[Ord. 2018-354]
a.
The following requirements shall apply to all users of the POTW:
(1)
All users shall promptly notify the POTW in advance of any substantial
change in the volume or character of pollutants in their discharge.
(2)
New or increased contributions of pollutants or changes in the
nature of pollutant discharged to the POTW shall require prior approval
by the Water Pollution Control Plant Manager.
(3)
Industrial users shall notify the POTW, the EPA Regional Waste
Management Division Director, and state hazardous waste authorities
in writing of any discharge into the POTW of a substance, which if
otherwise disposed of, would be a hazardous waste under 40 CFR part
261. The notification shall comply with the requirements set forth
in 40 CFR 403.12(p)
(4)
Introduction or contribution of any pollutants without the notice
and approval required by this section is prohibited. Upon the receipt
of notice required by this section the Water Pollution Control Plant
Manager shall within 180 days or less approve the discharge if he
finds the proposed discharge meets applicable pretreatment standards
and requirements and would not cause the POTW to violate its NPDES
permit. The Water Pollution Control Plant Manager shall deny permission
for the discharge if he finds applicable pretreatment standards and
requirements are not met or the discharge would cause the POTW to
violate its NPDES permit. In lieu of denial of permission the Water
Pollution Control Plant Manager may allow such contribution or discharge
upon conditions, which would not violate applicable pretreatment standards
or requirements and would not cause the POTW to violate its NPDES
permit.
Any part of this section notwithstanding, upon receipt of the
notice required by this section the Water Pollution Control Plant
Manager may require, in addition to the requirements of this section,
that an industrial user obtain a permit under this chapter.
[Ord. 2018-354]
The following prohibitions shall apply to all users of the POTW
unless the user is subject to a more restrictive NCPS, IDNR, or wastewater
discharge permit limit. The following substances are prohibited from
discharge to the POTW:
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 that create a fire or explosion hazard in the POTW,
including, but not limited to, waste streams with a closed cup flashpoint
of less than 140° F. (60° C.) using test methods referenced
in 40 CFR 261.21. At no time shall two successive readings on a meter
capable of reading L.E.L. (lower explosive limit) at the nearest accessible
point to the POTW, at the point of discharge into the POTW, or at
any point in the POTW be more than 5% nor any single reading greater
than 10%;
2.
Pollutants which will cause corrosive structural damage to the
POTW, but in no case discharges with pH lower than 5.5 or greater
than 12;
3.
Solid or viscous pollutants which will cause obstruction to
the flow in the POTW resulting in interference. Such pollutants include,
but are not limited to: grease, garbage with particles greater than
one-half inch any dimension, animal tissues, paunch manure, bones,
hair, hides or fleshings, entrails, whole blood, feathers, ashes,
cinders, sand, spent lime, stone or marble dust, metal, glass, straw,
shavings, grass clippings, rags, spent grains, spent hops, waste paper,
wood, plastics, tar, asphalt residues from refining or processing
of fuel or lubricating oil, mud or glass grinding or polishing waste,
or tumbling and de burring stones, and wastewater containing fat,
wax, O&G, or other substances which may solidify or become viscous
at temperatures between 32° F. and 150° F. (0° C. and
650° C.);
4.
Any pollutant, including oxygen demanding pollutants (BOD, etc.)
released in a discharge at a flow rate or pollutant concentration
which will cause interference or pass through at the POTW or which
constitutes a slug load as defined in this chapter;
5.
Heat in amounts which will inhibit biological activity in the
POTW resulting in interference, but in no case wastewater or vapor
having a temperature higher than 150° F. (65° C.) at the point
of introduction into the POTW; and in no case waste water or vapor
which alone or in concert with other discharges produces a temperature
at the POTW treatment plant greater than 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 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 or a public nuisance;
8.
Any trucked or hauled pollutants, except at discharge points
designated by the POTW;
9.
Radioactive wastes unless they comply with IAC 641-40.72, 641-40.88
and 641-40 Appendix B, Table III,
10.
Pollutants causing excessive discoloration (such as, but not
limited to, dye waste and vegetable tanning solutions);
[Amended 11-9-2022 by Ord. No. 2022-528; Ord. 2018-354]
A.
