preserved, protected
and maintained according to the minimum standards established by provisions
of the Township of Stafford Land Use Ordinance, Zoning Ordinance[2] or conditions of zoning or variance approval. Existing
trees and vegetation shall be protected during construction activities
in accordance with the "Standard for Tree Protection During Construction"
provided in the N.J. State Soil Conservation Committee Standards for
Soil Erosion and Sediment Control in New Jersey, which is incorporated
herein by reference, as amended and supplemented.
(d)
In addition to all other requirements of this
section, each application for major development and any other application
where Stafford Township otherwise requires a landscaping plan shall
contain a landscaping or revegetation plan in accordance with the
Pinelands CMP standards at N.J.A.C. 7:50-6.24(c).
(e)
Any land area used as a nonstructural stormwater management measure to meet the performance standards in Subsection E shall be dedicated to a government entity; shall be subjected to a conservation easement filed with the appropriate County Clerk's office; or shall be subjected to an equivalent form of restriction approved by the Township of Stafford that ensures that that measure, or equivalent stormwater management measure, is maintained in perpetuity, as detailed in Subsection G of this section.
(f)
Guidance for nonstructural stormwater management strategies is available in the New Jersey BMP Manual, which may be obtained from the address identified in Subsection I(1) or found on the NJDEP's website at www.njstormwater.org.
(g)
Exception for major development sites creating less than one acre of disturbance. The use of nonstructural strategies to meet the performance standards in Subsection E of this section is not required for major development creating less than one acre of disturbance. However, the following requirements shall be met:
[1]
Each application for major development
and any other application where Stafford Township otherwise requires
a landscaping plan shall contain a landscaping or revegetation plan
prepared in accordance with the Pinelands CMP standards [N.J.A.C.
7:50-6.24(c)];
[2]
Each applicant shall demonstrate
that, at a minimum, existing trees and vegetation on the development
site will be preserved and protected according to the minimum standards
established by provisions of Stafford Township Land Use Ordinance,
Zoning Ordinance,[3] or conditions of zoning or variance approval; and
[3]
Existing trees and vegetation shall
be protected during construction activities in accordance with the
"Standard for Tree Protection During Construction" provided in the
N.J. State Soil Conservation Committee Standards for Soil Erosion
and Sediment Control in New Jersey, which is incorporated herein by
reference as amended and supplemented.
(2)
Stormwater runoff quantity and rate standards.
(a)
There shall be no direct discharge of stormwater
runoff from any point or nonpoint source to any wetland, wetlands
transition area or surface water body. In addition, stormwater runoff
shall not be directed in such a way as to increase the volume and/or
rate of discharge into any surface water body from that which existed
prior to development of the site.
(b)
To the maximum extent practical, there shall
be no direct discharge of stormwater runoff onto farm fields so as
to protect farm crops from damage due to flooding, erosion and long-term
saturation of cultivated crops and cropland.
(c)
For all major developments, subsurface infiltration
systems shall be provided; the greater of the total runoff volume
generated from the net increase of the postdevelopment and the predevelopment
one-hundred-year, twenty-four-hour storm or the total runoff volume
generated from the net increase in impervious surfaces by a ten-year,
twenty-four-hour storm shall be retained and infiltrated on site.
[1]
Where high water table, soil permeability
or configuration of the site make infiltration impractical, the Township
may approve a combination system or waive this requirement.
[2]
Where the soil infiltration rate
is less than 0.50 inch per hour, other methods of stormwater runoff
control shall be used.
[3]
Where a combination system is permitted,
it shall be designed in accordance with the New Jersey Stormwater
Best Management Practices Manual. In designing the combination stormwater
management system for a particular project, the existing physical
site conditions shall be carefully considered. Slopes, depth to seasonal
high water table relative to proposed grades, soil type, texture and
permeability of the watershed area and the site are all critical to
the selection of a suitable combination of stormwater management techniques.
[4]
Where a combination system is used,
it shall be designed to provide nonpoint source pollutant removal
efficiencies equivalent to the underground system when evaluated in
accordance with the New Jersey Stormwater Best Management Practices
Manual.
[5]
Where detention is permitted by
this section, it shall be designed to store the difference between
the postdevelopment runoff and the predevelopment runoff, less the
amount infiltrated by the subsurface infiltration system and any appropriate
credits for percolation and infiltration associated with any other
measures employed in the system and the postpeak percolation credit.
[6]
The construction of any facility
utilized to control on-site runoff or drainage shall be designed to
create a natural and aesthetically pleasing environment. Plants and
soil native to the area shall be used for landscaping, to the maximum
extent feasible. Special preference should be given to those species
of trees and plants which have known pollutant removal abilities.
When other ornamental plants are used, they shall be types compatible
with the natural environment.
[7]
Where depth to groundwater or other
physical conditions preclude the use of a subsurface infiltration
system as required by this section, then the applicant may request
an exception. Any such request for an exception shall be accompanied
by an engineering report explaining in detail why an exception is
required and including all of the information required by this section
which demonstrates the maximum feasible degree of compliance with
these requirements.
[8]
Subsurface infiltration systems
shall be designed and constructed in accordance with the following
requirements:
[a]
All inlets from which collected
runoff is conveyed to a subsurface infiltration system shall be equipped
with oil/grease and sediment separators designed in accordance with
the standard detail, which is Figure 8, Basin With Trap When Required,
to this chapter.[4]
[4]
Editor's Note: Figure 8 is included as an attachment to this chapter.
[b]
All subsurface infiltration systems
shall conform to the detail for trench recharge systems, which is
Figure 9,[5] to this chapter, and shall conform to the following requirements:
[i]
Filter material shall cover the
subsurface infiltration systems and extend the full width of the trench
or bed, shall not be less than 12 inches deep beneath the bottom of
the distribution line and shall extend at least six inches above the
top of the line. If used in the calculations of storage capacity,
the void volume of the stone shall be considered as 40%. The filter
material shall be installed within an envelope of filter fabric of
such mesh designed to inhibit migration of fines through the fabric.
The fabric shall be installed along the sides and top of the trench.
Fabric is not required on the bottom of the trench.
[ii]
Perforated pipe shall be constructed
true to the line and grade with open joints or perforations, except
that at least one tight joint at each bend or other fitting shall
be provided to prevent slippage. Bell and spigot pipe shall be laid
with one-half-inch open joints at two-foot intervals, and the bottom
of each joint shall contain a minimum of cement mortar to maintain
an even flow line.
[iii]
Perforated pipe shall not be
laid at depths less than 24 inches.
[iv]
Excavation for disposal beds or
trenches may be made by machinery, provided that the adjacent soil
will not be compacted. No excavation machinery shall be permitted
in the excavation. When an excavation is carried below the required
depth, it shall be brought up to the proper elevation with filter
material.
[v]
Subsurface infiltration systems
shall not be constructed over impervious ground formations where such
formations are less than 10 feet below the bottom elevation of the
filter material of the subsurface infiltration system.
[vi]
Subsurface infiltration systems
shall not be built up by fill to more than two feet, unless an adequate
grading plan has been approved. When subsurface infiltration systems
are built up by fill to a depth exceeding two feet, the area of such
fill shall extend at least 20 feet beyond the limits of the subsurface
infiltration system, and the fill shall be of earth having a percolation
value approximately equal to that of the ground over which the fill
is placed. The percolation rates used for the design of a system infill
shall be the volume found in the ground over which the fill is placed.
[vii]
When perforated pipe must be
laid with changes in either horizontal or vertical alignment, manholes
must be installed at each changed alignment.
[viii]
The percolating area of subsurface
infiltration systems shall be considered as the total area of the
system in square feet, except that any section of the trench containing
pipe laid with tight joints, other than fittings as required in this
section, shall not be considered in determining the percolation areas.
Bottom or top areas shall not be included.
[ix]
Catch basin inlets or manholes
shall be constructed at the end of each subsurface infiltration system
and at intervals not to exceed 600 feet. Catch basins shall have perforated
bottoms or sumps.
[x]
Precast concrete leaching pits
are permitted for use as subsurface infiltration systems in site plans.
When used, each pit shall include a manhole cover and frame to permit
access.
[xi]
The overflow structure in the
terminus manhole shall be removable to facilitate maintenance.
[5]
Editor's Note: Figure 9 is included as an attachment to this chapter.
(d)
Where the Township of Stafford has either approved a combination system or waived the underground infiltration system installation requirement as set forth in Subsection E(2)(c) in order to control stormwater, the design engineer, using the assumptions and factors for stormwater runoff and groundwater recharge calculations contained in Subsection D, shall either:
[1]
Demonstrate through hydrologic
and hydraulic analysis that the postdeveloped stormwater runoff hydrographs
from the project site for the two-, ten-, and one-hundred-year storms
do not exceed, at any point in time, the site's predeveloped runoff
hydrographs for the same storms;
[2]
Demonstrate through hydrologic
and hydraulic analysis that under postdeveloped site conditions:
[a]
There is no increase in predeveloped
stormwater runoff rates from the project site for the two-, ten-,
and one-hundred-year storms; and
[b]
Any increased stormwater runoff
volume or change in stormwater runoff timing for the two-, ten-, and
one-hundred-year storms will not increase flood damage at or downstream
of the project site. When performing this analysis for predeveloped
site conditions, all off-site development levels shall reflect existing
conditions. When performing this analysis for postdeveloped site conditions,
all off-site development levels shall reflect full development in
accordance with current zoning and land use ordinances; or
[3]
Demonstrate that the peak postdeveloped
stormwater runoff rates from the project site for the two-, ten-,
and one-hundred-year storms are 50%, 75% and 80%, respectively, of
the site's peak predeveloped stormwater runoff rates for the same
storms. Peak outflow rates from on-site stormwater measures for these
storms shall be adjusted, where necessary, to account for the discharge
of increased stormwater runoff rates and/or volumes from project site
areas not controlled by the on-site measures. These percentages do
not have to be applied to those portions of the project site that
are not proposed for development at the time of application, provided
that such areas are:
(e)
In tidal flood hazard areas, a stormwater runoff quantity analysis in accordance with Subsection E(2)(d)[1], [2] and [3] above shall only be applied if the increased volume of stormwater runoff could increase flood damages below the point of discharge.
(3)
Groundwater recharge standards.
(a)
For all major developments, the design engineer, using the assumptions and factors for stormwater runoff and groundwater recharge calculations contained in Subsection D, shall either:
[1]
Demonstrate through hydrologic
and hydraulic analysis that the postdeveloped project site maintains
100% of the site's predeveloped average annual groundwater recharge
volume; or
[2]
Demonstrate through hydrologic
and hydraulic analysis that any increase in the project site's stormwater
runoff volume for the two-year, twenty-four-hour storm from predeveloped
to postdeveloped conditions is infiltrated on site.
(b)
The design engineer shall assess the hydraulic
impact on the groundwater table and design the project site and all
site groundwater recharge measures so as to avoid adverse hydraulic
impacts. Adverse hydraulic impacts include, but are not limited to,
raising the groundwater table so as to cause surface ponding; flooding
of basements and other subsurface structures and areas; preventing
a stormwater infiltration basin from completely draining via infiltration
within 72 hours of a design storm event; and interference with the
proper operation of subsurface sewage disposal systems and other surface
and subsurface facilities in the vicinity of the groundwater recharge
measure.
(4)
Erosion control standards. The minimum design
and performance standards for erosion control are those established
under the Soil Erosion and Sediment Control Act, N.J.S.A. 4:24-39
et seq., and its implementing regulations, N.J.A.C. 2:90-1.1 through
1.4.
(5)
Stormwater runoff quality standards.
(a)
There shall be no direct discharge of stormwater
runoff from any point or nonpoint source to wetland, wetland transition
area or any surface water body.
(b)
Stormwater management measures shall be designed
to reduce the total suspended solids (TSS) load in the stormwater
runoff from the postdeveloped site by 80%, expressed as an annual
average.
(c)
Stormwater management measures shall also be
designed to reduce the nutrient load in the stormwater runoff from
the postdeveloped site by the maximum extent practicable. In achieving
this reduction, the design of the development site shall include nonstructural
and structural stormwater management measures that optimize nutrient
removal while still achieving the groundwater recharge, runoff quantity
and rate, and TSS removal standards in this section.
(d)
The standards for stormwater runoff quality required by this section shall be met using the methods, calculations, assumptions and pollutant removal rates provided in Subsection D.
(e)
Exceptions.
(6)
Additional stormwater quality standards for
high pollutant loading areas and areas where stormwater runoff is
exposed to source material.
