For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
APPROVING AUTHORITY. The City Clerk/Treasurer or his or her duly authorized representatives.
BOD or BIOCHEMICAL OXYGEN DEMAND. The quantity of oxygen utilized in the biochemical oxidation of organic matter in 5 days as 20°C, expressed as milligrams per liter (mg/l). Quantitative determination of BOD shall be made in accordance with procedures set forth in Standard Methods.
BUILDING DRAIN. That part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste and other drainage pipes inside the walls of the building and conveys it to the building sewer.
BUILDING SEWER. A sanitary sewer which begins immediately outside of the foundation wall of any building or structure being served, and ends to its connection to the public sewer.
CHLORINE REQUIREMENT. The amount of chlorine, in mg/l, which must be added to sewage to produce a residual chlorine as specified in the national pollutant discharge elimination system (NPDES) permit.
CITY. The City of Osakis.
COMBINED SEWER. A sewer intended to receive both wastewater and storm or surface water.
COMMERCIAL USER. Any place of business which discharges sanitary waste as distinct from industrial wastewater.
COMPATIBLE POLLUTANTS. BOD, suspended solids, nitrogen, pH or fecal coliform bacteria, plus additional pollutants indemnified in the city's NPDES permit for its wastewater treatment facility; provided that the facility is designed to treat additional pollutants, and, in fact, does remove those pollutants to a substantial degree.
DEBT SERVICE CHARGE. That portion of the sewer service charge relating to the cost of retiring outstanding bond issues or other long term obligations of the wastewater collection and treatment facilities.
EASEMENT. An acquired legal right for the specified use of land owned by others.
FLOATABLE OIL. Oil, fat or grease in a physical state such that it will separate by gravity from wastewater by treatment in an approved pretreatment facility. Wastewater shall be considered free of FLOATABLE OIL if it is properly pretreated and the wastewater does not interfere with the collection system.
GOVERNMENTAL USER. Users which are units, agencies or instrumentalities of federal, state or local government discharging normal domestic strength wastewater.
GROUND GARBAGE. The residue from the preparation, cooking, dispensing, handling, storage, and sale of food products and produce that has been shredded to a degree so that all particles will be carried freely in suspension under the flow conditions normally prevailing in public sewers with no particle greater than 1/2 inch in any dimension.
INCOMPATIBLE POLLUTANTS. Wastewater with pollutants that will adversely affect the wastewater collection and treatment facilities or disrupt the quality of wastewater treatment if discharged to the wastewater collection and treatment facilities.
INDUSTRIAL USERS or INDUSTRIES.
(1) Entities that discharge into a publicly owned wastewater treatment works, liquid wastes resulting from the processes employed in industrial or manufacturing processes, or from the development of any natural resources.
(2) These are identified in the Standard Industrial Classification Manual, 1972, Office of Management and Budget, as amended and supplemental under one of the following divisions:
(a) Division A: Agriculture, Forestry and Fishing;
(b) Division B: Mining;
(c) Division C: Manufacturing;
(d) Division E: Transportation, Communications, Electric, Gas and Sanitary Sewers; or
(e) Division I: Services.
(3) For the purpose of this definition,
DOMESTIC WASTE shall be considered to have the following characteristics:
(a) BOD5: less than 200 mg/l; and
(b) Suspended solids: less than 200 mg/l.
(4) Any non-governmental user of a publicly owned treatment works which discharges wastewater to the treatment works which contains toxic pollutants or poisonous solids, liquids or gases in sufficient quantity either singly or by interaction with other wastes, to contaminate the sludge or any municipal systems or to injure or to interfere with any sewage treatment process, or which constitutes a hazard to humans or animals, creates a public nuisance or creates any hazard in or has an adverse effect on the waters receiving any discharge from the treatment works.
INDUSTRIAL WASTE. Any solid, liquid or gaseous substance discharged or escaping from any industrial or manufacturing process or from the development of any natural resources. This term includes any wastewater which is not sanitary sewage.
