(A) No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(1) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;
(2) Any waters or wastes containing toxic (as described in § 307(a) of the Clean Water Act, being 33 U.S.C. § 1317(a)) 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;
(3) Any waters or wastes having a pH lower than 5.5, or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works or interfere with any treatment process;
(4) Solid or viscous substances in quantities or of a size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, 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 the like, either whole or ground up by garbage grinders;
(5) Any water or wastes containing phenols or other taste 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 agency or jurisdiction of the discharge to the receiving waters;
(6) 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;
(7) Any waters or wastes having pH in excess of 9.5;
(8) Materials which exert or cause:
(a) Unusual concentrations of inert suspended solids (such as, but not limited to, Fullers earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate);
(b) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions);
(c) Unusual BOD, chemical oxygen demand or chlorine requirements in quantities as to constitute a significant load on the sewage treatment works; or
(d) Unusual volume of flow or concentration of wastes constituting “slugs” as defined herein.
(9) Waters or wastes containing substances which are not amendable to treatment or reduction by the sewage treatment processes employed, or are amendable to treatment only to a degree that the sewage treatment effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(B) (1) If any waters or wastes are discharged, or are proposed to be discharged, to the public sewers, which waters contain the substances or possess the characteristics enumerated in division (A) above, and which in judgment of the Superintendent may have a deleterious effect upon the sewage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Superintendent may:
(a) Require new industries (or other large users) or industries (or other large users) with significant increases in discharges to submit information on wastewater quantities and characteristics and obtain prior approval for discharges;
(b) Reject the wastes in whole or in part for any reason deemed appropriate by the town;
(c) Require pretreatment of the wastes to within the limits of normal sewage as defined;
(d) Require control of flow equalization of the wastes so as to avoid any “slug” loads or excessive loads that may be harmful to the treatment works; or
(e) Require payment of a surcharge on any excessive flows or loadings discharge to the treatment works to cover the additional costs of having capacity for and treating the wastes.
(2) If the Superintendent permits the pretreatment or equalization of waste flows, the design and installation of the plant and equipment shall be subject to the review and approval of the Superintendent and subject to the requirements of all applicable codes, ordinances and laws.
(C) Where preliminary treatment or flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his or her expense.
(D) When required by the Superintendent, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole together with necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastes. The manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with plans approved by the Superintendent. The manhole shall be installed by the owner at his or her expense, and shall be maintained so as to be safe and accessible at all times. Agents of the town, the state water pollution control agencies and the U.S. Environmental Protection Agency shall be permitted to enter all properties for the purpose of inspection, observation, measurement, sampling and testing.
(E) All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in this subchapter shall be determined in accordance with the latest edition of Standard Methods for the Examination of Water and Wastewater, published by the American Public Health Association, and shall be determined at the control manhole provided, or upon suitable samples taken at the control manhole, except for applications for NPDES permits and report thereof which shall be conducted in accordance with rules and regulations adopted by the U.S. EPA (40 C.F.R. part 136).
(1) In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to a point at which the building sewer is connected.
(2) Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property.
(3) The particular analyses involved will determine whether a 24-hour composite of all outfalls of a premise is appropriate or whether a grab sample or samples should be taken.
(4) Normally, but not always, BOD and suspended solids analyses are obtained from 24-hour composites of all outfalls whereas pH’s are determined from periodic grab samples.
(F) No statement contained in this section shall be construed as preventing any special agreement or arrangement between the town and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the town for treatment, subject to payment therefor, by the industrial concern, at rates as are compatible with the rate ordinance.
(Ord. 040699SU, passed 4-6-1999)