(b)
For a major development in areas described in Subsection E(5)(e)[1][a] or [b] above, in addition to the infiltration requirements specified in Subsection E(2)(c) and the groundwater recharge requirements specified in Subsection E(3), the applicant shall demonstrate in the land use planning and source control plan required in Subsection C(3)(d) that the following requirements have been met:
[1]
The extent of the areas described
Subsection E(5)(e)[1][a] or [b] above have been minimized on the development
site to the maximum extent practicable;
[2]
The stormwater runoff from the areas described in Subsection E(6)(a)[1] and [2] above is segregated to the maximum extent practicable from the stormwater runoff generated from the remainder of the site such that co-mingling of the stormwater runoff from the areas described in Subsection E(6)(a)[1] and [2] above and the remainder of the site will be minimized;
[3]
The amount of precipitation falling directly on the areas described in Subsection E(6)(a)[1] and [2] above is minimized to the maximum extent practicable by means of a canopy, roof or other similar structure that reduces the generation of stormwater runoff; and
[4]
The stormwater runoff from or co-mingled with the areas described in Subsection E(6)(a)[1] and [2] above for the water quality design storm, defined in Subsection D(2), Table 1, shall be subject to pretreatment by one or more of the following stormwater BMPs, designed in accordance with the New Jersey BMP Manual to provide 90% TSS removal:
[a]
Bioretention system;
[b]
Sand filter;
[c]
Wet pond which shall be hydraulically
disconnected by a minimum of two feet of vertical separation from
the seasonal high water table and shall be designed to achieve a minimum
eighty-percent TSS removal rate;
[d]
Constructed stormwater wetlands;
and/or
[e]
Media filtration system manufactured
treatment device with a minimum eighty-percent TSS removal as verified
by the New Jersey Corporation for Advanced Technology and as certified
by NJDEP
[5]
If the potential for contamination of stormwater runoff by petroleum products exists on site, prior to being conveyed to the pretreatment BMP required in Subsection E(6)(b)[4] above, the stormwater runoff from the areas described in Subsection E(6)(a)[1] and [2] above shall be conveyed through an oil/grease separator or other equivalent manufactured filtering device to remove the petroleum hydrocarbons. The applicant shall provide the reviewing agency with sufficient data to demonstrate acceptable performance of the device.
(7)
Threatened and endangered species and associated
habitat standards. Stormwater management measures shall address the
impacts of the development on habitat for threatened and endangered
species, in accordance with N.J.A.C. 7:8-5.2(c), N.J.A.C. 7:50-6.27,
and 7:50-6.33 and 34.
(8)
Exceptions and mitigation requirements.
(a)
Exceptions from strict compliance from the groundwater
recharge, stormwater runoff quantity, and stormwater runoff quality
requirements established by this section may be granted, at the discretion
of the Township of Stafford, and subject to approval by the Pinelands
Commission, provided that all of the following conditions are met:
[1]
The exception is consistent with
that allowed by the Township of Stafford;
[2]
The Township of Stafford has an
adopted and effective municipal stormwater management plan in accordance
with N.J.A.C. 7:8-4.4, which includes a mitigation plan in accordance
with N.J.A.C. 7:8-4.2(c)11, and is also certified by the Pinelands
Commission. The mitigation plan shall identify what measures are necessary
to offset the deficit created by granting the exception, and the municipality
shall submit a written report to the county review agency and the
NJDEP describing the exception and the required mitigation. Guidance
for developing municipal stormwater management plans, including mitigation
plans, is available from the NJDEP, Division of Watershed Management,
and the New Jersey BMP Manual.
[3]
The applicant demonstrates that mitigation, in addition to the requirements of the mitigation plan discussed in Subsection E(8)(a)[2] above, will be provided, consistent with one of the following options:
[a]
Mitigation may be provided off
site, but within the Pinelands Area and within the same drainage area
as the development site, and shall meet or exceed the equivalent recharge,
quality or quantity performance standard which is lacking on the development
site due to the exception; or
[b]
In lieu of the required mitigation,
a monetary in-lieu contribution may be provided by the applicant to
Stafford Township in accordance with the following:
[i]
The amount of the in-lieu contribution
shall be determined by Stafford Township, but the maximum in-lieu
contribution required shall be equivalent to the cost of implementing
and maintaining the stormwater management measure(s) for which the
exception is granted.
[ii]
The in-lieu contribution shall be used to fund an off-site stormwater control mitigation project(s) located within the Pinelands Area, within the same drainage area as the development site, and shall meet or exceed the equivalent recharge, quality or quantity performance standards which are lacking on the development site. Such mitigation project shall be identified by the Township of Stafford in the Township's adopted municipal stormwater management plan. The stormwater control project to which the monetary contribution will be applied shall be identified by Stafford Township at the time the exception is granted. The applicant shall amend the project description and site plan required in Subsection C(3)(c) to incorporate a description of both the standards for which an on-site exception is being granted and of the selected off-site mitigation project.
[iii]
Stafford Township shall expend the in-lieu contribution to implement the selected off-site mitigation project within five years from the date that payment is received. Should Stafford Township fail to expend the in-lieu contribution within the required time frame, the mitigation option provided in Subsection E(8) of this section shall be void, and Stafford Township shall be prohibited from collecting in-lieu contributions.
(b)
An exception from strict compliance granted in accordance with Subsection E(8)(a) above shall not constitute a waiver of strict compliance from the requirements of the Pinelands Comprehensive Management Plan at N.J.A.C. 7:50. An applicant should contact the Pinelands Commission to determine whether a waiver of strict compliance is also required in accordance with N.J.A.C. 7:50, Subchapter 4, Part V.
F.
Design, construction, and safety standards for structural
stormwater management measures.
(1)
General design and construction standards.
(a)
Structural stormwater management measures shall
be designed to meet the standards established in this section. These
standards have been developed to protect public safety, conserve natural
features, create an aesthetically pleasing site and promote proper
on-site stormwater management.
(b)
The following structural stormwater management
measures may be utilized as part of a stormwater management system
at a major land development in the Pinelands, provided that the applicant
demonstrates that they are designed, constructed and maintained so
as to meet the standards and requirements established by this section.
If alternative stormwater management measures are proposed, the applicant
shall demonstrate that the selected measures will achieve the standards
established by this section.
[1]
Bioretention systems;
[2]
Constructed stormwater wetlands;
[3]
Extended detention basins;
[4]
Infiltration basins;
[5]
Vegetated filter strips;
[6]
Infiltration basins and trenches;
[7]
Wet ponds with suitable liners;
[8]
Pervious paving systems; and
[9]
Manufactured treatment devices,
provided their pollutant removal rates are verified by the New Jersey
Corporation for Advanced Technology and certified by the NJDEP.
[10]
Subsurface infiltration systems.
(c)
Structural stormwater management measures shall
be designed to take into account the existing site conditions, including
environmentally critical areas, wetlands, flood-prone areas, slopes,
depth to seasonal high water table, soil type, permeability and texture,
and drainage area and drainage patterns.
(d)
Structural stormwater management measures shall
be designed and constructed to be strong, durable, and corrosion resistant
(measures that are consistent with the relevant portions of the Residential
Site Improvement Standards at N.J.A.C. 5:21-7.3, 5:21-7.4 and 5:21-7.8
shall be deemed to meet this requirement); to minimize and facilitate
maintenance and repairs; and to ensure proper functioning.
(e)
For all stormwater management measures at a development site, each applicant shall submit a detailed inspection, maintenance and repair plan consistent with the requirements of Subsection G of this section.
(f)
To the maximum extent practicable, the design
engineer shall design structural stormwater management measures on
the development site in a manner that:
[1]
Limits site disturbance, maximizes
stormwater management efficiencies, and maintains or improves aesthetic
conditions.
[2]
Utilizes multiple stormwater management
measures, smaller in size and distributed spatially throughout the
land development site, instead of a single larger structural stormwater
management measure.
[3]
Incorporates pretreatment measures.
Pretreatment can extend the functional life and increase the pollutant
removal capability of a structural stormwater management measure.
Pretreatment measures may be designed in accordance with the New Jersey
BMP Manual or other sources approved by the Municipal Engineer.
(g)
Stormwater management basins shall be designed
in a manner that complements and mimics the existing natural landscape,
including but not limited to the following design strategies:
[1]
Use of natural, non-wetland wooded
depressions for stormwater runoff storage; and
[2]
Establishment of attractive landscaping
in and around the basin that mimics the existing vegetation and incorporates
native Pinelands plants, including, but not limited to, the species
listed in N.J.A.C. 7:50-6.25 and 7:50-6.26.
(h)
Stormwater management basins proposed as part of a subdivision or residential use site plan shall be located entirely within a separate lot, with ownership to be by an established homeowners' association established in accordance with state statutes and requirements of the Township Land Development Ordinance. Maintenance and repair shall be in conformance with Revised General Ordinances of the Township of Stafford, § 130-79, Stormwater maintenance and repair of system, nonresidential.
(i)
Stormwater management basins shall be designed
with gently sloping sides. The maximum allowable basin side slope
shall be three horizontal to one vertical.
(j)
Guidance on the design and construction of structural
stormwater management measures may be found in the New Jersey BMP
Manual. Other guidance sources may also be used upon approval by the
Municipal Engineer.
(k)
After all construction activities and required
field testing have been completed on the development site, as-built
plans depicting design and as-built elevations of all stormwater management
measures shall be prepared by a licensed land surveyor and submitted
to the Municipal Engineer. Based upon the Municipal Engineer's review
of the as-built plans, all corrections or remedial actions deemed
by the Municipal Engineer to be necessary due to the failure to comply
with the standards established by this section and/or any reasons
of public health or safety shall be completed by the applicant.
(2)
Design and construction standards for stormwater
infiltration BMPs.
(a)
Stormwater infiltration BMPs, such as bioretention
systems with infiltration, dry wells, infiltration basins, pervious
paving systems with storage beds, and sand filters with infiltration,
and subsurface infiltration systems shall be designed, constructed
and maintained to completely drain the total runoff volume generated
by the basin's maximum design storm within 72 hours after a storm
event. Runoff storage for greater times can render the BMP ineffective
and may result in anaerobic conditions, odor and both water quality
and mosquito breeding problems.
(b)
Stormwater infiltration BMPs shall be designed,
constructed and maintained to provide a minimum separation of at least
two feet between the elevation of the lowest point of the bottom of
the infiltration BMP and the seasonal high water table.
(c)
A stormwater infiltration BMP shall be sited
in suitable soils verified by field testing to have permeability rates
between one inch and 20 inches per hour. If such site soils do not
exist or if the design engineer demonstrates that it is not practical
for engineering, environmental or safety reasons to site the stormwater
infiltration BMP(s) in such soils, then the stormwater infiltration
BMP(s) may be sited in soils verified by field testing to have permeability
rates in excess of 20 inches per hour, provided that a bioretention
system, designed, installed and maintained in accordance with the
New Jersey BMP Manual, is installed to meet one of the following conditions:
[1]
The bioretention system is constructed
as a separate measure designed to provide pretreatment of stormwater
and to convey the pretreated stormwater into the infiltration BMP;
or
[2]
The bioretention system is integrated
into and made part of the infiltration BMP and, as such, does not
require an underdrain system. If this option is selected, the infiltration
BMP shall be designed and constructed so that the maximum water depth
in the bioretention system portion of the BMP during treatment of
the stormwater quality design storm is 12 inches in accordance with
the New Jersey BMP Manual.
(d)
The minimum design permeability rate for the soil within a BMP that relies on infiltration shall be 0.5 inch per hour. A factor of safety of two shall be applied to the soil's field-tested permeability rate to determine the soil's design permeability rate. (For example, if the field-tested permeability rate of the soil is four inches per hour, its design permeability rate would be two inches per hour.) The minimum design permeability rate for the soil within a stormwater infiltration basin shall also be sufficient to achieve the minimum seventy-two-hour drain time described in Subsection F(2)(a) above. The maximum design permeability shall be 10 inches per hour.
(e)
A soil's field tested permeability rate shall
be determined in accordance with the following:
[1]
The predevelopment field test permeability rate shall be determined according to the methodologies provided in Subsection H(3)(c) of this section;
[2]
The results of the required field
permeability tests shall demonstrate a minimum tested infiltration
rate of one inch per hour;
[3]
After all construction activities have been completed on the site and the finished grade has been established in the infiltration BMP, postdevelopment field permeability tests shall also be conducted according to the methodologies provided in Subsection H(3)(c) of this section;
[4]
If the results of the postdevelopment field permeability tests fail to achieve the minimum required design permeability rates in Subsection F(2)(d) above utilizing a factor of safety of two, the stormwater infiltration BMP shall be renovated and retested until such minimum required design permeability rates are achieved; and
[5]
The results of all field permeability
tests shall be certified by a professional engineer and transmitted
to the Municipal Engineer.
(f)
To help ensure maintenance of the design permeability
rate over time, a six-inch layer of K5 soil shall be placed on the
bottom of a stormwater infiltration BMP. This soil layer shall meet
the textural and permeability specifications of a K5 soil as provided
at N.J.A.C. 7:9A, Appendix A, Figure 6, and be certified to meet these
specifications by a professional engineer licensed in the State of
New Jersey. The depth to the seasonal high water table shall be measured
from the bottom of the K5 sand layer.
(g)
The design engineer shall assess the hydraulic
impact on the groundwater table and design the project site and all
stormwater infiltration basins so as to avoid adverse hydraulic impacts.
