[R.O. 2011 § 710.050; Ord. No. 17-184 § 1, 9-20-2017]
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 subjected 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.) [sixty degrees Celsius (60° C.)] using
the test methods specified in 40 CFR 261.21;
2.
Wastewater having a pH less than
five (5.0) or more than twelve (12.0), 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-half (1/2) inch
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. In no case
shall a Slug Load have a flow rate or contain concentration or qualities
of pollutants that exceed for any time period longer than fifteen
(15) minutes more than five (5) times the average twenty-four-hour
concentration, quantities or flow during normal operation. Where necessary,
in the opinion of the Director of Public Works, the owner shall provide,
at his/her expense, such preliminary treatment as may be necessary
to:
a.
Reduce the biochemical oxygen demand
to three hundred (300) parts per million by weight; or
b.
Reduce the suspended solids to three
hundred (300) parts per million by weight; or
c.
Control the quantities and rates
of discharge of such waters or wastes; or
d.
Pay the required surcharge as established
by ordinance.
5.
Wastewater 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.) [forty degrees Celsius (40° C.)];
6.
Petroleum oil, non-biodegradable
cutting oil, or products of mineral 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 of Public Works in accordance with Section 710.140 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.
Stormwater, surface water, groundwater,
artisan 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
of Public Works;
13.
Sludges, screenings, or other residues
from the pretreatment of industrial wastes; Medical wastes, except
as specifically authorized by the Director of Public Works in a wastewater
discharge permit;
14.
Wastewater causing, alone or in conjunction
with other sources, the treatment plant's effluent to violate the
NPDES permit receiving water quality standards or fail a toxicity
test;
15.
Detergents, surface-active agents,
or other substances which may cause excessive foaming in the POTW;
16.
Fats, oils, or greases of animal
or vegetable origin in concentrations greater than one hundred (100)
mg/l;
17.
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 five percent (5%) or any
single reading over ten percent (10%) of the Lower Explosive Limit
of the meter; or
18.
In no case shall a substance discharged
to the POTW cause the POTW to be in non-compliance with EPA sludge
use or disposal criteria, guidelines or regulations; any criteria,
guidelines or regulations affecting sludge use or disposal developed
pursuant to the RCRA, SWDA, the Clean Water Act, the Toxic Substance
Control Act or State regulations applicable to the sludge management
method being used.
C.
When the Director of Public Works determines
that a User(s) is contributing to the POTW, any of the above enumerated
substances in such amounts as to interfere with the operation of the
POTW, the Director of Public Works shall advise the User(s) of the
impact of the contribution on the POTW and develop effluent limitation(s)
for such User to correct the interference with the POTW.
D.
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.
[R.O. 2011 § 710.060; Ord. No. 17-184 § 1, 9-20-2017]
A.
The categorical Pretreatment Standards
found at 40 CFR Chapter 1, Subchapter N, Parts 405 – 471 are
hereby incorporated.
1.
Where a categorical Pretreatment
Standard is expressed only in terms of either the mass or the concentration
of a pollutant in wastewater, the Director of Public Works may impose
equivalent concentration or mass limits in accordance with 40 CFR
403.6(c).
2.
When the limits in a categorical
Pretreatment Standard are expressed only in terms of mass of pollutant
per unit of production, the Director of Public Works may convert the
limits to equivalent limitations expressed either in mass of pollutant
discharged per day or effluent concentration for purposes of calculating
effluent limitations applicable to individual Industrial Users.
3.
When wastewater subject to a categorical
Pretreatment Standard is mixed with wastewater not regulated by the
same Standard, the Director of Public Works shall impose an alternate
limit using the combined wastestream formula in 40 CFR 403.6(e).
4.
A User may obtain a variance from
a categorical Pretreatment Standard if the User can prove, pursuant
to the procedural and substantive provisions in 40 CFR 403.13, that
factors relating to its discharge are functionally different from
the factors considered by EPA when developing the categorical pretreatment
standard.
[R.O. 2011 § 710.070; Ord. No. 17-184 § 1, 9-20-2017]
Users must comply with State of Missouri
Pretreatment Standards codified at 10 CSR 20-6.100.
[R.O. 2011 § 710.080; Ord. No. 17-184 § 1, 9-20-2017]
A.
The Director of Public Works 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
Allowable Discharge Limits:
1.
Areas serviced by the Missouri River
Wastewater Treatment Facility:
|
1.00 mg/l
|
Arsenic
|
|
0.22 mg/l
|
Cadmium
|
|
5.0 mg/l
|
Chromium
|
|
3.0 mg/l
|
Copper
|
|
1.0 mg/l
|
Cyanide
|
|
0.5 mg/l
|
Lead
|
|
0.3 mg/l
|
Mercury
|
|
2.0 mg/l
|
Nickel
|
|
1.0 mg/l
|
Silver
|
|
3.2 mg/l
|
Zinc
|
2.
Areas serviced by the Mississippi
River Wastewater Treatment Facility:
|
1.00 mg/l
|
Arsenic
|
|
2.0 mg/l
|
Cadmium
|
|
5.0 mg/l
|
Chromium
|
|
3.0 mg/l
|
Copper
|
|
1.0 mg/l
|
Cyanide
|
|
0.5 mg/l
|
Lead
|
|
0.3 mg/l
|
Mercury
|
|
2.0 mg/l
|
Nickel
|
|
1.0 mg/l
|
Silver
|
|
5.0 mg/l
|
Zinc
|
3.
And/or water or wastes containing
emulsified and grease exceeding, on analysis, an average of one hundred
(100) milligrams per liter [eight hundred thirty-four (834) pounds
per million gallons] of hexane soluble matter. The poundage permitted
per day from any establishment may be subsequently limited depending
upon hexane soluble content of the sewage delivered to the sewage
treatment works.
4.
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 of Public Works may impose mass limitations in addition
to, or in place of, the concentration-based limitations above.
[R.O. 2011 § 710.090; Ord. No. 17-184 § 1, 9-20-2017]
The City reserves the right to establish,
by ordinance or in wastewater discharge permits, more stringent Standards
or Requirements on discharges to the POTW consistent with the purpose
of this Chapter.
[R.O. 2011 § 710.100; Ord. No. 17-184 § 1, 9-20-2017]
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
of Public Works 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.
