(A) No user shall contribute or cause to be contributed into the POTW, directly or indirectly, any pollutant or wastewater which causes interference or pass through. These general prohibitions apply to all users of a POTW whether or not the user is a significant industrial user or subject to any national, state or local pretreatment standards or requirements.
(B) No user shall contribute or cause to be contributed 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, waste streams with a closed cup flashpoint of less than 140°F (60°C) using the test methods specified in 40 C.F.R. § 261.21;
(2) Solid or viscous substances in amounts which will cause obstruction of the flow in the POTW resulting in interference, but in no case solids greater than one-half inch in any dimension;
(3) Petroleum oil, non-biodegradable cutting oil or products of mineral oil origin, in amounts that will cause interference or pass through;
(4) Any wastewater having a pH less than 5.0 or more than 12.5, or wastewater having any other corrosive property capable of causing damage to the POTW or equipment;
(5) Any wastewater containing pollutants, including oxygen-demanding pollutants (BOD and the like) in sufficient quantity (flow or concentration) either singly or by interaction with other pollutants, to cause interference with the POTW;
(6) Any wastewater having a temperature greater than 150°F (66°C), or which will inhibit biological activity in the POTW treatment plant resulting in interference, but in no case wastewater which infuses the temperature at the introduction into the treatment plant to exceed 104°F (40°C);
(7) Any 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) Any trucked or hauled pollutants, except at discharge points designated by the POTW Director in accordance with § 50.094 of this code;
(9) Any noxious or malodorous liquids, gases or solids or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for maintenance and repair;
(10) Any substance which may cause the POTW’s effluent or any other product of the POTW, such as residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the POTW cause the POTW to be in noncompliance with sludge use or disposal regulations or permits issued under § 405 of the Act (33 U.S.C. § 1345), the Solid Waste Disposal Act (42 U.S.C. §§ 6901 et seq.), the Clean Air Act (42 U.S.C. §§ 7401 et seq.), the Toxic Substances Control Act (15 U.S.C. §§ 2601 et seq.) or state criteria applicable to the sludge management method being used;
(11) Any wastewater which imparts color which cannot be removed by the treatment process, including, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts sufficient color to the treatment plant’s effluent to render the waters injurious to public health or secondary recreation or to aquatic life and wildlife or to adversely affect the palatability of fish or aesthetic quality or impair the receiving waters for any designated uses;
(12) Any wastewater containing any radioactive wastes or isotopes, except as specifically approved by the POTW Director in compliance with applicable state or federal regulations;
(13) Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, de-ionized water, non-contact cooling water and unpolluted industrial wastewater, unless specifically authorized by the POTW Director;
(14) Fats, oils or greases of animal or vegetable origin in concentrations greater than 50 mg/l;
(15) Any sludges, screenings or other residues from the pretreatment of industrial wastes;
(16) Any medical wastes, except as specifically authorized by the POTW Director in a wastewater discharge permit;
(17) Any material containing ammonia, ammonia salts or other chelating agents which will produce metallic complexes that interfere with the municipal wastewater system;
(18) Any material that would be identified as hazardous waste according to 40 C.F.R. part 261 if not disposed of in a sewer;
(19) Any wastewater causing the treatment plant effluent to violate state water quality standards for toxic substances as described in 15A NCAC 02B .0200;
(20) Wastewater causing, alone or in conjunction with other sources, the treatment plant’s effluent to fail a toxicity test;
(21) Recognizable portions of the human or animal anatomy;
(22) Any wastes containing detergents, surface active agents or other substances which may cause excessive foaming in the municipal wastewater system;
(23) At no time shall two 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 5%, nor any single reading over 10%, of the lower explosive limit (LEL) of the meter;
(24) Any substance discharged in a quantity that would cause any portion of the POTW to be hydraulically overloaded;
(25) (a) Waste from garbage shredders and grinders shall not be acceptable for discharge into a town sewer, except:
1. Wastes generated in preparation of food normally consumed on the premises; or
2. Where the user has obtained a permit for that specific use from the town and agrees to undertake whatever self-monitoring is required to enable the town to determine the waste constituents and characteristics and applicable fees and charges.
(b) These grinders must shred the waste to a degree so that all particles will be carried freely under normal flow conditions prevailing in the town sewer. Garbage grinders shall not be used for grinding plastic, paper products, inert materials or garden refuse.
(26) No person shall discharge any substances directly into a manhole or other opening in a town sewer other than through an approved building sewer, unless he or she has been issued a permit by the town. If a permit is issued for such a direct discharge, the user shall pay the applicable charges and fees and shall meet other conditions necessary to properly treat this discharge as required by the town; and
(27) (a) No person shall discharge any holding tank waste, including by definition but not limited to pumpings from septic tanks, into a town sewer, unless he or she has been issued a permit by the town. Unless otherwise allowed by the town under the terms and conditions of the permit, a separate permit must be secured for each separate discharge. The permit will state the specific location of the discharge, the time of day the discharge is to occur, the volume of the discharge and the wastewater constituents and characteristics. If a permit is granted for discharge of this type of waste into a town sewer, the user shall pay the applicable charges and fees and shall meet other conditions necessary to properly treat this discharge as required by the town. An exception to this division (B)(27)(a) is that no permit will be required for discharge of domestic wastes from recreational motor home holding tanks, provided that those discharges are made into a town approved facility designed to receive those wastes.
(b) Monitoring facilities for holding type wastes such as those described in the preceding division shall be provided by the user when in the exclusive judgment of the town they are deemed reasonably necessary for monitoring purposes.
(C) Pollutants, substances, wastewater or other wastes prohibited by this subchapter shall not be processed or stored in such a manner that they could be discharged to the municipal wastewater system. All floor drains located in process or materials storage areas must discharge to the industrial user’s pretreatment facility before connecting with the system.
(D) When the POTW Director determines that a user is contributing to the POTW any of the enumerated substances in division (B)(27) above in amounts which may cause or contribute to interference of POTW operation or pass through, the POTW Director shall:
(1) Advise the user of the potential impact of the contribution on the POTW in accordance with § 50.125 of this code; and
(Prior Code, § 50.071) (Ord. O-00-001, passed 2-24-2000) Penalty, see § 50.999