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The following general prohibitions 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:
1. Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to, waste streams with a closed cup flashpoint of less than 140ºF (60ºC) using test methods referenced in 40 CFR 261.21. Waste streams shall not be ignitable at ambient temperatures. 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 five percent (5%), nor any single reading greater than ten percent (10%).
2. Substances which will cause corrosive structural damage to the POTW, but in no case discharges with pH lower than 5.0 or greater than 12.0.
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 (½) inch in 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, wipes, 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 wax, FOG, or other substances which may solidify or become viscous at temperatures between 32º and 150ºF (0º and 65ºC).
(Ord. 1959 - Feb. 19 Supp.)
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 WRF 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 150ºF (65ºC) at the point of introduction into the POTW; and in no case wastewater or vapor which alone or in concert with other discharges produces a temperature at the WRF greater than 104ºF (40ºC).
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 WRA.
9. Any radioactive material as defined in the Atomic Energy Act of 1954, as amended, and as defined in I.C. §136C.1, except materials which meet conditions of disposal by release into sanitary sewage pursuant to 10 CFR 20.2003.
(Ord. 2118 - Sep. 22 Supp.)
10. Any wastewater containing concentrations of inert suspended solids (such as, but not limited to, fuller’s earth, lime slurries, and lime residues), or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate), which exceed 3000 mg/l non-volatile or 3000 mg/l total dissolved solids unless approved by the Administrator or Director.
11. Pollutants causing excessive discoloration (such as, but not limited to, dye waste and vegetable tanning solutions).
12. Hazardous Waste Pharmaceuticals for human or animal use as defined in 40 CFR 266.500.
(Ord. 2118 - Sep. 22 Supp.)
1. Generally. Local limits for specific pollutants discharged pursuant to this chapter shall be as follows:
A. Dilution. Dilution of the discharge from a pretreatment facility or from a regulated process is prohibited as a method for treatment of wastes in order to meet the limits set forth in this chapter.
B. 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 WRA Director. 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.
2. 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 Director provided that the allowable total loading for any pollutant at the headworks of the WRF is not exceeded.
30-day Average Allowable Pounds/Day | ||
Pollutant | Total | Industrial |
BOD | 195,600 | 135,153 |
TSS | 300,400 | 208,463 |
NH
3 |
13,000 | 6,959 |
TKN | 27,760 | 16,950 |
Maximum Allowable Headworks Loading Pounds/Day | Maximum Allowable Industrial Loading Pounds/Day | |
Pollutant | Total | Industrial |
Maximum Allowable Headworks Loading Pounds/Day | Maximum Allowable Industrial Loading Pounds/Day | |
Pollutant | Total | Industrial |
Arsenic – T | 7.58 | 3.81 |
Cadmium – T | 3.65 | 2.16 |
Chromium - T | 136.35 | 120.90 |
Copper – T | 148.56 | 125.51 |
Cyanide – T | 17.08 | 8.28 |
Lead – T | 28.17 | 20.94 |
Mercury - T | 0.999 | 0.747 |
Nickel – T | 87.27 | 75.75 |
Silver – T | 23.30 | 19.77 |
Zinc - T | 360.59 | 283.53 |
(Ord. 1959 - Feb. 19 Supp.)
3. Discharge Concentration Limits and Review Criteria.
A. The discharge into the POTW of any materials, water, or waste having a pollutant concentration greater than the limits in subsections C, D and E below, or containing pollutants not listed herein, shall be subject to the review and approval of the WRA Director. After review of the proposed discharges, the Director may:
(1) Reject the waste for reasons consistent with Section 100.05.
(2) Require pretreatment to an acceptable pollutant concentration for discharge to the POTW.
(3) Require control of the quantities and rates of discharge of the water or waste to prevent slug loads.
(4) Require payment to cover the added cost of handling and treatment of water and waste or any combination thereof.
(5) 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 WRF..
(6) Require the user to obtain a wastewater discharge permit and be subject to any of the rules and regulations contained therein.
(7) Require the user to meet local limits where local limits are more restrictive than NCPS, provided that headworks loading limits are met.
