[Ord. of 5-5-2008]
Pollutants, substances, or wastewater prohibited by this section
shall not be processed or stored in such a manner that it could be
accidentally discharged to the POTW.
(a) General prohibitions. No user shall introduce or cause to be introduced
into the POTW any pollutant or wastewater that causes pass-through
or interference. These general prohibitions apply to all users of
the POTW, whether or not they are subject to categorical pretreatment
standards or any other federal, state, or local pretreatment standards
or requirements.
(b) Specific prohibitions. No user shall introduce or cause to be introduced
into the POTW the following pollutants, substances, or wastewater:
(1)
Any gasoline, benzene, naphtha, fuel oil or other flammable
or explosive liquid, gas, solid, or any substance that may generate
or form any flammable, combustible or explosive substance, fluid,
gas, vapor or liquid when combined with air, water or other substances
present in sewers, including, but not limited to, waste streams with
a closed-cup flashpoint of less than 140° F. (60° C.) using
the test methods specified in 40 CFR 261.21.
(2)
Wastewater having a pH less than 5.0 or greater than 9.0, as
measured at the point of connection to the sanitary sewer or other
available monitoring location, or otherwise causing corrosive structural
damage or hazard to the POTW equipment, or personnel, or with alkalinity
in such quantities that the pH of the influent to the POTW is caused
to exceed 8.0.
(3)
Solid or viscous substances including water or wastes containing
fats, wax, grease, or oils, whether emulsified or not, in concentrations
more than 100 parts per million by weight, or containing substances
that may solidify or become viscous at temperatures between 32°
F. and 150° F. (0° C. to 65° C.) in amounts that will
cause obstruction of the flow in the POTW resulting in interference.
(4)
Pollutants, including oxygen-demanding pollutants (BOD, COD,
etc.), or chlorine-demand requirements released in a discharge at
a flow rate and/or pollutant concentration that, either singly or
by interaction with other pollutants, will cause interference with
the POTW, constitute a hazard to humans or animals, create a public
nuisance, exceed any National Categorical Pretreatment Standard or
cause pass-through.
(5)
Wastewater having a temperature greater than 150° F. (60°
C.), or which will inhibit biological activity in the treatment plant
resulting in interference, but in no case wastewater that causes the
temperature at the introduction into the POTW treatment plant to exceed
104° F. (40° C.).
(6)
Petroleum oil, nonbiodegradable cutting oil, or products of
mineral oil origin, in amounts that will cause interference or pass-through.
(7)
Pollutants that result in the presence of toxic gases, vapors,
or fumes within the POTW in a quantity that may cause acute worker
health and safety problems.
(8)
Trucked or hauled pollutants, except at discharge points designated by the Superintendent in accordance with §
16-4.9 of this Part.
(9)
Any medical/infectious wastes, pharmaceutical waste, or radiological
waste, except as specifically authorized in a discharge permit.
(10)
Wastewater causing, alone or in conjunction with other sources,
the treatment plant's effluent or sludge to fail a toxicity test.
(11)
Household hazardous wastes, including, but not limited to, paints,
stains, thinners, pesticides, herbicides, antifreeze, transmission
and brake fluids, motor oil and battery acid.
(12)
Any hazardous waste listed or designated by the DEP.
(13)
Wastewater that imparts color that may not be removed by the
treatment process, such as, but not limited to, dye wastes and vegetable
tanning solutions, which consequently may impart color to the treatment
facility's effluent, thereby violating the City's MEPDES permit.
(14)
Noxious or malodorous liquids, gases, solids, or other wastewater
that, either singly or by interaction with other wastes, are sufficient
to create a public nuisance or a hazard to life, or to prevent entry
into the sewers for maintenance or repair.
(15)
Wastewater containing any radioactive wastes or isotopes, except
in compliance with applicable state or federal regulations.
(16)
Stormwater, surface water, groundwater, artesian well water,
roof runoff, subsurface drainage, swimming pool drainage, condensate,
deionized water, noncontact cooling water, or otherwise unpolluted
wastewater.
(17)
Sludges, screenings, or other residues from the pretreatment
of industrial wastes, unless specifically authorized by the Superintendent
in a wastewater discharge permit.
(18)
Detergents, surface-active agents, or other substances that
may cause excessive foaming in the POTW.
(19)
Wastewater causing a reading on an explosion hazard meter at
the point of discharge into the POTW, or at any point in the POTW,
of more than 10% of the lower explosive limit of the meter.
(20)
Garbage that has not been properly shredded (garbage grinders
may be connected to sanitary sewers from homes, hotels, institutions,
restaurants, hospitals, catering establishments, or similar places
where garbage originates from the preparation of food in kitchens
for the purpose of consumption on the premises or when served by caterers.
(21)
Any quantities of flow, concentrations, or both, that constitute a "slug," as defined in §
16-1.4 of this Part.
(22)
Waters or wastes that, by interaction with other water or wastes
in the POTW, release dangerous or noxious gases, form suspended solids
that affect the operation of the collection system, or create a condition
deleterious to structures and treatment processes.
(23)
Any materials that exert or cause unusual concentrations of
suspended solids (such as, but not limited to, ashes, cinders, sand,
mud, straw, shavings, metal, glass, rags, feathers, tar, plastics,
wood, manure, Fullers earth, lime, slurries, and lime residues) or
of dissolved solids (such as, but not limited to, sodium chloride
and sodium sulfate), or any other solid or viscous substance capable
of causing obstruction to the flow in sewers or other interference
with the proper operation of the POTW.
[Ord. of 5-5-2008]
No user shall ever increase the use of process water, or in
any way attempt to dilute a discharge, as a partial or complete substitute
for adequate treatment to achieve compliance with a discharge limitation
unless expressly authorized by an applicable pretreatment standard
or requirement. The Superintendent may impose mass limitations 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.
[Ord. of 5-5-2008]
Users implementing process changes may request that compliance
be determined based on mass limitations in lieu of concentration limitations.
Such mass-based limitations will be calculated from the permitted
concentration-based limitations and flows and shall be equivalent
to or less than the mass discharge in effect at the time of the request.
The intent of a mass-based limit is to encourage and allow pollution
prevention and/or water conservation measures that might cause a facility
to increase pollutant concentrations in its discharge even though
the total mass of the pollutant discharged does not increase, and
may in fact decrease. Decisions on granting requests for mass-based
compliance limitations will be based on user-specific information
and current operating conditions of the POTW and will be at the discretion
of the Superintendent. Implementation of mass-based limitations may
not contravene any requirements of federal or state laws and/or regulations
implemented thereunder and may not waive applicable categorical pretreatment
standards.