§ 236-33. General prohibitions.

A. 

No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with the operation of or performance of the POTW. These general prohibitions apply to all such users of POTW whether or not the user is subject to National Categorical Pretreatment Standards or Requirements. A user may not contribute the following substances to any POTW:

(1) 

Any liquids, solids or gases 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. 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. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides and any other substances which the District, the commonwealth or EPA has notified the user is a fire hazard or a hazard to the system.

(2) 

Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities such as, but not limited to: grease, garbage with particles greater than 1/2 inch 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, wastepaper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud or glass grinding or polishing wastes.

(3) 

Any wastewater having a pH less than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the Town. Any wastewater having a pH in excess of 9.5.

(4) 

Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the POTW or to exceed the limitation set forth in a Categorical Pretreatment Standard. A toxic pollutant shall include but not be limited to any pollutant identified pursuant to Section 307(a) of the Act.

(5) 

Any noxious or malodorous liquids, gases or solids 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.

(6) 

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 into the POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act or state criteria applicable to the sludge management method being used.

(7) 

Any substance which will cause the POTW to violate either its NPDES or state disposal system permit or the receiving water quality standards.

(8) 

Any wastewater with objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions.

(9) 

Any wastewater having a temperature which will inhibit biological activity in the POTW treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW treatment plant which exceed 40° C. (104° F.) or into a POTW sewer with a temperature at the introduction thereto which exceeds 150° F. (65° C.).

(10) 

Any pollutants, including oxygen demanding pollutants released at a flow rate or pollutant concentration which a user knows or has reason to know will cause interference to the POTW. In no case shall a slug load have a flow rate or contain concentration or qualities of pollutants that exceed for any time period longer than 15 minutes more than five times the average twenty-four-hour concentration, quantities or flow during normal operation.

(11) 

Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.

(12) 

Any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water or uncontaminated industrial process waters.

(13) 

Any wastewater which causes a hazard to human life or creates a public nuisance.

B. 

When the Superintendent determines that a user(s) is contributing to the POTW any of the above enumerated substances in such amounts as to interfere with the operation of the POTW, the Superintendent shall: advise the user(s) of the impact of the contribution on the POTW and develop effluent limitations(s) for such user to correct the interference with the POTW.