Adverse hydraulic impacts include, but are not limited to, raising
the groundwater table so as to cause surface ponding; flooding of
basements and other subsurface structures and areas; preventing a
stormwater infiltration basin from completely draining via infiltration
within 72 hours of a design storm event; and interference with the
proper operation of subsurface sewage disposal systems and other surface
and subsurface structures in the vicinity of the stormwater infiltration
basin.
(h)
The design engineer shall conduct a groundwater mounding analysis, as defined in Subsection A, of all stormwater infiltration BMPs. The mounding analysis shall be conducted in accordance with the requirements in Subsection H(3)(c)[12]. Where the mounding analysis identifies adverse impacts, the stormwater infiltration BMP shall be redesigned or relocated, as appropriate.
(i)
Stormwater infiltration BMPs shall be constructed
in accordance with the following:
[1]
To avoid sedimentation that may
result in clogging and reduce the basin's permeability rate, stormwater
infiltration basins shall be constructed according to the following:
[a]
Unless the conditions in Subsection
F(2)(i)[1][b] below are met, a stormwater infiltration basin shall
not be placed into operation until its drainage area is completely
stabilized. Instead, upstream runoff shall be diverted around the
basin and into separate, temporary stormwater management facilities
and sediment basins. Such temporary facilities and basins shall be
installed and utilized for stormwater management and sediment control
until stabilization is achieved in accordance with the Standards for
Soil Erosion and Sediment Control in New Jersey, which is incorporated
herein by reference, as amended and supplemented.
[b]
If the design engineer determines that, for engineering, environmental or safety reasons, temporary stormwater management facilities and sediment basins cannot be constructed on the site, the stormwater infiltration basin may be placed into operation prior to the complete stabilization of its drainage area, provided that the basin's bottom during this period is constructed at a depth at least two feet higher than its final design elevation. All other infiltration BMP construction requirements in this section shall be followed. When the drainage area is completely stabilized, all accumulated sediment shall be removed from the infiltration BMP, which shall then be excavated to its final design elevation in accordance with the construction requirements of this section and the performance standards in Subsection E.
[2]
To avoid compaction of subgrade soils of BMPs that rely on infiltration, no heavy equipment such as backhoes, dump trucks or bulldozers shall be permitted to operate within the footprint of the BMP. All excavation required to construct a stormwater infiltration BMP shall be performed by equipment placed outside the BMP. If this is not possible, the soils within the excavated area shall be renovated and tilled after construction is completed to reverse the effects of compaction. In addition, postdevelopment soil permeability testing shall be performed in accordance with Subsection F(2)(e) of this section.
[3]
Earthwork associated with stormwater
infiltration BMP construction, including excavation, grading, cutting
or filling, shall not be performed when soil moisture content is above
the lower plastic limit.
(3)
Safety standards for structural stormwater management measures. This Subsection F(3) sets forth requirements to protect public safety through the proper design and operation of stormwater management basins. This subsection applies to any new stormwater management basin.
(a)
If a structural stormwater management measure
has an outlet structure, escape provisions shall be incorporated in
or on the structure. "Escape provisions" means the permanent installation
of ladders, steps, rungs, or other features that provide readily accessible
means of ingress and egress from the outlet structure.
(b)
A trash rack is a device intended to intercept
runoff-borne trash and debris that might otherwise block the hydraulic
openings in an outlet structure of a structural stormwater management
measure. Trash racks shall be installed upstream of such outlet structure
openings as necessary to ensure proper functioning of the structural
stormwater management measure in accordance with the following:
[1]
The trash rack should be constructed
primarily of bars aligned in the direction of flow with one-inch spacing
between the bars to the elevation of the water quality design storm.
For elevations higher than the water quality design storm, the bars
shall be spaced no greater than 1/3 the width of the hydraulic opening
it is protecting or six inches, whichever is less. Transverse bars
aligned perpendicular to flow should be sized and spaced as necessary
for rack stability and strength.
[2]
The trash rack shall not adversely
affect the hydraulic performance of either the outlet structure opening
it is protecting or the overall outlet structure.
[3]
The trash rack shall have sufficient
net open area under clean conditions to limit the peak design storm
velocity through it to a maximum of 2.5 feet per second.
[4]
The trash rack shall be constructed
and installed to be rigid, durable, and corrosion resistant and shall
be designed to withstand a perpendicular live loading of 300 pounds
per square foot.
(c)
An overflow grate is a device intended to protect
the opening in the top of a stormwater management measure outlet structure.
If an outlet structure has an overflow grate, such grate shall meet
the following requirements:
[1]
The overflow grate shall be secured
to the outlet structure but removable for emergencies and maintenance;
[2]
The overflow grate spacing shall
be no more than two inches across the smallest dimension; and
[3]
The overflow grate shall be constructed
and installed to be rigid, durable, and corrosion resistant and shall
be designed to withstand a perpendicular live loading of 300 pounds
per square foot.
(d)
The maximum side slope for an earthen dam, embankment,
or berm shall not be steeper than three horizontal to one vertical.
(e)
Safety ledges shall be constructed on the slopes of all new structural stormwater management measures having a permanent pool of water deeper than 2.5 feet. Such safety ledges shall be comprised of two steps. Each step shall be four feet to six feet in width. One step shall be located approximately 2.5 feet below the permanent water surface, and the second step shall be located one foot to 1.5 feet above the permanent water surface. See Subsection F(3)(e)[1], below, for an illustration of safety ledges in a stormwater management basin.
G.
Inspection, maintenance and repair of stormwater management
measures.
(2)
General inspection, maintenance and repair plan.
(a)
The design engineer shall prepare an inspection, maintenance and repair plan for the stormwater management measures, including both structural and nonstructural measures incorporated into the design of a major development. This plan shall be submitted as part of the checklist requirements established in Subsection C(3). Inspection and maintenance guidelines for stormwater management measures are available in the New Jersey BMP Manual.
(b)
The inspection, maintenance and repair plan
shall contain the following:
[1]
Accurate and comprehensive drawings
of the site's stormwater management measures;
[2]
Specific locations of each stormwater
management measure identified by means of longitude and latitude as
well as block and lot number;
[3]
Specific preventative and corrective
maintenance tasks and schedules for such tasks for each stormwater
BMP;
[4]
Cost estimates, including estimated
cost of sediment, debris or trash removal; and
[5]
The name, address and telephone
number of the person or persons responsible for regular inspections
and preventative and corrective maintenance (including repair and
replacement). If the responsible person or persons is a corporation,
company, partnership, firm, association, municipality or political
subdivision of this state, the name and telephone number of an appropriate
contact person shall also be included.
(c)
The person responsible for inspection, maintenance and repair identified under Subsection G(2)(b) above shall maintain a detailed log of all preventative and corrective maintenance performed for the site's stormwater management measures, including a record of all inspections and copies of all maintenance-related work orders in the inspection, maintenance and repair plan. Said records and inspection reports shall be retained for a minimum of five years.
(d)
If the inspection, maintenance and repair plan
identifies a person other than the developer (for example, a public
agency or homeowners' association) as having the responsibility for
inspection and maintenance, the plan shall include documentation of
such person's agreement to assume this responsibility or of the developer's
obligation to dedicate a stormwater management measure to such person
under an applicable ordinance or regulation.
(e)
If the person responsible for inspection, maintenance and repair identified under Subsection G(2)(c) above is not a public agency, the maintenance plan and any future revisions based on Subsection G(2)(f) below shall be recorded upon the deed of record for each property on which the maintenance described in the maintenance plan shall be undertaken.
(f)
The person responsible for inspection, maintenance and repair identified under Subsection G(2)(b) above shall evaluate the effectiveness of the inspection, maintenance and repair plan at least once per year and update the plan and the deed as needed.
(h)
The person responsible for inspection, maintenance and repair identified under Subsection G(2)(b) above shall retain and make available, upon request by any public entity with administrative, health, environmental or safety authority over the site, the inspection, maintenance and repair plan and the documentation required by Subsection G(2)(b) and (c) above.
(3)
Responsibility for inspection, repair and maintenance
shall not be assigned or transferred to the owner or tenant of an
individual property in a residential development or project, unless
such owner or tenant owns or leases the entire residential development
or project.
(4)
Preventative and corrective maintenance shall
be performed to maintain the function of the stormwater management
measure, including, but not limited to, repairs or replacement to
any associated appurtenance of the measure; removal of sediment, debris,
or trash; restoration of eroded areas; snow and ice removal; fence
repair or replacement; restoration of vegetation; repair or replacement
of linings; and restoration of infiltration function.
(5)
Stormwater management measure easements shall
be provided by the property owner as necessary for facility inspections
and maintenance and preservation of stormwater runoff conveyance,
infiltration, and detention areas and facilities. The purpose of the
easement shall be specified in the maintenance agreement.
(6)
In the event that the stormwater management
measure becomes a public health nuisance or danger to public safety
or public health, or if it is in need of maintenance or repair, the
Township of Stafford shall so notify the responsible person in writing.
Upon receipt of that notice, the responsible person shall have 14
days to effect maintenance and repair of the facility in a manner
that is approved by the Municipal Engineer or the Municipal Engineer's
designee. Stafford Township, at its discretion, may extend the time
allowed for effecting maintenance and repair for good cause. If the
responsible person fails or refuses to perform such maintenance and
repair within the allowable time, Stafford Township may immediately
proceed to do so with its own forces and equipment and/or through
contractors. The costs and expenses of such maintenance and repair
by Stafford Township shall be entered on the tax roll as a special
charge against the property and collected with any other taxes levied
thereon for the year in which the maintenance and repair was performed.
(7)
Requirements for inspection, maintenance and
repair of stormwater BMPs that rely on infiltration.
(a)
If a stormwater infiltration BMP is incorporated
into the design of a major development, the applicant shall include
the following requirements in its inspection, maintenance and repair
plan:
[1]
Once per month (if needed): Mow
side slopes, remove litter and debris, stabilize eroded banks, repair
erosion at inflow structure(s);
[2]
After every storm exceeding one
inch of rainfall: Ensure that infiltration BMPs drain completely within
72 hours after the storm event. If stored water fails to infiltrate
72 hours after the end of the storm, corrective measures shall be
taken. Raking or tilling by light equipment can assist in maintaining
infiltration capacity and break up clogged surfaces;
[3]
Four times per year (quarterly):
Inspect stormwater infiltration BMPs for clogging and excessive debris
and sediment accumulation within the BMP; remove sediment (if needed)
when completely dry;
[4]
Two times per year: Inspect for
signs of damage to structures, repair eroded areas, check for signs
of petroleum contamination and remediate;
[5]
Once per year: Inspect BMPs for
unwanted tree growth and remove if necessary; disc or otherwise aerate
bottom of infiltration basin to a minimum depth of six inches; and
[6]
After every storm exceeding one
inch of rainfall, inspect and, if necessary, remove and replace K5
sand layer and accumulated sediment, to restore original infiltration
rate.
(b)
Additional guidance for the inspection, maintenance
and repair of stormwater infiltration BMPs can be found in the New
Jersey BMP Manual.
(8)
Financing of inspection, maintenance and repair
of stormwater BMPs. An adequate means of ensuring permanent financing
of the inspection, maintenance and repair of stormwater BMPs shall
be implemented and detailed in the inspection, maintenance and repair
plan. Permanent financing of the inspection, maintenance and repair
of stormwater BMPs shall be accomplished by:
(a)
The assumption of the inspection and maintenance
program by a homeowners' association or property owner.
H.
Appendixes.
(1)
Methods for calculating groundwater recharge.
(a)
The New Jersey Geological Survey Report GSR-32:
A Method for Evaluating Ground-Water Recharge Areas in New Jersey.
Available at http://www.njgeology.org/geodata/dgs99-2.htm.
(2)
NJDEP nonstructural strategies point system. The New Jersey Stormwater Management Rules at N.J.A.C. 7:8-5.2(A) and Subsection E(1) of this section, require nonstructural stormwater management strategies to be incorporated into the site design of a major development. A total of nine strategies are to be used to the maximum extent practical to meet the groundwater recharge, stormwater quality and stormwater quantity requirements of the rules prior to utilizing structural stormwater management measures. The New Jersey Nonstructural Stormwater Management Strategies Point System (NSPS) provides a tool to assist planners, designers and regulators in determining that the strategies have been used to the "maximum extent practical" at a major development as required by the rules. Refer online to http://www.njstormwater.org for information on the NSPS.
(3)
Soils.
