931.05 USE OF PUBLIC SEWERS RESTRICTED.

   (a)   The Discharge of Nonsanitary Wastewaters in Public Sewers Prohibited. No person shall discharge or cause to be discharged any storm water, ground water, roof run-off, subsurface drainage, cooling water or unpolluted industrial process waters to any sanitary sewers.

   (b)   Discharge of Unpolluted Water to Storm Sewers and/or Natural Outlet Permitted. Storm water run-off shall be discharged to such sewers as are specifically designated storm sewers or to a natural outlet as approved by the Engineer.

   Treated industrial cooling water or unpolluted process waters may be discharged, upon approval of the Engineer, and in conformance with Federal Regulations to a storm sewer or a natural outlet.
(Ord. 99-7. Passed 1-6-99.)

   (c)   Flows and Loads Discharge Limitations to Public Sewers. Except as hereinafter provided, no waste shall be discharged or cause to be discharged into any public sewer which will interfere with the operations or performance of the treatment works. Specifically, the following wastes shall not be discharged into the treatment works:

       (1)   Any liquid or vapor having a temperature higher than 150 degrees Fahrenheit.

       (2)   (EDITOR’S NOTE: Former subsection (c)(2) hereof was repealed by Ordinance 99-7, passed January 6, 1999.)

       (3)   Any gasolene, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas which creates a fire or explosion hazard in the treatment works.

       (4)   Any garbage that has not been properly shredded.

       (5)   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 of flow in the public sewers or other interference with the proper operation of the treatment works.

       (6)   Any waters or wastes having a pH of less than 5.5 or more than 9.5, or having any other corrosive property capable of causing damage or hazards to structures, equipment and personnel of the treatment works, unless such works is designed to accommodate such wastes.

       (7)   Any wastes or waters containing a toxic or poisonous substance in sufficient quantity to injure or interfere with the treatment process, which constitute a hazard to humans or animals or create any hazard in the receiving water or in the treatment works, such as radioactive substances, isotopes and similar materials.

       (8)   Any waters or wastes containing suspended solids of such character and quality that unusual attention and/or expense is required to handle such materials at the sewage treatment plant, or having a chlorine demand greater than 50 mg/l.

       (9)   Wastes at a flow rate and/or pollutant discharge rate which is excessive over relatively short time periods so that there is a treatment process upset and subsequent loss of treatment efficiency. Unless otherwise defined by the Engineer, such wastes rates are defined as a slug.

         (Ord. 99-362. Passed 9-15-99.)

      (10)   Wastes which are specifically limited and/or prohibited by the NPDES permit.

      (11)   Wastes which are prohibited by 40 CFR 128.

      (12)   Any noxious or malodorous gas or substance capable of creating a public nuisance, or substance causing the release of noxious or poisonous gases after discharge into the public sewer system.
(Ord. 05-285. Passed 11-16-05.)

      (13)   Unless otherwise amended, added and/or deleted from as provided hereinafter, the following shall be considered as being the limits of concentration not to be exceeded by any user unless otherwise permitted by the Engineer as provided for herein.

PARAMETER	CONCENTRATIONS (daily maximum)
pH	5.5-9.5 S.U.
Temperature	104 degrees Fahrenheit (40 degrees C)
BOD	210 mg/l
Suspended Solids	240 mg/l
Oil and Grease	50 mg/l
Arsenic	0.0047 mg/l
Cadmium	0.0012 mg/l
Chromium, Total	0.0085 mg/l
Chromium, Hexavalent	0.0085 mg/l
Copper	0.0512 mg/l
Cyanide	0.0104 mg/l
Lead	0.0181 mg/l
Mercury	<0.0002 mg/l
Molybdenum	0.0030 mg/l
Nickel	0.0295 mg/l
Nitrogen, Total	25 mg/l
Nitrogen, Ammonia	16.5 mg/l
Phenols	160 mg/l
Phosphates, Total	10 mg/l
Silver	0.0044 mg/l
Zinc	0.0844 mg/l

   (Ord. 06-37. Passed 2-15-06.)

      (14)   Any pollutant subject to the National Categorical Pretreatment Standards as promulgated by the Federal Agency pursuant to the Act.

   The above list is not intended to be a complete list of forbidden toxic materials. Additional restrictions may also be placed on other compounds when it is shown that the concentration of these materials at a treatment plant is sufficient to adversely affect any portion of the treatment process. The average concentration of toxic substances into the sewage system from any one establishment shall be the magnitude of the above stated concentrations with peak concentrations not greater than twice the amount, unless otherwise stated. However, where low downstream dilution might be expected, the requirements may be modified at the discretion of the Engineer.
(Ord. 05-285. Passed 11-16-05.)

   (d)   Grease, Oil and Grit Removal Required. Where directed by the Engineer, the owner shall construct and maintain at his expense, grease and oil and sand interceptors. Such interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, water-tight and equipped with easily removable covers which when bolted in place shall be gas-tight and water-tight. Such interceptors shall not be required for private living quarters or dwelling units. Intercepted material shall be returned to the industrial process, be sent to the public refuse dump, or disposed of in another approved manner.

   (e)   Treatment of Industrial Wastes. The admission into the public sewers of any waters, wastes, compatible and/or incompatible pollutants having a five day Biochemical Oxygen Demand greater than 210 mg/l; or containing more than 240 mg/l of suspended solids; or containing any quantity of substance having the characteristics described in subsection (c) hereof; or an average daily flow greater than two percent (2%) of the average daily sewage flow of the system, shall be subject to the review and approval of the Engineer.

