1. No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will cause pass through or interference with the operation or performance of the POTW. These general prohibitions apply to all such users of a POTW whether or not the user is subject to National Categorical Standards or any other National, State, or local pretreatment standards or requirements. A user may not contribute the following substances to the POTW:
A. Quantities of liquids, solids or gases (including, but not limited to, gasoline, kerosene, naptha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides) which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any way to the POTW or to the operation of the POTW including, but not limited to, any discharge with a closed-cup flashpoint of less than 140ºF (60ºC) using the test methods specified in 40 CFR 261.21. At no time, shall any wastewater cause two successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system), to be more than 5% nor any single reading to be over 10% of the lower explosive limit (LEL) of the meter.
B. Solid or viscous pollutants in amounts which will cause obstruction to the flow in the POTW resulting in interference including, but not limited to, grease, garbage, solids greater than 3 inches in any dimension, animal guts or 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, gas, tar, asphalt residues, residues from refining, or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.
C. Pollutants which will cause any damage to the POTW, but in no case may pollutants being discharged have a pH lower than 5.0 nor greater than 11.5.
D. Pollutants in sufficient quantity which, either alone or by interaction with other pollutants, would result in the presence of toxic gases, vapors or fumes, cause worker injury or disruption of any wastewater treatment process, including the disposal of sludge, or would be in noncompliance with any categorical or pretreatment standards established in accord with 40 CFR § 403.6.
E. Noxious or malodorous liquids, gases, or solids which either alone or by interaction with other wastes, cause a public nuisance or hazard to life or prevent entry into the POTW for maintenance and repair.
F. Pollutants, including oxygen demanding pollutants, released in a discharge at a flow rate and/or concentration which will cause interference with the POTW or collection system.
G. Substances which will cause pass through and cause the POTW to violate its NPDES and/or State solid waste disposal system permit(s) or the air quality and/or receiving water quality standards.
H. Wastewater with excessive discoloration not removed in the POTW treatment process, including, but not limited to, dye wastes and vegetable tanning solutions, which causes or contributes to interference, pass through, or any violations at the POTW Treatment Plant.
I. Heat in amounts producing interference, but in no case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40ºC (104ºF). At no time shall a discharge to the POTW have a temperature higher than 150ºF or less than 32ºF.
J. Slug loads as defined in § 18-711 of this Part 7(B).
K. Wastewater containing any radioactive material or isotopes of such half-life or concentration as may cause pass through or interference in the POTW or exceed limits established by the Superintendent in compliance with applicable Delaware River Basin Commission, State or Federal regulations.
L. Petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through.
M. Discharge of mineral/petroleum oil and grease in concentrations greater than 100 mg/l and animal/vegetable oil and grease in concentrations greater than 300 mg/l.
N. Discharge of holding tank waste or septage, except as provided for in § 18-723.08 of this Part 7(B).
O. Discharge which, if otherwise disposed of, would be considered a hazardous waste as defined in 40 CFR Part 261, without prior notification by the user in writing to the POTW, the State and EPA in accordance with 40 CFR 403.12(p)(1) and written approval by the Superintendent.
P. New or increased discharges or changes in the nature of discharges without prior notification to the POTW and written approval by the Superinten dent.
Q. Stormwater, surface water, ground water, artesian well water, roof runoff, subsurface drainage, unpolluted industrial process water, unpolluted cooling water or swimming pool drainage, unless specifically authorized by the Superintendent.
R. Sludges, screenings, or other residues from the pretreatment of industrial wastes, unless specifically authorized by the Superintendent.
S. Wastes generated in the diagnosis, treatment, immunization, or autopsy of human beings or animals, in research pertaining thereto, or in the preparation of human or animal remains for burial or cremation, unless specifically authorized by the Superintendent.
T. Wastewater, alone or in conjunction with other sources, causing the POTW treatment plant’s effluent to fail a toxicity test.
U. Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW or collection system.