(b)
A-HORIZON
ARTESIAN ZONE OF SATURATION
CHROMA
CLAY
CLAY LOAM
COARSE FRAGMENT
COUNTY SOIL SURVEY REPORT
DIRECT SUPERVISION
EQUIVALENT SPHERICAL DIAMETER OF A PARTICLE
EXCESSIVELY COARSE HORIZON
EXCESSIVELY COARSE SUBSTRATUM
EXTREMELY FIRM CONSISTENCE
FIRM CONSISTENCE
HARD CONSISTENCE
HUE
HYDRAULICALLY RESTRICTIVE HORIZON
HYDRAULICALLY RESTRICTIVE SUBSTRATUM
LOAMY SAND
LOWER PLASTIC LIMIT
MOTTLING
MUNSELL SYSTEM
O-HORIZON
PERCHED ZONE OF SATURATION
PIEZOMETER
PLATY STRUCTURE
REGIONAL ZONE OF SATURATION
SANDY CLAY
SANDY LOAM
SILT
SILT LOAM
SILTY CLAY
SILTY CLAY LOAM
SOIL AGGREGATE
SOIL COLOR
SOIL CONSISTENCE
SOIL HORIZON
SOIL LOG
SOIL MAPPING UNIT
SOIL PHASE
SOIL PROFILE
SOIL SERIES
SOIL STRUCTURAL CLASS
SOIL STRUCTURE
SOIL TEST PIT
SOIL TEXTURAL CLASS
SOIL TEXTURE
STATIC WATER LEVEL
SUBSTRATUM
UNSUITABLE SOIL
USDA SYSTEM OF CLASSIFICATION
VALUE
VERY FIRM CONSISTENCE
VERY HARD CONSISTENCE
ZONE OF SATURATION
Definitions. For the purposes of this appendix,
the following terms shall have the meanings herein ascribed to them:
The uppermost mineral horizon in a normal soil profile. The
upper part of the A-horizon is characterized by maximum accumulation
of finely divided, dark-colored organic residues, known as humus,
which are intimately mixed with the mineral particles of the soil.
A zone of saturation which exists immediately below a hydraulically
restrictive horizon and which has an upper surface which is at a pressure
greater than atmospheric, either seasonally or throughout the year.
The relative purity or strength of a color, a quantity which
decreases with increasing grayness. Chroma is one of the three variables
of soil color as defined in the Munsell system of classification.
A particle size category consisting of mineral particles which are smaller than 0.002 millimeters in equivalent spherical diameter. Also, a soil textural class having more than 40% clay, less than 45% sand, and less than 40% silt, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A soil textural class having 27% to 40% clay and 20% to 45% sand, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A rock fragment contained within the soil which is greater
than two millimeters in equivalent spherical diameter or which is
retained on a two-millimeter sieve.
A report prepared by the U.S. Department of Agriculture,
Natural Resources Conservation Service, which includes maps showing
the distribution of soil mapping units throughout a particular county,
together with narrative descriptions of the soil series shown and
other information relating to the uses and properties of the various
soil series.
Control over and direction of work carried out by others
with full knowledge of and responsibility for such work.
The diameter of a sphere which has a volume equal to the
volume of the particle.
A horizon of limited thickness within the soil profile which
provides inadequate removal of pollutants from stormwater due to a
high coarse fragment content, excessively coarse texture and/or excessively
rapid permeability.
A substratum below the soil profile which extends beyond
the depth of soil profile pits and borings and which provides inadequate
removal of pollutants from stormwater due to a high coarse fragment
content, excessively coarse texture and/or excessively rapid permeability.
A type of soil material whose moist aggregated mass crushes
only under very strong pressure; cannot be crushed between the thumb
and forefinger and shall be broken apart bit by bit.
A type of soil material whose moist aggregated mass crushes
under moderate pressure between the thumb and forefinger, but resistance
is distinctly noticeable.
A type of soil material whose dry aggregated mass is moderately
resistant to pressure; can be broken in the hands without difficulty
but is barely breakable between the thumb and forefinger.
The dominant spectral color, one of the three variables of
soil color defined within the Munsell system of classification.
A horizon within the soil profile which slows or prevents
the downward or lateral movement of water and which is underlain by
permeable soil horizons or substrata. Any soil horizon which has a
saturated permeability less than one inch per hour is hydraulically
restrictive.
A substratum below the soil profile which slows or prevents
the downward or lateral movement of water and which extends beyond
the depth of profile pits or borings or to a massive substratum. A
substratum which has a saturated permeability less than one inch per
hour is hydraulically restrictive.
A soil textural class, as shown in Subsection H(3)(a) (USDA soil textural triangle), that has a maximum of 85% to 90% sand with a percentage of silt plus 1.5 times the percentage of clay not in excess of 15%, or a minimum of 70% to 85% sand with a percentage of silt plus 1.5 times the percentage of clay not in excess of 30%.
The moisture content corresponding to the transition between
the plastic and semisolid states of soil consistency. This corresponds
to the lowest soil moisture content at which the soil can be molded
in the fingers to form a rod or wire, 1/8 inch in thickness, without
crumbling.
A color pattern observed in soil consisting of blotches or
spots of contrasting color. The term "mottle" refers to an individual
blotch or spot. The terms "color variegation," "iron depletion" and
"iron concentration" are equivalent to the term "mottling." Mottling
due to redoximorphic reactions is an indication of seasonal or periodic
and recurrent saturation.
A system of classifying soil color consisting of an alphanumeric
designation for hue, value and chroma, such as "7.5 YR 6/2," together
with a descriptive color name, such as "strong brown."
A surface horizon, occurring above the A-horizon in some
soils, which is composed primarily of undecomposed or partially decomposed
plant remains which have not been incorporated into the mineral soil.
A zone of saturation which occurs immediately above a hydraulically
restrictive horizon and which is underlain by permeable horizons or
substrata which are not permanently or seasonally saturated.
A device consisting of a length of metal or plastic pipe,
open at the bottom or perforated within a specified interval, and
used for the determination of depth to water, permeability or hydraulic
head within a specific soil horizon or substratum.
Characterized by a soil aggregate which has one axis distinctly
shorter than the other two and is oriented with the short axis vertical.
A zone of saturation which extends vertically without interruption
below the depth of soil borings and profile pits.
A soil textural class having 35% or more of clay and 45% or more of sand, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A soil textural class, as shown in Subsection H(3)(a) (USDA soil textural triangle), that has a maximum of 20% clay, and the percentage of silt plus twice the percentage of clay exceeds 30, and contains 52% or more sand; or less than 7% clay, less than 50% silt, and between 43% and 52% sand.
A particle size category consisting of mineral particles which are between 0.002 and 0.05 millimeters in equivalent spherical diameter. It also means a soil textural class having 80% or more of silt and 12% or less of clay, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A soil textural class having 50% or more of silt and 12% to 27% of clay; or 50% to 80% of silt and less than 12% of clay, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A soil textural class having 40% or more of clay and 40% or more of silt, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A soil textural class having 27% to 40% of clay and less than 20% of sand, as shown in Subsection H(3)(a) (USDA soil textural triangle).
A naturally occurring unit of soil structure consisting of
particles of sand, silt, clay, organic matter, and coarse fragments
held together by the natural cohesion of the soil.
The soil color name and Munsell color designation determined
by comparison of the moist soil with color chips contained in a Munsell
soil color book.
The resistance of a soil aggregate or clod to being crushed
between the fingers or broken by the hands. Terms for describing soil
consistence described are in N.J.A.C. 7:9A-5.3(h).
A layer within a soil profile differing from layers of soil
above and below it in one or more of the soil morphological characteristics,
including color, texture, coarse fragment content, structure, consistence
and mottling.
A description of the soil profile which includes the depth,
thickness, color, texture, coarse fragment content, mottling, structure
and consistence of each soil horizon or substratum.
An area outlined on a map in a county soil survey report
and marked with a letter symbol designating a soil phase, a complex
of two or more soil phases, or some other descriptive term where no
soil type has been identified.
A specific type of soil which is mapped by the Natural Resources
Conservation Service and which belongs to a soil series described
within the county soil survey report.
A vertical cross section of undisturbed soil showing the
characteristic horizontal layers or horizons of the soil which have
formed as a result of the combined effects of parent material, topography,
climate, biological activity and time.
A grouping of soil types possessing a specific range of soil
profile characteristics which are described within the county soil
survey report. Each soil series may consist of several soil phases
which may differ in slope, texture of the surface horizon, or stoniness.
One of the shape classes of soil structure described in N.J.A.C.
7:9A-5.3(g).
The naturally occurring arrangement, within a soil horizon,
of sand, silt and clay particles, coarse fragments and organic matter,
which are held together in clusters or aggregates of similar shape
and size.
An excavation made for the purpose of exposing a soil profile
which is to be described.
One of the classes of soil texture defined within the USDA
system of classification. (Soil Survey Manual, Agricultural Handbook
No. 18, USDA Soil Conservation Service, 1962.)
The relative proportions of sand, silt and clay in that portion
of the soil which passes through a sieve with two-millimeter openings.
The depth below the ground surface or the elevation, with
respect to some reference level, of the water level observed within
a soil profile pit or boring, or within a piezometer, after this level
has stabilized or become relatively constant with the passage of time.
A layer of soil or rock material present below the soil profile
and extending beyond the depth of soil borings or profile pits.
All soil other than suitable soil.
The system of classifying soil texture used by the United States Department of Agriculture which defines 12 soil textural classes based upon the weight percentages of sand, silt and clay in that portion of the soil which passes through a sieve with two-millimeter openings. The soil textural classes are shown graphically on the USDA soil textural triangle, as shown in Subsection H(3)(a).
The relative lightness or intensity of a color, one of the
three variables of soil color defined within the Munsell system of
classification.
Characterized by a moist soil which crushes under strong
pressure; barely crushable between the thumb and forefinger.
Characterized by a dry soil which is resistant to pressure,
can be broken in the hands only with difficulty; not breakable between
the thumb and forefinger.
A layer within or below the soil profile which is saturated
with groundwater either seasonally or throughout the year. This includes
both regional and perched zones.
(c)
Methods for assessing soil suitability for infiltration
stormwater management BMPs. The results of a subsurface investigation
shall serve as the basis for the site selection and design of stormwater
infiltration BMPs. The subsurface investigation shall include, but
not be limited to, a series of soil test pits and soil permeability
tests conducted in accordance with the following:
[1]
All soil test pits and soil permeability
results shall be performed under the direct supervision of a professional
engineer. All soil logs and permeability test data shall be accompanied
by a certification by a professional engineer. The results and location
(horizontal and vertical) of all soil test pits and soil permeability
tests, both passing and failing, shall be reported to Stafford Township.
[2]
During all subsurface investigations
and soil test procedures, adequate safety measures shall be taken
to prohibit unauthorized access to the excavations at all times. It
is the responsibility of persons performing or witnessing subsurface
investigations and soil permeability tests to comply with all applicable
federal, state and local laws and regulations governing occupational
safety.
[3]
A minimum of two soil test pits
shall be excavated within the footprint of any proposed infiltration
BMP to determine the suitability and distribution of soil types present
at the site. Placement of the test pits shall be within 20 feet of
the basin perimeter, located along the longest axis bisecting the
BMP. For BMPs larger than 10,000 square feet in area, a minimum of
one additional soil test pit shall be conducted within each additional
area of 10,000 square feet. The additional test pit(s) shall be placed
approximately equidistant to other test pits, so as to provide adequate
characterization of the subsurface material. In all cases, where soil
and or groundwater properties vary significantly, additional test
pits shall be excavated in order to accurately characterize the subsurface
conditions below the proposed infiltration BMP. Soil test pits shall
extend to a minimum depth of eight feet below the lowest elevation
of the basin bottom or to a depth that is at least two times the maximum
potential water depth in the proposed infiltration BMP, whichever
is greater.
[4]
A soil test pit log shall be prepared
for each soil test pit. The test pit log shall, at a minimum, provide
the elevation of the existing ground surface, the depth and thickness
(in inches) of each soil horizon or substratum, the dominant matrix
or background and mottle colors using the Munsell system of classification
for hue, value and chroma, the appropriate textural class as shown
on the USDA textural triangle, the volume percentage of coarse fragments
(larger than two millimeters in diameter), the abundance, size, and
contrast of mottles, the soil structure, soil consistence, and soil
moisture condition, using standard USDA classification terminology
for each of these soil properties. Soil test pit logs shall identify
the presence of any soil horizon, substratum or other feature that
exhibits an in-place permeability rate of less than one inch per hour.
[5]
Each soil test pit log shall report
the depth to seasonally high water level, either perched or regional,
and the static water level based upon the presence of soil mottles
or other redoximorphic features, and observed seepage or saturation.
Where redoximorphic features, including soil mottles resulting from
soil saturation, are present, they shall be interpreted to represent
the depth to the seasonal high water table unless soil saturation
or seepage is observed at a higher level. When the determination of
the seasonally high water table shall be made in ground previously
disturbed by excavation, direct observation of the static water table
during the months of January through April shall be the only method
permitted.
[6]
Any soil horizon or substratum
which exists immediately below a perched zone of saturation shall
be deemed by rule to exhibit unacceptable permeability (less than
one inch per hour). The perched zone of saturation may be observed
directly, inferred based upon soil morphology, or confirmed by performance
of a hydraulic head test as defined at N.J.A.C. 7:9A-5.9.
[7]
Stormwater infiltration BMPs shall
not be installed in soils that exhibit artesian groundwater conditions.
A permeability test shall be conducted in all soils that immediately
underlie a perched zone of saturation. Any zone of saturation which
is present below a soil horizon which exhibits an in-place permeability
of less than 0.2 inch per hour shall be considered an artesian zone
of saturation unless a minimum one-foot-thick zone of unsaturated
soil, free of mottling or other redoximorphic features and possessing
a chroma of four or higher, exists immediately below the unsuitable
soil.