(8) Initiate enforcement action in response to any noncompliance with this chapter using the enforcement procedures outlined in this chapter.
(9) Take any combination of steps (1) through (7) as appropriate.
B. Users discharging wastewater to the POTW having pollutant concentrations or flows greater than the following shall be considered industrial users for purposes of sewer charges and may be regulated or permitted by the Director as appropriate:
Pollutant | Daily Maximum (mg/l) |
Pollutant | Daily Maximum (mg/l) |
BOD | 200 |
TSS | 250 |
COD | 300 |
FOG – T | 100 |
TKN | 30 |
NH
3
- N | 15 |
An average daily flow greater than 5000 gallons or having an unusual concentration of flow.
(Ord. 1959 - Feb. 19 Supp.) | |
C. Pollutant Limits. Average and maximum concentration limits for users without an NCPS for these pollutants shall be:
30-day Average Allowable Pounds/Day | ||
Pollutant | Daily Maximum (mg/l) | Monthly Average (mg/l) |
30-day Average Allowable Pounds/Day | ||
Pollutant | Daily Maximum (mg/l) | Monthly Average (mg/l) |
Arsenic – T | 0.38 | 0.25 |
Cadmium – T | 0.08 | 0.05 |
Chromium - T | 6.43 | 4.29 |
Copper – T | 10.21 | 6.80 |
Cyanide – T | 0.53 | 0.36 |
Lead – T | 1.43 | 0.95 |
Mercury – T | 0.042 | 0.028 |
Nickel – T | 7.22 | 4.81 |
O&G – T | 400.0 | -- |
O&G – Mineral | 100.0 | -- |
Silver – T | 1.30 | 0.87 |
TVPH | 10.0 | -- |
Zinc - T | 19.64 | 13.09 |
(Ord. 1959 - Feb. 19 Supp.)
D. Daily maximum pollutant limits for hauled waste. Wastes delivered to the WRF by truck or rail shall not exceed the following concentrations in any load or overall daily loading limits unless otherwise approved by the WRA Director:
Pollutant | Concentration (mg/l) | Loading (pounds/day) |
Pollutant | Concentration (mg/l) | Loading (pounds/day) |
COD | 100,000 | -- |
O&G-T | 50,000 | -- |
VPH | 10.0 | -- |
Arsenic – T | -- | 0.014 |
Cadmium – T | -- | 0.93 |
Chromium – T | -- | 24.74 |
Copper – T | -- | 23.71 |
Cyanide - T | -- | 0.29 |
Lead – T | -- | 6.70 |
Mercury – T | -- | 0.12 |
Nickel - T | -- | 3.71 |
Silver-T | -- | 0.26 |
Zinc – T | -- | 87.62 |
pH range shall be not lower than 5.0 or greater than 12.0 | ||
(Ord. 1959 - Feb. 19 Supp.)
E. Gasoline Cleanup Projects – Daily Maximum Limit. Discharge of wastewater from sites where gasoline is being removed from soil or groundwater shall meet the following limits prior to discharge to the POTW:
Pollutant | (mg/l) |
Benzene | 0.050 |
BETX | 0.750 |
4. No provision of this section shall be construed to provide lesser discharge standards than are presently or may hereafter be imposed and required by U.S. EPA or IDNR, or to allow the average allowable total loading for any pollutant at the headworks of the WRF to be exceeded.
Users subject to National Categorical Pretreatment Standards (NCPS) as contained in 40 CFR Chapter I, Subchapter N, Part 405-471, shall comply with the standards and applicable reporting requirements under 40 CFR 403.12. 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 chapter and subject the user to enforcement action. The WRA or City shall notify all known affected categorical users of the applicable reporting requirements under 40 CFR 403.12. Failure to notify the user shall not relieve the user of the duty, if any, to comply with NCPS.
