Unless the context otherwise requires, the meanings of terms used in this chapter shall be as follows:
CAPITAL IMPROVEMENTS: Improvements to the wastewater facilities, including replacement or improvement of existing facilities, or construction of new facilities, to meet current or future needs.
CONTROL MANHOLE: A structure located on a site from which industrial wastes are discharged. Where feasible, the manhole shall have an interior drop. The purpose of a control manhole is to provide access for the city representative to sample and/or measure discharges.
EFFLUENT CRITERIA: Those defined in an applicable NPDES permit.
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.
MAJOR CONTRIBUTING INDUSTRY: An industrial user of the publicly owned treatment works that:
A. Has a flow of fifty thousand (50,000) gallons or more per average workday; or
B. Has a flow greater than ten percent (10%) of the flow carried by the municipal system receiving the waste; or
C. Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under applicable federal legislation; or
D. Is found by the permit issuance authority, in connection with the issuance of the 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.
NPDES PERMIT: The national pollutant discharge elimination system permit, or any equivalent document or requirements, issued by the United States environmental protection agency or, where appropriate, by the Illinois environmental protection agency, pursuant to applicable federal legislation, and, where appropriate, the delegation of such regulation to the state of Illinois.
OPERATION AND MAINTENANCE: Includes replacement.
PERSON: Any and all persons, natural or artificial, including any individual, firm, company, municipal or private corporation, unincorporated association, society, institution, enterprise, governmental agency, or other entity.
POPULATION EQUIVALENT: A term used to evaluate the impact of industrial or other waste on a treatment works or stream. One population equivalent is one hundred (100) gallons of sewage per day, containing 0.17 pound of biochemical oxygen demand and 0.20 pound of suspended solids.
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 the works were designed and constructed.
SEWAGE FUND: The principal accounting designation for all revenues received in the operation of the sewerage system.
SEWER TYPES AND APPURTENANCES:
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 (5') (1.5 m) outside the inner face of the building wall.
Building Sewer: That extension from the building drain to the public sewer or other place of disposal.
Combined Sewer: A sewer which is designed and intended to receive wastewater plus surface water, groundwater, and stormwater runoff drainage.
Public Sewer: Any sewer, the construction for which a permit from the Illinois environmental protection agency is required, excepting any sewer serving an industry or any sewer serving a single building or site designed or intended to serve more than fifteen (15) persons. A public sewer may lie within or without the geographical limits of the city and may or may not have been constructed with city funds.
Sanitary Sewer: A sewer that conveys sewage or industrial wastes, or a combination of both, and into which surface water, groundwater, and stormwater runoff, or unpolluted industrial wastes are not intentionally admitted.
Sewer: A pipe or conduit for conveying sewage or any other waste liquids, including groundwater, surface water, and stormwater runoff.
Sewerage: The system of sewers and appurtenances for the collection, transportation, and pumping of sewage.
Storm Sewer: A sewer that carries surface water, groundwater, and stormwater runoff drainage, but excludes sewage and industrial wastes other than unpolluted cooling water.
SHALL; MAY: "Shall" means mandatory; "may" means permissible.
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, the American Water Works Association, and the Water Pollution Control Federation.
STORMWATER RUNOFF: That portion of natural precipitation that is drained into the sewers.
USEFUL LIFE: The estimated period during which the collection system and/or treatment works will be operated, and shall be twenty (20) years from the date of startup of any wastewater facilities constructed with a state or federal grant.
USER TYPES OR CLASSES:
Industrial User: A. Any nongovernmental, nonresidential user of a publicly owned treatment works which discharges more than the equivalent of twenty five thousand (25,000) gallons per day (gpd) of sanitary wastes and which is identified in the "Standard Industrial Classification Manual" of the United States office of management and budget, as amended and supplemented, under one of 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 service.
5. Division I, services.
B. A user in the divisions listed in subsection A of this definition may be excluded if it is determined by the city that it will introduce primarily segregated domestic wastes or wastes from sanitary convenience.
Residential Or Commercial Or Nonindustrial User: Any user of the treatment works not classified as an industrial user or excluded as an industrial user as provided in this section.
WASTEWATER AND ITS CHARACTERISTICS:
Biochemical Oxygen Demand (BOD): The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five (5) days at twenty degrees Celsius (20°C), expressed in milligrams per liter.
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 from floatable oil 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.
Milligrams Per Liter: A unit of the concentration of water or wastewater constituent; and is 0.0001 gram of the constituent in one thousand milliliters (1,000 ml) of water. (The term has replaced the unit formerly used commonly, "parts per million", to which it is approximately equivalent, in reporting the results of water and wastewater analyses.)
ppm: Parts per million by weight.
pH: The logarithm (base-10) of the reciprocal of the hydrogen ion concentration expressed by one of the procedures outlined in standard methods.
Properly Shredded Garbage: The wastes from the preparation, cooking, and dispensing of food that have been shredded to such a degree that no particle in any public sewer is greater than one-half inch (1/2") (1.27 cm) in any dimension.
Sewage: Used interchangeably with "wastewater".
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 fifteen (15) minutes, more than five (5) times the average twenty four (24) hour concentration of flows during normal operation.
Suspended Solids: Solids that either float on the surface of 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 standard methods.)
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 benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
Wastewater: The spent water of a community. Wastewater may be a combination of the liquid and water carried waste from residences, commercial buildings, industrial plants, and institutions, together with any groundwater, surface water, and stormwater runoff that may be present.
WASTEWATER TREATMENT:
Pretreatment: The treatment of wastewater from sources before introduction into the wastewater treatment works.
Wastewater Facilities: The structures, equipment, and processes required to collect, carry away, and treat domestic and industrial wastes and to transport effluent to a watercourse.
Wastewater Treatment Works: An arrangement of devices and structures for treating wastewater, industrial wastes, and sludge; and is sometimes used interchangeably with "waste treatment plant", "wastewater treatment plant", or "pollution control plant".
WATER QUALITY STANDARDS: Those defined in the water pollution regulations promulgated by the Illinois pollution control board.
WATERCOURSE AND CONNECTIONS:
Natural Outlet: Any outlet into a watercourse, pond, ditch, lake, or other body of surface water or groundwater.
Watercourse: A channel in which a flow of water occurs, either continuously or intermittently. (2006 Code § 7-2-16)