(a) No person shall discharge or cause to be discharged any storm water, surface water, ground wafer, roof runoff, subsurface drainage, cooling water or unpolluted industrial process waters to any sanitary sewer of the Municipality when adequate and separate public storm water and sanitary sewer systems are provided and available.
(b) Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers or to a natural outlet approved by the Superintendent. Industrial cooling water or unpolluted process waters may be discharged upon approval of the Superintendent to a storm sewer or natural outlet when adequate and separate public storm water and sanitary sewer systems are provided.
(c) Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer;
(1) Any liquid or vapor having a temperature higher than 150 degrees Fahrenheit.
(2) Any water or wastes containing free oils, emulsified oils and grease exceeding an average of one hundred parts per million (833 pounds per million gallons) of either soluble matter.
(3) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
(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, hair and fleshings, entrails, lime slurry, lime residues, chemical residues, paint residues, cannery waste, bulk solids or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with proper operation of the wastewater treatment system.
(6) Any waters or wastes having a pH lower than 5.5 or higher than 9.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works.
(7) Any wastes or waters 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 wastewater treatment system, such as cyanides, radioactive substances and similar materials.
(8) Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the wastewater treatment plant, or having a chlorine demand greater than thirty ppm.
(9) Any noxious or malodorous gas or substance capable of creating a public nuisance, or substances causing the release of noxious or poisonous gases after discharge into the public sewer system.
(Ord. 188-6. Passed 1-3-77.)
The limits at the industry's sewer outlet shall be stipulated in individual contracts between the Municipality and the industry at the time the industry requests permission to use the Municipality's sanitary sewer system for the discharge of its industrial waste. Such limits of toxic wastes shall be established by the Director and/or the Superintendent for each industry in a manner to assure that the concentrations will not exceed those stipulated as follows:
Toxic Waste ppm Iron 15.0 Zinc 5.0 Cyanide 1.0 Copper 5.0 Nickel 5.0 Chromium 5.0 Phenols 5.0 Lead 5.0 Cadmium .5 |
(Ord. 188-6. Passed 1-3-77; Ord 157-7. Passed 8-20-84.)
(d) The discharge of industrial wastes into the public sewer system, other than those explicitly permitted in this chapter, is prohibited. In addition to meeting the requirements of this chapter, compliance must be made with all applicable State and Federal regulations including the NPDES permit.
(e) Grease, oil and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of liquid wastes containing grease in harmful amounts, or any flammable wastes, sand and other harmful or excessive ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be a type and capacity approved by the Superintendent and shall be located as to be readily and easily accessible for cleaning and inspection. Maintenance and cleaning of such units shall be done by and at the cost of the person or firm contributing the waste involved.
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 and equipped with easily removable covers which, when bolted in place, shall be gastight and watertight.
(f) Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all times.
(g) (1) The admission into the public sewers of any waters or wastes:
A. Having a five-day BOD greater than 300 parts-per million or mg/l by weight; and/or
B. Containing more than 300 parts per million or mg/l by weight of suspended solids; and/or
C. Containing any quantity of substances having the characteristics described in subsection (c) hereof; and/or
D. Having an average daily flow greater than 50,000 gallons per day, shall be subject to the review and approval of the Director and/or the Superintendent.
The Director and/or the Superintendent shall have the right to reject any and all wastes which in their opinion may be harmful to or exceed capacities of the wastewater treatment system, or
(2) Where necessary, in the opinion of the Director and/or the Superintendent, the owner shall provide at his expense such preliminary treatment as may be necessary to:
A. Reduce the BOD to 300 mg/l and the suspended solids to 300 mg/l by weight;
B. Reduce objectionable characteristics or constituents to within the maximum limits provided for in subsection (c) herein.
C. Control the quantities and rates of discharge of such waters or wastes.
Plans, specifications and any other pertinent information relating to proposed treatment facilities shall be submitted for the approval of the Director and/or the Superintendent. No construction of such facilities shall be commenced until such approval is obtained in writing, or
(3) The discharge of industrial wastes with concentrations exceeding the normal strength limitations may be permitted when, in the opinion of the Director and/or the Superintendent, it is determined that such wastes can be satisfactorily treated without adverse effects to the collection systems. The discharge of such wastes exceeding normal strength shall be subject to and require a surcharge to compensate the Municipality for all costs associated with the collection, conveyance, treatment and final disposal for all excess concentrations as provided for in subsection (h) herein.
(h) For wastes exceeding either a five-day biochemical oxygen demand of 300 parts per million by weight, or suspended solids of 300 parts per million by weight, the extra strength surcharge determined annually as provided in Section 939.11 shall apply to all such loadings exceeding the limitations herein.
(i) Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.
(j) When required by the Superintendent, 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 approved by the Superintendent. The manhole shall be installed by the owner at his expense, and shall be maintained by him so as to be safe and accessible at all times.
(k) All measurements, tests and analyses of the characteristics of water and wastes to which reference is made in subsections (c), (d) and (g) hereof shall be determined in accordance with the Environmental Protection Agency Guidelines Establishing Test Procedures for Analysis of Pollutants (Ref. FR 10-16-73, Vol. 38, No. 199, Part II), and shall be determined at the control manhole provided for in subsection (j) 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, or other locations as determined by the Superintendent.
(l) When determined by the Director and/or the Superintendent that certain wastes and/or limitations heretofore prohibited by this chapter can be accepted without detriment to the wastewater treatment system, the Municipality may enter into special agreements with industry for the discharge of such wastes deemed acceptable.
Any agreement entered into under the provisions of this section shall stipulate the type and amount of pollutant and/or conditions permitted thereunder, the conditions of permitting such discharges and the amount of surcharge in addition to applicable user's charge that will adequately compensate the Municipality for all costs associated with collecting, pumping, treating and disposing of such discharges.
(Ord. 188-6. Passed 1-3-77.)