There shall be discharged into the sanitary
sewer system of the Town of Georgetown only such waste as is properly
designated as "wastewater."
No person shall discharge or cause to be discharged
any stormwater, surface water, groundwater, roof runoff, subsurface
drainage, building foundation drainage, basement drainage, overflow
or drainage from cesspools or septic tanks and uncontaminated cooling
water to any sanitary sewer.
No person shall discharge or cause to be discharged
any of the following described waters or wastes to wastewater facilities.
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
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.
C. Any waters or wastes having corrosive properties capable
of causing damage or hazard to structures, equipment and personnel
of wastewater facilities.
D. Any solid or viscous substances in quantities or of
such size capable of causing obstruction to the flow or other interference
with the proper operation of the wastewater facilities such as, but
not limited to, ashes, cinders, sand, mud, straw, shavings, metal,
glass, rags, feathers, tar, plastics, wood, underground garbage, whole
blood, paunch manure, hair and fleshings, entrails and paper dishes,
cups, milk containers, etc., either whole or ground by garbage grinders.
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 Mayor and Council that such
wastes can harm either the sewage treatment process or equipment,
have an adverse effect on the receiving stream, or can otherwise endanger
life, limb, public property or constitute a nuisance. In forming his
or her opinion as to the acceptability of these wastes, the Mayor
and Council 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 are:
A. Any liquid or vapor having a temperature greater than
150° F. or an average temperature over an eight-hour period greater
than 100° F.
B. Any water or waste containing fats, wax, grease or
oils, whether emulsified or not, in excess of 100 mg/l or containing
substances which may solidify or become viscous at temperatures between
32° F. and 150° F. and 65° C.
C. 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 hp metric) or greater shall be subject
to the review and approval of the Mayor and Council.
D. Any industrial wastes that will not pass a 20-mesh
screen or equivalent.
E. Any waters or wastes containing strong acid iron pickling
wastes or concentrated plating solutions, whether neutralized or not.
F. Any waters or wastes containing iron, chromium, copper,
zinc and similar objectionable or toxic substances; or wastes exerting
an excessive chlorine requirement, to such degree that any such material
received in the composite sewage at the sewage treatment works exceeds
the limits established by the Mayor and Council for such materials
or which create any hazard in the receiving water of the treatment
plant. The following substances are not permitted in concentrations
above those listed. By amendment to the regulation, restrictions may
also be placed on other substances or the present concentration limits
revised, when it is shown that the presence of these substances or
concentrations at the treatment plant is sufficient to adversely affect
any portion of the treatment process.
|
Substance
|
Maximum Allowable
Concentration (mg/l)
|
---|
|
Arsenic as AS
|
0.5
|
|
Cadmium as Cd
|
0.4
|
|
Chromium (hexavalent) as Cr
|
0.2
|
|
Cyanide as CN
|
0.5
|
|
Lead as Pb
|
0.5
|
|
Copper as Cu
|
1.0
|
|
Mercury as Hg
|
0.5
|
|
Nickel as Ni
|
2.0
|
|
Zinc as Zn
|
5.0
|
G. Any waters or wastes containing phenols or other taste-
or odor-producing substances in such concentrations exceeding limits
which may be established by the Mayor and Council as necessary, after
treatment of the composite sewage, to meet the requirements of the
federal, state or other public agencies of jurisdiction for such discharge
to the receiving waters.
H. Any radioactive wastes or isotopes of such half-life
or concentration as may exceed limits established by the Mayor and
Council in compliance with applicable federal or state regulations.
I. Any waters or wastes having a pH lower than 5.5 or
greater than 9.5.
J. Materials which exert or cause:
(1) Unusual concentrations of inert suspended solids (such
as, but not limited to, Fullers earth, lime residues) or of dissolved
solids (such as, but not limited to, sodium chloride and sodium sulfate).
(2) Excessive discoloration (such as, but not limited
to, sodium chloride and sodium sulfate).
(3) A biochemical oxygen demand (BOD) greater than 300
mg/l as determined from analysis of a twenty-four-hour composite sample.
(4) A chemical oxygen demand (COD) greater than 400 mg/l
as determined from analyses of a twenty-four-hour composite sample.
(5) A total suspended solids (TSS) load greater than 300
mg/l as determined from analysis of a twenty-four-hour composite sample.
(6) An average chlorine demand greater than 15 ppm.
(7) Unusual "slug" of flow or concentration of wastes
which exceeds for any period of duration longer than 15 minutes more
than five times the average twenty-four-hour concentration of flows
during normal operation.
K. Waters or wastes containing substances which are not
amenable to treatment or reduction by 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 other
agencies having jurisdiction over discharge to the receiving waters.
If any waters or wastes are discharged or are proposed to be discharged to the wastewater facilities, which waters contain the substances or possess the characteristics enumerated in §
176-19 of this article, and which in the judgment of the Mayor and Council may have a deleterious effect upon the wastewater facilities, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Mayor and Council may:
A. Require that the waste discharge be stopped or reject
the application to discharge proposed waste;
B. Require pretreatment to an acceptable condition before
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 user charge systems.
When required by the Mayor and Council, the
owner of any property serviced by a building sewer carrying industrial
wastes shall install a suitable control manhole together with such
necessary meters, automatic sampling devices and other appurtenances
in the building sewer to facilitate observation, sampling and measurement
of the wastes. Such manhole, when required, shall be accessibly and
safely located, and shall be constructed in accordance with plans
approved by the Mayor and Council. The manhole shall be installed
by the owner at his or her expense, and shall be maintained by him
or her so as to be safe and accessible at all times.