[8]
A minimum of one permeability test
shall be performed at each soil test pit location. The soil permeability
rate shall be determined using test methodology as prescribed in N.J.A.C.
7:9A-6.2 (tube permeameter test), 6.5 (pit-bailing test) or 6.6 (piezometer
test). When the tube permeameter test is used, a minimum of two replicate
samples shall be taken and tested. Alternative permeability test procedures
may be accepted by the approving authority, provided the test procedure
attains saturation of surrounding soils, accounts for hydraulic head
effects on infiltration rates, provides a permeability rate with units
expressed in inches per hour and is accompanied by a published source
reference. Examples of suitable sources include hydrogeology, geotechnical
or engineering text and design manuals, proceedings of American Society
for Testing and Materials (ASTM) symposia, or peer-review journals.
Neither a soil permeability class rating test, as described in N.J.A.C.
7:9A-6.3, nor a percolation test, as described in N.J.A.C. 7:9A-6.4,
are acceptable tests for establishing permeability values for the
purpose of complying with this section.
[9]
Soil permeability tests shall be
conducted on the most hydraulically restrictive horizon or substratum
to be left in place below the basin as follows: Where no soil replacement
is proposed, the permeability tests shall be conducted on the most
hydraulically restrictive horizon or substratum within four feet of
the lowest elevation of the basin bottom or to a depth equal to two
times the maximum potential water depth within the basin, whichever
is greater. Where soil replacement is proposed, the permeability tests
shall be conducted within the soil immediately below the depth of
proposed soil replacement or within the most hydraulically restrictive
horizon or substratum to a depth equal to two times the maximum potential
water depth within the basin, whichever is greater. Permeability tests
may be performed on the most hydraulically restrictive soil horizons
or substrata at depths greater than those identified above based upon
the discretion of the design or testing engineer. The tested infiltration
rate should then be divided by two to establish the soil's design
permeability rate. Such division will provide a one-hundred-percent
safety factor to the tested rate.
[10]
The minimum acceptable "tested
permeability rate" of any soil horizon or substratum shall be one
inch per hour. Soil materials that exhibit tested permeability rates
slower than one inch per hour shall be considered unsuitable for stormwater
infiltration. The maximum reportable tested permeability rate of any
soil horizon or substratum shall be no greater than 20 inches per
hour, regardless of the rate attained in the test procedure.
[11]
After all construction activities
have been completed on the development site and the finished grade
has been established in the infiltration BMP, a minimum of one permeability
test shall be conducted within the most hydraulically restrictive
soil horizon or substratum below the as-built BMP to ensure the performance
of the infiltration BMP is as designed. Hand tools and manual permeability
test procedures shall be used for the purpose of confirming BMP performance.
In addition, the infiltration BMP shall be flooded with water sufficient
to demonstrate the performance of the BMP. Test results shall be certified
to the Municipal Engineer.
[12]
A groundwater mounding analysis
shall be provided for each stormwater infiltration BMP. The groundwater
mounding analysis shall calculate the maximum height of the groundwater
mound based upon the volume of the maximum design storm. The professional
engineer conducting the analysis shall provide the Municipal Engineer
with the methodology and supporting documentation for the mounding
analysis used and shall certify to Stafford Township, based upon the
analysis, that the groundwater mound will not cause stormwater or
groundwater to break out to the land surface or cause adverse impact
to adjacent surface water bodies, wetlands or subsurface structures,
including, but not limited to, basements and septic systems. If there
is more than one infiltration BMP proposed, the model shall indicate
if and how the mounds will interact. The mounding analysis shall be
calculated using the most restrictive soil horizon that will remain
in place within the explored aquifer thickness unless alternative
analyses are authorized by the Municipal Engineer. The mounding analysis
shall be accompanied by a cross section of the infiltration BMP and
surrounding topography, and the mound analysis shall extend out to
the point(s) at which the mound intersects with the preexisting maximum
water table elevation.
(4)
Pretreatment measures for infiltration BMPs.
By reducing incoming velocities and capturing coarser sediments, pretreatment
can extend the functional life and increase the pollutant removal
capability of infiltration measures. Therefore, the installation of
pretreatment measures is recommended for all development sites. Pretreatment
measures may include, but are not limited to, the following:
(5)
Collection and conveyance.
(a)
Bicycle-safe inlet grates. Site development
plans that incorporate site design features that help 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 paragraph, "solid and floatable
materials" means sediment, debris, trash, and other floating, suspended,
or settleable solids.
[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.
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 basin floors.
[2]
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.
[3]
This standard does not apply:
[a]
Where the review agency determines
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;
[b]
Where flows from the water quality design storm as specified in Subsection D 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:
[c]
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 Subsection D of this section; or
[d]
Where the NJDEP 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.
(b)
Catch basins. Catch basins are storm drain inlets
with or without sumps. Catch basins may provide pretreatment for other
stormwater BMPs by capturing large sediments. The sediment and pollutant
removal efficiency of catch basins depends on the size of the sump
and the performance of routine maintenance to retain the available
sediment storage space in the sump. Where catch basins with sumps
are proposed, the minimum two-foot separation between the bottom of
the sump and seasonally high water table shall be provided.
(c)
Open or perforated conveyance piping. Where
adequate separation to the seasonal high water table exists, stormwater
from the development site may be conveyed to a stormwater basin via
a system of perforated pipes. These pipes may be made of PVC or corrugated
metal and are available with perforations of varying size and spacing.
Perforated pipe specifications shall be certified by a professional
engineer. A professional engineer shall certify that perforated conveyance
piping will not act to intercept the seasonal high water table and
convey groundwater to the stormwater basin. All open or perforated
stormwater conveyance systems shall be installed with a minimum separation
of two feet from the seasonal high water table.
I.
Additional sources for technical guidance.
(1)
NJDEP technical guidance sources.
(a)
New Jersey BMP Manual: available from the Division
of Watershed Management, New Jersey Department of Environmental Protection,
P.O. Box 418, Trenton, New Jersey 08625 or online at http://www.njstormwater.org.
(b)
NJDEP Stormwater Management Facilities Maintenance
Manual: available from the Division of Watershed Management, New Jersey
Department of Environmental Protection, P.O. Box 418, Trenton, New
Jersey 08625 or online at http://njedl.rutgers.edu/ftp/PDFs/1188.pdf.
(2)
Additional guidance sources.
(a)
New Jersey Pinelands Commission, P.O. Box 7,
15 Springfield Road, New Lisbon, New Jersey 08064; phone: 609-894-7300;
website: http://www.state.nj.us/pinelands.
(b)
State Soil Conservation Committee Standards
for Soil Erosion and Sediment Control in New Jersey: available from
all state soil conservation districts, including Ocean County Soil
Conservation District, 714 Lacey Road, Forked River, New Jersey 08731;
phone: 609-971-7002; fax: 609-267-3347; website: http://ocscd.org.
(c)
State soil conservation districts.
(d)
New Jersey Department of Transportation, P.O.
Box 600, Trenton, New Jersey 08625-0600; phone: 609-530-3536; website:
http://www.state.nj.us/transportation.
[Amended 9-20-1988 by Ord. No. 88-74; 10-18-1988 by Ord. No. 88-76; 10-18-1988 by Ord. No.
88-83; 1-31-1989 by Ord. No. 89-10; 2-21-1989 by Ord. No. 89-20; 3-21-1989 by Ord. No. 89-26; 7-11-1989 by Ord. No. 89-48; 9-5-1989 by Ord. No. 89-56; 11-21-1989 by Ord. No. 89-66; 3-6-1990 by Ord. No. 90-21; 3-20-1990 by Ord. No. 90-23; 11-1-1990 by Ord. No. 90-63; 2-19-1991 by Ord. No. 91-13; 11-26-1991 by Ord. No.
91-68; 5-2-1995 by Ord. No. 95-46; 6-13-1995 by Ord. No. 95-54; 10-17-1995 by Ord. No.
95-95; 12-16-1997 by Ord. No. 97-101; 6-23-1998 by Ord. No. 98-44]
A.
The off-site stormwater sewers may not discharge into
sanitary sewer systems. The sanitary sewer system may not discharge
into the stormwater system.
B.
Nonpoint source pollution from urban runoff can be
minimized by eliminating direct discharge into surface waters. Recharging
stormwater to the ground helps maintain groundwater supplies but may
have an impact on groundwater quality if not properly treated. The
amount of pollutants in the stormwater runoff discharge to surface
water bodies shall be minimized, and the impact of the discharge shall
satisfy the applicable Department of Environmental Protection established
surface water quality standards of the receiving water body, using
measures such as sediment traps, oil skimmers and vacuum street cleaners.
Pollutants of major concern include petrochemicals and heavy metals
from vehicle spillage, deicing salts, aromatic hydrocarbons from blacktop
paving, pesticides, herbicides and fertilizers from lawn and garden
areas. Separation of stormwater shall be required to allow for direct
recharge using dry wells of pollutant-free runoff from places such
as rooftops. Runoff contaminated with metals, oils, grease or animal
waste should be treated by vegetal filtration prior to recharge.
C.
If off-site discharge is permitted by the Board, then
the volume and quality of stormwater discharged off site shall be
controlled so as not to cause any adverse impacts to the receiving
water body and must conform to the requirements of the Department
of Environmental Protection Stream Encroachment Permit Program and
rules. Where practical, stormwater should not be recharged into soils
which are classified as excessively or somewhat excessively drained
nor into areas identified as deep aquifer recharge areas. The application
of road oil, which is sometimes used as a dust control measure, shall
be prohibited.
D.
Coastal development shall avoid discharging of runoff
to groundwater on high-permeability moist soils to the maximum extent
possible.
E.
All stormwater management for nonresidential development must be developed in accordance with RSIS as set forth in § 130-74B. However, no applicant for a nonresidential development shall be compelled to exceed a maximum of 60% of the capacity of the stormwater infiltration system as underground infiltration.
F.
Approval of any swale, holding pond or basin will
be contingent upon approval of the Mosquito Commission.
G.
The construction of any facility utilized to control
on-site runoff or drainage should be designed to create a more aesthetic
and pleasing environment. To accomplish this, the municipality will
require that plants native to the area and soil be used for landscaping
to the maximum extent feasible. Special preference will be given to
those species of trees and plants which have known pollutant removal
abilities. When other ornamental plants are used, they should be of
types which are compatible with the natural environment. Terrestrial
vegetation stabilizes soil, retards erosion and runoff, promotes infiltration
of surface water, reduces the force of wind and adds to aesthetic
values for recreation and domestic life. Trees release life-giving
oxygen, filter particulate soluble pollutants and provide foods and
fuel with no energy input by man.
H.
A revegetation or landscaping plan is to be submitted
with each application site plan utilizing any runoff or drainage control.
This plan must include information on the size of the area to be cleared,
soil conditions, a description of the existing vegetation and a description
of the vegetation which will be planted following clearing of any
subsequent development. Season permitting, revegetation shall follow
immediately after clearing or development is completed. Soil stabilization
is required.
I.
Surface water runoff shall not be directed in such
a way as to increase the volume and rate of discharge into any surface
water body or adjoining property from that which existed prior to
development of the parcel.
J.
All development that utilizes wet ponds for stormwater
detention/retention purposes shall be required to utilize the water
supply in said wet pond for lawn irrigation, if proposed.
[Added 9-17-2002 by Ord. No. 2002-80]
[1]
Editor's Note: Former § 130-77.1,
Stormwater design calculations, added 7-11-1989 by Ord. No. 89-48,
as amended 9-5-1989 by Ord. No. 89-56, was repealed 11-21-1989 by
Ord. No. 89-65.
[Added 4-19-2010 by Ord. No. 2010-12]
A.
Purpose. The purpose of this section is to require the retrofitting
of existing storm drain inlets which are in direct contact with repaving,
repairing, reconstruction, 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,
so as to protect public health, safety and welfare, and to prescribe
penalties for the failure to comply.
B.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
PERSON
STORM DRAIN INLET
WATERS OF THE STATE
Definitions. For the purpose of this section, the following terms,
phrases, words, and their derivations shall have the meanings stated
herein unless their use in the text of this section 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.
A conveyance or system of conveyances (including roads with
drainage systems, municipal streets, catch basins, curbs, gutters,
ditches, man-made channels, or storm drains) that is owned or operated
by the Township or other public body and is designed and used for
collecting and conveying stormwater.
Any individual, corporation, company, partnership, firm,
association, or political subdivision of this state subject to municipal
jurisdiction.
An opening in a storm drain used to collect stormwater runoff
and includes, but is not limited to, a grate inlet, curb-opening inlet,
slotted inlet, and combination inlet.
The ocean and its estuaries, all springs, streams and bodies
of surface water or groundwater, whether natural or artificial, within
the boundaries of the State of New Jersey or subject to its jurisdiction.
C.
Prohibited conduct. 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:
D.
Design standard. Storm drain inlets identified in Subsection C above 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 Subsection D(3) below.
(1)
Grates.
(a)
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:
[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 (April 1996);
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.
