A.
No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer other than such discharge as is present at the time of passage of this Part 1. All new or altered connections, excluding ordinary repairs, to the sanitary wastewater system shall conform with this section.
B.
Stormwater and all other unpolluted drainage shall be discharged
to such drains as are specifically designated as storm drains or combined
sewers, or to a natural outlet approved by the Director. Industrial
cooling water or unpolluted process waters may be discharged, on approval
of the Director, to a storm drain, combined sewer, or natural outlet.
No person shall discharge or cause to be discharged any of the
following described waters or wastes to any public sewers:
A.
Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive
liquid, solid or gas;
B.
Any waters or wastes containing toxic or poisonous solids, liquids,
or gases in sufficient quantity, either singly or by interaction with
other wastes, to injure or interfere with any wastewater treatment
process, constitute a hazard to humans or animals, create a public
nuisance, or create any hazard in the receiving waters of the wastewater
treatment plant;
C.
Any waters or wastes having a pH lower than 5.5, or having any other
corrosive property capable of causing damage or hazard to structures,
equipment, and personnel of the wastewater works;
D.
Solid or viscous substances in quantities or of such size capable
of causing obstruction to the flow in sewers, or other interference
with the proper operation of the wastewater works such as, but not
limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass,
rags, feathers, tar, plastics, wood, unground garbage, whole blood,
paunch manure, hair and fleshing, entrails, and paper dishes, cups,
milk containers, etc., either whole or ground by garbage grinders.
A.
No person shall discharge or cause to be discharged the following
described substances, materials, waters, or wastes if it appears likely,
in the opinion of the Director, that such wastes can harm either the
sewers, wastewater treatment process, or equipment, have an adverse
effect on the receiving stream, or can otherwise endanger life, limb,
public property, or constitute a nuisance.
B.
In forming his opinion as to the acceptability of these wastes, the
Director will give consideration to such factors as the quantities
of subject wastes in relation to flows and velocities in the sewers,
materials of construction of the sewers, nature of the wastewater
treatment process, capacity of the wastewater treatment plant, degree
of treatability of wastes in the wastewater treatment plant, and other
pertinent factors.
C.
The substances restricted are:
(1)
Any liquid or vapor having a temperature higher than 140° F.,
or such lower temperature specified by the Director to ensure that
the temperature of influent wastewater at the City's wastewater
treatment works does not exceed 104° F.
(2)
Any water or waste containing fats, wax, grease, or oils, whether
emulsified or not, in excess of 100 mg/liter or containing substances
which may solidify or become viscous at temperatures between 32° F.
and 150° F. (0° C. and 65° C.).
(3)
Any garbage that has not been properly shredded. The installation
and operation of any garbage grinder equipped with a motor of 3/4
horsepower (0.76 horsepower metric) or greater shall be subject to
the review and approval of the Director.
(4)
Any waters or wastes containing strong acid iron pickling wastes,
or concentrated plating solutions whether neutralized or not.
(5)
Any waters or wastes containing phenols or other taste- or odor-producing
substances in such concentrations as to exceed the limits established
by the Director and/or the requirements of the state, federal or other
public agencies or jurisdictions for such discharge or the receiving
waters.
(6)
Any radioactive wastes or isotopes of such half-life or concentration
as may exceed limits established by the Director in compliance with
applicable state or federal regulations.
(7)
Any waters or wastes having a pH in excess of 9.0.
(8)
Materials which exert or cause:
(a)
Unusual concentrations of inert suspended solids (such as, but
not limited to, Fuller's earth, lime slurries and lime residues)
or of dissolved solids (such as, but not limited to, sodium chloride
and sodium sulfate).
(b)
Color or turbidity in such an amount that it will prevent the
City from discharging a treated effluent in compliance with the water
quality standards.
(c)
Unusual BOD, chemical oxygen demand, or chlorine demand in such
quantities as to constitute a significant load on the wastewater treatment
plant.
(d)
Unusual volume of flow or concentration of wastes constituting
"slugs" as defined in this Part 1.
(9)
Waters or wastes containing substances which are not amenable to
treatment or reduction by the wastewater treatment processes employed,
or are amenable to treatment only to such a degree that the treatment
plant effluent cannot meet the requirements of other agencies having
jurisdiction over discharge to the receiving waters.
(10)
Septic tank solids that are not diluted sufficiently to assure
that all particles will be carried freely under all flow conditions
in the wastewater facilities.
A.
If any waters or wastes are discharged or are proposed to be discharged
to the public sewers, which waters contain the substances in excess
of the limits which may be established by the Director or possess
the characteristics which, in the judgment of the Director, may have
a deleterious effect upon the wastewater works, processes, equipment,
or receiving waters, or which otherwise create a hazard to life or
constitute a public nuisance, the Director may:
(1)
Reject the wastes;
(2)
Require pretreatment to an acceptable condition for discharge to
the public sewers;
(3)
Require control over the quantities and rates of discharge; and/or
(4)
Require payment to cover the added cost of handling and treating
the wastes not covered by existing taxes or sewer charges under the
provisions of this Part 1. The amount to be assessed shall include
not only the aforementioned costs but also costs of ascertaining responsibilities.
