[Ord. No. 1785, 3-12-2018]
A.
General Prohibitions. No User shall introduce or cause to be introduced
into the POTW any pollutant or wastewater which 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 National, 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.
Pollutants which create a fire or explosive hazard in the POTW,
including, but not limited to, wastestreams with a closed-cup flashpoint
of less than one hundred forty degrees Fahrenheit (140° F.) (60°
C.) using the test methods specified in 40 CFR 261.21;
2.
Wastewater having a pH less than five and zero tenths (5.0)
or more than nine and five tenths (9.5), or otherwise causing corrosive
structural damage to the POTW or equipment;
3.
Solid or viscous substances in amounts which will cause obstruction
of the flow in the POTW resulting in Interference but in no case solids
greater than one and one-half (1.5) inches in any dimension;
4.
Pollutants, including oxygen-demanding pollutants (BOD, etc.),
released in a discharge at a flow rate and/or pollutant concentration
which, either singly or by interaction with other pollutants, will
cause Interference with the POTW;
5.
Wastewater having a temperature greater than one hundred fifty
degrees Fahrenheit (150° F.) or sixty-five degrees Celsius (60°
C.), or which will inhibit biological activity in the treatment plant
resulting in Interference, but in no case wastewater which causes
the temperature at the introduction into the treatment plant to exceed
one hundred four degrees Fahrenheit (104° F.) or forty degrees
Celsius (40° C.);
6.
Petroleum oil, non-biodegradable cutting oil, or products of
mineral oil origin, in amounts that will cause Interference or Pass
Through;
7.
Pollutants which 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 Director in accordance with Section 720.140 of this Chapter;
9.
Noxious or malodorous liquids, gases, solids, or other wastewater
which, 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;
10.
Wastewater which imparts color which cannot be removed by the
treatment process, such as, but not limited to, dye wastes and vegetable
tanning solutions, which consequently imparts color to the treatment
plant's effluent, thereby violating the City's NPDES permit;
11.
Wastewater containing any radioactive wastes or isotopes except
in compliance with applicable State or Federal regulations;
12.
Storm Water, surface water, ground water, artesian well water,
roof runoff, subsurface drainage, swimming pool drainage, condensate,
deionized water, Non-Contact Cooling Water, and unpolluted wastewater,
unless specifically authorized by the Director;
13.
Sludges, screenings, or other residues from the pretreatment
of industrial wastes;
14.
Medical Wastes, except as specifically authorized by the Director
in an individual wastewater discharge permit;
15.
Wastewater causing, alone or in conjunction with other sources,
the treatment plant's effluent to fail toxicity test;
16.
Detergents, surface-active agents, or other substances which
that might cause excessive foaming in the POTW;
17.
Fats, oils, or greases of animal or vegetable origin in concentrations
greater than one hundred (100) mg/l;
18.
Wastewater causing two (2) readings on an explosion hazard meter
at the point of discharge into the POTW, or at any point in the POTW,
of more than one hundred percent (100%) [or any single reading over
ten percent (10%)] of the Lower Explosive Limit of the meter.
C.
Pollutants, substances, or wastewater prohibited by this Section
shall not be processed or stored in such a manner that they could
be discharged to the POTW.
[Ord. No. 1785, 3-12-2018]
A.
Users must comply with the Pretreatment Standards found at 40 CFR
Chapter I, Subchapter N, Parts 405-471. The pretreatment standards
of 40 CFR Chapter I, Subchapter N, Parts 405-471 are hereby incorporated
by reference into these regulations.
1.
When the limits in a categorical Pretreatment Standard are expressed
only in terms of mass of pollutant per unit of production, the Director
may convert the limits to equivalent limitations expressed either
as mass of pollutant discharged per day or effluent concentration
for purposes of calculating effluent limitations applicable to individual
Industrial Users.
2.
When wastewater subject to a categorical Pretreatment Standard
is mixed with wastewater not regulated by the same Standard, the Director
shall impose an alternate limit in accordance with 40 CFR 403.6(e).
[Ord. No. 1785, 3-12-2018]
Users must comply with State of Missouri Pretreatment Standards
codified at 10 CSR 20-6.100.
[Ord. No. 1785, 3-12-2018]
A.
The Director is authorized to establish Local Limits pursuant to
40 CFR 403.5(c).
B.
The following pollutant limits are established to protect against
Pass Through and Interference. No person shall discharge wastewater
containing in excess of the following maximum discharge limits:
|
Pollutant or Pollutant Property
|
Maximum Concentration for Any 1 Day
(milligrams per liter or mg/l)
|
|---|---|
|
BOD5
|
300
|
|
Cadmium
|
0.01
|
|
Chromium
|
0.043
|
|
Copper
|
0.024
|
|
Lead
|
0.21
|
|
Nickel
|
0.38
|
|
Silver
|
0.06
|
|
Total Suspended Solids
|
350
|
|
Zinc
|
0.15
|
|
Pollutant or Pollutant Property
|
Maximum Instantaneous Limits
(milligrams per liter or mg/l)
|
|---|---|
|
Cyanide
|
0.038
|
|
The above limits apply at the point where the wastewater is
discharged to the POTW. All concentrations for metallic substances
are for total metal unless indicated otherwise. The Director may impose
mass limitations in addition to the concentration-based limitations
above.
|
[Ord. No. 1785, 3-12-2018]
The City reserves the right to establish, by ordinance or in
individual wastewater discharge permits, more stringent Standards
or Requirements on discharges to the POTW consistent with the purpose
of this Chapter.
[Ord. No. 1785, 3-12-2018]
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 Director 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.
