For the purpose of this subchapter, 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 City Council.
BASIC USER CHARGE. The basic assessment levied on all users of the public sewer system.
BOD (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 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 (one and one-half 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.
CITY. The City of Nashville.
COMBINED SEWER. A sewer which is designed and intended to receive wastewater, storm, surface, and groundwater drainage.
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.
DEBT SERVICE CHARGE. The amount to be paid each billing period for payment of interests, principal, and coverage of loans, bonds, and the like, outstanding, and shall be computed by dividing the annual debt service by the number of users connected to the wastewater facilities.
DIRECTOR. The Director of the State Environmental Protection Agency.
EASEMENT. An acquired legal right for the specific use of land owned by others.
EFFLUENT CRITERIA. Defined in any applicable NPDES permit.
FEDERAL ACT. The Federal Water Pollution Control Act (33 U.S.C. §§ 1251 et seq.), as amended by the Federal Water Pollution Control Act Amendments of 1972 (Pub. Law No. 92-500) and (Pub. Law No. 93-243).
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 Federal Act, and implementing regulations.
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.
INDUSTRIAL USER.
(1) Any non-governmental user of publicly- owned treatment works identified in the Standard Industrial Classification Manual, 1972, Office of Management and Budget, as amended and supplemented, under the following divisions:
(a) Division A: Agriculture, Forestry and Fishing;
(b) Division B: Mining;
(c) Division D: Manufacturing;
(d) Division E: Transportation, Communications, Electric, Gas, and Sanitary Services; and
(e) Division I: Services.
(2) A user in the divisions listed in this definition may be excluded if it is determined by the city that it will introduce primarily segregated domestic wastes or wastes from sanitary conveniences.
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:
(1) Has a flow of 50,000 gallons or more per average workday;
(2) Has a flow greater than 10% 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 issue under 33 U.S.C. § 1317(a); and
(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). 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, lake, or other body of surface water or groundwater.
NPDES PERMIT. 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 33 U.S.C. § 1342.
ORDINANCE. The ordinance codified in this subchapter.
PERSON. 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. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed by one of the procedures outlined in standard methods.
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 BOD and 0.20 pounds of suspended solids.
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 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 (1.27 centimeters) in any dimension.
PUBLIC SEWER. A sewer provided by or subject to the jurisdiction of the city. It shall also 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.
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.
RESIDENTIAL, COMMERCIAL, OR NON-INDUSTRIAL USER. Any user of the treatment works not classified as an industrial user or excluded as an industrial user as provided for in this section.
SANITARY SEWER. A sewer that conveys sewage or industrial wastes or a combination of both, and into which storm, surface, and groundwaters or unpolluted industrial wastes are not intentionally admitted.
SEWAGE. Used interchangeably with WASTEWATER.
SEWER. A pipe or conduit for conveying sewage or any other waste liquids, including storm, surface, and groundwater drainage.
SEWERAGE. The system of sewers and appurtenances for the collection, transportation, and pumping of sewage.
SEWERAGE FUND. The principal accounting designation for all revenues received in the operation of the sewerage system.
SHALL. Is mandatory; MAY is permissible.
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 flow during normal operation.
STANDARD METHODS. The examination and analytical procedures set forth in the most recent edition of Standards 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.
STATE ACT. The Illinois Anti-Pollution Bond Act of 1970.
STATE GRANT. 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. A sewer that carries storm, surface, and groundwater drainage, but excludes sewage and industrial wastes other than unpolluted cooling water.
STORMWATER RUNOFF. That portion of the precipitation that is drained into the sewers.
SUSPENDED SOLIDS (SS). 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 benefitted by discharge to the sanitary sewers and wastewater treatment facilities provided.
USEFUL LIFE. 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. A charge levied on users of treatment works for the cost of operation and maintenance.
USER CLASS. The type of user, either residential or commercial (nonindustrial) or industrial, as defined in this section.
WASTEWATER. 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. 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 per month levied on all users of the wastewater facilities. The service charge shall be computed as outlined in § 50.085, and shall consist of the total or the basic user charge, the debt service charge, and a surcharge, if applicable.
WASTEWATER TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes, and sludge and sometimes is 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.
WATER QUALITY STANDARDS. Defined in the Water Pollution Regulations of Illinois.
(1978 Code, § 13.08.010) (Ord. 503, passed - -1977)