1. Prohibited Discharge Standards.
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 which create a fire or explosive hazard in the POTW including, but not limited to, wastestreams with a closed-cup flashpoint of less than 140° F (600°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), or otherwise causing corrosive structural damage to the POTW or equipment.
(3) Solid or viscous substances in amounts which, alone or in combination with other substances, will cause obstruction of the flow in the POTW resulting in interference.
(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.
(5) Wastewater having a temperature 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 treatment plant to exceed 104°F (400°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.
(8) Trucked or hauled pollutants, except at discharge points designated by the Township Manager in accordance with § 18-603(4) of this Part.
(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 Township's NPDES permit.
(11) Wastewater containing any radioactive wastes or isotopes except in compliance with applicable State and Federal regulations.
(12) Stormwater, surface water, ground water, artisan well water, roof runoff, subsurface drainage, significant quantities of condensate, deionized water, noncontact cooling water and unpolluted water, unless specifically authorized by the Township Manager.
(13) Sludges, screenings or other residues from the pretreatment of industrial wastes.
(14) Medical wastes, except as specifically authorized by the Township Manager in a wastewater discharge permit.
(15) Wastewater causing, along or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
(16) Detergents, surface-active agents or other substances which may cause excessive foaming in the POTW or its discharge.
(17) Fats, oils or greases of animal or vegetable origin in concentrations greater than two hundred (200) mg/l. 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.
C. Surcharge.
(1) Nothing contained in this Section shall prohibit any special agreement or arrangement between the Township and any person under which waste of unusual strength or character may be admitted into the POTW. Such waste will be subject to payment of a surcharge therefore by such persons, or by proper and continuous pretreatment before discharge into the sewerage system. However, no such special agreement or arrangement shall allow violation of Federal pretreatment requirements. The surcharge shall be revised annually, and shall be initially determined by the following formula:
QUARTERLY SURCHARGE = 8.34 Q [(BOD-300) $0.085 + (85-360) $0.076 + (TKN - 85) $0.1841
Where: 8.34 is a constant used to convert waste strength expressed in mg/I of BOD and/or SS and/or TKN into pounds of BOD and/or SS and/or TKN per million gallons of waste.
Q is the quarterly waste flow from an unproved property expressed in millions of gallons.
BOD is the biochemical oxygen demand of the waste in mg/l.
SS is tile suspended solids of the waste in mg/1
TKN is the total Kjeldahl nitrogen of the waste in mg/l.
The allowable waste strengths in mg/I prescribed in this Section for biochemical oxygen demands, suspended solids, and total Kjeldahl nitrogen are 300, 360 and 85.
(a) To determine the strength of every waste requiring a surcharge, the Township shall sample and analyze 4 times each year. For users discharging more than 1,000,000 gallons per day, sampling shall consist of seven 24 hour composite samples taken every day for seven consecutive days. For users discharging less than 1,000,000 gallons per day, the Township will determine appropriate sampling and analyses periods. The Township will consider any relevant factors an industry brings forth in deciding the sampling period. The average of said analyses shall be used to establish the surcharge for the quarter during which the samples are taken and quarterly billings shall be made by the Township.
(b) A penalty of 5% shall be added to bills not paid within 30 days of the date of the bill. If the bill is not paid within 60 days, a second penalty of 5% shall be added to the amount of the bill. Commencing with the 61st day of the unpaid bill, there shall be a carrying charge of 1% per month or fraction of a month of the outstanding balance added to the amount of the bill.
(2) Waste from any source in any of the following categories shall not be discharged into the sewerage system:
(a) Waste having BOD greater than 300 mg/1, unless permitted by a surcharge agreement as provided in subsection (1), hereof.
(b) Waste having a content of suspended solids greater than 360 mg/l unless permitted by a surcharge agreement as provided in subsection (1), hereof.
(c) Waste having a content of total Kjeldahl nitrogen greater than 85 mg/I unless permitted by a surcharge agreement as provided in subsection (1), hereof.
(3) Whenever the approving authority shall deem it necessary for the protection and safe, economical and efficient management of the POTW, the owner of an improved property shall provide at the owner's expense such facilities for preliminary treatment and processing of industrial waste as may be necessary to:
(a) Reduce BOD to 300 mg/1 and suspended solids to 360 mg/1 and total Kjeldahl nitrogen to 85 mg/l.
2. National Categorical Pretreatment Standards. The categorical pretreatment standards found at 40 CFR, Chapter I, Subchapter N, Parts 405-471, are hereby incorporated.
A. Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Township Manager may impose equivalent concentration or mass limits in accordance with 40 CFR § 403.6 (c).
B. When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the Township Manager shall impose an alternate limit using the combined wastestream formula in 40 CFR § 403.6 (e).
C. 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 fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard.
D. A user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR § 403.15.
3. State Pretreatment Standards. Reserved.
4. Local Limits. Limits for discharging pollutants which are of concern to the POTW will be made using headworks loading analyses which has been reviewed and approved by the Township Manager. Allocations for discharging such pollutants will be made to each significant industrial user. Limits may be in the form of monthly average concentration, daily maximum concentration or instantaneous maximum concentration. Limits will be contained in the wastewater discharge permits issued. All concentrations for metallic substances are for "total" metal unless indicated otherwise. The Township Manager may impose mass limitations in addition to, or in place of, the concentration based limitations above.
5. Township's Right of Revision. The Township reserves the right to establish, by ordinance or in wastewater discharge permits, more stringent standards or requirements on discharges to the POTW.
6. Dilution. 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 Township manager 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.
(Ord. 339, 7/3/1996, § 4)