§ 118-26. Definitions.
The following words, terms and phrases, when used in sections 118-26—118-59, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:
Administrator means the administrator of the U.S. Environmental Protection Agency.
Approving authority means the director of public works of the city.
Basic user charge means the basic assessment levied on all users of the public sewerage system.
BOD (biochemical oxygen demand) means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures in five days at 20 degrees Centigrade, expressed in milligrams per liter.
Building drain means 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.
Building sewer means the extension from the building drain to the public sewer or other place of disposal.
Combined sewer means a sewer which is designed and intended to receive wastewater, storm, surface and groundwater drainage.
Compatible pollutant means biochemical oxygen demand, suspended solids, pH, and fecal coliform bacteria, plus additional pollutants identified in the NPDES permit if the treatment works were designed to treat such pollutants, and in fact do remove such pollutants to a substantial degree. The term substantial degree is not subject to precise definition, but generally contemplates removal on the order of 80 percent or greater. Minor incidental removals on the order of ten to 30 percent are not considered substantial. Examples of the additional pollutants that may be considered compatible include:
(1)
Chemical oxygen demand;
(2)
Total organic carbon;
(3)
Phosphorus and phosphorus compounds;
(4)
Nitrogen and nitrogen compounds; and
(5)
Fats, oils and greases of animal or vegetable origin (except as prohibited where these materials would interfere with the operation of the treatment works).
Control manhole means 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.
Debt service charge means the amount to be paid each billing period for payment of interest, principal and coverage of loan, bond, etc., outstanding and shall be computed by dividing the annual debt service by the number of users connected to the wastewater facilities.
Director means the director of the state environmental protection agency (IEPA).
Easement means an acquired legal right for the specific use of land owned by others.
Effluent criteria means and is defined in any applicable NPDES permit.
Federal Act means the Federal Water Pollution Control Act (33 USC 1251 et seq.), as amended by the Federal Water Pollution Control Act Amendments of 1972 (Pub. L. 92-500).
Federal grant means 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 Federal Act and implementing regulations.
Floatable oil means 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 means solid waste from the domestic and commercial preparation, cooking and dispensing of food and from the handling, storage and sale of produce.
Incompatible pollutant means any pollutant that is not defined as a compatible pollutant, including nonbiodegradable dissolved solids.
Industrial user means any nongovernmental user of publicly owned treatment works identified in the Standard Industrial Classifications 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; and
(5)
Division I. Services.
A user in such divisions may be excluded if it is determined by the director of public works that it will introduce primarily segregated domestic wastes or wastes from sanitary conveniences.
Industrial waste means 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.
Industrial waste connection means any connection where there is a process waste discharged into the sewerage system in addition to the normal waste from a commercial or residential connection.
Infiltration means the water entering a sewerage system, including building drains and sewers, from the ground, through such means as, but not limited to, defective pipes, pipe joints, connections or manhole walls. (Infiltration does not include and is distinguished from inflow.)
Infiltration/inflow means the total of water from both infiltration and inflow without distinguishing the source.
Inflow means the water discharge into a sewerage system, including building drains and sewers, from such sources as, but not limited to, roof leaders, cellars, yard and area drains, foundation drains, unpolluted cooling water discharges, drains from springs and swampy areas, manhole covers, cross connections from storm sewers, and combined sewers, catchbasins, stormwaters, surface runoff, street wash waters or drainage. (Inflow does not include and is distinguished from infiltration.)
Major contributing industry means an industrial user of the publicly owned treatment works to whom any of the following applies:
(1)
Has a flow of 50,000 gallons or more per average workday;
(2)
Has a flow greater than ten percent 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 Federal Act; or
(4)
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.
Milligrams per liter (mg/l) means a unit of the concentration of water or wastewater constituent. It is 0.001 gram of the constituent in 1,000 milliliters (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 means any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface water or groundwater.
NPDES permit means any permit or equivalent document or requirement 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 Federal Act.
Owner means owner or occupant.
Person means 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.
pH means the logarithm (base ten) of the reciprocal of the hydrogen-ion concentration expressed by one of the procedures outlined in "Standard Methods."
Population equivalent means the term used to evaluate the impact of industrial or other waste on a treatment works or stream. One population equivalent is 140 gallons of sewage per capita, per day, containing 0.17 pounds of BOD and 0.20 pounds of suspended solids.
ppm means parts per million by weight.
Pretreatment means the treatment of wastewaters from sources before introduction into the wastewater treatment works.
Properly shredded garbage means the waste 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 one-half inch in any dimension.
Public sewer means a sewer provided by or subject to the jurisdiction of the city, also including sewers within or without the city boundaries that serve one or more persons and ultimately discharge into the city sanitary (or combined) sewerage system, even though those sewers may not have been constructed with city funds.
Replacement means expenditures for obtaining and installing equipment, accessories or appurtenances that 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 or commercial user or nonindustrial user means any user of the treatment works not classified as an industrial user or excluded as an industrial user as provided for in this subsection.
Sanitary sewer means a sewer that conveys sewage or industrial wastes, or a combination of both, and into which stormwaters, surface waters and groundwaters or unpolluted industrial wastes are not intentionally admitted.
Sewage means and is used interchangeably with wastewater.
Sewer means a pipe or conduit for conveying sewage or any other waste liquids, including stormwater, surface water and groundwater drainage.
Sewerage fund is the principal accounting designation for all revenues received in the operation of the sewerage system.
Sewerage system means the system of sewers and appurtenances for the collection, transportation and pumping of sewage.
Slug means 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 of flows during normal operation.
Standard methods means 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 Environment Federation.
State act means the state Anti-Pollution Bond Act (30 ILCS 405/1 et seq.).
State grant means the state participation in the financing of the construction of treatment works as provided for by the state Anti-Pollution Bond Act and for making such grants as filed with the secretary of state.
Storm sewer means a sewer that carries stormwater, surface water and groundwater drainage, but excludes sewage and industrial wastes other than unpolluted cooling water.
Stormwater runoff means that portion of the precipitation that is drained into the sewers.
Surcharge means the assessment in addition to the basic user charge that is levied on those persons whose wastes are greater in strength than the applicable concentration values established in this article.
Suspended solids means 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 means 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 benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
Useful life means the estimated period during which the collection system and/or treatment works will be operated and shall be 30 years from the date of start-up of any wastewater facilities constructed with a state grant.
User charge means a charge levied on users of treatment works for the cost of operation and maintenance.
User class means the type of user either "residential or commercial" (nonindustrial) or "industrial" as defined in this section.
Wastewater means the spent water of a community. From this standpoint of course, 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 stormwater that may be present.
Wastewater facilities means 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 means the charge per month levied on all users of the wastewater facilities. The service charge shall be computed as outlined in this article and shall consist of the total of the basic user charge, the debt service charge and a surcharge, if applicable.
Wastewater treatment works means 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."
Water quality standards means and is defined in the water pollution regulations of the state.
Watercourse means a channel in which a flow of water occurs, either continuously or intermittently.
(Code 1978, § 1040.20; Ord. No. 1768-10-78, 10-17-1978)