(A) This chapter sets forth uniform requirements for direct or indirect contributors into the wastewater collection and treatment system for the city and enables the city to comply with all applicable state and federal laws required by the Clean Water Act of 1977, being 33 U.S.C. §§ 1251 et seq. and the general pretreatment regulations (40 C.F.R. § 403.5). This chapter shall apply to all users of the publicly-owned treatment works.
(B) The objectives of this chapter are:
(1) To prevent the introduction of pollutants into the publicly-owned treatment works that will interfere with its operation;
(2) To prevent the introduction of pollutants into the publicly-owned treatment works that will pass through the publicly-owned treatment works, inadequately treated, into receiving waters or otherwise be incompatible with the publicly-owned treatment works;
(3) To protect publicly-owned treatment works personnel who may be affected by the wastewater and sludge in the course of their employment and the general public;
(4) To promote reuse and recycling of industrial wastewater and sludge from the publicly- owned treatment works; and
(5) To enable the city to comply with its national pollutant discharge elimination system permit conditions, sludge use and disposal requirements and any other state and federal laws to which the publicly- owned treatment works is subject.
(C) The following abbreviations, when used in this chapter, shall have the designated meanings.
BOD. Biochemical oxygen demand.
C.F.R. Code of Federal Regulations.
COD. Chemical oxygen demand.
EPA. U.S. Environmental Protection Agency.
mg/l. Milligrams per liter.
mgd. Million gallons per day.
NPDES. National pollutant discharge elimination system.
ODEQ. Oklahoma Department of Environmental Quality.
POTW. Publicly-owned treatment works.
TSS. Total suspended solids.
U.S.C. United States Code.
(D) Unless a provision explicitly states otherwise, the following terms and phrases, as used in this chapter, shall have the meanings hereinafter designated.
ACT or THE ACT. The Federal Pollution Control Act, also known as the Clean Water Act, as amended, 33 U.S.C. §§ 1251 et seq.
BIOCHEMICAL OXYGEN DEMAND or BOD. The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures for five days at 20°C, usually expressed as a concentration (such as mg/l).
ENVIRONMENTAL PROTECTION AGENCY or EPA. The U.S. Environmental Protection Agency or, where appropriate, the Regional Water Management Division Director, or other duly authorized official of said agency.
INTERFERENCE. A discharge, which alone or in conjunction with a discharge or discharges from other sources, inhibits or disrupts the POTW, its treatment processes or operation or this sludge processes, use or disposal; and, therefore, is the cause of a violation of the city’s NPDES permit (including an increase in magnitude or duration of the violation) or of the prevention of sewage sludge use or disposal in compliance with any of the following statutory/regulatory provisions, or any more stringent state or local regulations: § 405 of the Act, being 33 U.S.C. § 1345; the Solid Waste Disposal Act (SWDA), including Title II, commonly referred to as the Resource Conservation and Recovery Act, being 42 U.S.C. §§ 6901 et seq.; any state regulations contained in any state sludge management plan prepared pursuant to Subtitle D of the Solid Waste Disposal Act, being 42 U.S.C. §§ 6941 et seq.; the Clean Air Act, being 42 U.S.C. §§ 7401 et seq.; the Toxic Substances Control Act, being 15 U.S.C. §§ 2601 et seq.; and the Marine Protection, Research and Sanctuaries Act, being 16 U.S.C. §§ 1431 et seq. and 33 U.S.C. §§ 1401 et seq.
OKLAHOMA DEPARTMENT OF ENVIRONMENTAL QUALITY or ODEQ or DEQ. The state agency, which permits and regulates discharges to receiving streams within the state.
PASS THROUGH. A discharge which exits the POTW into the waters of the United States in quantities or concentrations which, alone or in conjunction with a discharge or discharges from other sources, is a cause of a violation of any requirement of the city’s NPDES permit, including an increase in the magnitude or duration of a violation.
pH. The logarithm (base 10) of the reciprocal of the concentration of hydrogen ions measured in grams per liter of solution and expressed in standard units (SU).
POLLUTANT. Dredged soil, solid waste, incinerator residue, filter backwash, sewage, garbage, sewage sludge, munitions, medical wastes, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, municipal, agricultural and industrial wastes, and certain characteristics of wastewater (such as, pH, temperature, TSS, turbidity, color, EOD, COD, toxicity, odor).
PRETREATMENT STANDARDS or STANDARDS. Pretreatment standards shall mean prohibited discharge standards, categorical pretreatment standards and local limits.
PROHIBITED DISCHARGE STANDARDS or PROHIBITED DISCHARGES. Absolute prohibitions against the discharge of certain substances; these prohibited discharges are listed in § 53.09 of this chapter.
PUBLICLY OWNED TREATMENT WORKS or POTW. A treatment works, as defined by § 212 of the Act (33 U.S.C. § 1292), which is owned by the city. This definition includes any devices or systems used in the collection, storage, treatment, recycling and reclamation of sewage or industrial wastes of a liquid nature and any conveyances, which convey wastewater to a treatment plant.
SEWAGE. Human excrement and gray water (household showers, dishwashing operations and the like).
SIGNIFICANT INDUSTRIAL USER or SIU. The term SIGNIFICANT INDUSTRIAL USER means:
(a) All industrial users subject to Categorical Pretreatment Standards under 40 C.F.R. § 403.6 and 40 C.F.R. Ch. I, Subch. N;
(b) Any other industrial user that discharges an average of 25,000 gallons per day or more of process water;
(c) Any industrial user that contributes a process wastestream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the wastewater treatment facility; and
(d) Any industrial user that is designated as significant by the city on the basis that the industrial user has a reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement.
SUPERINTENDENT. The person designated by the city to supervise the operation of the POTW, and who is charged with certain duties and responsibilities by this chapter or a duly authorized representative.
USER or INDUSTRIAL USER. An industrial source process wastewater discharged into the municipal sanitary sewer system.
(2002 Code, § 53.01)