It shall be unlawful for any person to discharge or deposit or cause or allow to be discharged or deposited into the wastewater treatment system of the town any wastewater which contains the following without a discharge permit approved by the Superintendent and the Town Manager:
(A) Storm water drainage from ground, surface, roof drains, catch basins, unroofed area drains or any other source. Specifically prohibited is the connection of roof downspouts, exterior foundation drains, areaway drains or other sources of surface runoff or ground water to a building sewer or building drain which in turn is connected directly or indirectly to the town’s wastewater collection system. No person shall connect or discharge water from underground drains, sump pump discharges, natural springs and seeps, water accumulated in excavation or grading or any other water associated with construction activities;
(B) Inert suspended solids or other inert particulate matter such as, but not limited to, fuller’s earth, lime slurries and paint residues, resulting in wastewater with a settleable solids concentration greater than 25 milliliters per liter;
(C) Unusual concentration of dissolved solids, such as, but not limited to, chloride greater than 10,000 mg/l and sulfate greater than 1,000 mg/l. The Superintendent may reject other unusually high concentrations upon determination that they are incompatible pollutants;
(D) Oil and grease of the following concentrations, sources or nature:
(1) Wastewater containing total grease and oil in excess of 100 mg/l concentration as measured by EPA method 413-2 or other method set forth in 40 C.F.R. part 136; and
(2) Wastewater containing more than 25 mg/l petroleum, as measured as hydrocarbons by EPA method 602 or other method set forth in 40 C.F.R. part 136.
(E) Explosive mixtures, consisting of 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 other way to the wastewater treatment system or to the operation of the system. At no time shall two successive readings on an explosion hazard meter at the point of discharge into the wastewater system be more than 5%, nor may any single reading be 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. Specifically prohibited are pollutants which create a fire or explosion hazard in the town’s wastewater treatment works, including, but not limited to, waste streams 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;
(F) Noxious material consisting of noxious or malodorous solids, liquids or gases, which, either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life, or are or may be sufficient to prevent entry into any portion of the wastewater system for its maintenance and repair;
(G) Improperly shredded garbage that has not been ground or comminuted to such a degree that all particles will be carried freely in suspension under flow conditions normally prevailing in the wastewater system to which the user is connected. At all times, no particle shall be greater than one-half inch in any dimension;
(H) Radioactive wastes or isotopes of a half-life or concentration that they do not meet regulations set forth by the state’s Department of Public Health and Environment, in the latest edition of Rules and Regulations Pertaining to Radiological Control;
(I) Solid or viscous wastes, which will or may cause obstruction to the flow in a collection line or otherwise interfere with the proper operation of the wastewater treatment system. Prohibited materials include, but are not limited to: grease, uncomminuted garbage, 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, waste paper, wood, plastic, tar, asphalt residues, residues from refining or processing fuel or lubrication oil and similar substances;
(J) Toxic substances in amounts exceeding standards promulgated by the Administrator of the United States Environmental Protection Agency pursuant to § 307(a) of the Act, and chemical elements of compounds, phenols or other taste- or odor-producing substances, or any other substances which are not susceptible to treatment or which may interfere with the biological processes or efficiency of the treatment system or which will be transmitted through the system to receiving water;
(K) Substances which are not amenable to treatment or prescribed reduction by the treatment process employed by the town, or are amenable to such a limited degree of reduction that a discharge of such wastewater would result in effluent discharge from the treatment works that does not meet requirements of state, federal and other agencies having jurisdiction over discharge or application to receiving waters and/or lands;
(L) Wastes with color not removable by the treatment process;
(M) Corrosive wastes, which will cause corrosion, deterioration or interference with the wastewater treatment system. All wastewater discharged into the wastewater system must have an instantaneous pH value in the range of five and one-half to ten standard units inclusive and must have a temperature not exceeding 150ºF, unless a more strict limitation is provided within a non-domestic pre-treatment permit described in Chapter 54 of this code of ordinances;
(N) Spent process chemicals, solutions or materials, hazardous waste as defined by the Federal Resource Conservation and Recovery Act; and other materials normally used in industrial/commercial operations unless specifically authorized in writing by the Manager and after suitable treatment as approved by the Manager has been affected;
(O) Wastes from hospitals, clinics, offices of medical doctors and dentists, and convalescent homes consisting of, but not limited to, laboratory pathological wastes, surgical operating room wastes or delivery room wastes;
(P) Biocides, as determined by the Superintendent, in concentrations exceeding 0.02 mg/l unless approved in writing by the Superintendent;
(Q) Any trucked or hauled pollutants, except at discharge points designated by the town and for substances approved by the town; and
(R) Petroleum oil, non-biodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through.
(Prior Code, § 137.8.2) (Ord. 171, passed 7-7-1958; Ord. 339, passed - -; Ord. 480, passed 3-6-2003; Ord. 577, passed 11-6-2014) Penalty, see § 53.999