No person shall discharge or cause to be discharged any stormwater,
surface water, groundwater, roof runoff, sump pump discharge, subsurface
drainage, uncontaminated cooling water, or unpolluted industrial process
waters to any sanitary sewer.
Stormwater and all other unpolluted drainage shall be discharged
to such sewers as are specifically designated as storm sewers or to
a natural outlet approved by the Town Engineer. Industrial cooling
water or unpolluted process waters may be discharged, on approval
of the Town Engineer and the granting of a discharge permit by the
State Department of Energy and Environmental Protection, to a storm
sewer or natural outlet.
A.
No person shall discharge or cause to be discharged any of the following
described waters or wastes to any public sewer:
(1)
Gasoline, benzene, naphtha, fuel oil, or other flammable or explosive
liquid, solid or gas;
(2)
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 sewage treatment process,
constitute a hazard to humans or animals, create a public nuisance,
or create any hazard in the receiving waters of the sewage treatment
plant;
(3)
Any and all wastes or waters which do not conform to the appropriate
pretreatment standards of the State Department of Energy and Environmental
Protection;
(4)
Any water or wastes having a pH lower than 6.5 or higher than 9.5
or having any other corrosive property or characteristic capable of
causing damage or hazard to structures, equipment or personnel of
the sewage works;
(5)
Solid or viscous substances in quantities of such size capable of
causing obstruction to the flow in sewers or other interference with
the proper operation of the sewage 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 fleshings, entrails, and paper dishes, cups, milk
containers, etc., either whole or ground by garbage grinders.
B.
No person shall discharge or cause to be discharged the following
defined prohibited substances, whether contained in materials, waters
or wastes, if it appears likely in the opinion of the Town that such
wastes can harm either the sewers, sewage treatment plant or equipment,
have an adverse effect on the receiving stream or can otherwise endanger
life, limb, public property, or constitute a nuisance. Sampling shall
be carried out by customarily accepted methods to reflect the effect
of prohibited substances upon the sewage works and to determine the
existence of hazards of life, limb and property. In forming an opinion
as to the acceptability of these wastes, the Town 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 sewage treatment process, capacity of the sewage
treatment plant, degree of treatability of wastes in the sewage treatment
plant, and other pertinent factors. The substances prohibited are:
(1)
Any liquid or vapor having a temperature higher than 150° F.
(66° C.).
(2)
Any water or waste containing fats, wax, grease or oils, whether
emulsified or not, in excess of 100 mg. per liter or containing substances
which may solidify or become viscous at temperatures between 32˚
and 150° F. (0˚ and 66° C.).
(3)
Any garbage that has not been properly shredded. The installation
and operation of any garbage grinders equipped with a motor of 3/4
horsepower or greater shall be subject to review and approval of the
Building Inspector.
(4)
Any water or wastes exerting an excessive chlorine requirement to
such a degree that any such material received in the composite sewage
at the sewage treatment plant exceeds the limits established by the
Superintendent.
(5)
Phenols or other taste- or odor-producing substances in such concentration
so as to exceed limits established by the Superintendent, as necessary,
after treatment of the composite sewage to meet the requirements of
the state, federal or other public agencies of jurisdiction for such
discharge to the receiving waters.
(6)
Any radioactive materials or isotopes of such half-life or concentration
as may exceed limits established by the Superintendent with applicable
state or federal regulations.
(7)
Materials which contain or cause:
(a)
Unusual concentration, as determined by the Superintendent,
of inert suspended solids (such as, but not limited to, fuller's earth,
lime slurries, lime, residues) or dissolved solids (such as, but not
limited to, sodium chloride and sodium sulfate).
(b)
Excessive discoloration (such as, but not limited to, dye wastes
and vegetable tanning solutions).
(c)
Unusual BOD, chemical oxygen demand or chlorine requirements,
as determined by the Superintendent, in such quantities to constitute
a significant load on the sewage treatment works.