INSTITUTIONAL USER. A user of the treatment facilities whose establishment is primarily engaged in activities of an educations, religious, social, cultural, charitable or human services nature (e.g., churches, non-profit organizations).
MAY. Permissible.
MUNICIPALITY. The City of Osakis.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT.
(1) A document issued by the Minnesota Pollution Control Agency which establishes effluent limitations and monitoring requirements for the municipal wastewater treatment facility.
(2) NPDES PERMIT No. MN0020028 and modifications thereof pertain to the municipal wastewater treatment facility.
NATURAL OUTLET. Any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface water or groundwaters.
NORMAL DOMESTIC STRENGTH WASTEWATER. Wastewater with concentrations of BOD no greater than 200 mg/l and suspended solids no greater than 200 mg/l.
OPERATION AND MAINTENANCE COSTS. Includes all costs associated with the operation and maintenance of the wastewater collection and treatment facilities during the design or useful life of the wastewater treatment facilities, including administration and replacement costs, all as determined from time to time, by the city.
PERSON. Any and all persons, including any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, governmental agency or other entity.
pH. The logarithm of the reciprocal of the hydrogen-ion concentration. The concentration is the weight of hydrogen ions, in grams per liter of solution. Neutral water, for example, has a pH value of 7 and a hydrogen-ion concentration of 10-7.
PUBLIC SEWER. Any publicly owned sewer, storm drain, sanitary sewer or combined sewer.
REPLACEMENT COSTS. Expenditures for obtaining and installing equipment, accessories or appurtenance which are necessary during the designer useful life of the wastewater treatment facility whichever is longer to maintain the capacity and performance for which the facilities were designed and constructed. Operation and maintenance costs include REPLACEMENT COSTS.
RESIDENTIAL USER. A user of the treatment facilities whose premises or building is used primarily as a residence for 1 or more persons, including dwelling units such as detached and semi-detached housing, apartments and mobile homes; and which discharges primarily normal domestic strength sanitary wastes.
SANITARY SEWAGE. A combination of liquid and water carried wastes discharged from toilets and/or sanitary plumbing facilities.
SANITARY SEWER. A sewer that carries sewage or wastewater.
SEWAGE. The spent water of a person or community. The preferred term is WASTEWATER.
SEWER. A pipe or conduit that carries wastewater or drainage water.
SEWER SERVICE CHARGE. A charge levied on users of the wastewater collection and treatment facilities for payment of operation and maintenance expenses, debt service costs and other expenses or obligations of the facilities.
SHALL. Mandatory.
SLUG. Any discharge of water or wastewater which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes, more than 5 times the average 24-hour concentration of flows during normal operation, and/or adversely affects the wastewater collection system and/or performance of the wastewater treatment facility.
STANDARD METHODS. The examination and analytical procedures set forth in the most recent edition of Standard Methods for the Examination of Water and Wastewater, published jointly by the American Water Works Association, and the Water Pollution Control Federation.
STORM SEWER or DRAIN. A drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source.
SUSPENDED SOLIDS. Total suspended matter that either floats on the surface of, or is in suspension in, water, wastewater or other liquids, and that is removable by laboratory filtering as prescribed in Standard Methods for the Examination of Water and Wastewater, and referred to as NONFILTERABLE RESIDUE.
UNPOLLUTED WATER. Water of quality equal to or better than the effluent of the wastewater treatment facilities or water that would not cause violation of receiving water quality standards, and would not be benefitted by discharge to the sanitary sewers and wastewater treatment facilities.
USER CHARGE. A charge levied on users of the wastewater collection and treatment facilities for payment of operation and maintenance expenses of those facilities.
WASTEWATER. The spent water of a community or person. From the standpoint of source, it may be a combination of the liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions, together with any groundwater, surface water and storm water that may be present.
WASTEWATER COLLECTION FACILITIES or WASTEWATER COLLECTION SYSTEM. The structures and equipment required to collect and carry wastewater.
WASTEWATER TREATMENT FACILITY. An arrangement of devices and structures for treating wastewater and sludge. Also referred to as WASTEWATER TREATMENT PLAN.
(1986 Code, § 403.01)