   The Engineer has the right to reject any and all wastes which in his opinion may be harmful to or exceed capacities of the sewage collection system and/or the sewage treatment plant.

   Where necessary, based upon Federal guidelines for the pretreatment of pollutants and in the opinion of the Engineer, the owner shall provide at his own expense, such pretreatment as may be necessary to reduce the Biochemical Oxygen Demand to 210 mg/l or less and the suspended solids to 240 mg/l or less; or reduce objectionable characteristics or constituents to within the maximum limits provided for in subsection (c) hereof; or control the quantities and rates of discharge of such waters or wastes.

   Plans, specifications and/or other pertinent information relating to proposed pretreatment facilities shall be submitted for the approval of the Engineer, the Boards of Health and the Ohio EPA and no construction of such facilities shall be commenced until such approvals are obtained in writing and an NPDES permit has been issued to operate and maintain such facilities. All costs relating to such plans, specifications, construction, rights of way, etc., shall be borne by the owner.

   When determined by the Engineer that a discharge of industrial wastes with concentrations exceeding the normal strength limitations can be satisfactorily treated without adverse effects to the collection and/or treatment systems, such wastes may be discharged subject to limitations determined by the Engineer.

   The discharge of such wastes exceeding normal strength shall be subject to and require a surcharge to compensate the Agency for all costs associated with the collection, conveyance, treatment and final disposal for all excess concentrations as hereinafter provided in Section 935.17.

   (f)   Joint Treatment Required. All major contributing industries shall be required to enter into a contractual arrangement with the Agency to provide for joint treatment. Such contractual arrangements and joint treatment shall comply with the provisions of subsection (e) hereof.

   (g)   Industrial Flows and Loads Measuring and Control Devices Required. Where required by the Engineer, the owner of any property served by a building sewer carrying industrial wastes shall install a suitable control manhole in the building sewer to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with plans and specifications satisfactory to the Engineer or approved by him. The manhole shall be installed by the owner at his own expense, and shall be maintained by him so as to be safe and accessible at all times and shall be subject to inspection at any time.

   The Engineer may require, if he deems necessary, shut-off valves on all industrial connections to the sewer system. The furnishing and installing of such shut-off valves to be at the expense of the industry making the connection. The valve will be controlled only by the Engineer or his authorized personnel.

   The Engineer may require, if he deems necessary, a nonclog type of measuring and transmission device or other approved measuring and transmission device to be installed on all industrial discharge lines connected to the sewer system. The installation, maintenance and telemetering of this equipment shall be approved by the Engineer and all costs and expense therefor shall be borne by the industry discharging the industrial wastes.

   (h)   Standard Methods for the Examination of Water and Sewage. All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in subsection (c) and (e) hereof, shall be determined in accordance with the Environmental Protection Agency Test Procedures for Analysis of Pollutants (Ref. FR 10-16-73, Vol. 38, No. 199, Part 11) and the "Standard Methods for the Examination of Water and Sewage" and shall be determined at the control manhole provided for in subsection (g) hereof, or upon suitable samples taken at such control manhole. 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 the point at which the building sewer is connected. The costs of such measurements, tests and analysis shall be at the owner's expense.

   (i)   Rights, Restrictions and Violations.

      (1)   The Engineer reserves the right to limit or prohibit any new sewer connection if it will cause the available capacity to be exceeded in any part of the sewage works, including treatment capacity for hydraulic load, BOD and suspended solids.

      (2)   In cases of repeated violations, the Engineer may revoke the permit for the discharge of wastes into the sewer system, and effect the discontinuation of sewer service.

      (3)   Changes in any industrial process, from which the wastes are to be discharged into the sewerage system, shall be brought to the attention of the Engineer before the discharge is made.

      (4)   No statement contained in these regulations shall be construed as preventing any special agreement or arrangement between the Engineer and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the Engineer for treatment subject to payment therefor by the Industrial concern.

   (j)   Discharge of Holding or Septic Tank Wastes into Public Sewer Restricted. No person shall discharge any holding or septic tank waste into a public sewer directly or indirectly unless he has been issued a permit by the Agency. Unless otherwise allowed by the Agency, the terms and conditions of the permit will state the specific location of discharge, the time of day the discharge is to occur, the volume of the discharge and the wastewater constituents and characteristics. If a permit is granted for discharge of such waste into a public sewer, the user shall pay the applicable charges and fees and shall meet such other conditions as required by the Agency. An exception to the above is that no permit will be required for discharge of domestic wastes from mobile home holding tanks provided that such discharges are made into an Agency approved facility designed to receive such wastes.

   (k)   Sampling and Monitoring. Industrial wastes discharged into the public sewers shall be subject to periodic inspection with a determination of character and concentration of such wastes. Industrial waste containing substances listed in subsection (c) hereof shall be sampled and monitored as often as may be deemed necessary by the Engineer. The owner shall be responsible for the collection and testing of the aforementioned samples.

   If the service is provided by the Agency, the person whose wastes are being tested shall promptly reimburse the Agency for the taking of samples and/or testing according to the fee schedule in effect at that time.

   Samples shall be collected in such a manner as to be representative of the composition of the wastes. When required, the sampling shall be accomplished by the use of automatic sampling equipment capable of collecting composite samples.

   Access to sampling locations shall be granted to the Engineer or authorized representative 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.

   Continuous monitoring and recording of discharge flow pH values will be required when in the opinion of the Engineer sufficient quantities of acid or caustic materials which could damage the sewerage system are being used or stored on the premises.
(Ord. 80-554. Passed 6-25-80.)