When the Industrial Pretreatment Coordinator determines that a user is contributing to the POTW any of the above enumerated substances in such amounts as to cause pass through or interference with the operation of the POTW and/or POTW treatment plant, the Industrial Pretreatment Coordinator shall: (A) Notify the user of the impact of the contribution on the POTW and/or POTW treatment plant; (B) Develop effluent limitation(s), as needed, for the user to correct the pass through or interference with the POTW and/or POTW treatment plant; and (C) Proceed with enforcement pursuant to the provisions of § 18-715 of this Part 7(B).
Pollutants, substances, or wastewater prohibited by this Section shall not be processed or stored in such a manner that they have a reasonable potential to be discharged to the POTW or collection system.
2. National Pretreatment Standards and National Categorical Standards. All industrial users are subject to the National Pretreatment Standards. The National Categorical Standards found at 40 CFR Chapter I, Subchapter N, Parts 405-471 are hereby incorporated into this Part 7(B) by reference as though set forth in full. Industrial users must comply with all applicable categorical standards and other requirements promulgated by EPA. Any categorical standard, if more stringent than the limitations imposed under this Part 7(B), shall immediately supersede the limitations imposed under this Part 7(B).
A. Where a categorical standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Industrial Pretreat ment Coordinator may impose equivalent concentration or mass limits in accordance with 40 CFR 403.6(c).
B. When wastewater subject to a categorical standard is mixed with waste water not regulated by the same standard, the Industrial Pretreatment Coordinator shall impose an alternate limit using the combined waste stream formula in 40 CFR 403.6(e).
C. An industrial user may obtain a variance from a categorical standard from EPA if the industrial user can prove, pursuant to the procedural and substantive provisions in 40 CFR 403.13, that factors relating to its discharge are fundamentally different from the factors considered by EPA when developing the categorical standard. If a variance is obtained, the City or Township reserves the right to modify the industrial user’s permit to incorporate the revised standards and requirements.
D. An industrial user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15.
3. Modification of National Categorical Standards. Where the City’s POTW treatment plant achieves consistent removal of pollutants limited by National Categorical Standards, the City may apply to the approval authority for modification of specific limits in the National Categorical Standards. “Consistent removal” is defined by EPA in 40 CFR 403.7(b). The City may then modify pollutant discharge limits in the National Categorical Standards if the require ments contained in 40 CFR, Part 403, § 403.7, are fulfilled and prior approval from the approval authority is obtained.
4. Specific Pollutant Discharge Limitations - Local Limits. In accordance with 40 CFR 403.5(c), the City and Township imposes the following specific pollutant discharge limitations for all industrial users:
Pollutant (Total) | Local Limit (mg/l) |
Arsenic | 0.11 |
Cadmium | 0.05 |
Chromium | 0.91 |
Copper | 1.35 |
Lead | 0.39 |
Mercury | 0.007 |
Molybdenum | 0.22 |
Nickel | 1.36 |
Selenium | 0.23 |
Silver | 0.21 |
Zinc | 2.58 |
Cyanide | 0.38 |
The specific pollutant discharge limitations listed above are the highest allowable concentration in any type of sample, either a grab or composite, collected over any time interval, unless otherwise specified in an IWDP.
The specific pollutant discharge limitations listed above apply at the point where the wastewater is discharged to the POTW or at the point designated by the Industrial Pretreatment Coordinator.
In addition to industrial users, the City and Township reserve the right to apply the specific pollutant discharge limitations listed above to any user’s wastewater discharge which is not composed of strictly domestic sewage.
The City reserves the right to establish alternate specific pollutant discharge limitations in individual industrial waste discharge permits, but only in accordance with regulatory requirements. In no event shall any alternate limit allow the total loading allocated to all industrial users for any pollutant to exceed the maximum allowable industrial headworks loading as determined in the City’s most recent local limits evaluation approved by the approval authority. The specific pollutant discharge limitations, if more stringent than the National Categorical Standards, shall immediately supersede the National Categorical Standards.
5. State Requirements. State requirements and limitations on discharges shall apply in any case where they are more stringent than Federal requirements and limitations or those in this Part 7(B).
6. City and Township’s Right of Revision. The City and Township reserve the right to establish by ordinance more stringent limitations or requirements on discharges to the POTW if deemed necessary.
