For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
“ACT.” The Federal Water Pollution Control Act, as amended, 33 U.S.C. 1251, et seq.
“ADMINISTRATOR.” The administrator of the U.S. Environmental Protection Agency.
“B.O.D.” (biochemical oxygen demand) 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.
“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, beginning five feet outside the inner face of the building wall.
“BUILDING SEWER.” The extension from the building drain to the public sewer or other place of disposal.
“COMBINED SEWER.” A sewer receiving both surface runoff and sewage.
“COMPATIBLE POLLUTANT.” Biochemical oxygen demand, suspended solids, pH, and fecal coliform bacteria, plus additional pollutants identified in the NPDES permit.
“DIRECTOR.” The chief administrative officer of a state water pollution control agency or interstate agency. In the event responsibility for water pollution control and enforcement is divided among two or more state or interstate agencies, “DIRECTOR” means the administrative officer authorized to perform the particular procedure to which reference is made.
“EASEMENT.” An acquired legal right for the specific use of land owned by others.
“FEDERAL GRANT.” The U.S. government participation in the financing of the construction of treatment works as provided for by Title II, Grants for Construction of Treatment Works, of the Act.
“FLOATABLE OIL.” Oil, fat or grease in a physical state such that it will separate by gravity from waste water by treatment in an approved pretreatment facility. Waste water shall be considered free of floatable fat if it is properly pretreated and the waste water does not interfere with the collection system.
“GARBAGE.” Solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage, and sale of produce.
“INCOMPATIBLE POLLUTANT.” Any pollutant which is not a compatible pollutant as defined above.
“INDUSTRIAL USER.” Any nongovernmental user of publicly-owned treatment works identified in the Standard Industrial Classification Manual, 1972, Office of Management and Budget, as amended and supplemented, under the following divisions:
(1) Division A Agriculture, forestry, and fishing.
(2) Division B Mining.
(3) Division D Manufacturing.
(4) Division E Transportation, communications, electric, gas, and sanitary services.
(5) Division I Services.
A user in the divisions listed may be excluded if it is determined by the Superintendent that it will introduce primarily segregated domestic wastes or wastes from sanitary conveniences.
“INDUSTRIAL WASTES.” The liquid wastes from industrial manufacturing processes, trade, or business as distinct from sanitary sewage.
“MAJOR CONTRIBUTING INDUSTRY.” An industrial user of the publicly-owned treatment works that:
(1) Has a flow of 50,000 gallons or more per average work day;
(2) Has a flow greater than 5% of the flow carried by the municipal system receiving the waste;
(3) Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under section 307 (a) of the Act; or
(4) Is found by the permit issuance authority, in connection with the issuance of an NPDES permit to the publicly-owned treatment works receiving the waste, to have significant impact, either singly or in combination with other contributing industries, on that treatment works or upon the quality of effluent from that treatment works.
“MILLIGRAMS PER LITER.” A unit of the concentration of water or waste water constituent. It is 0.001 gram of the constituent in 1,000 milliliters of water. It has replaced the unit formerly used commonly, parts per million, to which it is approximately equivalent, in reporting the results of water and waste water analysis.
“NATURAL OUTLET.” Any outlet into a watercourse, pond, ditch, lake, or other body of surface or ground water.
“NPDES PERMIT.” Any permit or equivalent document or requirements issued by the administrator, or, where appropriate by the director, after enactment of the Federal Water Pollution Control Amendments of 1972, to regulate the discharge of pollutants pursuant to section 402 of the Act.
“pH.” The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
“ppm.” Parts per million by weight.
“POPULATION EQUIVALENT.” A term used to evaluate the impact of industrial or other waste on a treatment works or stream. One population equivalent is 100 gallons of sewage per day, containing 0.17 pound of B.O.D. and 0.2 pound of suspended solids. The impact on a treatment works is evaluated as the equivalent of the highest of the three parameters. Impact on a stream is the higher of the B.O.D. and suspended solids parameters.
“PRETREATMENT.” The treatment of waste waters from sources before introduction into the waste water treatment works.
“PROPERLY SHREDDED GARBAGE.” The wastes from the preparation, cooking, and dispensing of food that have been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than 1/2 inch in any dimension.
“PUBLIC SEWER.” A sewer in which all owners of abutting properties have equal rights, and which is controlled by public authority.
“REPLACEMENT.” Expenditures for obtaining and installing equipment, accessories, or appurtenances which are necessary during the service life of the treatment works to maintain the capacity and performance for which such works were designed and constructed. The term “OPERATION AND MAINTENANCE” includes replacement.
“RESIDENTIAL, COMMERCIAL OR NONINDUSTRIAL USER.” Any user of the treatment works not classified as an industrial user or excluded as an industrial user as defined above.
“SANITARY SEWER.” A sewer which carries sewage and to which storm, surface, and ground waters are not intentionally admitted.
“SEWAGE.” A combination of the water- carried wastes from residences, business buildings, institutions, and industrial establishments, together with such ground, surface, and storm waters as may be present.
“SEWAGE TREATMENT PLANT.” Any arrangement of devices and structures used for treating sewage.
“SEWAGE WORKS.” All facilities for collection, pumping, treating, and disposing of sewage.
“SEWER.” A pipe or conduit for carrying sewage.
“SLUG.” Any discharge of water, sewage, or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period longer than 15 minutes more than five times the average 24- hour concentration or flows during normal operation.
“STORM DRAIN” or “STORM SEWER.” A sewer which carries storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.
“SUPERINTENDENT.” The Superintendent of Water Pollution Control of the City of Tuscola or his authorized deputy, agent, or representative.
“SUSPENDED SOLIDS.” Solids that either float on the surface of, or are in suspension in water, sewage, or other liquids, and which are removable by laboratory filtering.
“UNPOLLUTED WATER.” Water of quality equal to or better than the effluent criteria in effect or water that would not cause violation of receiving water quality standards and would not be benefitted by discharge to the sanitary sewers and waste water treatment facilities provided.
“USEFUL LIFE.” The estimated period during which the treatment works will be operated and shall be 20 years from the date of start-up of any waste water facilities constructed with a federal grant.
“USER CHARGE.” A charge levied on users of treatment works for the cost of operation and maintenance including replacement and the cost of any bond debt of such works.
“USER CLASS.” The type of user, either residential or commercial or industrial, as defined above.
“WASTE WATER.” The spent water of a community. It may be a combination of the liquid- and water-carried wastes from residences, commercial buildings, industrial plants, and institutions, together with any ground water, surface water, and storm water that may be present.
“WASTE WATER FACILITIES. “The structures, equipment, and processes required to collect, carry away, and treat domestic and industrial wastes and dispose of the effluent.
“WASTE WATER TREATMENT WORKS.” An arrangement of devices and structures for treating waste water, industrial wastes, and sludge. Sometimes used as synonymous with “waste treatment plant” or “waste water treatment plant” or “pollution control plant.”
“WATERCOURSE.” A channel in which a flow of water occurs either continuously or intermittently.
(Ord. 75-0-2, passed 4-28-75)