For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ADMINISTRATOR. The Administrator of the U.S. Environmental Protection Agency.
APPROVING AUTHORITY. The Superintendent of the Sewerage Department of the city.
BASIC USER CHARGE. The basic assessment levied on all users of the public sewer system.
BOD. Biochemical oxygen demand. The quantity of oxygen used in the biochemical oxidation of organic matter under standard laboratory procedures in five days at 20° Celsius, expressed in milligrams per liter.
BUILDING DRAIN. That part of the lowest 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 or other approved point of discharge, beginning five feet outside the inner face of the building wall.
DIRECTOR. The Director of the Illinois Environmental Protection Agency.
EASEMENT. An acquired legal right for the specific use of land owned by others.
EFFLUENT CRITERIA. These are defined in any applicable NPDES permit. See NPDES.
FEDERAL ACT. The Federal Water Pollution Control Act, as amended, as contained in the Clean Water Act of 1977.
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 and implementing regulations.
FLOATABLE OIL. Oil, fat, or grease in a physical state such that it will be separated by gravity from wastewater by treatment in an approved pre-treatment facility. Wastewater shall be considered free of floatable fat if it is properly pre-treated 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. PROPERLY SHREDDED GARBAGE shall mean the wastes from the preparation, cooking, and dispensing of food and 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 ½ inch in any dimension.
INDUSTRIAL WASTE. Any solid, liquid, or gaseous substance discharged, permitted to flow or escaping from any industrial, manufacturing, commercial, or business establishment or process or from the development, recovery or processing of any natural resource as distinct from sanitary sewage.
MILLIGRAMS PER LITER (mg/l). A unit of the concentration of water or wastewater constituent. It is 0.001 g. of the constituent in 1,000 ml of water. MILLIGRAMS PER LITER 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. See PPM.
NATURAL OUTLET. Any outlet into a water- course, pond, ditch, lake, or other body of surface or ground water.
NPDES. Any permit or equivalent document or requirements issued by the Administrator or, where appropriated by the Director, after enactment of the Federal Water Pollution Control Amendments of 1972, to regulate the discharge of pollutants pursuant to § 402 of the federal act.
pH. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed by one of the procedures outlined in “Standard Methods.”
ppm. Parts per million, by weight. See MILLIGRAMS PER LITER.
PRETREATMENT. The treatment of wastewater from sources before introduction into the wastewater treatment works.
SEWAGE. This word is used interchangeably with wastewater.
SEWER. A pipe or conduit for conveying sewage or any other waste liquids, including storm, surface and groundwater drainage.
(1) BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal.
(2) COMBINED SEWER. A sewer which is designed and intended to receive wastewater, storm surface and ground water drainage.
(3) PUBLIC SEWER. A sewer provided by or subject to the jurisdiction of the city. It also shall include sewers within or outside the city boundaries that serve one or more persons and ultimately discharge into the city sanitary (or combined) sewer system, even though those sewers may not have been constructed with city funds.
(4) SANITARY SEWER. A sewer that conveys sewage or industrial wastes or a combination of both and into which storm, surface and ground waters or unpolluted industrial wastes are not intentionally admitted.
(5) STORM SEWER. A sewer that carries storm, surface and groundwater drainage but excludes sewage and industrial wastes other than unpolluted cooling water.
SEWER FUND. The principal accounting designation for all revenues received in operation of the sewerage system.
SEWERAGE. The system of sewers and appurtenances for the collection, transportation and pumping of 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 of duration longer than 15 minutes more than five times the average 24-hour concentration or flows during normal operation.
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 Public Health Association, American Water Works Association and Water Pollution Control Federation.
STATE ACT. The Illinois Anti-Pollution Bond Act of 1970.
STATE GRANT. The state's participation in the financing of the construction of treatment works as provided for by the Illinois Anti-Pollution Bond Act and for making the grants as filed with the Illinois Secretary of State.
STORM WATER RUNOFF. That portion of the precipitation that is drained into sewers.
SURCHARGE. The assessment, in addition to the basic user charge, if applicable, which is levied on those persons whose wastes are greater in strength than the concentration values established in § 51.40.
SUSPENDED SOLIDS. Solids that either float on the surface or are in suspension in water, sewage or industrial waste and which are removable by a laboratory filtration device. Quantitative determination of suspended solids shall be made in accordance with procedures set forth in § 51.14.
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 into the sanitary sewers and wastewater treatment facilities provided.
USER. Any and all persons, natural or artificial, including any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, governmental agency or other entity discharging wastewater to the public sewer.
USER CHARGE. A charge levied on users of treatment works for the cost of operation and maintenance.
USER CLASS. The type of user; residential, institutional/governmental, commercial or industrial, as defined below:
(1) COMMERCIAL. Transit lodging, retail and wholesale establishments or places engaged in selling merchandise or rendering services.
(2) INDUSTRIAL. Establishments engaged in manufacturing activities involving the mechanical or chemical transformation of materials of substance into products.
(3) INSTITUTIONAL/
GOVERNMENTAL. Schools, hospitals, churches, penal institutions and users associated with federal, state and local governments.
(4) RESIDENTIAL. All dwelling units such as houses, mobile homes, apartments and permanent multifamily dwellings.
WASTEWATER. The spent water of a community. WASTEWATER may be a combination of the liquid- and water-carried wastes from residences, commercial buildings, industrial plants and institutions, with any groundwater, 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 transport effluent to a watercourse.
WASTEWATER SERVICE CHARGE. The charge levied on all the users of the wastewater facilities. It shall be computed as outlined in § 51.40 and shall consist of the total of the basic user charge and a surcharge, if applicable.
WASTEWATER TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes and sludge; sometimes used synonymously with wastewater treatment plant or pollution control plant.
WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently.
WATER QUALITY STANDARDS. As defined in the Water Pollution Regulations of Illinois.
('74 Code, § 27-76) (Ord. 1030, passed 10-16-84)