(A) General prohibitions. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes, or could potentially cause, pass-through or interference with the operation or performance of the POTW. 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) Any substances or pollutants which, by reason of their nature or quantity, create a fire or explosive hazard to the POTW or the operation of the POTW, including but not limited to, wastestreams with a closed-cup flashpoint of less than 140º F (60º C), using the test methods specified in 40 CFR 261.21. At no time shall two (2) successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system) be more than five percent (5%) nor any single reading be over ten percent (10%) of the lower explosive limit (LEL) of the meter. Examples of these pollutants include, but are not limited to: gasoline, benzene, naphtha, fuel oil, kerosene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides or other flammable or explosive liquid, solid, or gas which the Town or the Control Authority has notified the user is a fire or explosion hazard to the POTW.
(2) Wastewater having a pH less than 5.5 or more than 9.5, or otherwise causing corrosive structural damage to the POTW or equipment; damage or hazards to the personnel of the POTW; or interference with any treatment process.
(3) Solid or viscous substances in an amount which could cause obstruction of the flow in the POTW resulting in interference with the operation of the POTW. Examples of such instances include, but are not limited to: fats, oils, and greases (FOG), ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails, paper, dishes, cups, milk containers, and aluminum cans.
(4) Pollutants, including oxygen-demanding pollutants (BOD, and the like) released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference in the POTW.
(5) Wastewater having a temperature greater than 150º F (65º C), or which will inhibit biological activity in the treatment plant resulting in interference or damage, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed 104º F (40º C).
(6) Petroleum, oil, non-biodegradable 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:
(a) With the written permission of the POTW via an authorized agent;
(b) At discharge points designated by the Superintendent; and
(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 Town's NPDES permit.
(11) Any wastewater containing any radioactive wastes or isotopes of a half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.
(12) Storm water, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted wastewater, unless specifically authorized by the Superintendent.
(13) Sludges, screening, or other residues from the pretreatment of industrial wastes.
(14) Medical wastes, except as specifically authorized by the Superintendent in a wastewater discharge permit.
(15) Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
(16) Any wastes containing detergents, surface-active agents (surfactants), or other substances which may cause excessive foaming in the POTW or receiving stream.
(17) Any water or waste containing animal/vegetable-based oil and grease, whether emulsified or not, in excess of one hundred (100) mg/l. Any exceeding of this surcharge limit may be penalized in accordance with conditions set forth in § 52.31(A)(5). The Town may also recover costs associated with problems in the collection system and/or POTW resulting from the discharge.
(18) Wastewater, alone or in conjunction with other sources, containing molybdenum in amounts that restrict the Town from disposing of the treatment plant's sludge by any of the selected methods of disposal.
(19) Wastewater, alone or in conjunction with other sources, containing mercury in amounts that result in the POTW violating any portion of its NPDES permit.
(20) Any waters or wastes containing phenols or other taste-producing or odor-producing substances, in concentrations exceeding limits which may be established by the Superintendent as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal, or other public agencies of jurisdiction of discharge to the receiving waters.
(21) Unusual 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.
(22) Unusual volume of flow or concentration of wastes constituting "slug" as defined in § 52.01.
(23) Any waters or wastes which may cause any other products of the POTW, such as residues, sludges, or scums, to be unsuitable for reclamation and reuse, or to interfere with the reclamation process.
(24) Any water or wastes containing pollutants that result in the presence of toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant.
(25) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to a degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(26) Food waste disposal, including through in-sink grinders of sink disposal units, except when its use complies with the compatible pollutant limits set forth in this chapter.
(27) 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 the limitations contained in the federal categorical pretreatment regulations or with any other pretreatment standard set by the Control Authority or specified within this chapter.
(C) Pollutants, substances, or wastewater prohibited by this section shall not be processed, diluted, or stored in such a manner that they could be discharged to the POTW.
(Ord. 2004-11, passed 6-10-04; Am. Ord. 2011-06, passed 3-24-11)