(d)
Unusual volume of flow or concentration of wastes constituting
a slug, as defined herein.
(8)
Strong acid iron-pickling wastes or concentrated plating solutions,
whether neutralized or not.
(9)
Any and all toxic and poisonous materials, including but not limited
to cyanides, copper, zinc, nickel, iron, chromium, lead, tin, silver,
mercury or salts thereof.
(10)
Materials which are not amenable to treatment or reduction by
the sewage treatment processes employed or are amenable to treatment
only to such degrees that the sewage treatment plant effluent cannot
meet the requirements of other agencies having jurisdiction over discharge
to the receiving waters.
C.
No person shall discharge into the public sewer any industrial or
commercial waters or wastes without obtaining an appropriate permit
from the State Department of Energy and Environmental Protection pursuant
to C.G.S. § 22a-430 prior to discharge of such waters or wastes.
If any waters or wastes discharged or proposed to be discharged to sewers discharging to the sewage treatment plant contain the substances or possess the characteristics enumerated in § 345-44, and which in the judgment of the Superintendent may have a deleterious effect upon the sewage works, processed equipment or receiving waters, or which otherwise create a hazard to life and constitute a public nuisance, the Superintendent may:
Grease, oil and sand interceptors shall be provided by the owner
at his expense when, in the opinion of the Superintendent, 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 units. All interceptors shall be of a type and capacity
approved by the Superintendent and shall be located as to be readily
and easily accessible for cleaning and inspection.
Where preliminary treatment or flow-equalizing facilities are
provided for any waters or wastes, they shall be maintained continuously
in satisfactory and effective operation by the owner at his expense.
When required by the Town, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole together with such necessary meters or other appurtenances in the building sewer to facilitate observation, sampling and measurement of wastes. An approved valve or gate shall be provided in the manhole to prevent the industrial waste from being discharged into the Town sewage system if it becomes necessary for the Superintendent to reject this industrial waste in accordance with § 345-45. Such manholes, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the Town. 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.
All measurements, tests and analyses of the characteristics
of waters and wastes to which reference is made in this chapter 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, Inc., and shall be determined at the control
manhole provided or upon suitable samples taken at the control manhole.
If no special manhole has been required, the control manhole shall
be considered to be the nearest downstream manhole in the public sewer
to the point at which the building sewer is connected. Sampling shall
be carried out by the Superintendent with such assistance as necessary
from the industry, using customarily accepted methods to reflect the
effect of constituents upon the sewage works and to determine the
existence of hazards to life, limb and property.
All industries discharging into a public sewer shall perform
such monitoring of their discharge as the Superintendent or other
duly authorized employee of the Town may reasonably require, including
installation, use and maintenance of monitoring equipment, keeping
records, and reporting the results of such monitoring to the Superintendent.
Such records shall be made available upon request by the Superintendent
to other agencies having jurisdiction over discharges to the receiving
water.
All establishments discharging industrial wastes into the Town
sewage system shall obtain a permit from the Town. The Director of
Public Works shall determine the information required to be included
on the application for such permit. Acceptable average and peak rates
of flow and concentration of pollutants shall be prescribed by the
Superintendent. In no instance shall the flow rate exceed 125 gallons
per minute. Average and peak rates of flow shall be determined at
the applicant's expense by a certified testing laboratory or an established
consultant. All permits shall be valid for a period not to exceed
five years.
No statement contained in this chapter shall be construed as
preventing any special written contractual agreement between any industrial
concern and the Town whereby an industrial waste of unusual strength
or characteristics may be accepted by the Town for treatment, subject
to payment therefor by the industrial concern, provided that such
agreements do not contravene any requirements of existing federal
law and are compatible with any user charge and industrial cost recovery
system in effect. Any such special agreement must be authorized and
approved by the Town Council and the State Department of Energy and
Environmental Protection prior to the initiation of sewage service
to the industrial concern.
