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.
[Amended 8-20-1984 by L.L. No. 2-1984]
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 Superintendent.
Industrial cooling water or unpolluted process waters may be discharged,
on approval of the Superintendent, to a storm sewer or natural outlet.
SPDES regulations require that cooling water discharges to waters
of the state must apply for SPDES permits, and such discharges are
subject to state and federal regulations.
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 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 sewage works.
C. 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 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, paper dishes,
cups, milk containers, etc., either whole or ground by garbage grinders.
D. 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 or to constitute a hazard to humans or animals or to create a public nuisance or to create any hazards in the receiving waters of a sewage treatment plant effluent. (See §§
135-34 and
135-35.)
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 Superintendent and/or Director
that such wastes can harm either the sewers, sewage treatment process
or equipment, have an adverse effect on the receiving stream, can
otherwise endanger life, limb, public property or constitute a nuisance.
In forming his opinion as to the acceptability of these wastes, the
Superintendent and/or 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 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 in the first instance
but subject to review by the Superintendent and/or Director are:
A. Any liquid or vapor having a temperature higher than
150° F. (65° C.). The discharge of wastewater in such quantity
or of such temperature which will result in a temperature exceeding
104° F. (40° C.) at the influent to the POTW treatment plant
is prohibited.
[Amended 8-20-1974 by L.L. No. 2-1984]
B. Any water or waste containing fats, wax, grease or
oils, whether emulsified or not, in excess of 100 milligrams per liter
or containing substances which may solidify or become viscous at temperatures
between 32° F. and 150° F. (0° C. and 65° C.).
C. Any garbage that has not been properly shredded. The
installation and operation of garbage grinders equipped with a motor
of three-fourths horsepower (0.76 horsepower metric) or greater shall
be subject to the review and approval of the Superintendent and/or
Director. Not more than 30% of ground garbage on the dry basis shall
pass a No. 40 United States Standard sieve.
D. Any waters or wastes containing strong acid metal
pickling wastes or concentrated plating solutions, whether neutralized
or not.
E. Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances. (See §§
135-34 and
135-35.)
F. Any waters or wastes containing phenols or other taste-
or odor-producing substances in such concentration exceeding limits
which may be established by the Superintendent and/or Director 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.
G. Any radioactive wastes or isotopes of such half-life
or concentration as may exceed limits established by the Superintendent
and/or Director in compliance with applicable state or federal regulations.
H. Materials which exert or cause:
(1) Unusual concentration of inert suspended solids such
as, but not limited to, fuller's earth, lime slurries and lime residue,
or of dissolved solids such as, but not limited to, sodium chloride
and sodium sulfate.
(2) Excessive discoloration at the treatment plant or
in the receiving waters such as, but not limited to, dye wastes and
vegetable tanning solutions.
(3) Unusual BOD (biochemical oxygen demand), COD (chemical oxygen demand) or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works, except as provided for under §
135-36.
(4) Unusual volume of flow or concentration of wastes
constituting slugs, as defined herein.
I. Waters or wastes containing substances which are not
amenable to treatment or reduction of the sewage treatment processes
employed or are amenable to treatment only to such degree that the
sewage treatment plant effluent cannot meet the requirements of regulatory
agencies having jurisdiction over discharge to the receiving waters.
If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in §
135-32 of this article and which, in the judgment of the Superintendent and/or Director, may have deleterious effect upon the sewage works, processes, equipment or receiving waters or which otherwise create a hazard to life or constitute a public nuisance, the Superintendent and/or Director may:
B. Require pretreatment to an acceptable condition for
discharge to the public sewers;
C. Require control over the quantities and rates of discharge;
and/or
D. Require payment to cover the added cost of handling
and treating the wastes not covered by existing taxes or sewer charges.
The following is a partial list of toxic substances and pathogenic bacteria the discharge of which into the public sewerage system is hereby prohibited unless their concentration is reduced by treatment at the source to a point that will meet the general purposes of this Part
1 or come within the applicable standards set forth herein under §
135-35 or will not adversely affect any of the biochemical, chemical or other sewage treatment processes:
C. Bromine, iodine and chlorine.
J. Silver and silver compounds.
K. Sulfonamides and toxic dyes (organic or mineral).
M. All strong oxidizing agents such as chromates, dichromates,
permanganates, peroxides, etc.
N. Chemical compounds producing toxic, flammable or explosive
gases, either upon acidification, alkalinization, oxidation or reduction.
O. Strong reducing agents such as nitrites, sulphides,
sulphites, thiosulphates, etc.
P. Wastes from industrial processes or hospital procedures
containing viable pathogenic organisms.
Q. Chloroform.
[Added 8-20-1984 by L.L. No. 2-1984]
R. Tetrachloroethylene.
[Added 8-20-1984 by L.L. No. 2-1984]
[Amended 8-20-1984 by L.L. No. 2-1984]
A. The concentration in sewage of any of the following
toxic substances shall not exceed these concentrations judged by the
Superintendent and/or Director to be toxic to biological sewage treatment
processes or to the biota of the receiving waters and shall not in
any case exceed the following limits when such sewage is discharged
to a public sewer. These limits may be revised by the Superintendent
and/or Director whenever operating experience indicates that this
is desirable:
|
Toxic Substance
|
Permissible Concentration
(milligrams per liter)
|
---|
|
Cadmium
|
2.0
|
|
Chromium hexavalent
|
5.0
|
|
Copper
|
3.0
|
|
Cyanate
|
10.0
|
|
Cyanide
|
1.0
|
|
Mercuric chloride
|
2.0
|
|
Nickel
|
10.0
|
|
Silver
|
0.05
|
|
Zinc
|
5.0
|
|
Zirconium
|
10.0
|
|
Bromine, iodine and chlorine
|
100.0
|
B. When the volume of a single toxic industrial waste
discharge or the combined toxic industrial waste discharges of a group
of industries within a single contributory area is so large that an
excessive volume of toxic waste will enter a treatment plant, the
Superintendent and/or Director may impose lower concentration limits
upon the contributors. Conversely, where a toxic industrial waste
discharge will be effectively removed by the treatment works or will
be rendered innocuous before reaching a treatment plant or the receiving
waters, the Superintendent and/or Director may permit toxic industrial
waste discharge concentrations greater than those hereinbefore listed,
provided that the higher concentration does not constitute a toxicity
hazardous to maintenance workers and does not cause any deleterious
effects of any kind to the treatment process or receiving waters.
C. No special agreements shall circumvent Federal Categorical
Pretreatment Standards.
[Amended 8-20-1984 by L.L. No. 2-1984]
Upon the promulgation of the Federal Categorical
Pretreatment Standards for a particular industrial subcategory, the
federal standard, if more stringent than limitations imposed under
this Part 1 for sources in that subcategory, shall immediately supersede
the limitations imposed under this Part 1.