For the purposes of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ACT or THE ACT. The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 U.S.C. §§ 1251 et seq.
APPROVAL AUTHORITY. State of Oklahoma Department of Environmental Quality.
AUTHORIZED REPRESENTATIVE OF THE USER.
(1) If the user is a corporation:
(a) The president, secretary, treasurer, or a vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation; or
(b) The manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility, including having the explicit or implicit duty of making major capital investment recommendations, and initiate and direct other comprehensive measures to ensure long-term environmental compliance with environmental laws and regulations; can ensure that the necessary systems are established or actions taken to gather complete and accurate information for individual or general permit requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures.
(2) If the user is a partnership or sole proprietorship: a general partner or proprietor, respectively.
(3) If the user is a federal, state, or local governmental facility: a director or highest official appointed or designated to oversee the operation and performance of the activities of the government facility, or their designee.
(4) The individuals described in divisions (1) through (3) above may designate a duly authorized representative if the authorization is in writing, the authorization specifies the individual or position responsible for the overall operation of the facility from which the discharge originates or having overall responsibility for environmental matters for the company, and the written authorization is submitted to the city IPD.
BEST MANAGEMENT PRACTICES or BMPs. Schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to implement the prohibitions listed in § 53.015(A) and (B) of this chapter (40 C.F.R. § 403.5(a)(1) and (b)). BMPs include treatments requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw materials storage.
BIOCHEMICAL OXYGEN DEMAND or BOD5. 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).
CATEGORICAL INDUSTRIAL USER. An industrial user subject to a categorical pretreatment standard or categorical standard.
CATEGORICAL PRETREATMENT STANDARD or CATEGORICAL STANDARD. Any regulation containing pollutant discharge limits promulgated by EPA in accordance with § 307(b) and (c) of the Act (33 U.S.C. § 1317) which apply to a specific category of users and which appear in 40 C.F.R. Chapter I, Subchapter N, Parts 405 through 471.
CITY. The City of Durant or the City Council of Durant.
COMPOSITE SAMPLE. The sample resulting from the combination of individual wastewater samples taken at selected intervals based on an increment of either flow or time.
CONTROL AUTHORITY. The City of Durant.
DAILY MAXIMUM. The arithmetic average of all effluent samples for a pollutant collected during a calendar day.
DAILY MAXIMUM LIMIT. The maximum allowable discharge limit of a pollutant during a calendar day. Where DAILY MAXIMUM LIMITS are expressed in units of mass, the daily discharge is the total mass discharged over the course of the day. Where DAILY MAXIMUM LIMITS are expressed in terms of a concentration, the daily discharge is the arithmetic average measurement of the pollutant concentration derived from all measurements taken that day.
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.
EXISTING SOURCE. Any source of discharge, the construction or operation of which commenced prior to the publication by EPA of proposed categorical pretreatment standards, which will be applicable to such source if the standard is thereafter promulgated in accordance with § 307 of the Act.
GRAB SAMPLE. A sample which is taken from a wastestream without regard to the rate of flow in the wastestream and over a period of time not to exceed 15 minutes.
INDIRECT DISCHARGE or DISCHARGE. The introduction of pollutants into the POTW from any nondomestic source regulated under § 307(b), (c), or (d) of the Act.
INDUSTRIAL WASTES. All water-borne solids, liquids, or gaseous wastes resulting from any industrial, manufacturing, or food processing operation or process, or from the development of any natural resource, or any mixture of these with water or domestic sewage as distinct from normal domestic sewage.
INSTANTANEOUS MAXIMUM ALLOWABLE DISCHARGE LIMIT. The maximum concentration of a pollutant allowed to be discharged at any time, determined from the analysis of any discrete or composite sample collected, independent of the industrial flow rate and the duration of the sampling event.
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 operations or its sludge processes, use or disposal; and therefore, is a cause of a violation of the city’s OPDES permit or of the prevention of sewage sludge use or disposal in compliance with any of the following statutory/ regulatory provisions or permits issued there under, or any more stringent state or local regulations: § 405 of the Act; the Solid Waste Disposal Act, being 42 U.S.C. §§ 6901 et seq., including Title II commonly referred to as the Resource Conservation and Recovery Act (RCRA), 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. §§ 6901 et seq.; the Clean Air Act; 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.
LOCAL LIMITS. Specific discharge limits developed and enforced by the city upon industrial or commercial facilities to implement the general and specific discharge prohibitions listed in 40 C.F.R. § 403.5(a)(1) and (b).
MEDICAL WASTE. Isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharps, body parts, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes, and dialysis wastes.
MONTHLY AVERAGE. The sum of all daily discharges measured during a calendar month divided by the number of daily discharges measured during that month.
MONTHLY AVERAGE LIMIT. The highest allowable average of daily discharges over a calendar month, calculated as the sum of all daily discharges measured during a calendar month divided by the number of daily discharges measured during that month.
NEW SOURCE.
(1) Any building, structure, facility, or installation from which there is (or may be) a discharge of pollutants, the construction of which commenced after the publication of proposed pretreatment standards under § 307(c) of the Act which will be applicable to such source if such standards are thereafter promulgated in accordance with that section, provided that:
(a) The building, structure, facility, or installation is constructed at a site at which no other source is located;
(b) The building, structure, facility, or installation totally replaces the process or production equipment that causes the discharge of pollutants at an existing source; or
(c) The production or wastewater generating processes of the building, structure, facility, or installation are substantially independent of an existing source at the same site. In determining whether these are substantially independent, factors such as the extent to which the new facility is integrated with the existing plant, and the extent to which the new facility is engaged in the same general type of activity as the existing source, should be considered.