(b)
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 basin floors.
(2)
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 7.0 square inches, or be no greater than 2.0 inches across the
smallest dimension.
(3)
This standard does not apply:
(a)
When 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; or
(b)
When 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:
(c)
Where flows are conveyed through a trash rack that has parallel
bars with one-inch spacing between the bars; or
(d)
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.
E.
Enforcement. This section shall be enforced by the Township Police
Department and/or other municipal officials of the Township.
F.
Penalties. Any person(s) who is found to be in violation of the provisions
of this section 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.
[1]
Editor's Note: Former § 130-78,
Stormwater disposal system standards, as amended, was repealed 6-23-1998
by Ord. No. 98-44.
[Amended 10-17-1995 by Ord. No. 95-95; 12-16-1997 by Ord. No. 97-101; 6-23-1998 by Ord. No. 98-44]
A.
Responsibility for operation and maintenance of stormwater
facilities, including periodic removal and disposal of accumulated
particulate material and debris, but not limited to the following:
visual inspection of all system components at least twice each year;
vacuuming of all storm sewer inlets once every six months (frequency
of vacuuming may be adjusted to once a year if first year maintenance
records indicate that sediment and debris accumulation is insignificant);
reverse flushing and vacuuming if system inspections indicate significant
accumulation of sediment in the pipes; and periodic removal and disposal
of other material and debris, shall remain with the owner or owners
of the property, with permanent arrangements that it shall pass to
any successive owner, unless assumed by a governmental agency. If
portions of the land are to be sold, legally binding arrangements
shall be made to pass the basic responsibility to successors in title.
These arrangements shall designate for each project the property owner,
governmental agency or other legally established entity to be permanently
responsible for maintenance, hereinafter in this section referred
to as the "responsible person."
B.
Prior to granting approval to any project subject
to review under this article, the applicant shall enter into an agreement
with the municipality to ensure the continued operation and maintenance
of the facility. This agreement shall be in a form satisfactory to
the Municipal Attorney and may include but may not necessarily be
limited to personal guaranties, deed restrictions, covenants and bonds.
In cases where property is subdivided and sold separately, a homeowners'
association or similar permanent entity should be established as the
responsible entity, absent an agreement by a governmental agency to
assume responsibility.
C.
In the event that the facility becomes a danger to
public safety or public health, or if it is in need of maintenance,
the municipality shall so notify, in writing, the responsible person.
From that notice, the responsible person shall have 14 days to effect
such maintenance and repair of the facility in a manner that is approved
by the Township Engineer or his designee. If the responsible person
fails or refuses to perform such maintenance and repair, the municipality
may immediately proceed to do so and shall bill the cost thereof to
the responsible person.
D.
In the Pinelands Area, all applicants shall provide
a four-year maintenance guaranty for the entire stormwater management
system.
A.
Traffic circulation. The site plan shall provide a
safe and efficient circulation system for the movement of vehicles
and pedestrians off the site and on the tract.
B.
Access driveways.
(1)
All entrance and exit driveways shall be located so
as to afford maximum safety and minimum disruption of traffic on the
street.
(2)
The dimensions of entrance and exit driveways and
internal roads shall be adequate to accommodate the volume and character
of vehicles anticipated to be using the site. The required dimensions
for driveways and interior roads shall be as follows:
[Amended 11-1-1990 by Ord. No. 90-63]
(3)
Driveways serving a development having 50 or fewer
parking spaces may use a one-and-one-half-inch-high depressed curb
and concrete apron driveway and concrete walk. Those having more than
50 parking spaces, however, shall use curb returns of not less than
15 feet minimum nor 30 feet maximum in radius, except as otherwise
directed by the New Jersey Department of Transportation or as necessary
to accommodate the large-wheel-base vehicles associated with the safety
or operation of the site.
[Amended 8-16-1988 by Ord. No. 88-69; 11-1-1990 by Ord. No. 90-63; 11-5-2007 by Ord. No. 2007-99]
(4)
Any vertical curve on a driveway shall be flat enough
to prevent the dragging of any vehicle undercarriage.
(5)
Driveway grades shall adhere to the following: 3/4%
minimum to 10% maximum. A maximum slope of 2% for the first 20 feet
from the street line shall be maintained.
(6)
Curb cuts to a public street shall not be closer than
25 feet to the point of curvature or point of tangent of the corner
radius curb of an intersecting street, or, if required parking spaces
exceed 100, then the driveway curb cuts shall not be closer than 100
feet to the point of curvature or point of tangent of the corner radius
of the intersecting street.
(7)
The number of permitted driveways provided from a
site shall be related to the type of street and traffic volume thereon
and the number and location of other access points therefrom.
(8)
Driveway pavement shall extend to the paved portion
of the street with which it connects and shall be constructed with
a minimum of two inches of stabilized base course and 1 1/2 inches
of FABC surface course or an approved equal.
(9)
Driveways are to be curbed on both sides.
(10)
Within all residential zones within the Township,
with exception of the RR Zones, the minimum side yard setback for
a driveway shall be:
[Amended 6-14-1994 by Ord. No. 94-51]
(11)
All pavement area shall be constructed with
six inches of Type 2, Class A or B, gravel subbase, in addition to
bituminous stabilized base course and FABC surface course as specified,
or an approved equal.
(12)
In parking lots having a capacity of more than
100 cars, a main access drive shall be provided from points of ingress
and egress. No parking shall be permitted on the main access drive,
nor shall it serve as an access aisle to adjacent parking spaces.
(13)
All access drives shall provide a minimum outside
turning radius of 30 feet, unless as a fire lane, in which case they
shall provide a minimum outside turning radius of 50 feet.
[Amended 11-1-1990 by Ord. No. 90-63]
(14)
In R-75 and R-90 Zones, the maximum width of a driveway depression for a two-car capacity driveway shall be 23 feet, in accordance with the provisions of § 187-13. (See Engineering Plat Detail, Figures 14 and 15.[1])
[Added 1-16-1996 by Ord. No. 96-11; amended 12-16-1997 by Ord. No. 97-101]
[1]
Editor's Note: Engineering Plat Detail, Figures 14 and 15, are included as attachments to this chapter.
C.
Access Management Plan consistency. The design and
location of all access driveways to Route 72 shall be consistent with
the Route 72 Access Management Plan adopted by the Township Council
on June 10, 1997, and as may be amended.
[Added 6-10-1997 by Ord. No. 97-47]
A.
Design requirements.
(1)
The number and size of all parking and loading spaces shall meet the requirements of this section. All residential development shall comply with § 130-81E with regard to the number of parking spaces, parking space size, parking lot access and circulation and aisle widths. All remaining design requirements of residential parking lots, including but not limited to lighting, landscaping, location and setbacks, shall be in compliance with this section and this chapter,
[Amended 6-24-1997 by Ord. No. 97-51]
(2)
Any off-street loading spaces shall have a minimum
height clearance of 15 feet and be designed in accordance with the
following criteria:
Loading Space
|
Apron/Aisle Length
| |||
---|---|---|---|---|
Length
(feet)
|
Width
(feet)
|
(90º)
(feet)
|
(60º)
(feet)
| |
60
|
10
|
72
|
66
| |
60
|
12
|
62
|
57
| |
60
|
14
|
60
|
54
|
(3)
Ingress to and egress from a parking or loading area
shall be paved and shall include turning areas to assure ease of mobility,
ample clearance and the safety of vehicles and pedestrians.
(4)
Parking areas serving light-duty vehicles shall be
constructed with a minimum of two inches of stabilized base course
and 1 1/2 inches of FABC surface course, or an approved equal, and
shall be sufficiently drained so as to prevent an accumulation of
water on the site.
(5)
All pavement areas shall be constructed with six-inch-thick
Type 2, Class A or B, gravel subbase, in addition to the bituminous
stabilized base course and FABC surface course as specified.
(6)
A parking area shall be illuminated if used after sunset, and such illumination shall provide a minimum of five tenths (0.5) lumen per square foot throughout the area and be shielded from adjoining streets or properties. The location of the parking lot light structure shall be in accordance with the requirements of § 130-51G(6).
[Amended 9-18-1990 by Ord. No. 90-53]
(7)
Off-street parking and loading areas shall be designed
to prevent the maneuvering of vehicles into or out of parking or loading
spaces within any portion of any street.
(7.1)
|
The plan shall include both inside curve radius
and outside curve radius for all curves on the site. This is to include
the entrances to and exits from fire lanes, loading areas, parking
aisles and all entrances and exits from the site. The minimum curve
radius shall meet the requirements as outlined in the Design Vehicles
and Minimum Turning Path Chart. (See Engineering Plat Detail, Figure
10.[1])
[Added 3-7-1989 by Ord. No. 89-25; amended 12-16-1997 by Ord. No. 97-101] |
[1]
Editor's Note: Engineering Plat Detail, Figure 10, is included as an attachment to this chapter.
(8)
Parking dimensions shall meet the following standards:
(a)
Each dead-storage bay of an off-street parking
space may be perpendicular with the aisle, parallel with the aisle
or at any angle between 60º and 90º.
(b)
No angle parking layout shall be permitted
with an angle less than 60º. The following are minimum stall
and aisle dimensions:
[Amended 8-21-1990 by Ord. No. 90-46; 11-1-1990 by Ord. No. 90-63; 11-5-2007 by Ord. No. 2007-99]
Type
|
Aisle Width
(feet)
|
Stall
Dimensions
(feet)
| |
---|---|---|---|
90-degree parking
|
24
|
9 x 18
| |
60-degree parking
|
18
|
9 x 18
| |
Parallel parking
| |||
1-way operation
|
12
|
7 x 23
| |
2-way operation
|
24
|
7 x 23
|
(9)
Parking and loading space stripes shall be four inches
wide using white reflective paint. Hatch lines shall be on an angle
of 45° and shall consist of stripes four inches wide, two feet
on center. The hatch lines shall be white reflective paint, except
those hatch lines utilized to separate directions of traffic, which
shall be yellow reflective paint.
[Amended 11-5-2007 by Ord. No. 2007-99]
(10)
All parking and loading areas are to be curbed.
(11)
No paved area shall be closer to any property
line than 15 feet, unless otherwise prohibited herein.
(12)
The maximum grade permitted in parking areas
shall be 6%; the minimum grade permitted in parking areas shall be
three-fourths percent (3/4%).
(13)
Location of parking. Where parking is permitted
between the front building line and the street line, a safety island
or raised median separating the public street from the parking area
shall be provided for intermediate and large parking in accordance
with the following minimum requirements:
(a)
The width of the safety island shall be that
width between the proposed street curbline and a point five feet inside
the property line. When this width is less than 25 feet, the parking
area shall be reduced to provide a minimum width for the safety island
of 15 feet. All required tree and shrub plantings shall be planted
on the on-site portion of the safety island, with the exception of
streetscape plantings as required herein.
[Amended 1-31-1989 by Ord. No. 89-10]
(b)
Safety islands shall be raised a minimum of
six inches above the adjacent parking area.
(14)
Small parking areas. Parking lots having 10
or fewer spaces shall comply with all applicable requirements of this
chapter and shall also be bordered by a fifteen-foot unbroken, landscaped
strip along side property lines from the street line to the rear lot
line, unless the Board, for good cause, shall waive such requirements;
provided, however, that for parking lots having 10 or fewer spaces,
only a two-inch compacted thickness bituminous concrete FABC surface
course on six-inch compacted gravel base course will be required.
(15)
Intermediate-size parking areas. Parking areas
having more than 10 spaces but fewer than 101 spaces shall be designed
to fulfill the following minimum requirements:
[Amended 2-20-1996 by Ord. No. 96-27]
(a)
A safety island or raised median shall be provided
as herein described.
(b)
Not more than one two-way access driveway or
two one-way access driveways shall be provided on any one street unless
approval otherwise is obtained from the body, agency or official having
jurisdiction over the plan.
(c)
Design of the parking area shall include planting islands which shall be a minimum of 10% of the total parking area. These islands shall include planting as required by § 130-51. Parking bays shall be separated from access or circulation drives by a planting island (of ten-foot minimum width) or area for the full width of a bay at the ends of rows.
[Added 10-18-1988 by Ord. No. 88-76; amended 1-31-1989 by Ord. No. 89-10]
(16)
Large parking areas. Parking lots which have
a capacity for parking more than 100 vehicles shall incorporate the
following minimum design standards:
[Amended 10-18-1988 by Ord. No. 88-76; 1-31-1989 by Ord. No. 89-10; 9-19-1995 by Ord. No. 95-91]
(a)
No parking stalls which shall require the use
of the entrance and exit driveways as access aisles shall be permitted.
(c)
All directional (one-way) driveways shall be
marked by appropriate signs facing all peripheral service roads serving
the property as well as the parking area.
(d)
No driveway shall be located less than 30 feet
from the existing drive.