General provisions.
1.
Dilution. Users shall not increase the use of process water
or, in any way; attempt to dilute a discharge as a partial or complete
substitute for adequate pretreatment to achieve compliance with the
limitations contained in the NCPS, or with any other pollutant specific
limitation developed by the City.
2.
Sample location. Measurement of pollutant concentrations to
determine compliance shall be made at the point immediately following
the pretreatment facility and before mixture with other waters, unless
another point is designated by the Water Pollution Control Plant Manager.
If necessary, the concentrations so measured shall be recomputed to
exclude the effect of any dilution that is improper using the combined
waste stream formula.
B.
Headworks limits - average mass. The average composite loading of
all users contributing the following specific pollutants to the POTW
shall not exceed the allowable total pounds. The allocation of pollutants
between industrial and non- industrial sources may be adjusted by
the Water Pollution Control Plant Manager provided that allowable
total loading for any pollutant at the headworks of the POTW treatment
plant is not exceeded.
|
Table 1
| |
|---|---|
|
Davenport Water Pollution Control Plant
| |
|
2606 South Concord Street
| |
|
Head Works Allowable Loading
| |
|
Pollutant
|
30 Day Average (lbs)
|
|
Al
|
5408.728
|
|
As
|
15.763
|
|
Ba
|
NA
|
|
Cd
|
3.037
|
|
Total Cr
|
11.252
|
|
Cu
|
46.237
|
|
Fe
|
682.836
|
|
Pb
|
36.657
|
|
Hg
|
1.004
|
|
Mo
|
44.749
|
|
Ni
|
183.286
|
|
Se
|
3.828
|
|
Ag
|
2.662
|
|
Zn
|
147.974
|
|
Total Phenols
|
3018.538
|
|
Total Cyanide
|
16.446
|
|
Table 2
| |
|---|---|
|
Davenport Water Pollution Control Lagoon
| |
|
West Locust Street
| |
|
Head Works Allowable Loading
| |
|
Pollutant
|
30 Day Average (lbs)
|
|
Al
|
NA
|
|
As
|
NA
|
|
Ba
|
NA
|
|
Cd
|
0.002
|
|
Total Cr
|
0.062
|
|
Cu
|
0.084
|
|
Fe
|
NA
|
|
Pb
|
0.011
|
|
Hg
|
NA
|
|
Mo
|
NA
|
|
Ni
|
0.072
|
|
Se
|
NA
|
|
Ag
|
0.002
|
|
Zn
|
8.338
|
|
Total Phenols
|
NA
|
|
Total Cyanide
|
0.002
|
|
Table 3
| |||
|---|---|---|---|
|
Davenport Water Pollution Control Plant
| |||
|
2606 South Concord Street
| |||
|
Tier 1 Significant Industrial User Local Limits
| |||
|
PB Leiner USA
|
Nestle Purina
|
Kraft Heinz
| |
|
Pollutant
|
30 Day Average
|
30 Day Average
|
30 Day Average
|
|
Al
|
NA
|
NA
|
NA
|
|
As
|
0.14 Pounds
|
0.037 Pounds
|
0.08 Pounds
|
|
Ba
|
NA
|
NA
|
NA
|
|
Cd
|
0.070 Pounds
|
0.018 Pounds
|
0.04 Pounds
|
|
Total Cr
|
0.110 Pounds
|
0.03 Pounds
|
0.03 Pounds
|
|
Cu
|
0.320 Pounds
|
0.09 Pounds
|
0.19 Pounds
|
|
Fe
|
NA
|
NA
|
NA
|
|
Pb
|
0.070 Pounds
|
0.02 Pounds
|
0.04 Pounds
|
|
Hg
|
NA
|
NA
|
NA
|
|
Mo
|
NA
|
NA
|
NA
|
|
Ni
|
0.080 Pounds
|
0.02 Pounds
|
0.04 Pounds
|
|
Se
|
0.08 Pounds
|
0.02 Pounds
|
0.05 Pounds
|
|
Ag
|
0.07 Pounds
|
0.018 Pounds
|
0.04 Pounds
|
|
Zn
|
1.20 Pounds
|
0.32 Pounds
|
0.70 Pounds
|
|
Total Phenols
|
0.27 Pounds
|
0.071 Pounds
|
0.15 Pounds
|
|
Total Cyanide
|
0.081 Pounds
|
0.022 Pounds
|
0.05 Pounds
|
|
Table 4
| |
|---|---|
|
Davenport Water Pollution Control Plant
| |
|
2606 South Concord Street
| |
|
Tier 2 Significant Industrial User Local Limits
| |
|
Pollutant
|
30 Day Average
