§ 2.00 DEFINITIONS.

   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.

§ 2.01.   BIOCHEMICAL OXYGEN DEMAND (BOD). 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.

§ 2.02.   BUILDING DRAIN. The part of the lowest horizontal 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, beginning five feet (one and one-half meters) outside the inner face of the building wall.

§ 2.03.   BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal; also called HOUSE CONNECTION.

§ 2.04.   COMBINED SEWER. A sewer intended to receive both wastewater and storm or surface water.

§ 2.05.   EASEMENT. An acquired legal right for the specific use of land owned by others.

§ 2.06.   GARBAGE. The animal and vegetable waste resulting from the handling, preparation, cooking and serving of foods.

§ 2.07.   INDUSTRIAL WASTES. The wastewater from industrial processes, trade or business, including businesses engaged in the preparation, cooking and dispensing of food or food products as distinct from domestic or sanitary wastes.

§ 2.08.   MAY. Is permissive. (See SHALL, § 2.19 of this chapter.)

§ 2.09.   NATURAL OUTLET. Any outlet, including storm sewers and combined sewer overflows into a watercourse, pond, ditch, lake or other body surface or groundwater.

§ 2.10.   OIL, FAT AND GREASE. That which is in a free, floating or emulsified state as determined by laboratory procedure and expressed in milligrams per liter. A wastewater shall be considered free of FLOATABLE FAT if it is properly pretreated and the wastewater does not interfere with the collection system.

§ 2.11.   PERSON. Any individual, firm, company, association, society, corporation, group, state agencies or political subdivisions thereof.

§ 2.12.   pH. The reciprocal of the logarithm of the hydrogen-ion concentration. The concentration is the weight of hydrogen-ions, in grams, per liter of solution. Neutral water shall be considered as having a pH value of seven and hydrogen-ion concentration of 10-7.

§ 2.13.   PROPERLY SHREDDED GARBAGE. 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 that one-half inch (1.27 centimeters) in any dimension.

§ 2.14.   PUBLIC DIRECTOR. The Public Works Director of the City of Eldridge, Iowa, or his or her authorized deputy, agent or representative or an official so authorized and designated by the City Council.

§ 2.15.   PUBLIC SEWER. A common sewer controlled by a governmental agency of public utility. This shall include sewer mains and manholes.

§ 2.16.   SANITARY SEWER. A sewer that carries liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions, together with minor quantities of ground, storm and surface waters that are not admitted intentionally.

§ 2.17.   SEWAGE. The spent water of a community. The preferred term is WASTEWATER. (See § 2.24 of this chapter.)

§ 2.18.   SEWER. A pipe or conduit that carries wastewater or drainage water.

§ 2.19.   SHALL. Is mandatory. (See MAY, § 2.08 of this chapter.)

§ 2.20.   SLUG. Any discharge of water or 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 four or five times the average 24-hour concentration or flows during normal operation and shall adversely affect the collection system and/or performance of the wastewater treatment works.

§ 2.21.   STORM DRAIN (sometimes termed STORM SEWER). A drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source.

§ 2.22.   SUSPENDED SOLIDS. Total suspended matter that either floats on the surface, or is in suspension in, water, wastewater or other liquids, and that is removable by laboratory filtering, referred to as nonfilterable residue and expressed in milligrams per liter.

§ 2.23.   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.

§ 2.24.   WASTEWATER. The spent water of a community. From the standpoint of source, it may be a combination of liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions, together with any groundwater, surface water and storm water that may be present.

§ 2.25.   WASTEWATER FACILITIES. The structures, equipment and processes required to collect, carry away and treat domestic and industrial wastes and dispose of the effluent.

§ 2.26.   WASTEWATER TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes and sludge. Sometimes used as synonymous with WASTE TREATMENT PLANT or WASTEWATER TREATMENT PLANT or WATER POLLUTION CONTROL PLANT.

§ 2.27.   WATERCOURSE. A natural or artificial channel for the passage of water either continually or intermittently.