For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates of requires a different meaning.
ABBREVIATIONS.
(1) C.F.R. Code of Federal Regulations.
(2) NPDES. National Pollutant Discharge Elimination System.
(3) RCRA. Resource Conservation and Recovery Act.
(4) SWDA. Solid Waste Disposal Act (42 U.S.C. §§ 6901 et seq.).
(5) U.S.C. United Stated Code.
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.
AUTHORIZED REPRESENTATIVE OF THE INDUSTRIAL USER. A responsible corporate officer or manager, a partner, proprietor or representative as defined in 40 C.F.R. § 403.12(1).
BIOCHEMICAL OXYGEN DEMAND (BOD). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20°C, expressed in milligrams per liter (mg/l).
CATEGORICAL PRETREATMENT STANDARD. Any regulation containing pollutant discharge limits promulgated by the U.S. EPA in accordance with § 307 (b) and (c) of the Act (33 U.S.C. § 1317) which apply to a specific category of industrial users and which appear in 40 C.F.R. Chapter I, Subchapter N, parts 405 through 471.
COLOR. The optical density at the visual wave length of maximum absorption, relative to distilled water.
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.
ENVIRONMENTAL PROTECTION AGENCY or EPA. The U.S. Environmental Protection Agency or, where appropriate, the term may also be used as a designation for 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 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 waste stream on a one-time basis without regard to the flow in the waste stream and without consideration of time.
INDUSTRIAL USER. A source of pollutants introduced into the POTW from any non-domestic source regulated under § 307 (b), (c) or (d) of the Act.
INTERFERENCE. A discharge which alone or in conjunction with a discharge or discharges from other sources:
(1) Inhibits or disrupts the POTW, its treatment processes or operations or its sludge process, use or disposal; and
(2) Therefore, is a cause of a violation of the city’s NPDES permit or of the prevention of sewage sludge use or disposal in compliance with the following statutory provisions and regulations or permits issued thereunder: § 405 of the Clean Water Act (CWA), being 33 U.S.C. § 1345; the SWDA, including Title II (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 SWDA; the Clean Air Act, being 42 U.S.C. §§ 7401 et seq.; and the Toxic Substance Control Act, being 15 U.S.C. §§ 2601 et seq.
MEDICAL WASTE. Isolation wastes, infectious agents, human blood and blood by-products, pathological wastes, sharps, body parts, fomites, etiologic agents, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes and dialysis wastes.
NEW SOURCE. Any building, structure, facility or installation from which there is or may be a discharge of pollutants, the construction of which commences after the publication of proposed pretreatment standards under § 307(c) of the Act which will be applicable to such source if such standards are therefore promulgated in accordance with that section.
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 U.S. in quantities or concentration 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).
PERSON. Any individual, partnership, copartnership, 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 or local governmental entities.
pH. A measure of the acidity or alkalinity of a substance, expressed in standard units.
POLLUTANT. Any dredged spoil, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, medical wastes, chemical wastes, industrial wastes, biological materials, radioactive materials, heat, wrecked or discharged equipment, rock, sand, cellar dirt, agricultural or industrial wastes, and the characteristics of the wastewater (i.e., pH, temperature, TSS, turbidity, color, BOD, chemical oxygen demand (COD), toxicity, odor).
PRETREATMENT. The reduction of the amount of pollutants, the elimination of pollutants or the alteration of the nature of pollutants 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 REQUIREMENTS. Any substantive or procedural requirement related to pretreatment imposed on an industrial user, other than a pretreatment standard.
PRETREATMENT STANDARDS or STANDARDS. Pretreatment standards shall mean prohibitive 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 § 8-2-2(A) of this chapter.
PUBLICLY OWNED TREATMENT WORKS (POTW). A “treatment-works” as defined by § 212 of the Act (33 U.S.C. § 1292), which is owned by the municipality. This definition includes any devices or systems used in the collection, storage, treatment, recycling and reclamation of sewage or industrial wastes and any conveyances which convey wastewater to a treatment plant. The term also means the municipal entity having jurisdiction over the industrial users and responsibility for the operation and maintenance of the treatment works.
SEPTIC TANK WASTE. Any sewerage 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).
SHALL; MAY; TENSES. “Shall” is mandatory; “may” is permissive or discretionary. The use of the singular shall be construed to include the plural and the plural shall include the singular as indicated by the context of its use.
SIGNIFICANT INDUSTRIAL USER. Applies to:
(1) Industrial users subject to categorical pretreatment standards; and
(2) Any other industrial user that:
(a) Discharges an average of 25,000 gpd or more of process wastewater;
(b) Contributes a process waste stream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the treatment plant; or
(c) Is designated as significant by the city on the basis that the industrial user has a reasonable potential for adversely affecting the POW’s operation or for violating any pretreatment standard or requirement.
SLUG LOAD. Any discharge at a flow rate or concentration which could cause a violation of the prohibited discharge standards of this chapter or any discharge of a non-routine, episodic nature, including, but not limited to, an accidental spill or a non- customary batch discharge.
STANDARD INDUSTRIAL CLASSIFICATION (SIC) CODE. A classification pursuant to the Standard Industrial Classification Manual issued by the U.S. Office of Management and Budget.
STORM WATER. Any flow occurring during or following any form of natural precipitation, and resulting therefrom, including snowmelt.
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 his or her duly authorized representative.
SUSPENDED SOLIDS. Solids that either float on the surface or are in suspension in water, sewage or other liquids, and which are removable by laboratory filtering.
TOXIC POLLUTANT. One of 126 pollutants or combination of those pollutants, listed as toxic in regulations promulgated by the EPA under the provision of § 307 (33 U.S.C. § 1317) of the Act.
TREATMENT PLANT EFFLUENT. Any discharge of pollutants from the POTW into waters of the state.
WASTEWATER. Liquid and water-carried industrial wastes and sewage from residential dwelling, commercial buildings, industrial and manufacturing facilities and institutions, whether treated or untreated, which are contributed to the POTW.
WASTEWATER TREATMENT PLANT or TREATMENT PLANT. The portion of the POTW designed to provide treatment of sewage and industrial waste.
(Ord. C-172, passed 9-7-1993)