(e)
The design of the parking area shall include planting islands which shall be a minimum of 10% of the total parking area. These islands shall include planting as required by § 130-51. Parking bays shall be separated from access or circulation drives by a planting island (of ten-foot minimum width) or area for the full width of a bay at the ends of rows. The parking lot shall, where possible, be subdivided into modular parking bays or lots of not greater than 50 spaces each. These modules shall be separated by a landscape island of a minimum ten-foot width. When appropriate, pedestrian walkways shall be provided on these islands. A single line or row within a bay should be no more than 20 spaces in length.
(f)
The parking area shall contain location markers
clearly visible from all areas of the parking lot. Location markers
shall be placed, at a minimum, at one marker per 25 parking stalls.
(17)
Intermediate and large parking areas shall be
designed so as to provide for a fire zone adjacent to the building(s).
Parking shall not be permitted in a fire zone. Fire zones shall be
at least 20 feet in width and may be used for on-site traffic circulation
but shall have a turning radius of 50 feet at any entrance and exit
of the site. These zones shall be labeled "Fire Zones, No Stopping
or Standing."
(18)
Parking for the handicapped. (See Engineering
Plat Detail, Figures 11, 12 and 13[3].)
[Amended 3-7-1989 by Ord. No. 89-25; 2-1-1994 by Ord. No. 94-17; 12-16-1997 by Ord. No.
97-101]
(a)
Parking spaces for the handicapped shall be
located to provide convenient access to building entrances by way
of depressed curbs and ramps in accordance with state regulations.
All handicapped spaces shall comply with state design standards. The
number of spaces to be provided shall be determined by the following
table:
Total
Parking in Lot
|
Required Minimum Number of
Accessible Spaces
| |
---|---|---|
1 to 25
|
1
| |
26 to 50
|
2
| |
51 to 75
|
3
| |
76 to 100
|
4
| |
101 to 150
|
5
| |
151 to 200
|
6
| |
201 to 300
|
7
| |
301 to 400
|
8
| |
401 to 500
|
9
| |
501 to 1,000
|
2% of total
| |
1,001 and over
|
20, plus 1 for each
| |
100 over 1,000
|
[1]
One in every eight accessible spaces, but not less than one, shall be served by an access aisle 96 inches wide minimum and shall be designated "Van-Accessible" as required by Subsection A(18)(e). The vertical clearance at such spaces shall comply with Subsection A(18)(f). All such spaces may be grouped on one level of a parking structure.
[2]
If passenger loading zones are provided, then at least one passenger loading zone shall comply with Subsection A(18)(g).
[3]
At facilities providing medical care and other services for persons with mobility impairments, parking spaces complying with Subsection A(18)(b) through (g) shall be provided in accordance with Subsection A(18)(a), except as follows:
[a]
Outpatient units and facilities:
10% of the total number of parking spaces provided serving each such
outpatient unit or facility.
[b]
Units and facilities that specialize
in treatment or services for persons with mobility impairments: 20%
of the total number of parking spaces provided serving each such unit
or facility.
(c)
Location. Accessible parking spaces serving
a particular building shall be located on the shortest accessible
route of travel from adjacent parking to an accessible entrance. In
parking facilities that do not serve a particular building, accessible
parking shall be located on the shortest accessible route of travel
to an accessible pedestrian entrance of the parking facility. In buildings
with multiple accessible entrances with adjacent parking, accessible
parking spaces shall be dispersed and located closest to the accessible
entrances.
(d)
Parking spaces. Accessible parking spaces shall
be at least eight feet wide. Parking access aisles shall be part of
an accessible route to the building or facility entrance and shall
comply with accessible route requirements of the Barrier Free Subcode
of the New Jersey Uniform Construction Code (UCC). Two accessible
parking spaces may share a common aisle (see Figure 11[4]). Parked vehicle overhangs shall not reduce the clear
width of an accessible route. Parking spaces and access aisles shall
be level with surface slopes not exceeding one to fifty (1:50) [2%]
in all directions.
[4]
Editor's Note: Figure 11 is included as an attachment to this chapter.
(e)
Signage. Accessible parking spaces shall be designated as reserved by a sign showing the symbol of accessibility. Spaces complying with Subsection A(18)(a) shall have an additional sign "Van-Accessible" mounted below the symbol of accessibility. Such signs shall be located so they cannot be obscured by a vehicle parking in the space.
(f)
Vertical clearance. A minimum vertical clearance of 9.5 feet shall be provided at accessible passenger loading zones and along at least one vehicle access route to such areas from site entrance(s) and exit(s). At parking spaces complying with Subsection A(18)(a), a minimum vertical clearance of 98 inches at the parking space and along at least one vehicle access route to such spaces from site entrance(s) and exit(s) shall be provided.
(g)
Passenger loading zones. Passenger loading zones
shall provide an access aisle at least five feet wide and 20 feet
long adjacent and parallel to the vehicle pull-up space (see Figure
11[5]). If there are curbs between the access aisle and the
vehicle pull-up space, then a curb ramp complying with the New Jersey
UCC shall be provided. Vehicle standing spaces and access aisles shall
be level with surface slopes not exceeding one to fifty (1:50) [2%]
in all directions.
[5]
Editor's Note: Figure 11 is included as an attachment to this chapter.
[3]
Editor's Note: Engineering Plat Detail, Figures 11 and 12, are included as attachments to this chapter; Figure 13 was repealed 12-6-2005 by Ord. No. 2005-105.
(19)
Landscaping. Landscaping in parking and loading
areas shall be shown on the landscaping plan. Trees shall be staggered
and/or spaced so as not to interfere with driver vision and have branches
no lower than six feet. All areas between the parking area and the
building shall be landscaped.
[Added 10-18-1988 by Ord. No. 88-76]
(20)
Any parking area constructed of crushed stone
or crushed shell material shall provide a concrete apron. The concrete
apron shall extend the full width of driveway and extend at least
20 feet behind sidewalk in order to minimize the tracking of material
from parking area onto the sidewalk and roadway.
[Added 11-5-2007 by Ord. No. 2007-99]
B.
Minimum parking requirements shall be as follows:
[Amended 9-20-1988 by Ord. No. 88-74; 10-18-1988 by Ord. No. 88-83; 2-21-1989 by Ord. No. 89-21; 3-21-1989 by Ord. No. 89-28; 4-4-1989 by Ord. No. 89-29; 8-1-1989 by Ord. No. 89-53; 11-1-1990 by Ord. No. 90-62; 1-19-1993 by Ord. No. 93-01; 6-24-1997 by Ord. No. 97-51; 7-3-2001 by Ord. No. 2001-52]
(1)
Automotive repair garage or body shop: four parking
spaces per each bay.
(2)
Automotive sales and service: three parking spaces
per bay, plus one parking space for each 400 square feet of gross
floor area shall be provided for customer and employee parking. These
areas shall be in addition to areas utilized for display and storage
of vehicles. Site plans shall specify which parking spaces are designated
for customers, employees, display and storage.
(3)
Automotive service station:
(a)
Gas only: four parking spaces.
(b)
Gas and convenience store: four parking spaces,
plus two parking spaces per 1,000 square feet of gross floor area.
(c)
Gas, convenience store and service bays: four
parking spaces, plus two parking spaces for each bay, plus two parking
spaces per 1,000 square feet of gross floor area.
(d)
Gas, convenience store and car wash: four parking
spaces, plus two parking spaces per 1,000 square feet of gross floor
area, plus six vehicle storage for the car wash.
(4)
Banks: five parking spaces per 1,000 square feet,
plus seven vehicle storage per window for drive up.
(5)
Bar: 15 parking spaces per 1,000 square feet of gross
floor area or 0.5 parking spaces per seat.[6]
[6]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(6)
Barber- and beauty shop: three parking spaces for
each beautician chair or two parking spaces for each barber chair
(if known), but not fewer than one parking space per 200 square feet
of gross floor area of gross floor area.[7]
[7]
Editor's Note: "An Approach to Determining
Parking Demand," Robert J. Boyland and Neil S. Konig.
(7)
Car washes: four parking spaces, plus off-street vehicle
storage (space equal to at least 10 spaces per washing lane). For
self-wash or self-service car washes, off-street storage shall be
three spaces per washing lane.
(8)
Church, synagogue temple or mosque: 0.33 parking space
per seat.[8]
[8]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(9)
Long-term care, assisted living and residential health
care facilities and continuing care retirement communities.
(a)
Long term care, assisted living, residential
health care facilities: one parking space for each three beds based
on its licensed bed capacity.
(b)
Parking facilities for the residents, employees,
visitors of the continuing care requirement community shall be based
on the following:
[1]
Five-tenths parking space per unit per independent
living unit.
[2]
One parking space per five beds for health care
beds.
[3]
One parking space per employee for day shift
employees.
[4]
One tenth space per 10 independent living units
for visitors for independent living units.
(9.1)
|
Convenience store: 6.5 spaces per 1,000 square
feet of gross floor area.
[Added 11-1-2005 by Ord. No. 2005-96] |
(10)
Fast-food establishment: one parking space for
each 75 square feet of gross floor area.[9] If located within a shopping center, then one parking
space for each 100 square feet of gross floor area.[10]
(a)
With drive-through: 0.3 parking spaces per seat,
plus eight vehicle storage per drive-through lane.[11]
[11]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(b)
Without drive-through: 0.5 parking spaces per
seat.[12]
[12]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(11)
Funeral home: five spaces, plus one parking
space per 75 square feet of gross floor area of public area.
(13)
Hospital: three spaces per bed, plus six spaces
per 1,000 square feet of outpatient clinic and/or emergency services
area, plus four spaces per 1,000 square feet of professional and/or
administrative office space.
[Amended 11-1-2005 by Ord. No. 2005-96]
(14)
Hotel or motel or bed-and-breakfast: one parking
space per room, plus 0.33 parking space per employee, plus 0.33 parking
space per seat in a banquet/conference room.
(15)
Industrial uses:
(a)
Assembly operations: 1.25 parking spaces per
1,000 square feet of gross floor area.[14]
[14]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(b)
Industrial, light: 2.1 parking spaces per 1,000
square feet of gross floor area or 1.5 parking spaces per employee
of largest shift.[15]
[15]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(c)
Manufacturing: 1.5 parking spaces per 1,000
square feet of gross floor area or 0.75 parking space per employee
of largest shift.
(d)
Research lab: 2.5 parking spaces per 1,000 square
feet of gross floor area or 1.5 parking space per employee of largest
shift.
(e)
Warehouse/high tech or flex space: one parking
space per 5,000 square feet of gross floor area or 1.5 parking space
per employee.
(16)
Library or museum: 3.3 parking spaces per 1,000
square feet of gross floor area.[16]
[16]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(17)
Motor vehicle rental facility: four spaces per
1,000 square feet of gross floor area, plus one space per 2,000 square
feet of vehicle storage area, plus adequate storage for rental vehicles.
[Added 11-1-2005 by Ord. No. 2005-96]
(18)
Office uses:
(a)
General: four parking spaces per 1,000 square
feet of gross floor area.
(b)
Medical office/surgery center: for facilities
less than 5,000 square feet, 10 spaces, plus four spaces per 1,000
square feet of gross floor area. For facilities 5,000 square feet
or greater, six spaces per 1,000 square feet of gross floor area.
[Amended 11-1-2005 by Ord. No. 2005-96]
(18.1)
|
Pharmacy: 4.5 spaces per 1,000 square feet of
gross floor area. Pharmacies with a drive-through, 4.5 spaces per
1,000 square feet of gross floor area, plus storage for three vehicles
at the drive-through.
[Added 11-1-2005 by Ord. No. 2005-96] |
(19)
Recreational uses:
(a)
Bowling alley: six parking spaces per lane.
(b)
Golf course: eight parking spaces per hole.[17]
[17]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(c)
Health club: 8.5 parking spaces per 1,000 square
feet of gross floor area.[18]
[18]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(d)
Marina: 1.5 parking space per boat slip.
(e)
Miniature golf: 1.5 parking space per hole.[19]
[19]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(f)
Pool hall/arcade: four parking spaces per 1,000
square feet of gross floor area.[20]
[20]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(g)
Skating rink: 4.75 parking spaces per 1,000
square feet of gross floor area.[21]
[Amended 12-20-2005 by Ord. No. 2005-109]
[21]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(h)
Stadium: 0.33 parking space per seat.[22]
[22]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(i)
Swimming pool: 0.25 parking space per person
in pool.[23]
[23]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(j)
Tennis court: three parking spaces per court.[24]
[24]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(21)
Retail store, freestanding: four parking spaces
per 1,000 square feet of gross leasable area.[25]
[25]
Editor's Note: "Nonresidential Site Plan Model
Ordinance and Commentary," Carol Walker, David Listokin, Howard Schoor,
Carolyn Neighbor and Henry Ney, Rutgers, The State University for
Urban Policy Research, prepared for the New Jersey Department of Community
Affairs.
(22)
Schools:
(a)
Nursery/day care: one space per employee, plus
one space per 10 students, plus one dropoff space per 10 students.
(b)
Elementary: one space per employee, plus one
space per five seats in auditorium.
(c)
High school: one space per employee, plus one
space per five students.
(d)
College: one space per staff, plus 0.75 space
per student.
