(a) Normal Concentrations of Wastes. User Charges pursuant to Sanitary Sewer charges shall apply to wastes not exceeding normal concentrations as follows:
(1) BOD - 240 milligrams per liter;
(2) Suspended Solids - 240 milligrams per liter;
Applicable concentrations shall be based on average concentrations, weighted in proportion to volume of flow, determined during each billing period by the most practicable method possible. Should the average concentration of any constituent exceed the normal concentration provided in this Section, a User Charge Surcharge for constituent(s) exceeded shall apply for the applicable billing period, in accordance with the sanitary sewer charges.
(b) Authority for Control of Wastewater Discharges. If any wastes are discharged, or are proposed to be discharged, to the wastewater treatment works which contain pollutants in excess of normal concentrations as defined above and/or possess characteristics which, in the judgment of the Board, may have a deleterious effect upon the wastewater treatment works or receiving waters, including violation of applicable NPDES permit, of which otherwise creates a hazard to life or constitute a public nuisance, the Board shall:
(1) Reject the wastes; or
(2) Require pretreatment to an acceptable condition for discharge to the wastewater treatment works; and/or
(3) Require control over the quantities and rates of discharge; and/or
(4) Require payment of surcharges as provided previously to cover the added cost of handling and treating the wastes.
Roof drains, foundation drains and all other clear water connections to the sanitary sewer are prohibited.
(c) Industrial Wastes.
(1) All industrial wastes discharged to the public sewers by major contributing industries shall, as a minimum, meet the national pretreatment standards or best practical control technology currently available for incompatible pollutants as published in Title 40 Code of Federal Regulations Part 128 unless the Village is committed, in its NPDES permit, to remove a specified percentage of the incompatible pollutant. In those instances the applicable pretreatment standards may be correspondingly reduced to levels determined by the Board or its duly authorized representative or State regulatory agencies.
(2) If the Board requires pretreatment or equalization of waste flow, the design and installation of the plants and equipment shall be subject to the review and approval of the Board and State regulatory agencies and subject to the requirements of all applicable codes, ordinances and laws.
(d) Submission of Basic Data. Within ninety days after passage of this chapter, each person whose operation entails the discharge of industrial wastes to a public sewer shall prepare and file with the Board of Trustees of Public Affairs, a written statement setting forth the nature of the operation contemplated or presently carried on, the amount and source of water required for use, the proposed point of discharge of such wastes into the wastewater collection system of the Village, the estimated amount to be so discharged and a fair statement setting forth the expected bacterial, physical, chemical and other known characteristics of such wastes. Within a reasonable time of receipt of such statement, the Village shall make an order stating such minimum restrictions as in the judgment of the Board may be necessary to adequately guard against unlawful uses of the Village's wastewater system. When it can be demonstrated that circumstances exist which would create an unreasonable burden on the person to comply with this time schedule, a request for extension of time may be presented for consideration of the Board. All requests for extension of time shall be submitted in writing, stating the reasons for such a request. Under no circumstances shall the extension of time exceed sixty days after approval of the extension by the Board.
(e) Oil and Grease. If oils and grease are biodegradable and in a physical state that does not cause clogging or undue maintenance problems in the wastewater facilities, the discharge of these substances can be accepted in a wastewater treatment system. Animal and vegetable oils and grease, polar substances, are readily degradable in aerobic and anaerobic biological treatment systems provided that the physical states of the oils and grease do not prevent the necessary contact with the biological suspensions responsible for treatment. However, oils and grease of mineral origin, primarily nonpolar substances, are essentially non-biodegradable either in aerobic or anaerobic processes and should be removed from industrial wastes to the maximum degree practical before discharge. The discharge of these oils and greases of mineral origin shall be limited to the regulation of the Village. Grease separators are required for all meat packing plants and on building sewers serving hotels, restaurants and institutions in which large numbers of meals are served. However, the use of garbage grinders precludes the use of gravity grease separators. Flammable waste and grit intercepting facilities must be provided on all building sewers from garages, filling stations, cleaning establishments and other concerns using volatile oils or solvents. Special pretreatment methods are required for the removal of soluble cutting oils. All grease and oil removal facilities must be approved by the Board.
(f) Wastewater Volume Determination. The quantity subject to the charges imposed by this chapter shall be the volume of wastes discharged to the wastewater treatment works by the user. This volume shall be the same volume as that recorded on the meter or meters used to measure water from the public water systems, unless the user is supplied with water from a source other than the public water system and/or unless a substantial volume of water supplied to the user is not discharged to the wastewater treatment works; in which cases, the volume of water discharged to the wastewater treatment works shall be determined by one or more meters installed to measure water flow and/or wastewater discharged, or by other means approved by the Village. Pursuant to the provisions of Industrial Cost Recovery, industrial wastes, as distinct from domestic wastes, from an industry shall be determined in a similar manner. Meters installed other than the meter or meters used to record consumption from the public water system shall be approved by the Village and installed at the expense of the user. Following approval, such meter(s) shall not be removed without the consent of the Village. Wherever more than one family unit or more than one business, professional or commercial establishment or a combination of one or more family units, business, professional or commercial establishments are supplied by one water meter, then the sanitary sewer charge shall be applied to each family, business, professional or commercial establishment in the same manner as though a separate water service and meter supplied each family or each business, professional or commercial establishment. This section shall include, but shall not be limited to, mobile homes.
(g) Sampling and Monitoring.
(1) Industrial wastes discharged to the wastewater treatment works shall be subject to periodic inspection with a determination of character and concentration of the wastes. The determination shall be made as often as may be deemed necessary by the Village. The user shall be responsible for the collection and testing of the aforementioned samples.
(2) Samples shall be collected in such a manner as to be representative of the composition of the wastes. The sampling shall preferably be accomplished by the use of automatic sampling equipment capable of collecting composite samples. Every care shall be exercised in the collection of samples to insure their preservation in a state comparable to that at the time the sample was taken.
(h) Control Manhole. When required by the Board, a user shall install one or more suitable structures, together with such necessary meters and other appurtenances, in the building sewer(s) to facilitate observation, sampling and measurement of the wastes. Such structure(s), when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the Board. The structure(s) and appurtenances shall be installed by the user at its expense and shall be maintained by the user so as to be safe and accessible at all times.
(i) Testing.
(1) All measurements, tests and analyses of the characteristics of wastes to which reference is made in this chapter 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, unless such standards conflict with regulations promulgated by the U.S. Environmental Protection Agency under 40 CFR 136 - “Guidelines Establishing Test Procedures for the Analysis of Pollutants”, in which case, the regulations promulgated by the Environmental Protection Agency shall govern. Sampling methods, location, times, duration and frequencies shall be determined on an individual basis subject to approval by the Board or its duly authorized representative.
(2) All costs incident to sampling and analysis shall be borne by the user. Such costs incurred by the Village on behalf of the user shall be billed annually to the user, based on the actual cost to the Village, plus reasonable overhead. Such billing shall be billed with, and be considered a part of, the sewer service charge for the month billed.
(j) Discharge of Wastes to Storm Sewers. Wastes shall not be discharged into a storm sewer unless the waste is of such character as would permit the waste to be discharged directly to the body of water to which the storm sewer discharges and be in compliance with all criteria and standards of discharge established by regulatory agencies.
(Ord. 6-80. Passed 5-19-80; Ord. 8-05. Passed 8-15-05.)