|
|
Al
|
NA
|
|
As
|
0.581 mg/L
|
|
Ba
|
NA
|
|
Cd
|
0.098 mg/L
|
|
Total Cr
|
0.199 mg/L
|
|
Cu
|
1.475 mg/L
|
|
Fe
|
NA
|
|
Pb
|
1.180 mg/L
|
|
Hg
|
NA
|
|
Mo
|
NA
|
|
Ni
|
6.937 mg/L
|
|
Se
|
0.127 mg/L
|
|
Ag
|
0.074 mg/L
|
|
Zn
|
4.801 mg/L
|
|
Total Phenols
|
115.833 mg/L
|
|
Total Cyanide
|
0.621 mg/L
|
|
Table 5
| |
|---|---|
|
Davenport Water Pollution Control Lagoon
| |
|
West Locust Street
| |
|
Significant Industrial User Local Limits
| |
|
Pollutant
|
30 Day Average
|
|
Al
|
NA
|
|
As
|
NA
|
|
Ba
|
NA
|
|
Cd
|
0.024 mg/L
|
|
Total Cr
|
0.924 mg/L
|
|
Cu
|
1.282 mg/L
|
|
Fe
|
NA
|
|
Pb
|
0.173 mg/L
|
|
Hg
|
NA
|
|
Mo
|
NA
|
|
Ni
|
1.099 mg/L
|
|
Se
|
NA
|
|
Ag
|
0.029 mg/L
|
|
Zn
|
5.00 mg/L
|
|
Total Phenols
|
NA mg/L
|
|
Total Cyanide
|
0.027 mg/L
|
C.
Discharge concentration
limits and review criteria.
1.
The admission into the POTW of any materials, water or waste
having a pollutant concentration or poundage greater than the limits
in Tables 1 through 5 above, or containing pollutants not listed herein,
shall be subject to the review and approval of the Water Pollution
Control Plant Manager. After review of the proposed discharges, the
Water Pollution Control Plant Manager may:
a.
Reject the waste for reasons consistent with Section 13.16.020.
b.
Require pre-treatment to an acceptable pollutant concentration
for discharge to the POTW.
c.
Require control of the quantities and rates of discharge of
the water or waste.
d.
Require payment to cover the added cost of handling and treatment
of water and waste or any combination thereof.
e.
Reduce the maximum or average mass loading of present and prospective
individual users on any reasonable prorated basis to meet headworks
loading limits at the POTW treatment plant.
f.
Require the user to obtain a wastewater discharge permit and
be subject to any of the rules and regulations contained therein.
g.
Require the user to meet local limits or NCPS in cases where
local limits are more restrictive than NCPS provided that headworks
loading limits are met.
h.
Initiate enforcement action in response to any non-compliance
with this ordinance using the enforcement procedures outlined in this
ordinance.
i.
Take any combination of steps a through h as appropriate.
2.
Users discharging wastewater to the POTW having pollutant concentrations
or flows greater than the limits in Table 8 shall be considered non-domestic
for purposes of sewer charges and may be regulated or permitted by
the Water Pollution Control Plant Manager as appropriate:
|
Table 8
| |
|---|---|
|
Domestic Pollutant Levels
| |
|
Pollutant
|
Domestic Limit
|
|
BOD
|
250 mg/L
|
|
TSS
|
300 mg/L
|
D.
No provision of this section shall be construed to provide lesser
discharge standards than are presently or may hereafter be imposed
and required by USEPA or IDNR, nor to allow the average allowable
total loading for any pollutant at the headworks of the POTW treatment
plant to be exceeded.
[Ord. 2018-354]
A.
Users subject to National Categorical Pretreatment Standards (NCPS)
as contained in 40 CFR Chapter I, Subchapter N, Parts 405 471 or future
promulgated regulations shall comply with the standards and applicable
reporting requirements under 40 CFR 403.12.
