(A) For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ACT. The Federal Water 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 procedure in five days at 20°C expressed in terms of weight and concentration (milligrams per liter (mg/l)).
GENERAL PRETREATMENT REGULATIONS. The general pretreatment regulations for existing and new sources of pollution promulgated by the EPA under § 307(b) and (c) of the Act, being 33 U.S.C. § 1317(b) and (c) and found at 40 C.F.R. part 403.
INDUSTRIAL USER. A person who discharges to the wastewater treatment system liquid wastes resulting from the processes employed in industrial, manufacturing, trade or business establishments, or from the development of any natural resource.
INTERFERENCE. A discharge by an industrial user which, alone or in conjunction with discharges by other sources, inhibits or disrupts the wastewater collection and treatment facilities, its treatment processes or operations, or its sludge processes, use or disposal and which 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) or state disposal system permit, or of the prevention of sewage sludge use or disposal by the city in accordance with the following statutory provisions and regulations or permits issued thereunder (or more stringent state or local regulations): § 405 of the Clean Water Act, being 33 U.S.C. §1345, the Solid Waste Disposal Act, being 42 U.S.C. §§ 6901 et seq. (SWDA) (including Title II, more commonly referred to as the Resource Conservation and Recovery Act (RCRA), and including 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., the Toxic Substance 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.
MINNESOTA PRETREATMENT RULES. Minn. Rules Ch. 7049 that implement the general pretreatment regulations, federal categorical pretreatment standards and the authorities of M.S. § 115.03, Subd. 1, par. (e), clause (2). This definition may also be used in the singular as MINNESOTA PRETREATMENT RULE.
NATIONAL CATEGORICAL PRETREATMENT STANDARDS. National pretreatment standards specifying quantities or concentrations of pollutants or pollutant properties which may be discharged or introduced into the wastewater treatment system by specific industrial users.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM OR NPDES PERMIT. Any permit or requirements issued by the State Pollution Control Agency (MPCA) pursuant to the Federal Water Pollution Control Act, as amended, for the purpose of regulating the discharge of wastewater, industrial wastes or other wastes under the authority of § 402 of the Act, being 33 U.S.C. § 1342.
NON-CONTACT COOLING WATER. The water discharged from any use such as air conditioning, cooling or refrigeration, or during which the only pollutant added to the water is heat.
PERSON. Any individual, partnership, association, corporation, public agency and any other organization or group of individuals, public or private.
pH. The logarithm (base ten) of the reciprocal of the concentration of hydrogen ions in moles per liter.
PRETREATMENT.
(a) The process of equalizing or reducing the amount of pollutants, eliminating pollutants or altering the nature of pollutant properties in wastewater to a less harmful state prior to or in lieu of discharging or otherwise introducing the pollutants into the wastewater treatment system.
(b) The reduction, elimination or alteration may be obtained by physical, chemical or biological processes, process changes or other means, except as prohibited by § 53.078(D) of this code.
PUBLICALLY OWNED TREATMENT WORKS (POTW). A treatment works as defined in M.S. § 115.01, Subd. 21, that is owned by a state or municipality as defined by § 502(4) of the Clean Water Act, 33 U.S.C. § 1362(4) and M.S. § 115.41, as it may be amended from time to time. This term includes POTW PLANT and POTW AUTHORITY.
SIGNIFICANT INDUSTRIAL USER. Any industrial user of the wastewater treatment system which:
(a) Has a discharge flow of 25,000 gallons or more per average work day;
(b) Has a flow greater than 5% of the flow in the wastewater treatment system;
(c) Has in its wastes toxic pollutants as defined pursuant to § 307 of the Act, being 33 U.S.C. § 1317, or Minnesota Statutes and Minn. Rules; or
(d) Has a significant impact, either singly or in combination with other contributing industries, on the wastewater treatment system, the quality of sludge, the system’s effluent quality or air emissions generated by the system.
SLUG. Any waste discharge into the wastewater treatment system which, in concentration of any given constituent, except pH, or in quantity of flow, exceeds four times the average concentration or flow rate for a normal operating day.
STATE DISPOSAL SYSTEM PERMIT. Any permit, including any terms, conditions and requirements thereof, issued by the MPCA pursuant to M.S. § 115.07, as it may be amended from time to time, for a treatment system as defined by M.S. § 115.01(8), as it may be amended from time to time.
STORM WATER. Any flow occurring during or following any form of natural precipitation and resulting therefrom.
SUSPENDED SOLIDS. The total suspended matter that floats on the surface of, or is suspended in, water, wastewater or other liquids, and which is removable by a standard glass fiber filter.
USER. Any person who discharges, causes or permits the discharge of wastewater into the wastewater treatment system.
WASTEWATER. The liquid and water-carried industrial or domestic wastes from dwellings, commercial buildings, industrial facilities and institutions, together with any ground water, surface water and storm water that may be present, whether treated or untreated, which is discharged into or permitted to enter the wastewater treatment system.
WASTEWATER DISCHARGE PERMIT or PERMIT. A permit issued by the city to an industrial user to use the city’s wastewater treatment system, as established in § 53.081 of this code.
WASTEWATER TREATMENT SYSTEM or SYSTEM. Any devices, facilities, structures, equipment or works owned or used by the city for the purpose of transmission, storage or treatment of industrial and domestic wastewater, including intercepting sewers, outfall sewers, wastewater collection system, pumping, power and other equipment, and their appurtenances; extensions, improvements, remodeling, additions and alterations thereof; and any works, including land, that will be an integral part of the treatment process or is used for ultimate disposal of residues resulting from that treatment.
WATERS OF THE STATE. All streams, lakes, ponds, marshes, aquifers, irrigation systems, drainage systems and all other bodies or accumulations of water, surface or underground, natural or artificial, public or private, which are contained within, flow through or border upon the state or any portion thereof.
(B) Terms not otherwise defined herein shall be as given in M.S. Ch. 115 and 116, as they may be amended from time to time.
(2004 Code, § 53.071) (Ord. 727, passed 12-12-1985; Ord. 14-0722, passed 3-11-2014)