1. A user discharging, or with potential to discharge, any waste into the POTW as set forth in Sections 100.08, 100.09, or 100.10 shall be required by the WRA Director to construct, install and operate, at the user's sole expense, such pretreatment facilities as may be required in order to:
A. Reduce the objectionable characteristics or constituents to within the maximum limits provided for in Sections 100.08, 100.09, 100.10 and 100.11;
B. Control the quantities and rates of discharge of such wastewater;
C. Reduce the pollutants to such concentration and flows as may be contained in the user’s wastewater discharge permit;
D. Prevent the discharge of liquid waste containing FOG, 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 WRF unless specifically approved by the WRA Director.
2. 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 WRA Director prior to construction. Design and installation of such facilities shall be subject to the requirements of all applicable codes, ordinances 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 WRA Director 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 WRA Director prior to the user's initiations of the changes.
3. Users shall continuously maintain all pretreatment facilities required by this chapter in satisfactory and effective operating condition at the sole expense of such user.
4. No provision contained in this chapter shall be construed to prevent or prohibit a separate or special agreement between the WRA and any user whereby wastewater containing waste of unusual strength, character or composition may be accepted for treatment, subject to additional payment by such user; provided, however, that such agreement shall have the prior approval of the WRA Board, shall not conflict with IDNR and U.S. EPA requirements, and shall be consistent with Sections 100.09(2), 100.10, 100.11 and 100.12(6) of this chapter.
5. The WRA Director may reject any waste which, in the opinion of the Director, may cause interference or pass through.
6. Users shall obtain the specific approval of the WRA Director prior to discharging any waste resulting from a pretreatment facility to the POTW. The Director may develop a documentation system to track the transportation and final disposition of any pretreatment waste. Pretreatment waste regulated by this section 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 cleanup of any such spill. Pretreatment waste is prohibited from disposal to the water of the State except as specifically permitted by IDNR.
Users shall not increase the use of process water or attempt, in any way, 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 WRA or its operating contractor.
1. Users having the ability to cause interference or pass through 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 constructed, installed, operated and maintained at the user’s sole cost and expense.
2. Users meeting the criteria in subsection 1 thereof shall develop a Spill Containment Plan (SCP). The plan shall require the approval of the WRA Director and shall contain the following:
A. A description of discharge practices, including non-routine batch discharges.
B. A description of stored chemicals.
C. Procedures for immediately notifying the WRA of slug discharges, including any that would violate the discharge prohibitions in Section 100.08 of this chapter. Notification procedures shall comply with subsections 3 and 4 of this section.
D. 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.
E. 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.
3. Users shall immediately telephone and notify the WRA in the case of an accidental or deliberate discharge of pollutants which violates Section 100.08 of this chapter or is a slug load. Any discharge into the POTW of a substance which is a listed or characteristic waste under Section 3001 of RCRA must be immediately reported to the U.S. EPA Regional Director, IDNR, and the WRA. Notifications required in this section shall include the name of caller, location and time of discharge, pollutant concentration, volume and the corrective actions taken.
4. Users shall submit a written report to the WRA Director within five (5) 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 Director. 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.
5. 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.
6. 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.
Users shall inform the WRA Director within one hour of becoming aware of an upset in operations that places it in a temporary state of noncompliance with the pollutant limits in this chapter. Users shall provide a follow-up written report to the Director within five (5) days. The report must demonstrate that the pretreatment facility was being operated in a prudent and appropriate manner and shall contain:
1. A description of the upset, its cause(s), and impact on the user's compliance status.
2. The duration of noncompliance, including exact dates and times of noncompliance, and if the noncompliance is continuing, the time by which compliance is reasonably expected to be restored.
3. All steps taken or planned to reduce, eliminate, and prevent recurrence of such an upset.
1. 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 down time.
2. 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.
3. Notification of Bypass:
A. Anticipated Bypass. If the user knows in advance of the need for a bypass, it shall submit prior written notice, at least ten (10) days before the date of the bypass, to the WRA Director.
B. Unanticipated Bypass. The user shall immediately notify the Director and submit a written report to the WRA within five (5) days. This report shall specify:
(1) A description of the bypass, its cause and the duration;
(2) Whether the bypass has been corrected;
(3) The steps being taken or to be taken to reduce, eliminate and prevent a reoccurrence of the bypass.
Proper notification shall not relieve the user of liability for treatment costs and fees or other remedies as provided for in Section 100.12.
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