B.
New sources of categorical discharge shall meet NCPS in the shortest
feasible time but in no case longer than 90 days from the commencement
of discharge. Failure to comply shall be a violation of this ordinance
and subject the user to enforcement action.
C.
The POTW shall notify all known affected categorical users of the
applicable reporting requirements under 40 CFR 403.12. Failure of
the POTW to notify the User shall not relieve the user of the duty,
if any, to comply with NCPS.
D.
Where a categorical Pretreatment Standard is expressed only in terms
of either the mass or the concentration of a pollutant in wastewater,
the Water Pollution Control Plant Manager may impose equivalent concentrations
or mass limits in accordance with 40 CFR 403.6 (c).
E.
When the limits in a categorical Pretreatment Standard are expressed
only in terms of mass of pollutant per unit of production, the Water
Pollution Control Plant Manager may convert the limits to equivalent
limitations expressed either as mass of pollutant discharge per day
or effluent concentration for purposes of calculating effluent limitations
applicable to individual Industrial Users in accordance with 40 CFR
403.6 (c) (3) and (4).
F.
When wastewater subject to a categorical Pretreatment Standard is
mixed with wastewater not regulated by the same Standard, the Water
Pollution Control Plant Manager shall impose an alternate limit in
accordance with 40 CFR 403.6 (e).
G.
A Categorical User may obtain a net/gross adjustment to a categorical
Pretreatment Standard in accordance with 40 CFR 403.15
[Ord. 2018-354]
State requirements and limitations on discharges shall apply
in any case where they are more stringent than USEPA or City requirements
and limitations unless allowed by the state.
[Ord. 2018-354]
The City reserves the right to establish more stringent limitations
or requirements on discharges to the POTW than those contained in
this chapter if deemed necessary to comply with the purpose and policy
objectives presented in section 13.16.020.
[Ord. 2018-354]
A.
A user discharging, or with potential to discharge, any waste into
the POTW as set forth in section 13.16.055, 13.16.060, 13.16.065,
13.16.070 or 13.16.075 shall be required by the Water Pollution Control
Plant Manager to construct, install and operate, at the user's sole
expense, such pretreatment facilities as may be required in order
to:
1.
Reduce the objectionable characteristics or constituents to
within the maximum limits provided for in sections 13.16.055, 13.16.060,
13.16.065, and 13.16.070;
2.
Control the quantities and rates of discharge of such wastewater;
3.
Reduce the pollutants to such concentration and flows as may
be contained in the user's wastewater discharge permit;
(a)
New industrial users discharging into the POTW will be required
to design and operate their pretreatment facilities to meet the domestic
pollutant limits in Table 8.
(b)
Existing industrial users planning significant modifications
to their facility or discharge to the POTW will be required to install
and operate pretreatment facilities to meet the domestic pollutant
limits in Table 8.
4.
Prevent the discharge of liquid waste containing O&G, sand
in excessive amounts, any flammable waste, or other harmful pollutants.
All traps or similar devices shall be of a type and capacity needed
to perform effectively and shall be readily and easily accessible
for cleaning and inspection. All traps or devices shall be provided
and maintained in efficient operating condition at all times. Materials
removed from traps shall be considered unacceptable for disposal at
the POTW treatment plant unless specifically approved by the Water
Pollution Control Plant Manager.
B.
All plans, specifications, technical operating data and other information
pertinent to the proposed operation and maintenance of pretreatment
facilities shall be reviewed and approved by the Water Pollution Control
Plant Manager prior to construction. Design and installation of such
facilities shall be subject to the requirements of all applicable
codes, chapters and laws, including local zoning regulations. The
review and approval of such plans and operating procedures shall,
in no way, relieve the user from the responsibility of modifying the
facility as necessary to produce an effluent acceptable to the Water
Pollution Control Plant Manager under the provisions of this chapter.
Any subsequent changes in the pretreatment facilities or method of
operations shall be reported to and be acceptable to the Water Pollution
Control Plant Manager prior to the user's initiations of the changes.
C.
Users shall continuously maintain all pretreatment facilities required
by this chapter in satisfactory and effective operating condition
at the sole expense of such user.
