For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning. Terms not otherwise defined herein shall be as given in M.S. Ch. 115 and M.S. Ch. 116, as they may be amended from time to time.
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 (BOD5). 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)).
CITY. The City of Monticello or the City Council of Monticello.
COMMERCIAL USER. A person engaged in a trade or business and who discharges only domestic sanitary waste in amounts less than 25,000 gallons per day or having less than 43 pounds BOD5 or 50 pound suspended solids per day. A commercial user shall be exempt from permit filing and associated fees. Any person discharging more than state waste quantities shall be considered an industrial user for the purposes of this chapter.
DIRECTOR; SUPERINTENDENT. The Director of the Public Works Department of the city. The SUPERINTENDENT of the wastewater disposal system shall have the same authority in the absence of the DIRECTOR.
IMMINENT OR SUBSTANTIAL ENDANGERMENT. A condition occurring that is an immediate danger caused by a discharge to the sewer system that is one or more of the following:
(1) A toxic discharge that would cause disruption of treatment process or prohibit or substantially limit sludge application or disposal;
(2) A flammable discharge that is of sufficient quantity to, alone or in combination with other gases or substances, create an explosive condition;
(3) A discharge that, either alone or in combination with other normally present substances, would cause toxic vapors or fumes to be created;
(4) A discharge of solid or viscous materials that would cause an immediate plugging problem in sewer or pumping mechanisms;
(5) Any radioactive wastes as defined by the NRC, AEC, and/or other state and federal agencies; and/or
(6) Any liquid slug load greater than 25,000 gallons discharged in one hour or less.
INDUSTRIAL USER. A person who discharges to the city’s wastewater disposal system liquid wastes resulting from the processes employed in industrial, manufacturing, or from the development of any natural resource.
INTERFERENCE. The inhibition or disruption of the city’s wastewater disposal system processes or operations which causes or significantly contributes to a violation of any requirement of the city’s NPDES or state disposal system permit. The term includes prevention of sewage sludge use or disposal by the city in accordance with local, state, and federal rules or regulations.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT. Any permit or requirements issued by the Minnesota Pollution Control Agency (MPCA) pursuant to the Federal Water Pollution Control Act, as amended (33 U.S.C. §§ 1251 et seq.) for the purpose of regulating the discharge of sewage, 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.
PERMIT. The wastewater discharge permit issued by the city to industrial users.
PERSON. Any corporation, individual, partnership, association, public agency, and any other organization or group of individuals, public or private.
pH. The logarithm of the reciprocal of the concentration of hydrogen ions in grams per liter of solution.
PRETREATMENT. The process of 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 city’s wastewater disposal system. The reduction, elimination, or alteration may be obtained by physical, chemical, or biological processes, process changes, or other means, except by dilution as prohibited by § 52.019.
SHALL. Is mandatory; MAY is permissive.
SIGNIFICANT INDUSTRIAL USER. Any industrial user of the city’s wastewater disposal system which:
(1) Has a discharge flow of 25,000 gallons or more per average work day;
(2) Has a flow greater than 5% of the flow in the city’s wastewater disposal system; or
(3) Has BOD or suspended solids loading equivalent to domestic strength sewage at the flow defined in divisions (1) or (2) above;
(4) Has in its wastes at the point of discharge toxic pollutants (as defined pursuant to § 307 of the Act, being 33 U.S.C. § 1317, or state statutes and rules) in sufficient quantity, either singly or by interaction with other pollutants, to inhibit or disrupt any wastewater treatment process, constitute a hazard to humans or animals, or create a toxic effect in the wastewater system; or
(5) Has a significant impact, either singly or in combination with other contributing industries, on the wastewater disposal system, the quality of sludge, the system’s effluent quality, or air emissions generated by the system.
STATE. The State of Minnesota.
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 disposal system as defined by M.S. § 115.01, subd. 5, as it may be amended from time to time.
STORMWATER. 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 city’s wastewater disposal 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 stormwater that may be present, whether treated or untreated, which is discharged into or permitted to enter the city’s wastewater disposal system.
WASTEWATER DISPOSAL SYSTEM or SYSTEM. Any devices, facilities, structures, equipment, or works owned or used by the city for the purpose of the transmission, storage, treatment, recycling, and reclamation of industrial and domestic wastewater or necessary to recycle or reuse water, including intercepting sewers, outfall sewers, sewage collection system, pumping, power, and other equipment, and their appurtenances; extensions, improvements, remodeling, additions, and alterations thereof; elements essential to provide a reliable recycled water supply such as standby treatment units and clear well facilities; 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 the treatment. The SYSTEM shall be designed, operated, and maintained in accordance with acceptable engineering standards.
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.
(Prior Code, § 14-1-2) (Ord. 132, passed 1-23-1984)