Water conservation devices shall be installed on all new or
replacement fixtures in conformance with the Uniform Construction
Code.
No garbage disposal unit or garbage grinding or chopping device
shall be attached to any pipe, conduit or otherwise in a manner allowing
the effluent, sediment or residue from the unit or device to be discharged
into the sanitary sewer system.
A.
General prohibitions. No user shall introduce or cause to be introduced
into the POTW any pollutant or wastewater which causes pass-through
or interference. These general prohibitions apply to all users of
the POTW, whether or not they are subject to categorical standards
or any other national, state or local pretreatment standards or requirements.
B.
Specific prohibitions. No user shall discharge, deposit or cause
or allow to be discharged or deposited into the POTW the following
substances, pollutants or wastewaters:
(1)
Wastewater containing more than 100 milligrams per liter of petroleum
oil, nonbiodegradable cutting oils, products of mineral oil origin,
oil, greases or fats of an animal or vegetable origin. Substances
which may solidify or become viscous at temperatures between 32°
F. and 150° F. are also prohibited.
(2)
Any waters containing toxic or poisonous solids, liquids, gases,
vapors or fumes in sufficient quantity, either singly or by interaction
with other wastes, to injure or interfere with any waste treatment
process, constitute a hazard to humans or animals, causing acute worker
health and safety problems, create a public nuisance, or create any
hazard in the receiving waters of the wastewater facilities.
(3)
Any waters or wastes having a pH lower than 5.5 or higher than 9.5
or having any other corrosive property capable of causing damage or
hazard to structures, equipment and personnel of the Wastewater Utility.
Prohibited materials include, but are not limited to, concentrated
acids, alkalis, sulfide, chloride and fluoride compounds, and substances
which will react with water to form acidic or alkaline products which
have a pH value outside the range of 5.5 to 9.5 standard units.
(4)
Solid or viscous substances in quantities or of such size capable
of causing obstruction to the flow in sanitary sewers or other interference
with the proper operation of the wastewater facilities, such as, but
not limited to, ashes, bones, cinders, sand, mud, straw, shavings,
metal, glass, rags, feathers, tar, plastics, wood, whole blood, paunch
manure, hair and fleshings, entrails and paper dishes, cups or milk
containers.
(5)
Any pollutant, including oxygen-demanding pollutants (BOD, COD, etc.),
released in a discharge at a flow rate and/or pollutant concentration
which will cause interference with the POTW.
(6)
Any polluted or unpolluted waters, such as stormwater, surface water,
sump water, groundwater, artesian well water, roof runoff, subsurface
drainage, swimming pool drainage, condensate or deionized water.
(7)
Wastewater containing any radioactive wastes or isotopes except in
compliance with applicable state or federal regulations.
(8)
Sludges, screenings or other residues from the pretreatment of industrial
wastes.
(9)
Medical wastes, including but not limited to disinfected tissue fluid,
diseased human or animal organ tissue, disinfected whole blood, or
other contaminated solid waste related to the transmission of disease
from human or veterinary hospitals, medical facilities, pharmaceutical/research,
animal shelters or related licensed facilities.
(10)
Wastewater causing, alone or in conjunction with other sources,
the treatment plant's effluent to fail a toxicity test.
(11)
Detergents, surface-active agents, non-biodegradable detergents,
or other substances which may cause excessive foaming in the POTW.
(12)
Any industrial waste containing a noxious or odor-producing
substance which, either singularly or by interaction with other waste,
is capable of creating a public nuisance or hazard to life or which
prevents entry into sanitary sewers for their inspection, maintenance
and repair.
(13)
Quantities of flow, wastes, or both, which constitute a slug.
(14)
Wastewater or industrial wastes which, by interaction with other
water or wastes in the sanitary sewer system, release obnoxious gases,
develop color of undesirable intensity, form suspended solids which
obstruct the POTW, or create a condition deleterious to structures
and treatment processes.
(15)
Any wastes containing viable pathogenic bacteria other than
those normal to domestic sewage.
(16)
Any discharge in excess of 65° C. (150° F.). Heat in
the amounts which will inhibit biological activity resulting in interference,
but in no case heat in such quantities that the temperature at the
wastewater treatment works exceeds 40° C. (104° F.).
(17)
Any wastewater with objectionable color not removed in the POTW,
such as dye and pigments, which consequently imparts color to the
treatment plant's effluent.