D.
No provision contained in this chapter shall be construed to prevent
or prohibit a separate or special agreement between the City and any
user whereby wastewater containing waste of unusual strength, character
or composition may be accepted by the City for treatment, subject
to additional payment by such user; provided however, that such agreement
shall have the prior approval of the Water Pollution Control Plant
Manager, shall not conflict with IDNR and USEPA requirements, and
shall be consistent with sections 13.16.060(b), 13.16.065, 13.16.070
and 13.16.080(f) of this chapter.
E.
The Water Pollution Control Plant Manager may reject any waste, which,
in the opinion of the Water Pollution Control Plant Manager, may cause
interference or pass through.
F.
Users shall obtain the specific approval of the Water Pollution Control
Plant Manager prior to discharging any waste resulting from a pretreatment
facility to the POTW. The Water Pollution Control Plant Manager may
develop a documentation system to track the transportation and final
disposition of any pretreatment waste. Pretreatment waste regulated
by this paragraph shall include waste generated as a result of pretreatment
processes used to comply with NPDES permits, air pollution permits,
wastewater discharge permits, soil/groundwater reclamation processes,
and pollutants resulting from a spill of any liquid or solid material
or the clean up of any such spill. Pretreatment waste is prohibited
from disposal to the water of the state except as specifically permitted
by IDNR.
[Ord. 2018-354]
Users shall not increase the use of process water or, in any
way, attempt to dilute a discharge as a partial or complete substitute
for adequate pretreatment to achieve compliance with the limitations
contained in the NCPS, or with any other pollutant specific limitation
developed by the City.
[Ord. 2018-354]
A.
Users, who upon internal review by the user personnel or upon review
by the Water Pollution Control Plant Manager, are determined to have
the ability to cause interference or pass through at the POTW or to
discharge a slug shall provide protection from accidental discharge
to the POTW of prohibited materials or other substances regulated
by this chapter. Facilities to prevent accidental discharge of prohibited
materials shall be at the user's cost and expense.
B.
Slug/Spill Control Plan (SCP). Users meeting the criteria in subsection
A thereof shall develop a SCP and implement the plan after approval
by the Water Pollution Control Plant Manager. The plan shall contain
the following:
1.
A description of discharge practices, including non-routine
batch discharges;
2.
A description of stored chemicals;
3.
Procedures for immediately notifying the POTW of slug discharges,
including any that would violate the discharge prohibitions in section
13.16.055 of this chapter. Notification procedures shall comply with
paragraphs (c) and (d) of this subsection;
4.
A description of procedures and structures necessary to prevent
adverse POTW impact from accidental spills including inspection and
maintenance of storage areas, handling and transfer of materials,
loading and unloading operations, control of plant site run off, worker
training, building of containment structures or equipment, measures
for containing toxic organic pollutants (including solvents), and/or
measures and equipment for emergency response.
5.
A schedule for the completion or implementation of necessary
procedures and structures. Complete implementation and installation
of any procedures or structures shall be according to the shortest
possible schedule but in no case longer than one year. Review and
approval of such plans and operating procedures shall not relieve
the User from the responsibility to modify and operate its facility
as necessary to meet the requirements of this chapter.
C.
Users shall immediately telephone and notify the POTW in the case
of
1.
Any discharge, including, but not limited to, accidental discharges,
discharges of a non-routine episodic nature, a non-customary batch
discharge, or a slug discharge that may cause potential problems for
the POTW.
2.
Any discharge, which violates section 13.16.055 of this chapter.
3.
Any discharge into the POTW of a substance which is a listed
or characteristic waste under 40 CFR 261. This type of discharge will
also be require additional immediate reporting to the USEPA Regional
Director and IDNR.
D.
Immediate notification requirements shall include the name of caller,
location and time of discharge, pollutant concentration, volume and
the corrective actions taken.
E.