B.
If the Director permits the pretreatment or equalization of waste
flows, the design and installation of the plants and equipment shall
be subject to the review and approval of the Director and subject
to the requirements of all applicable codes, ordinances and laws.
A.
Any waters or wastes containing heavy metals, including but not limited
to arsenic, barium, cadmium, chromium, cobalt, copper, lead, nickel,
tin, silver, gold, or zinc, will require pretreatment before discharge
to the City's system. Pretreatment shall be such as to reduce
the concentration of heavy metals by appropriate methods in the pretreatment
system effluent to a level equal to or less than the solubility of
the oxide of hydroxide of the heavy metal.
B.
Sludges resulting from the pretreatment process may not be discharged
to the sewerage system. The above requirement is in compliance with
the policy of the Massachusetts Division of Water Pollution Control.
Stricter limits may be imposed if it is found necessary to meet water
quality standards. Industries discharging or requesting to discharge
beryllium, mercury, arsenic or selenium in any quantity will additionally
obtain approval of the Division of Water Pollution Control or their
appointed successors.
A.
Grease, oil, and sand interceptors shall be provided when, in the
opinion of the Director, they are necessary for the proper handling
of liquid wastes containing grease in excessive amounts, or any flammable
wastes, sand, or other harmful ingredients; except that such interceptors
shall not be required for private living quarters or dwelling units.
B.
All interceptors shall be of a type and capacity approved by the
Director and shall be located so as to be readily and easily accessible
for cleaning and inspection.
A.
When required by the Director, the owner of any property serviced
by a building sewer carrying industrial wastes shall install a suitable
control manhole together with such necessary meters and other appurtenances
in the building sewer to facilitate observation, sampling, and measurement
of the wastes.
B.
Such manholes, when required, shall be accessibly and safety located
and shall be constructed in accordance with plans approved by the
Director.
C.
The manhole shall be installed by the owner at his expense and shall
be maintained by him so as to be safe and accessible at all times.
A.
All measurements, tests and analyses of the characteristics of waters
and wastes to which reference is made in this Part 1 shall be determined
in accordance with the latest edition of Standard Methods for the
Examination of Water and Wastewater, published by the American Public
Health Association, and shall be determined at the control manhole
provided or upon suitable samples taken at said control manhole. In
the event that no special manhole has been required, the control manhole
shall be considered to be the nearest downstream manhole in the public
sewer or private sewer to the point at which the building sewer is
connected. Sampling shall be carried out by customarily accepted methods
to reflect the effect of constituents upon the wastewater works and
to determine the existence of hazards to life, limb, and property.
(The particular analyses involved will determine whether a twenty-four-hour
composite of all outfalls of a premises is appropriate or whether
a grab sample or samples should be taken. Normally, but not always,
BOD and suspended solids analyses are obtained from twenty-four-hour
composites of all outfalls, whereas pHs are determined from periodic
grab samples.)
B.
Furnishing required analyses, flow data, etc., shall be the responsibility
of the applicant. The Director will stipulate the minimum analyses
and other data that shall be obtained and shall conduct such wastewater
sampling and measuring programs as are requested by the applicant.
Expenses thus incurred by the City shall be assessed to the applicant.
C.
All industries discharging into a public sewer system shall perform
such monitoring of their discharges as the Director and/or other duly
authorized employees of the City may reasonably require, including
installation, use, and maintenance of monitoring equipment, keeping
records and reporting the results of such monitoring to the Director.
Such records shall be made available by the Director, upon request,
to other governmental agencies or City departments having jurisdiction
over discharges to receiving water.
A.
No statement contained in this article shall be construed as preventing
any agreement or arrangement between the City and any industrial concern
whereby an industrial waste of unusual strength or character may be
accepted by the City for treatment, subject to payment therefor, by
the industrial concern.
B.
Such agreement or arrangement shall first be approved by the City
Council and the Mayor.
C.
Such agreements may not waive pretreatment standards (local and categorical),
unless such a waiver is granted by mechanisms established under the
general pretreatment regulations. Prohibited discharge standards may
not be waived under any circumstances.
Where preliminary treatment or flow-equalizing facilities are
provided for any waters or wastes, they shall be maintained continuously
in a condition satisfactory to the Director and be effectively operated
by the owner at the owner's expense.
No septic tank solids shall be discharged to the City's
wastewater system except by specific permission of the Director. The
Director shall designate the locations where septic tank solids may
be discharged to the wastewater system and the conditions for such
discharge.