(18)
Any pollutants, including liquids, solids or gases, in wastewater
causing two readings on an explosion hazard meter, at the point of
discharge into the POTW or at any point in the POTW, of more than
10%, or any single reading over 25% of the lower explosive limit of
the meter. Those materials, by reason of their nature or quantity,
may, either alone or by interaction with other substances, cause fire
or explosion or be injurious in any other works. Such materials include
but are not limited to gasoline, kerosene, naphtha, benzene, toluene,
xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates,
perchlorates, bromates, carbides, hydrides and sulfides. Also includes
any wastewater which creates a fire or explosion hazard, including,
but not limited to, waste streams with a closed-cup flashpoint of
less than 140° F. or 60° C. using the test methods specified
in 40 CFR 261.21.
(19)
Any trucked or hauled pollutant or septage.
(20)
Liquids, solids or gases in wastewater causing two readings
on an explosion hazard meter, at the point of discharge into the POTW
or at any point in the POTW, of more than 10%, or any single reading
over 25% of the lower explosive limit of the meter.
(21)
Any effluent, sediment or residue from any garbage disposal
unit or garbage grinding or chopping device.
(22)
Nonresidential wastewater containing floatable oils, fat or
grease.
(23)
Washings from vehicles, without pretreatment approval by the
Director of the Department of Water Pollution Control.
(24)
Wastewater from floor drains serving vehicle maintenance or
service, manufacturing or chemical-handling facilities.
(25)
Any hazardous waste.
C.
General pretreatment standards. General pretreatment standards, 40
CFR 403.1 et seq., are hereby incorporated by reference, including
all supplements and amendments thereto.
The Director of the Department of Water Pollution Control is
authorized to impose any conditions, requirements or terms in a permit
as, in the Director of the Department of Water Pollution Control's
discretion, are necessary to assure compliance with all applicable
federal, state and local requirements and to protect the POTW.
A.
The following substances shall be limited in discharges to the sanitary
sewer system to concentrations or quantities which will not harm the
POTW, will not otherwise endanger lives, limb, public property, or
consideration to such factors as the quantity of subject waste in
relation to flows and velocities in the sanitary sewers, materials
of construction of the sanitary sewers, protection against pass-through
and interference and other pertinent factors. The following limitations
on wastewater at the point of discharge (i.e., end-of-pipe) to the
POTW shall not be violated as a monthly average unless alternate limits
or restrictions are specified in a Township-issued IWD permit:
|
Substance
|
Local Limit Concentration
(milligrams per liter)
|
|---|---|
|
Copper
|
3.61
|
|
Chromium
|
3.06
|
|
Nickel
|
2.53
|
|
Lead
|
2.30
|
|
Zinc
|
1.88
|
|
Cadmium
|
0.355
|
|
Mercury
|
0.18
|
|
Arsenic
|
0.074
|
B.
The following limitations on wastewater at the point of discharge
(i.e., end-of-pipe) to the POTW shall not be violated as a monthly
average unless alternate limits or restrictions are specified in a
Township-issued IWD permit:
|
Substance
|
Concentration
(milligrams per liter)
|
|---|---|
|
Ammonia
|
40.0
|
Within 90 calendars days after the promulgation by the EPA of
a categorical pretreatment standard, existing industrial users subject
to such standards shall apply to the NJDEP for an industrial discharge
permit. The Director of the Department of Water Pollution Control,
or his designee, shall review the NJDEP Industrial Wastewater Discharge
Draft Permit and submit any comments concerning the information in
this document to the NJDEP.
State requirements and limitations on discharges shall apply
in any case where they are more stringent than federal requirements
and limitations or those in this chapter.
Except where expressly authorized to do so by an applicable
pretreatment standard or requirement, no user shall ever increase
the use of process water or in any other way attempt to dilute a discharge
as a partial or complete substitute for inadequate treatment to achieve
compliance with a pretreatment standard or requirement. Mass limitations
may be imposed on users who are using dilution to meet applicable
pretreatment standards or requirements or in other cases when the
imposition of mass limitations is appropriate.
A.
Grease, oil and sand interceptors shall be provided where required
by the Director of the Department of Water Pollution Control for the
proper handling of wastewaters containing floatable oil in excess
of amounts specified herein, except that such interceptors shall not
be required for private living quarters or dwelling units.
B.
All new commercial or industrial users, including but not limited
to restaurants, motels, hotels, cafeterias, hospitals, nursing homes,
schools and food-handling facilities including fast food services,
shall provide an appropriately sized external oil and grease interceptor.
Included in this category are commercial and industrial customers
that will occupy an established facility.
C.
Any existing commercial or industrial users, as defined above, operating without an external grease interceptor, will be required to install an external grease interceptor if it is determined by the Director of the Department of Water Pollution Control or his designee that there exists a violation of the prohibition in § 385-22B(1) and/or 385-22B(22).