Users shall submit a written report to the Water Pollution Control
Plant Manager within five days following such an accidental or deliberate
discharge describing the cause of the discharge and the measures to
be taken by the user to prevent similar future occurrences. Users
shall submit follow up reports as may be required by the Water Pollution
Control Plant Manager. Such report, or reports, shall not relieve
the User of any expense, loss, damage or other liability which may
be incurred as a result of damage to the POTW, fish kills, or any
other damage to person or property; nor shall such report relieve
the user of any fines, civil penalties, or other liability which may
be imposed by this chapter or otherwise. Failure to report accidental
or deliberate discharges may, in addition to any other remedies available
to the City, result in the revocation of the discharger's wastewater
discharge permit.
F.
Users shall control production or all discharges to the extent necessary
to maintain compliance with all applicable regulations upon reduction,
loss, or failure of its pretreatment facility until the facility is
restored or an alternative method of pretreatment is provided. This
requirement applies in the situation where, among other things, the
primary source of power to the user's pretreatment facility is reduced,
lost or fails.
G.
Users required to have a SCP must permanently post a notice in English
and the language of common use on the user's bulletin board or other
prominent place advising employees whom to call should a prohibited
discharge occur. Users shall insure that all employees who are in
a position to cause, discover, or observe such an accidental discharge
are advised of the emergency notification procedures.
[Ord. 2018-354]
A.
For the purposes of this section, Upset means an exceptional incident
in which there is unintentional and temporary noncompliance with categorical
Pretreatment Standards because of factors beyond the reasonable control
of the User. An Upset does not include noncompliance to the extent
caused by operational error, improperly designed treatment facilities,
inadequate treatment facilities, lack of preventive maintenance, or
careless or improper operation.
B.
An Upset shall constitute an affirmative defense to an action brought
for noncompliance with categorical Pretreatment Standards if the requirements
of paragraph (c) are met.
C.
An User who wishes to establish the affirmative defense of Upset
shall demonstrate, through properly signed, contemporaneous operating
logs, or other relevant evidence that:
1.
An Upset occurred and the User can identify the cause(s) of
the Upset;
2.
The facility was at the time being operated in a prudent and
workman-like manner and in compliance with applicable operation and
maintenance procedures;
3.
The User has submitted the following information to the POTW
within 24 hours of becoming aware of the Upset (if this information
is provided orally, a written submission must be provided within five
days):
(a)
A description of the Indirect Discharge and cause of noncompliance;
(b)
The period of noncompliance, including exact dates and times
or, if not corrected, the anticipated time the noncompliance is expected
to continue;
(c)
Steps being taken and/or planned to reduce, eliminate and prevent
recurrence of the noncompliance.
D.
In any enforcement proceeding the Industrial User seeking to establish
the occurrence of an Upset shall have the burden of proof.
E.
Users will have the opportunity for a judicial determination on any
claim of upset only if an enforcement action brought for noncompliance
with categorical pretreatment.
F.
The User shall control production or all discharges to the extent
necessary to maintain compliance with categorical pretreatment standards
upon reduction, loss, or failure of its treatment facility until the
facility is restored or an alternative method of treatment is provided.
This requirement applies in the situation where, among other things,
the primary source of power of the treatment facility is reduced,
lost or fails.
[Ord. 2018-354]
A.
Bypass is prohibited unless it is unavoidable to prevent loss of
life, personal injury, or severe property damage or no feasible alternatives
exist such as the use of auxiliary treatment facilities, retention
of untreated waste, or maintenance during normal periods of equipment
downtime.
B.
The user may allow a bypass to occur which does not cause a violation
of pretreatment standards, but only if it is for essential maintenance
to assure efficient operation.
C.
Notification of Bypass:
1.
Anticipated Bypass. If the user knows in advance of the need
for a bypass, it shall submit prior written notice, at least 10 days
before the date of the bypass, to the Water Pollution Control Plant
Manager.
2.
Unanticipated Bypass. The user shall immediately notify the
Water Pollution Control Plant Manager and submit a written notice
to the POTW within five days. This report shall specify:
D.
Proper notification shall not relieve the user of liability for treatment
costs and fees or other remedies as provided for in Section 13.16.080.
[Ord. 2018-354]
Every person whose premises are served by connection to the
sanitary sewer system of the City either directly or indirectly, shall
pay to the City a comprehensive sewer service charge for the use of
and for services supplied by the wastewater facilities of the City,
which charges shall consist of:
(1)
A basic user charge;
(2)
A surcharge for the O & M of the wastewater treatment plant
for wastes contributed of strengths greater than domestic wastewater.
