§ 51.01 DEFINITIONS.
   Unless the context specifically indicates otherwise, the meaning of terms used in this ordinance shall be as follows.
   BOD. Biochemical oxygen demand which is defined as the quantity of oxygen used in the biochemical oxidation of organic matter in five days at 20°C, determined by standard laboratory test procedures and expressed in mg/l.
   BUILDING DRAIN. The part of the lowest piping of a drainage system which receives the discharge from soil, waste, and other drainage pipes inside the walls of a building and conveys it to the building sewer or other approved point of discharge, beginning five feet (1.4 meters) 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.
   CONTROL MANHOLE. A structure specifically designed and constructed for sampling and metering industrial wastes discharged to a public sewer.
   COUNTY. The County of Lake, a political subdivision of the State of Illinois.
   EASEMENT. An acquired legal right for the specific use of land owned by others.
   FEDERAL ACT. The Federal Water Pollution Control Act (33 U.S.C. §§ 1251 et seq.) as amended by the Federal Water Pollution Control Act of Amendments of 1972 (Public Law 92-500 and Public Law 93-243) and the Clean Water Act of 1977 (Public Law 95-217).
   GARBAGE. Solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage and sale of produce.
   INDUSTRIAL USER.
      (1)   (a)   For the purpose of industrial cost recovery, any nongovernmental, nonresidential user-of publicly owned sewerage works which discharges more than the equivalent of 25,000 gallons per day (gpd) of sanitary wastes and which is identified in the Standard Industrial Classification Manual, 1972, 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 Services
            5.   Division I - Services
         (b)   In determining the amount of a user's discharge for purposes of industrial cost recovery, the County will exclude domestic wastes or discharges from sanitary conveniences. After applying the sanitary waste exclusion of this paragraph, discharges in the above divisions that have a volume exceeding 25,000 gpd or the weight of BOD or suspended solids equivalent to that weight found in 25,000 gpd of sanitary waste are considered industrial users. Sanitary wastes, for purposes of this calculation of equivalency, are wastes containing 0.17 pounds of BOD and 0.20 pounds of suspended solids per 100 gallons of wastewater per day.
      (2)   Any nongovernmental user of a publicly owned treatment works which discharges wastewater to the treatment works which contains toxic pollutants or poisonous solids, liquids, or gases in sufficient quantity either singly or by interaction with other wastes, to contaminate the sludge of any municipal systems, or to injure or to interfere with any sewage treatment process, or which constitutes a hazard to humans or animals, creates a public nuisance, or creates any hazard in or has an adverse effect on the waters receiving any discharge from the treatment works.
      (3)   For the purpose of user charges, industrial users shall include manufacturing activities involving the mechanical or chemical transformation of materials or substances into other products. These activities occur in establishments usually described as plants, factories, or mills, and characteristically use power driven machines and material handling equipment.
   INDUSTRIAL WASTE. The wastewater discharged, permitted to flow, or escaping from any industrial, manufacturing, commercial or business establishment or process, or from the development, recovery of processing of any natural recovery of processing of any natural resource as distinct from employees’ waste or wastewater from-sanitary conveniences.
   MAJOR CONTRIBUTING INDUSTRY. An industrial user that has a flow of 50,000 gallons or more per average work day, or has a flow greater than ten percent of the flow carried by the sewerage works receiving the waste, or has in its waste, a toxic pollutant in toxic amounts as defined in standards issued under § 307(a) of Federal Act, or 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 a combination with other contributing industries, on that treatment works or upon the quality of effluent from that tre*atment works.
   mg/l. Milligrams per liter.
   NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface water.
   NPDES PERMIT. Any permit or equivalent document to regulate the discharge of pollutants pursuant to § 402 of the Federal Act.
   ORDINANCE. This ordinance.
   PERSON. Any and all persons, natural or artificial including any individual, firm, company, public or private corporation, association, society, institution, enterprise, governmental agency or other entity.
   pH. The logarithm (base 10) of the reciprocal of the hydrogen-ion concentration expressed in gram molecular weight (moles) per liter.
   PHOSPHORUS. The total concentration of orthophos-phate, polyphosphates and organic phosphorus compounds in wastewater, the quantity of which is determined by standard laboratory test procedures and expressed in mg/l of elemental phosphorus.
   POPULATION EQUIVALENT. A term used to evaluate the impact of industrial or other wastes on a treatment works or stream. One population equivalent is 100 gallons of sewage per day, containing 0.17 pounds of BOD arid 0.20 pounds of suspended solids.
   PRETREATMENT. The treatment of wastewaters from sources before discharge into the public sewer.
   PROPERLY SHREDDED GARBAGE. Garbage 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 (1.27 centimeters) in any dimension.
   PUBLIC SEWER. A sewer in which all owners of abutting properties have equal rights of connection and use, and is operated, maintained and controlled by the County or other public agencies.
   RESIDENTIAL, COMMERCIAL, OR NON-INDUSTRIAL USER. Any user of the sewerage works not classified as an industrial user or excluded as an industrial user.
   RESIDENTIAL CUSTOMER EQUIVALENT. A term used as a basis of billing for sewage collection and treatment service which is equivalent to a single-family residential user with an average sewage load of two and one-half times that of a “Population Equivalent”.
   SANITARY SEWER. A sewer that conveys sewage and polluted industrial wastes, and to which stormwater, surface drainage, groundwater or unpolluted wastewater are not intentionally admitted.
   SEWAGE. A combination of the wastewater from residential, commercial, industrial and institutional buildings together with such groundwater infiltration and surface water inflow that may be in the sewers.
   SEWAGE TREATMENT PLANT. An arrangement of devices, structures and processes for the treating and disposing of sewage.
   SEWERAGE SYSTEM. All facilities of the county for collecting, pumping, treating and disposing of sewage and industrial wastes.
   SHALL. Mandatory; MAY means permissive.
   SLUG. Any discharge of sewage, industrial waste or other wastewater 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 quantity during normal operating conditions.
   STATE ACT. The Illinois Environmental Protection Act effective July 1, 1970 (Ill. Rev. Stat. Ch. 111-1/2, §§ 1001-1051).
   STORM SEWER or STORM DRAIN. A sewer that conveys stormwater runoff and surface water drainage, but excludes sewage and polluted industrial wastes.
   STORMWATER RUNOFF. That portion of precipitation which is not absorbed into the ground and which is drained from the ground surface to a natural outlet or watercourse.
   SUPERINTENDENT. The Superintendent of the Department of Public Works or his duly authorized deputy or representative.
   SUSPENDED SOLIDS. Solids that either float on the surface of, or are in suspension in water, sewage, industrial wastes, or other wastewaters; the quantity of which is determined by standard laboratory filtering test procedures and referred to as nonfilterable residue and expressed in mg/l.
   UNPOLLUTED WASTEWATER. Wastewater that would not cause any violation of water quality standards of the Water Pollution Regulations of Illinois when discharged to a natural outlet or watercourse.
   WASTEWATER. The wastewater from any domestic, commercial, industrial and institutional uses.
   WATERCOURSE. Any stream, creek, brook, branch, natural or artificial depression, slough, gulch, ditch, reservoir, lake, pond, or other natural or manmade drainageway in or into which stormwater runoff and surface water drainage flow either continuously or intermittently.
(1977 Code, §§ 4:2-1, 4:3-4) (Ord. 1979.04.43, passed 4-10-1979; Ord. 1984.10.43, passed 10-9-1984; Ord. 1988.02.35, passed 2-9-1988)