(A) Discharge of stormwater and other unpolluted waters.
(1) No person shall discharge or cause to be discharged any stormwater, surface water, ground water, roof runoff, sub-surface drainage, cooling water, or unpolluted industrial process waters to any sanitary sewer.
(2) Stormwater and all unpolluted drainage shall be discharged to sewers specifically designated as storm sewers, or to a natural outlet approved by the Superintendent or authorized representative.
(B) Discharge of wastewater or polluted waters. No person shall place, deposit, or permit to be deposited in any unsanitary manner on public or private property within the jurisdiction of the town/system, any wastewater or other polluted waters except where suitable treatment has been provided in accordance with provisions of this chapter and the NPDES permit.
(C) Prohibited discharges to the public sewers. Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(1) Any liquid or vapor having a temperature higher than 150°F;
(2) Any water or waste which may contain more than 100 parts per million (ppm) by weight, of fat, oil, grease;
(3) Any water or waste which may contain more than 25 parts per million (ppm) by weight, of soluble oils;
(4) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
(5) Any garbage that has not been properly shredded;
(6) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works;
(7) Any waters or wastes having a ph lower than six and higher than nine, or having any corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works;
(8) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create any hazard in the receiving waters of the sewage treatment plant;
(9) Any waters or wastes containing suspended solids of a character and quantity that unusual attention or expense is required to handle the materials at the sewage treatment plant; and
(10) Any noxious gas or substance capable of creating a public nuisance.
(D) Grease, oil, and sand interceptors.
(1) Grease, oil, and sand interceptors shall be provided when, in the opinion of the Superintendent or authorized representative, they are necessary for the proper handling of liquid wastes containing excessive amounts of grease, or any flammable wastes, sand, and other harmful ingredients; except that the interceptors shall not be required for private living quarters or dwellings. All interceptors shall be of a type and capacity approved by the Superintendent or authorized representative, located as to be readily and easily accessible for cleaning and inspection.
(2) Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight, gas tight, and equipped with easily removed covers.
(3) Where installed, all grease, oil, and sand interceptors shall be maintained by the customer, at the customer’s expense, in continuously efficient operation at all times.
(E) Control manholes.
(1) When required by the Superintendent, the owner of any property served by a building sewer carrying wastes shall install a suitable control manhole in the building sewer to facilitate observation, sampling, tests, analysis, and measurement of waste and flow.
(2) This manhole, when required, shall be accessible and safely located, and shall be constructed in accordance with plans approved by the Superintendent or authorized representative.
(3) The manhole shall be installed by the owner, at the expense of the owner, and shall be maintained by the customer so as to be safe and accessible at all times.
(F) Preliminary treatment facilities.
(1) The admission into the public sewers of any waters or wastes shall be subject to the review and approval of the Superintendent or authorized representative. The limits on the strength and character of these waters and wastes are, but may not be limited to:
(a) Having a five-day biochemical oxygen demand greater then 250 parts per million;
(b) Containing more than 300 parts per million by weight of suspended solids;
(c) Containing any quantity of substance having the characteristics described in prohibited discharges to public sewers; and
(d) Having an average daily flow greater than 5% of the daily sewage flow of the town/system.
(2) The customer shall provide at the customer’s expense the preliminary treatment as may be necessary to:
(a) Reduce the biochemical oxygen demand to 250 parts per million and the suspended solids to 300 parts per million by weight;
(b) Reduce objectionable characteristics or constituents to within the maximum limits provided for in prohibited discharges to public sewers;
(c) Control the quantities and rates of discharge of waters or wastes;
(d) Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the Superintendent or authorized representative and IDEM. No construction of the facilities shall commence until approval is obtained in writing; or
(e) Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in a satisfactory and effective operation, by the customer at the customer’s expense.
(G) Measurements, tests, and analysis. All measurements, tests, and analysis of the characteristics of waters and wastes to which reference is made in prohibited discharges to public sewers and preliminary treatment facilities shall be determined in accordance with 40 C.F.R. Part 136 and Standard Methods for the Examination of Water and Wastewater and shall be determined at the control manhole or upon suitable samples.
(H) Pretreatment; equalization of waste flows. If any waters or wastes are discharged, or are proposed to be discharged, to the public sewer, which waters contain the substances or possess the characteristics enumerated in prohibited discharges to public sewers, and which in the 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:
(1) Require new industries or industries with significant increase in discharges to submit information on wastewater characteristics and obtain prior approval for discharges;
(2) Reject the wastes in whole or in part for any reason deemed appropriate;
(3) Require pretreatment of the wastes to within the limits of normal sewage;
(4) Require control or flow equalization of the wastes so as to avoid any “slug” loads or excessive loads that may be harmful to the treatment works; and/or
(5) Require payment of a surcharge on any excessive flows or loadings discharged to the treatment works to cover the additional costs of having capacity for and treating such wastes.
(I) Special agreements. No statement contained in this subchapter shall be construed as preventing any special agreement or arrangement between the town/system and customer whereby a waste of unusual strength or character may be accepted by the town/system for treatment, subject to payment at rates that are compatible.
(Ord. 2002-19, passed 2-24-2002) Penalty, see § 52.99