All users contributing wastewater in excess of the concentrations
hereafter listed shall be assessed a surcharge, which shall be in
addition to the rates and charges ordinarily billed to such users
for sewer use:
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Table 10
Surcharged Pollutants
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Pollutant
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BOD
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TSS
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(3)
A customer charge.
[Amended 5-24-2023 by Ord. No. 2023-229; Ord. 2018-354]
The rates for the comprehensive sewer service charges shall
be reviewed annually and established from time to time by City Council
ordinance and shall be as follows:
A.
For Basic User Charge. The basic user charge shall be based on the
quantity of flow estimated or actual flow of wastewater recorded by
meters. The unit charge for wastewater measured in 100 cubic feet
shall be computed as follows:
1.
Unit Cost. The unit cost per 100 cubic feet shall be determined
by dividing the anticipated budget for operation and maintenance of
the wastewater treatment plant and the sanitary sewer system including
debt service and anticipated, current year capital improvements by
the estimated quantity of flow billed to all users of the sanitary
sewer system.
B.
For Surcharge. The surcharge for the O & M cost of the wastewater
treatment plant shall be collected from those users who contribute
wastes which strengths are greater than domestic wastewater. These
users shall be sampled, and the sample analyzed at least once per
month.
1.
Monthly Excess BOD. The monthly excess BOD, expressed in milligrams
per liter, shall be calculated by subtracting the BOD of domestic
wastewater (250 milligrams per liter) from the monthly average BOD
of a user. If the value is less than zero, zero shall be used to compute
the average of excess BOD.
2.
BOD Surcharge Amount. The surcharge for BOD shall be calculated
by multiplying the excess BOD value by the unit BOD cost per pound.
3.
Monthly Excess SS. The monthly excess SS, expressed in milligrams
per liter, shall be calculated by subtracting the SS of domestic wastewater
(300 milligrams per liter) from the monthly average SS of a user.
If the value is less than zero, zero shall be used to compute the
average of excess SS.
4.
SS Surcharge Amount. The surcharge for SS shall be calculated
by multiplying the excess SS value by the unit SS cost per pound.
The total surcharge shall then be a summation of the surcharge for
BOD and the surcharge for SS.
C.
For the Customer Charge.
1.
The cost of determining the amount due from each user and the
collecting of same shall be borne by the user. Each user shall be
billed on a regular basis, i.e., monthly or quarterly, for the amount
of the comprehensive sewer service charges.
2.
Each regular bill shall be increased by a charge to defray the
cost of computing and mailing the bill. The cost per bill will be
determined by dividing the anticipated budget, including the portion
of the debt service and the anticipated current year capital improvements,
by the total number of bills mailed to the users.
D.
For single-family detached residential customers who are billed quarterly,
the basic user charge shall be computed using the rate as determined
in subsection A of this section, multiplied by the actual amount of
water supplied by the water company (Iowa-American Water Company)
as shown by the water meter readings of that company or 35 ccf, whichever
is less. All other customers shall pay a basic user charge based upon
the amount of water supplied by the water company as shown by the
water meter readings of that company.
E.
Special Rates. Grounds; Approval. Where, in the judgment of the Council,
special conditions surround the use of water to the extent that the
application of the comprehensive sewer user charge or method of measurement
would be inequitable or unfair to either the City or the user, a special
rate or method of measurement shall be established by the City. Such
rates or methods of measurement shall be subject to approval by resolution
of the Council. In such cases, the City Council may require that water
consumed on the premises concerned shall be separately metered at
the expense of the user, who shall also pay the cost of the reading
resulting there from. In all cases, the comprehensive sewer user charge
resulting shall be on an equal basis as nearly as may be with charges
which would apply to an equal quantity and character of waste of other
users of the wastewater system.
F.
