§ 51.001  DEFINITIONS.
   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 United States 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.
   CITY. The City of O’Fallon; and any reference to WITHIN THE CITY shall mean all territory within the perimeter of the City of O’Fallon boundaries.
   CITY ENGINEER. The City Engineer of water pollution control of the city, or his or her authorized deputy, agent or representative.
   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, the term 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.
   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. A wastewater shall be considered free of floatable fat if it is properly pretreated and the wastewater 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. As it pertains to user charge system means a manufacturing or processing facility which is engaged in a productive or profit- making venture.
   INDUSTRIAL WASTES. The liquid wastes from industrial manufacturing processes, trade or business as distinct from sanitary sewage.
   MAY. A permissive term.
   MILLIGRAMS PER LITER. A unit of the concentration of water or wastewater constituent. It is 0.001 g of the constituent in 1,000 ml 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 wastewater analysis.
   NATURAL OUTLET. Any outlet into a watercourse, pond, ditch and the like or other body of surface or ground water.
   NPDES PERMIT (NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM 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 33 U.S.C. § 1342.
   pH. The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
   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 pounds of B.O.D. and 0.20 pounds 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.
   ppm. Parts per million by weight.
   PRETREATMENT. The treatment of wastewaters from sources before introduction into the wastewater treatment works.
   PROPERLY SHREDDED GARBAGE. The wastes from the preparation, cooking and dispensing of food that has 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 one-half 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.
   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.
   SHALL. A mandatory term.
   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 of duration 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.
   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 a 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 wastewater treatment facilities provided.
   USER CHARGE. A charge levied on users of treatment works for the cost of operation and maintenance including replacement of such works.
   USER RATE. 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.
   WASTEWATER. The spent water of a community. From this standpoint, of course, it may be a combination of the liquids 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.
   WASTEWATER FACILITIES. The structures, equipment and processes required to collect, carry away and treat domestic and industrial wastes and dispose of the effluent.
   WASTEWATER TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes and sludge. Sometimes used as synonymous with WASTE TREATMENT PLANT, WASTEWATER TREATMENT PLANT or POLLUTION CONTROL PLANT.
   WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently.
(1999 Code, § 51.001)  (Ord. 818, passed 9-1-1977)