7. Excessive Discharge. No user shall increase the use of process water solely for the purpose of complying with this Part 7(B) or in any way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in the National Categorical Standards, or in any other pollutant-specific limitation developed by the Township, City or State. The Industrial Pretreatment Coordinator may impose mass limitations on users who are using dilution to meet applicable National Categorical Standards, or in any other pollutant-specific limitations or requirements, or in other cases when the imposition of mass limitations is appropriate.
8. Accidental Discharges/Slug Loads. Each industrial user shall provide protection from accidental discharges/slug loads of prohibited materials or other substances regulated by this Part 7(B). Where facilities are provided to prevent accidental discharges/slug loads of prohibited materials, these facilities shall be provided and maintained at the industrial user’s own cost and expense. In the case of an accidental discharge/slug loads, it shall be the responsibility of the industrial user, upon discovery, and after assessing the situation and taking initial corrective action, to immediately telephone and notify the Industrial Pretreat ment Coordinator of the incident. The notification shall include location of discharge, type of waste, estimated concentration and volume if known, and initial corrective actions taken by the industrial user.
A. Written Notice. Within 5 days following a accidental discharge/slug loads; the industrial user shall submit to the Industrial Pretreatment Coordinator a detailed written report including the date, time, duration of the discharge as well as describing the cause of the discharge, all corrective measures implemented or attempted, and measures to be taken by the industrial user to prevent similar future occurrences. Such notification shall not relieve the industrial user of any expenses, 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 notification relieve the industrial user of any fines, civil penalties, or other liability which may be imposed by this Part 7(B) or other applicable articles or laws.
B. Notice to Employees. A notice shall be permanently posted on the industrial user’s bulletin board or other prominent place advising employees whom to call in the event of an accidental discharge/slug load. Employers shall insure that all employees are advised of the emergency notification procedures.
9. Accidental Discharge/Slug Control Plans. An Accidental Discharge or Slug Control Plan, as prescribed under 40 CFR 403.8(f)(2)(v), shall be required:
A. For New Source Industrial Users. Detailed plans showing facilities and operating procedures to provide protection from accidental discharges or slugs shall be submitted to the City and Township for review as part of the IWDP application, and shall be approved by the City and Township before construction of the facility.
B. For Existing Industrial Users. The Industrial Pretreatment Coordinator shall evaluate whether each industrial user needs a new or updated accidental discharge/slug control plan.
10. Should the Industrial Pretreatment Coordinator require the industrial user to develop, submit for approval, and implement a new or updated accidental discharge/slug control plan, the accidental discharge/slug control plan shall address, at a minimum, the following:
A. Description of discharge practices, including non-routine batch discharges.
B. Description of stored chemicals.
C. Procedures for immediately notifying the Industrial Pretreatment Coordinator of any accidental or slug discharge, as required by § 18-712(8) of this Part 7(B).
D. Procedures to prevent adverse impact from any accidental or slug discharge. Such procedures shall include, but are not limited to, inspection and maintenance of storage areas, handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents, and/or measures and equipment for emergency response.
When an existing industrial user is required by the Industrial Pretreatment Coordinator to provide and/or modify an accidental discharge/slug control plan, the industrial user shall provide the plan within 60 days of notification. Should the plan require construction or implementation of measures to meet compliance, the plan shall provide a schedule for those actions. After initial review, should additional information be required to provide a complete plan, it shall be furnished to the Industrial Pretreatment Coordinator within 30 days of the date of notification. Failure to submit a revised plan and/or failure to provide a complete plan after the 30-day submission period may render the industrial waste discharge permit void.
The City and Township’s review and approval of accidental discharge/slug control plans shall not relieve the industrial user from the responsibility to modify the industrial user’s facility as necessary to meet the requirements of this Part 7(B).
If not specifically required by the Industrial Pretreatment Coordinator, the information, requirements, etc., called for in a plan are not waived by the City and Township and the industrial user shall provide all necessary items, procedures, etc., to prevent any accidental discharge and/or slug discharge to the POTW.
An approved State pollution prevention plan may substitute for all or a portion of the contents of an accidental discharge/slug control plan to the extent that it satisfies the requirements described herein.
All users are required to notify the POTW immediately of any changes at its facility affecting potential for a slug discharge.
(Ord. 495, 6/17/2009)