A.
General prohibitions. No user shall introduce or cause to be introduced
into the POTW any pollutant or wastewater that 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 that create a fire or explosive hazard in the POTW, including,
but not limited to, waste streams with a closed-cup flashpoint of
less than 140° F. (60° C.) using the test methods specified
in 40 CFR 261.21;
(2)
Wastewater having a pH less than 5.5 or more than 9.0, or otherwise
causing corrosive structural damage to the POTW, equipment or personnel;
(3)
Solid or viscous substances in amounts that will cause obstruction
of the flow in the POTW resulting in interference but in no case solids
greater than 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 that,
either singly or by interaction with other pollutants, will cause
interference with the POTW;
(5)
Wastewater that 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 POTW to exceed 104°
F. (40° C.);
(6)
Petroleum oil, nonbiodegradable cutting oil, or products of mineral
oil origin, in amounts that will cause interference or pass-through;
(7)
Pollutants that 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 Commissioner in accordance with Chapter 389;
(9)
Noxious or malodorous liquids, gases, solids, or other wastewater
that, 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 that imparts color that cannot be removed by the
treatment process, such as, but not limited to, dye wastes and vegetable
tanning solutions, that consequently imparts color to the POTW's
effluent, thereby violating the City's SPDES permit;
(11)
Wastewater containing any radioactive wastes or isotopes except
in compliance with applicable state or federal regulations;
(12)
Stormwater, surface water, groundwater, artesian well water,
roof runoff, subsurface drainage, swimming pool drainage, condensate,
deionized water, noncontact cooling water, and unpolluted wastewater,
unless specifically authorized by the Commissioner;
(13)
Sludges, screenings, or other residues from the pretreatment
of industrial wastes;
(14)
Medical wastes, except as specifically authorized by the Commissioner
in an individual wastewater discharge permit;
(15)
Wastewater causing, alone or in conjunction with other sources,
the treatment plant's effluent to fail a toxicity test;
(16)
Detergents, surface-active agents, or other substances that
might cause excessive foaming in the POTW;
(17)
Any water or waste that may contain more than 100 parts per
million, by weight, of fat, oil or grease;
(18)
Wastewater causing a single reading on an explosion hazard meter
at the point of discharge into the POTW, or at any point in the POTW,
of more than 25% of the lower explosive limit of the meter;
(19)
Any garbage that has not been properly shredded;
(20)
Any ashes, cinders, sand, mud, straw, shavings, metal, glass,
rags, feathers, tar, plastics, wood, paunch manure or any other solid
or viscous substance capable of causing obstruction to the flow in
sewers or other interference with the proper operation of the sewage
works;
(21)
Any waters or wastes containing toxic or poisonous substances,
including oxygen-demanding pollutants, released at a flow rate and/or
pollutant concentration that would cause interference with any sewage
treatment process or constitute a hazard to humans or animals or create
any hazard in the receiving waters of the sewage treatment plant;
(22)
Any waters or wastes containing suspended solids of such character
and quantity that unusual attention or expense is required to handle
such materials at the sewage treatment plant;
(23)
Any pollutant in excess of values specified in the National Categorical pretreatment standards, § 389-29;
(24)
Any pollutants, substances and/or wastewater not mentioned in
this section but described in 40 CFR 403.5(b).
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.
Stormwater and all other unpolluted drainage shall be discharged
to such sewers as are specifically designated as combined sewers or
storm sewers or to a natural outlet approved by the Commissioner.
Industrial cooling water or unpolluted process waters may be discharged,
upon approval of the Commissioner, to a storm sewer, combined sewer
or natural outlet. Dischargers of cooling water to state waters must
apply for a SPDES permit.
B.
When the limits in a categorical pretreatment standard are expressed
only in terms of mass of pollutant per unit of production, the Commissioner
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.
C.
When wastewater subject to a categorical pretreatment standard is
mixed with wastewater not regulated by the same standard, the Commissioner
shall impose an alternate limit in accordance with 40 CFR 403.6(e).
D.
Once included in its permit, the industrial user must comply with the equivalent limitations developed in § 389-29 in lieu of the promulgated categorical standards from which the equivalent limitations were derived.
E.
Many categorical pretreatment standards specify one limit for calculating
maximum daily discharge limitations and a second limit for calculating
maximum monthly average, or four-day average, limitations. Where such
standards are being applied, the same production or flow figure shall
be used in calculating both the average and the maximum equivalent
limitation.
F.
Any industrial user operating under a permit incorporating equivalent
mass or concentration limits calculated from a production-based standard
shall notify the Commissioner within two business days after the user
has a reasonable basis to know that the production level will significantly
change within the next calendar month. Any user not notifying the
Commissioner of such anticipated change will be required to meet the
mass or concentration limits in its permit that were based on the
original estimate of the long-term average production rate.
A.
The Commissioner is authorized to establish local limits pursuant
to 40 CFR 403.5(c).
B.
No person shall discharge directly or indirectly into the POTW wastewater
containing any of the following substances in concentrations exceeding
those specified below on either a daily or instantaneous basis. Concentration
limits are applicable to wastewater effluents at a point just prior
to discharge into the POTW.
|
Local Discharge Limits
| |||
|---|---|---|---|
|
Substance1
|
Daily Maximum
(mg/l)
|
Monthly Average
(mg/l)
| |
|
Cadmium
|
0.39
|
0.26
| |
|
Chromium
|
2.77
|
1.71
| |
|
Copper
|
1.59
|
1.59
| |
|
Lead
|
0.36
|
0.26
| |
|
Nickel
|
3.98
|
2.38
| |
|
Silver
|
0.43
|
0.24
| |
|
Zinc
|
2.61
|
1.48
| |
|
NOTES:
| ||
|---|---|---|
|
1
|
All concentrations listed for metallic substances shall be as
total metal, which shall be defined as the value measured in a sample
acidified to a pH value of less than two without prior filtration.
| |
A.