Replacement Component. Calculation; Use. The replacement component
shall be 15% of the operation and maintenance (O & M) budget approved
for the wastewater treatment plant in each fiscal year. The replacement
component shall be calculated in each fiscal year and shall be added
to the total O & M budget for the wastewater treatment plant for
such year. Any portion of a replacement component which has not been
used in a fiscal year shall not lapse but shall be retained, together
with any interest accrued thereon; shall be carried forward and combined
with any unused portion of any other replacement component for the
current fiscal year, to be used to replace equipment at the wastewater
treatment plant. A replacement component and any unused portion of
a prior replacement component, plus any interest thereon, which has
been carried forward as herein provided, shall be used only to replace
equipment at the wastewater treatment plant. The O & M budget
for the wastewater treatment plant plus the replacement component
for the current fiscal year shall be used as the anticipated budget
for calculating comprehensive sewer service charges for the use of
the wastewater treatment plant.
G.
All sewer fees billed after the ordinance effective date will use
the revised rate schedule.
[3-9-2022 by Ord. No. 2022-126; Ord. 2018-354; Ord. 2018-87 §§ 1-9; Ord. 2016-160 §§ 1-3; Ord. 2014-85 §§ 1 —
4; Ord. 2013-277; Ord. 2012-49 §§ 1 — 4; Ord. 2010-60 § 1-4; Ord. 2008-155 § 1; Ord.
2007-91 § 1; 2003-27 § 1 (part)]
The rates for comprehensive sewer service supplied by the wastewater
facilities of the City shall be as follows:
A.
1.
Effective
July 1, 2022: 572.00 cents per one hundred cubic feet of water use
as determined by water meter readings.
2.
Effective
July 1, 2023: 601.00 cents per one hundred cubic feet of water use
as determined by water meter readings.
3.
Effective
July 1, 2024: 631.00 cents per one hundred cubic feet of water use
as determined by water meter readings.
C.
8.08 cents per pound of excess "BOD" over domestic strength wastewater.
D.
17.61 cents per pound of excess suspended solids over domestic strength
wastewater.
E.
15,000 CCF Maximum Flow Per Day. The average flow shall be determined
by dividing the total flow in the billing period by the number of
days in the billing period. If the average flow exceeds 15,000 ccf
per day, the quantity of 15,000 ccf multiplied by the number of days
in the billing period shall be substituted in the calculation.
[Amended 5-11-2022 by Ord. No. 2022-245; Ord. 2018-354]
A.
Unpaid
sewer fees will be handled by one or a combination of the following
collection methods:
1.
The
City Treasurer shall certify to the County Treasurer any comprehensive
sewer user charge which is owed 60 days after the invoice is issued.
All certified charges constitute a lien upon the premises served by
the sanitary sewer system for which the charges were made and shall
be collected in the same manner as taxes. Failure to send or receive
a bill for comprehensive sewer user charges is not a defense to the
collection of the charges.
2.
Add
a collection fee to customer balances and turn accounts over to a
collection agency.
3.
Turn
accounts over to the State of Iowa to participate in the Iowa Income
Offset program which is covered under Chapter 8A.504 of the Iowa Code.
4.
City
staff may order suspension of utility services to those premises for
which the comprehensive sewer and/or clean water user charge is delinquent
including but not limited to notifying Iowa American Water (IAW) to
suspend water service as allowed by State of Iowa Code §476.20(I)(b)
and 199 IAC 21.4(7).
a.
Disconnection of service shall be permitted according to the conditions:
i.
The City must enter into an agreement with Iowa American Water.
ii.
The City shall notify the person promptly of the reason for refusal
to serve and the person's right to file a complaint with the Iowa
Utilities Board.
iii.
The customer must have a combined delinquent balance of sewer
and clean water fees in excess of an amount to be established by the
Finance Director after notice is provided to the Mayor and City Council.
iv.
The City must send a letter to the customer notifying the customer
of the delinquent balance, allow the customer 12 days to respond excluding
Sundays and holidays.
v.
Allow the customer to enter up to two written agreements for the
duration of 12 months to pay off the delinquent balance.
vi.
Reconnect fees must be consistent with the water utilities approved
tariff.
5.
Collection
fees shall be established by and additional collection methods may
be initiated by the Finance Director.
[Added 3-22-2023 by Ord. No. 2023-130; Ord. 2018-354]
Fees for Compost tipping, Water Pollution Control Plant hauled
waste, Water Pollution Control Plant permits for hauled waste, and
the sale of Compost goods shall be set by resolution of the City Council.