(2) Construction on a site at which an existing source is located results in a modification rather than a new source if the construction does not create a new building, structure, facility, or installation meeting the criteria of divisions (1)(b) or (1)(c) above but otherwise alters, replaces, or adds to existing process or production equipment.
(3) Construction of a new source as defined under this definition has commenced if the owner or operator has:
(a) Begun, or caused to begin, as part of a continuous onsite construction program:
1. Any placement, assembly, or installation of facilities or equipment; or
2. Significant site preparation work including clearing, excavation, or removal of existing buildings, structures, or facilities which is necessary for the placement, assembly, or installation of new source facilities or equipment; or
(b) Entered into a binding contractual obligation for the purchase of facilities or equipment which are intended to be used in its operation within a reasonable time. Options to purchase or contracts, which can be terminated or modified without substantial loss, and contracts for feasibility, engineering, and design studies do not constitute a contractual obligation under this division (3)(b).
NON-CONTACT COOLING WATER. Water used for cooling which does not come into direct contact with any raw material, intermediate product, waste product, or finished product.
PASS THROUGH. A discharge, which exits the POTW into 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 OPDES permit, including an increase in the magnitude or duration of violation.
PERSON. Any individual, partnership, co-partnership, firm, company, corporation, association, joint stock company, trust, estate, governmental entity, or any other legal entity; or their legal representatives, agents, or assigns. This definition includes all federal, state, and local governmental entities.
pH. A measure of the acidity or alkalinity of a solution, expressed in standard units.
POLLUTANT. Dredged spoil, 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, BOD, COD, toxicity, or odor).
PRETREATMENT. The reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties in wastewater prior to, or in lieu of, introducing such pollutants into the POTW. This reduction or alteration can be obtained by physical, chemical, or biological processes; by process changes; or by other means, except by diluting the concentration of the pollutants unless allowed by an applicable pretreatment standard.
PRETREATMENT COORDINATOR. The person designated by the city to supervise along with the Superintendent the operation of the POTW, and who is charged with certain duties and responsibilities by this chapter, or a duly authorized representative.
PRETREATMENT REQUIREMENTS. Any substantive or procedural requirement related to
pretreatment imposed on a user, other than a pretreatment standard.
PRETREATMENT STANDARD, NATIONAL PRETREATMENT STANDARD, or STANDARD. Prohibited discharge standards, categorical pretreatment standards, and local limits.
PROHIBITED DISCHARGE STANDARDS or PROHIBITED DISCHARGES. Absolute prohibitions against the discharge of certain substances; these prohibitions appear in § 53.015 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.
SANITARY SEWER. A sewer which carries sewage and to which storm, surface, and groundwater are not intentionally admitted.
SEPTIC TANK WASTE. Any sewage from holding tanks such as vessels, chemical toilets, campers, trailers, and septic tanks.
SEWAGE. Human excrement and gray water (household showers, dishwashing operations, and the like).
SIGNIFICANT INDUSTRIAL USER. Except as provided in divisions (3) and (4) below:
(1) An industrial user subject to categorical pretreatment standards;
(2) An industrial user that:
(a) Discharges an average of 25,000 gpd or more of process wastewater to the POTW (excluding sanitary, non-contact cooling, and boiler blowdown wastewater);
(b) Contributes a process wastestream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant; or
(c) Is designated as such by the city on the basis that it has a reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement.
(3) The city may determine that an industrial user subject to categorical pretreatment standards is a non-significant categorical industrial user rather than a significant industrial user on a finding that the industrial user never discharges more than 100 gallons per day (gpd) of total categorical wastewater (excluding sanitary, non-contact cooling, and boiler blowdown wastewater, unless specifically included in the pretreatment standard) and the following conditions are met:
(a) The industrial user, prior to the city’s finding, has consistently complied with all applicable categorical pretreatment standards and requirements;
(b) The industrial user annually submits the certification statement required in § 53.108(B) of this chapter, together with any additional information necessary to support the certification statement; and
(c) The industrial user never discharges any untreated concentrated wastewater.
(4) Upon a finding that a user meeting the criteria in division (2) above has no reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement, the city may at any time, on its own initiative or in response to a petition received from a user, and in accordance with procedures in 40 C.F.R. § 403.8(f)(6), determine that such user should not be considered a significant industrial user.
SLUG LOAD or SLUG. Any discharge at a flow rate or concentration which could cause a violation of the prohibited discharge standards in § 53.015 of this chapter.
STANDARD INDUSTRIAL CLASSIFICATION (SIC) CODE. A classification pursuant to the Standard Industrial Classification Manual issued by the United States Office of Management and Budget.
STORM DRAIN (sometimes termed STORM SEWER). A sewer which carries storm and surface waters and drainage, but excludes sewage and industrial wastes.
STORM WATER. Any flow occurring during or following any form of natural precipitation, and resulting from such precipitation, including snowmelt.
SUSPENDED SOLIDS. The total suspended matter that floats on the surface of, or is suspended in, water, wastewater, or other liquid, and which is removable by laboratory filtering.
USER or INDUSTRIAL USER. A source of indirect discharge to the POTW.
WASTEWATER. Liquid and water-carried industrial wastes and sewage from residential dwellings, commercial buildings, industrial and manufacturing facilities, and institutions, whether treated or untreated, which are contributed to the POTW.
WASTEWATER TREATMENT PLANT or TREATMENT PLANT. That portion of the POTW, which is designed to provide treatment of municipal sewage and industrial waste.
(Prior Code, § 53.004) (Ord. 1590, passed 4-14-2009)