Grease, oil and sand interceptors shall be provided when, in the
opinion of the Commissioner, they are necessary for the proper handling
of liquid wastes containing grease in excessive amounts or any flammable
wastes, sand and other harmful ingredients, except that such interceptors
shall not be required for private living quarters or dwelling units.
All interceptors shall be of a type and capacity approved by the Commissioner,
and shall be located as to be readily and easily accessible for cleaning
and inspection.
B.
Grease and oil interceptors shall be constructed of impervious materials
capable of withstanding abrupt and extreme changes in temperature.
They shall be of substantial construction, watertight and equipped
with easily removable covers which, when bolted in place, shall be
gastight and watertight.
C.
Where installed, such interceptors shall be inspected, cleaned, and
repaired by the user at his/her expense and be in continuously efficient
operation at all times. The grease, oil and sand interceptors shall
require annual cleaning with receipt of cleaning services submitted
to Commissioner.
D.
Where grease, oil and sand interceptors are installed, the City will
require a grease, oil and sand interceptor operating permit issued
by the City and approved by the Commissioner. An operating permit
shall be issued for a specified time period, not to exceed five years
from the effective date of the permit. An operating permit may be
issued for a period less than five years, at the discretion of the
Commissioner. Each operating permit will indicate a specific date
upon which it will expire.
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 pretreatment requirement. The Commissioner 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.
A.
Specific restrictions.
(1)
The admission into the public sewers of any waters or wastes having
the following characteristics shall be subject to the review and approval
of the Commissioner:
(a)
A five-day BOD greater than 300 parts per million by weight.
(b)
Containing more than 350 parts per million by weight of suspended
solids.
(c)
Having an average daily flow greater than 2% of the average
daily sewage flow of the City.
(d)
Any garbage that has not been properly shredded.
(e)
Any waters or wastes containing suspended solids of such character
and quantity that unusual attention or expense is required to handle
such materials at the POTW.
(f)
Any noxious or malodorous gas or substance capable of creating
a public nuisance.
(2)
Only the waters and wastes listed in § 389-27B(17), (19) and (22) may be discharged if reviewed and approved by the Commissioner, and these are the only water and wastes from § 389-27 that may be discharged if approved.
B.
Where necessary, in the opinion of the Commissioner, the owner shall
provide, at his expense, such preliminary treatment as may be necessary
to:
C.
When preliminary treatment, flow-equalizing facilities or monitoring
stations are provided for any waters or wastes, they shall be constructed
and maintained continuously in satisfactory and effective operation
by the owner at his expense. Where an industrial user has such treatment,
equalization or monitoring facilities at the time these regulations
are enacted, the Commissioner shall have the power to approve or disapprove
of the adequacy of such facilities. Where construction of new or upgraded
facilities for treatment, equalization or monitoring is required,
plans and specifications prepared by a licensed professional engineer
for such facilities shall be submitted to the Commissioner. No construction
of such new or upgraded facilities shall commence until approval of
the Commissioner is obtained in writing.
When required by the Commissioner, the owner of any property
served by a building sewer carrying industrial wastes shall install
a suitable control manhole 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 Commissioner. 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.
A.
All measurements, tests and analyses of the characteristics of waters and wastes required in any section of this chapter shall be carried out in accordance with the most recent edition of Standard Methods for the Examination of Water and wastewater, and in accordance with regulations promulgated by the EPA in 40 CFR 136, Guidelines Establishing Test Procedures for the Analysis of Pollutants. Such samples shall be taken at the approved monitoring stations described in § 389-33C, if such a station exists. If an approved monitoring station is not required, samples shall be taken from another manhole or other structure on the industrial sewer lateral before discharge to the public sewer. Unless specifically requested otherwise or unless specifically not allowed in federal regulations, samples shall be gathered as composite samples made up of individual samples taken not less than once per hour for a period of time equal to the duration of industrial waste discharge during daily operations.
B.
Each user shall provide for protection from accidental discharges
of prohibited materials or of materials in volume or concentration
exceeding limitations of this chapter or of an industrial wastewater
permit. Detailed plans and procedures to provide for this protection
shall be submitted to the Commissioner when so requested. Users shall
immediately notify the Commissioner of the discharge of wastes in
violation of this chapter or a permit resulting from breakdown of
pretreatment equipment; accidents caused by human error or negligence
or mechanical failure; or other causes, such as acts of nature, to
allow the City to take countermeasures. The Commissioner shall be
notified within five days of such occurrence by a detailed written
statement describing the causes of the discharge and the measures
being taken to prevent future occurrences.
C.
In order that employees of industrial users be informed of City requirements,
a notice shall be permanently posted on appropriate bulletin boards
within the user's facility advising employees of City requirements
and whom to call in case of an accidental discharge in violation of
this chapter or in case of any other violation of this chapter.
A.
No statement contained in this article shall be construed as preventing
any special agreement or arrangement between the City and any entity
whereby an industrial waste of unusual strength or character may be
accepted by the City for treatment, subject to payment therefor by
such entity.
B.
No special agreements shall circumvent categorical pretreatment standards
or federal prohibitions included in 40 CFR 403.5(b).
