(A) Industrial discharges. If any waters or wastes are discharged, or proposed to be discharged, to the public sewers, which waters or wastes contain substances or possess the characteristics enumerated in §§ 51.02 through 51.05 and which, in the judgment of the approving authority, may have deleterious effects upon the wastewater treatment works, processes, equipment, or receiving waters, or which otherwise create a hazard to life, health, or constitute a public nuisance, the approving authority may do as follows.
(1) Reject the wastes.
(2) Require pretreatment to an acceptable condition for discharge to the public sewer consistent with 40 CFR 403.
(3) Require control over the quantities and rates of discharge.
(4) Require payment to cover the added costs of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of § 51.04.
(B) Control manholes.
(1) Each person discharging industrial wastes into a public sewer shall construct and maintain one or more control manholes or access points to facilitate observation, measurement, and sampling of his or her wastes, including domestic sewage.
(2) Control manholes or access facilities shall be located and built in a manner acceptable to the approving authority. If measuring devices are to be permanently installed, they shall be of a type acceptable to the approving authority.
(3) Control manholes, access facilities, and related equipment shall be installed by the person discharging the waste, at his or her expense, and shall be maintained by him or her so as to be in safe condition, accessible, and in proper operating condition at all times. Plans for installation of the control manholes or access facilities and related equipment shall be approved by the approving authority prior to the beginning of construction.
(C) Measurement of flow. The volume of flow used for computing the sewer service and cost recovery charges shall be based upon the water consumption of the person as shown in the records of meter readings maintained by the Public Utilities Commission, or as determined by other methods revealing accurate water consumption of the person involved.
(D) Provision for deductions. In the event that a person discharging industrial waste into the public sewers produces evidence satisfactory to the approving authority that more than 10% of the total annual volume of water used for all purposes does not reach the public sewer, then the determination of the water consumption to be used in computing the waste volume discharged into the public sewer may be made a matter of agreement between the approving authority and the person.
(E) Metering of waste. Devices for measuring the volume of waste discharged may be required by the approving authority if this volume cannot otherwise be determined from the metered water consumption records. Metering devices for determining the volume of waste shall be installed, owned, and maintained by the person. Following approval and installation, meters may not be removed without the consent of the approving authority.
(F) Waste sampling.
(1) Industrial wastes discharged into the public sewers shall be subject to periodic inspection and a determination of character and concentration of the wastes. The determinations shall be made by the industry as often as may be deemed necessary by the approving authority.
(2) Samples shall be collected in such a manner as to be representative of the composition of the wastes. The sampling may be accomplished either manually or by the use of mechanical equipment acceptable to the approving authority.
(3) Testing facilities shall be the responsibility of the person discharging the waste and shall be subject to the approval of the approving authority. Access to sampling locations shall be granted to the approving authority or its duly authorized representatives at all times. 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.
(G) Pretreatment. Where required, in the opinion of the approving authority, to modify or eliminate wastes that are harmful to the structures, processes, or operation of the wastewater treatment works, the person shall provide, at his or her expense, such preliminary treatment or processing facilities as may be required to render his or her wastes acceptable for admission to the public sewers.
(H) Grease and/or sand interceptors. Grease, oil, and sand interceptors shall be provided when, in the opinion of the approving authority, they are necessary for the proper handling of liquid wastes, containing floatable grease in excessive amounts, as specified in § 51.03(B), or any flammable wastes, sand or other harmful ingredients. All interceptors shall be of a type and capacity approved by the approving authority, and shall be located so as to be readily and easily accessible for cleaning and inspection. In the maintaining of these interceptors, the owner(s) shall be responsible for the proper removal and disposal by appropriate means of the captured material, and shall maintain records of the dates and means of disposal which are subject to review by the approving authority. Any removal and hauling of the collected materials not performed by the owner’s personnel must be performed by currently licensed waste disposal firms.
(I) Analysis.
(1) All measurements, tests, and analysis of the characteristics of waters and waste 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 Guidelines Establishing Test Procedures for Analysis of Pollutants (1978, 40 CFR 136). Sampling methods, locations, times, durations, and frequencies are to be determined on an individual basis subject to approval by the approving authority.
(2) Determination of the character and concentration of the industrial wastes shall be made by the person discharging them, or his or her agent, as designated and required by the approving authority. The approving authority may also make its own analysis of the wastes, and these determinations shall be used as a basis for charges. If the person discharging the waste contests the determination, the approving authority may elect to have an independent laboratory determine the character and concentration of the waste. The independent laboratory, in making determination, shall be assumed by the discharger.
(J) Submission of information. Plans, specifications, and other pertinent information relating to proposed flow equalization, pretreatment, or processing facilities shall be submitted for review by the approving authority prior to the start of their construction if the effluent from the facilities is to be discharged into the public sewers.
(K) Submission of basic data. Within three months after passage of this subchapter, each person who discharges industrial wastes to a public sewer shall prepare and file with the approving authority a report that shall include pertinent data relating to the quantity and characteristics of the waste discharged to the wastewater works. Similarly, each person desiring to make a new connection to a public sewer for the purpose of discharging wastes shall prepare and file with the approving authority a report that shall include actual or predicted data relating to the quantity and characteristics of the waste to be discharged.
(L) Extension of time. When it can be demonstrated that circumstances exist which would create an unreasonable burden on the person to comply with the time schedule imposed herein, a request for extension of time may be presented for consideration by the approving authority.
(Ord. 170, passed 8-10-1981) Penalty, see § 10.99