(23)
Shopping center (includes neighborhood, community,
regional and superregional):[26]
(a)
Less than or equal to 400,000 square feet of
gross floor area: four parking spaces per 1,000 square feet of gross
leasable area; adjust upward for theaters and restaurants.
(b)
Greater than 400,000 square feet of gross floor
area; 4.5 parking spaces per 1,000 square feet of gross leasable area.
[26]
Editor's Note: "Parking Requirements for Shopping
Centers" Urban Land Institute.
(25)
Supermarket: six parking spaces per 1,000 square
feet of gross floor area.
(26)
Theater: 0.4 spaces per seat.
(27)
Veterinary clinics or hospitals or animal care
facilities: one space per 333 square feet of gross floor area.
(28)
The parking space required for a use not specifically
mentioned herein shall be the same as required for a use of similar
nature as determined by the Board, based upon that use or enumerated
herein which is most similar to the proposed use. If there is no use
enumerated herein having sufficient similarity to the proposed use
to enable the Board to establish rational parking requirements, the
Board may, in its discretion, direct the applicant to furnish the
Board with such data as may be necessary to enable the Board to establish
rational parking requirements.
(29)
Off-street parking requirements for residential
land uses:[27]
Residential Use
Requirements
|
Off-Street Parking
(spaces)
| |
---|---|---|
Single family
| ||
2 bedroom
|
1.5
| |
3 bedroom
|
2
| |
4 bedroom
|
2.5
| |
5 bedroom
|
3
| |
Garden apartment
| ||
1 bedroom
|
1.8
| |
2 bedroom
|
2
| |
3 bedroom
|
2.1
| |
Townhouse
| ||
1 bedroom
|
1.8
| |
2 bedroom
|
2.3
| |
3 bedroom
|
2.4
| |
Mobile home
| ||
1 bedroom
|
1.8
| |
2 bedroom
|
2
|
[27]
Editor's Note: "Residential Site Improvement
Standards" New Jersey Site Improvement Advisory Board.
(30)
Miscellaneous criteria calculating the amount
of parking required. In computing the number of above-required parking
spaces, the following rules shall govern:
(a)
Where fractional space results, the required
number shall be construed to be the nearest whole number.
(b)
Nothing in the above requirements shall be construed
to prevent the joint use of off-street parking facilities by two or
more uses, provided that the total of such spaces shall not be fewer
than the sum of the requirements for various individual uses computed
separately by the above requirements.
(c)
All required parking facilities shall be located
on the same lot or parcel as the structure or use they shall serve.
In the case of nonresidential uses, parking facilities may be provided
on other lots or parcels but shall not be greater than 300 feet from
the structure or use they shall serve.
(d)
Where special traffic problems exist, the Planning
Board may require a special survey of conditions, at the applicant's
cost, and require the location of entrances and exits in the parking
lot to be altered to minimize congestion and hazards.
C.
Minimum loading requirements. Adequate off-street
loading and maneuvering space shall be provided for every retail or
wholesale commercial and/or industrial use. The following standards
shall be applied:
(1)
Required number of off-street loading spaces:
(a)
Schools: one loading space.
(c)
Funeral homes: one loading space.
(d)
Office, hotel, retail service, wholesale, warehouse,
manufacturing or processing or repairing uses with a gross floor area:
(e)
Off-street loading facilities for separate uses
may be provided jointly if the total number of spaces so provided
is not less than the sum of the separate requirements for each use,
and provided that all regulations governing the location of accessory
spaces in relation to the use served are adhered to and that no accessory
space or portion thereof shall serve as a required space for more
than one use.
(2)
There shall be a minimum of one trash/refuse enclosure and collection location, separate from any parking or loading area and located in a separate enclosure area. The refuse collection or enclosure area shall be totally enclosed and screened from view in accordance with the requirements in § 130-62C, screening of refuse area. The refuse enclosure area may be located adjacent or within the general loading area(s), provided that containers or enclosures in no way interfere with or restrict loading and unloading.
[Amended 12-20-1988 by Ord. No. 88-95]
(3)
Where any use is located on a tract of at least 50
acres and no portion of a loading area, including maneuvering areas,
is closer than 200 feet to any property line and where the length
of the driveway connecting the loading area to the street is at least
300 feet, the number of off-street loading spaces may be less than
the number required by the schedule above, provided that the applicant,
as part of the site plan, shall document to the approving authority
how the number of spaces to be provided will be adequate to meet the
needs of the specific use proposed.
(4)
Access to truck standing, loading and unloading areas
may be provided directly from a public street or alley or from any
right-of-way that will not interfere with public convenience and will
permit orderly and safe movement of truck vehicles.
(5)
Unless otherwise permitted, fire zones shall not be
used as standing, loading or unloading areas.
(6)
Loading areas, as required under this section, shall
be provided in addition to off-street parking spaces and shall not
be considered as supplying off-street parking spaces.
(7)
No off-street loading or unloading area shall be permitted
in any required front yard area.
D.
Location of parking and loading areas.
(1)
Loading spaces shall be located on the same lot as
the use being served, may abut the building being served rather than
requiring a setback from the building and shall be located to directly
serve the building for which the space is being provided. Loading
spaces shall be located at least 20 feet from any building being served.
No off-street parking or loading space shall have direct access from
a street.
(2)
No loading and parking spaces shall be located in
any required buffer area.
(3)
No parking shall be permitted in fire lanes, streets,
driveways, aisles, sidewalks or turning areas.
(4)
Off-street loading spaces shall have 15 feet of vertical
clearance and be designed in accordance with the following criteria:
Loading Space
|
Apron/Aisle Length
| |||
---|---|---|---|---|
Length
(feet)
|
Width
(feet)
|
(90º)
(feet)
|
(60º)
(feet)
| |
60
|
10
|
72
|
66
| |
60
|
12
|
62
|
57
| |
60
|
14
|
60
|
54
|
E.
Residential parking. Parking requirements for residential
development applications shall be in compliance with and parking areas
shall be designed and constructed in accordance with Subchapter 4
(Streets and Parking) of N.JA.C 5:21 (Residential Site Improvement
Standards), as amended.
[Added 6-24-1997 by Ord. No. 97-51]
[1]
Editor's Note: Former § 130-82,
Fences, as amended, was repealed 8-18-1998 by Ord. No. 98-57.
[Added 10-15-1996 by Ord. No. 96-56]
The following principals, measures and guidelines
shall be utilized, to the maximum extent practicable, to minimize
the impact of development and/or activities on the quality of the
Township's groundwater resources and to limit the risk of contamination
of the Township's potable water supply:
A.
All commercial and residential development shall minimize
impervious coverage and maximize the amount of natural unoccupied
open space. In WPO Zones the amount of impervious coverage should
be a minimum of 10% less than that permitted by the underlying zoning.
B.
The preservation of naturally vegetated areas and
landscaped areas utilizing native plant material requiring minimal
fertilization and pesticide and herbicide application are encouraged.
C.
Substantial lawn areas requiring fertilization and
pesticide and herbicide application are discouraged.
D.
Storage of hazardous materials shall, except as otherwise
regulated by state or federal regulation, allow access for physical
inspection and monitoring and shall utilize the best available technology
to provide for automatic and immediate alarm or detection of releases.
E.
Users of hazardous materials shall have a plan to
detect and control hazardous material leaks and spills, including
but not limited to inspections, notification procedures and emergency
containment and cleanup procedure.
[1]
Editor's Note: Former § 130-83,
Signs, as amended 8-16-1988 by Ord. No. 88-68, was repealed 11-21-1989
by Ord. No. 89-67.
A.
All exterior lighting shall be designed to provide
a minimum lighting intensity of five-tenths (0.5) lumen per square
foot. Lighting shall be of a soft or glare-free type and shall not
cast an illumination color which shall be distractive, obliterate
or obscure the view, be ultraviolet, strobic, pulsating, flashing
or of any unnatural kind or create a public nuisance, discomfort or
hazard.
B.
All exterior lighting fixtures shall be designed,
manufactured, installed and aimed in such manner as to shield glare
from reflecting onto adjacent streets, properties, residences or public
areas.
C.
All lighting fixtures shall conform with all applicable
requirements of the BOCA Basic Energy Conservation Code and the Lighting
Power Budget Determination Procedure, EMS-1, of the Illuminating Engineer's
Society.
D.
All site plans or other development plans proposing
the use of exterior lighting, either freestanding or building-mounted,
shall include complete data regarding the proposed exterior illumination,
including the proposed direction and location of illumination; intensity
of illumination, as expressed either in horizontal footcandles or
lumens per square foot; the hours of illumination; detail drawings
and specifications of lighting fixtures, including but not limited
to the type of lighting, fixture details, mounting details, mounting
height and lighting isobar patterns; illumination areas as shown on
the site plan; and provisions to shield glare from reflecting onto
adjacent thoroughfares and properties; and, in addition, any additional
specific and special detailed data deemed appropriate for the particular
lighting application as required by the Township Engineer, Construction
Code Official, Zoning Officer, Planning Board, Environmental Commission,
Electrical Subcode Official, Police Department, Zoning Board of Adjustment
or other agency.
E.
The location of the parking lot light structure shall be in accordance with the requirements of § 130-51G(6).
[Added 9-18-1990 by Ord. No. 90-53]
[Added 6-24-1997 by Ord. No. 97-51]
If required, bikeways shall be designed and
constructed in accordance with Subchapter 4 (Streets and Parking)
of N.J.A.C. 5:21 (Residential Site Improvement Standards), as amended.
[Added 9-18-2007 by Ord. No. 2007-88]
A.
Standards. The Township shall designate a Police Radio
Communications Officer who shall determine whether the construction
or modification of any nonresidential structure may result in interference,
interruption, or degradation of the Township's communications system.
If it is determined by the Police Radio Communications Officer that
said construction or modification of a nonresidential structure results
in interference, interruption, or degradation of the Township's communications
system, it shall be a condition of site plan approval that the applicant
provide the following facilities, services and/or fees:
(1)
The applicant shall be required to provide sufficient
space, up to 1,000 square feet, in the new or modified nonresidential
structure to install radio transmitting and receiving equipment as
may be necessary to correct all radio system degradation or interference
resulting directly or indirectly from the construction or modification.
(2)
The applicant shall provide power sources, including
that provided by an emergency electric power generator, adequate to
operate all radio and ancillary equipment installed by the Township
in the proposed nonresidential structure or modification to a nonresidential
structure. Such power sources shall be secure and free from the possibility
of disconnection, to the satisfaction of the Police Radio Communications
Officer.
(3)
The applicant shall provide an antenna mounting
space and antenna cable pass, as necessary, to permit the erection
of transmitting and receiving antennas in a manner consistent with
the radio system's operational and coverage needs.
(4)
The applicant shall provide free and easy access
to the radio equipment, antenna system, and power sources 24 hours
per day, seven days per week, by the Township and its authorized officials.
(5)
The applicant shall provide such space, power
and other services and access at applicant's own cost.
(6)
The Township shall be responsible for the maintenance
and cleaning of the interior equipment room areas it uses in accordance
with these conditions and requirements. The owner of the structure
shall be responsible for the maintenance and access to these areas
and all roof areas.
(7)
The Township shall have the right to install
and maintain such security devices as it deems necessary for the protection
of its equipment. Such devices shall include, but not be limited to,
door locks, intrusion alarms, fire and smoke alarms, sprinkler systems
and fire extinguishers. Where appropriate, in the Township's discretion,
fire and smoke alarms may be interconnected with other building, fire
and smoke alarms to assure maximum protection and safety to those
working in or occupying the structure.
(8)
If the Police Radio Communications Officer determines
that the proposed structure or modification to the structure either
causes interference or degradation of the Township's radio system
and the structure is physically not capable of supporting radio communications
equipment, the applicant shall be responsible for the cost of the
work required to mitigate and restore necessary and secure communications
and radio services. Such costs shall include leasing, purchasing,
or otherwise acquiring space in other buildings, erecting radio towers,
acquiring building equipment shelters, and any other work deemed necessary
by the Police Radio Communications Officer. The applicant shall also
pay the cost of radio control wire lines and other circuits leased
from the appropriate utility company that are necessary for the control
and operation of the radio equipment at the site. The applicant shall
be obligated to pay such recurring costs for leased sites and/or equipment
for a period of at least 10 years or until such time the Township
vacates the premises, whichever event occurs first.
(9)
The applicant shall provide, install and maintain
signal distribution and/or other communications facilities that will
assure portable radio coverage throughout the structure and between
the inside of the structure and the outside free air. Such facilities
shall be at the expense of the applicant when determined by the Township
as necessary for the public welfare.
B.
Escrow fees. The applicant for any preliminary or
final site plan application for a nonresidential structure or modification
to a nonresidential structure which has been determined by the Police
Radio Communications Officer to be a potential cause of interference,
interruption, or severe degradation of the Township's Public Safety
and Municipal Communication System, shall be required to submit professional
service escrow fees at the time of the application submission sufficient
to cover the cost of the additional work to determine whether the
proposed construction is likely to interfere with the Township's radio
communications system. The applicant shall be required to replenish
the escrow account on an as-needed basis.