D.
Such interceptors shall not be considered "pretreatment facilities,"
as used in this chapter.
E.
All interceptors shall be properly sized for the flow and load from
the establishment, with a minimum capacity of 750 gallons. The interceptors
must be approved by the Township and located outside the structure
to be easily accessible for cleaning and inspection.
(1)
Restaurants, cafeterias, hospitals, nursing homes and other commercial
kitchens with varied seating capacity. The Grease Interceptor Sizing
Worksheet shall be used to determine the minimum size required for
those grease interceptors.[1]
[1]
Editor's Note: The Grease Interceptor Sizing Worksheet is included as an attachment to this chapter.
F.
In no case shall a grease interceptor serving a restaurant, cafeteria
or other commercial kitchen be smaller than 750 gallons in capacity.
If the formula determines that the external grease interceptor is
more than 2,000 gallons, a site-specific engineering review shall
be completed by the Director of the Department of Water Pollution
Control or his designee.
G.
In maintaining these interceptors, the owner(s) shall be responsible
for the proper removal and disposal of the captured material and shall
maintain records of the dates and means of disposal, which are subject
to review by the Director of the Department of Water Pollution Control.
All grease traps shall be cleaned after 75% of the storage capacity
is reached. Grease retention capacity is defined as the amount of
grease (pounds) that the trap can hold before its average efficiency
drops below 90%.
H.
The minimum requirements for construction, materials and foundations
of grease traps shall be the same as those required for septic tanks,
as prescribed in N.J.A.C. 7:9A-8.2.
I.
The inlet and outlet of the grease trap shall be provided with "T"
baffles extended to a depth of 12 inches above the tank floor and
well above the liquid level.
J.
To facilitate maintenance, manholes extending to finished grade shall
be provided. Covers shall be of gastight construction and shall be
designed to withstand expected loads and prevent access from the public.
K.
The inlet and outlet lines to an external interceptor shall have
cleanouts that extend to finished grade, and all plugs should be brass
countersunk at grade. The effluent pipe of the external grease trap
shall also contain a backwater flow check valve.
L.
For any commercial or industrial facilities that are found to have
grease interceptor systems which are inadequate in accordance with
this section, or where a sewer blockage has occurred or is occurring
due to a failing system, and which are connected to the Township's
sanitary sewer system, and/or are in the process of changing owners,
lessor or renter, the fee-simple owner will be required to: 1) submit
to an inspection of grease retention equipment by the Township to
determine adequacy of system sizing; 2) update the system before the
new operator can initiate business; 3) obtain all necessary approvals
and provide evidence of installation. Failure to comply will be treated
as a violation in accordance with this chapter.
M.
Where automobiles are serviced, greased, repaired, washed or where
gasoline is dispensed, separators shall have a minimum capacity of
six cubic feet for the first 100 square feet of area to be drained
plus one cubic foot for each additional 100 square feet to be drained
into the separator. Oil separators shall have a depth of not less
the two feet below the invert of the discharge drain. The outlet opening
of the separator shall have not less than an eighteen-inch water seal.
(1)
Grease collected from a grease interceptor must not be introduced
into any drainage piping, public or private sewer.
(2)
No grease interceptor, interior or exterior, shall have any enzyme
or other opening for similar chemicals, nor shall it use automatic
or manual solvent dispensers.
(3)
Grease interceptors and separators must be maintained in efficient
operating condition by the periodic removal of accumulated grease.
Evidence of proper removal and disposal will be required.
N.
Failing systems. Any commercial or industrial facility that is currently
operating a grease retention system and experiences a blockage due
to a failing system, will be required to:
O.
Retrofitting. Any commercial or industrial facility that is found
to be generating grease and operating without a grease interceptor
system, even though there has been no history of blockages from their
location, shall be required to install a grease retention facility
within a specified time period agreed to between the fee-simple owner
of the property and the Township.
P.
Termination or curtailment of service. In cases where grease interceptor
systems are found to be inadequate due to undersizing, where blockages
have occurred more than once, or where the systems are not in place,
the Township shall have the option to discontinue or curtail sewer
service to the responsible establishment. Following reasonable notice
of discontinuance or curtailment of service for failure to eliminate
an impermissible discharge and until such time that an inspection
by the Township determines the installation or completion for repairs
to the grease interceptor system is satisfactory using the flow parameters
outlined in this section, the Township may not renew sewer service.
Failure to comply will be treated as a violation in accordance with
this chapter.
