(A) No person shall discharge or cause to be discharged any stormwater, surface water, ground water, roof run-off or substance drainage into any sanitary sewer. Swimming pool drainage shall be allowed provided the State Department of Environmental Protection swimming pool water discharge guidelines are followed, including dechlorination and neutralization of water prior to discharge to an on-site sanitary sewer cleanout. The addition of cooling water or unpolluted water or an increase in the use of process water for the purpose of reducing the concentrations of substances that are limited or prohibited by this subchapter or federal pretreatment standard or requirement shall be prohibited. 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 general 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.
(B) Except as hereinafter provided, no person shall discharge or cause to be discharged at any time any of the following described wastes or waters into any sanitary sewer or drain connected therewith. Pollutants, substances or wastewaters prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW:
(1) Any liquid or vapor having temperature which shall inhibit biological activity in the treatment plant resulting in an inhibition or disruption of the treatment plant process, but in no case wastewater with a temperature upon reaching the treatment plant which exceeds 40°C (104°F) or upon reaching the public sewer of 49°C (120°F);
(2) Any water or waste containing more than 100 mg/l by weight of total hexane-extractible materials, commonly referred to as oil and grease, as per EPA method 1664;
(3) Any garbage that is not ground garbage;
(4) Any ashes, cinders, sand, mud, straw, hay scraps, rags, shavings, metal, glass, bones, feathers, rubber, tires, plastic, wood, paunch manure, butchers’ offal, grease or solid fat, floating oil or any other solids or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works;
(5) Any water or waste having at any time a pH lower than 5.5 or higher than 11.0 or having any corrosive property capable of causing damage or hazards to structures, equipment or personnel or the sewage works or affecting the biological treatment of the waste;
(6) Any discharge containing any substances in excess of the following concentrations, provided that the general manager may waive this requirement on a case-by-case basis to impose an equivalent mass discharge limit when an industrial user implements water conservation measures:
Substances | Daily Discharge Limit (mg/l) |
Substances | Daily Discharge Limit (mg/l) |
Arsenic, total | 0.2 |
Cadmium, total | 0.16 |
Chromium, total | 0.9 |
Copper, total | 1.3 |
Cyanide, total | 0.6 |
Lead, total | 0.34 |
Mercury, total | 0.05 |
Molybdenum, total | 3.0 |
Nickel, total | 1.5 |
Selenium, total | 0.5 |
Silver, total | 1.3 |
Zinc, total | 3.7 |
(7) Any water or waste containing pollutants of such character and quantity that unusual attention or expense is required to handle such materials at the wastewater treatment plant, unless a permit is obtained in accordance with § 51.23;
(8) Any water or waste containing any pollutant, including oxygen demanding pollutants (BOD and the like), released at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, causes interference or pass through;
(9) Any toxic radioactive isotopes, without special permit. Biomedical waste disposal in accordance with 10 C.F.R. Part 20 “Standards for Protection Against Radiation” is permitted;
(10) Any substance which may form a deposit tending to cause a stoppage or injure, in any way, the sewage works;
(11) Any tar or by-products from any gas works or similar establishment;
(12) Any infectious waste, which is defined as any substance which consists of or is contaminated by pathogens or other etiologic agents, and which has not been sterilized, neutralized or otherwise rendered harmless. Infectious waste includes, but is not limited to: contaminated blood, blood products or other bodily fluids (excepting excreta discharged by normal bodily functions); wastes, including excreta, from patient isolation areas; laboratory samples or test materials; animal wastes and bedding; body parts; pathology and autopsy wastes; and glassware, hypodermic needles, surgical instruments and other sharps;
(13) Any water or waste by any person having any average daily discharge to the sewage works of more than 5,000 gallons per day with a daily average concentration of more than 3,000 mg/l of BOD;
(14) Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to, wastestreams with a closed cup flashpoint of less than 140°F or 60°C using the test methods specified in 40 C.F.R. § 261.21;
(15) Petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through;
(16) 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;
(17) Any trucked or hauled pollutants, except at discharge points designated in writing by the general manager of the POTW;
(18) 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 prevent entry into the sewers for maintenance or repair;
(19) Wastewater that imparts color that cannot be removed by the POTW treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the treatment plant’s effluent;
(20) Sludges, screenings or other residues from the pretreatment of industrial wastes; and
(21) Detergents, surface-active agents or other substances that might cause excessive foaming in the POTW or its effluent.
(C) The federal pretreatment regulations do not allow a waiver of pretreatment standards, or local limits, for categorical industrial users. The borough hereby incorporates by reference all federal categorical pretreatment standards at 40 C.F.R. Chapter I, Subchapter N, as if they were fully set forth herein, and such standards shall be the standards applied under this subchapter to the appropriate classes of industrial user.
(1) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the general manager may impose equivalent concentration or mass limits as allowed by federal pretreatment regulation.
(2) When the limits in a categorical pretreatment standard are expressed only in terms of mass of pollutant per unit of production, the general manager may convert the limits to equivalent limitations expressed either as a mass of pollutant discharged per day or effluent concentration for purposes of calculating effluent limitations applicable to individual industrial users.
(3) When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the general manager shall impose an alternate limit in accordance with 40 C.F.R. § 403.6(e).
(4) A categorical industrial user may obtain a net/gross adjustment to a categorical pretreatment standard in accordance with the requirements of 40 C.F.R. § 403.15.
(5) When a categorical pretreatment standard is expressed only in terms of pollutant concentrations, an industrial user may request that the general manager convert the limits to equivalent mass limits. The determination to convert concentration limits to mass limits is within the discretion of the general manager. The general manager may establish equivalent mass limits only if the industrial user meets all of the requirements of 40 C.F.R. § 403.6(c)(5)(i)(A) through 40 C.F.R. § 403.6(c)(5)(i)(E).
(6) The general manager may, at his or her discretion, convert the mass limits of the categorical pretreatment standards of 40 C.F.R. Parts 414, 419 and 455, and other parts as EPA may amend from time to time, to concentration limits for the purposes of calculating limitations applicable to individual industrial users. The industrial user shall meet the requirements of 40 C.F.R. § 403.6(d) regarding dilution and 40 C.F.R. § 403.17 regarding bypass, and, for those industrial users that mix process effluent prior to treatment with wastewater other than those generated by the regulated process, shall provide information regarding the pollutant concentrations and wastestream flows at the sample point.
(7) Once included in its permit, the industrial user must comply with the equivalent limitations developed in this section in lieu of the promulgated categorical standards from which the equivalent limitations were derived.
(8) 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 limitations.
(9) Any industrial user operating under a permit incorporating equivalent mass or concentration limits calculated from a production-based standard shall notify the general manager 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 general manager 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.
(10) The general manager may impose mass limitations in addition to concentration limitations. The general manager may approve accepting discharges from a permitted industrial user that are of unusual strength or character based on water conservation or other resource conservation measures employed by the industrial user. Mass limitations may be determined where allowed by federal and local regulations, such as converting concentrations to mass, allocating maximum allowable headworks loadings or any other method deemed appropriate.
(D) The general manager may develop best management practices (BMPs) in individual wastewater discharge permits to implement local limits, the requirements of division (B) above and 40 C.F.R. § 403.5(a)(1) and (b), and certain established categorical pretreatment standards and effluent limits.
(2006 Code, § 18-203) (Ord. 2010-1, passed 12- -2010; Ord. 2012-2, passed 3-10-2013) Penalty, see § 51.99