For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
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.
BUILDING OR HOUSE DRAIN. The part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste or 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.
BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal.
CHLORINE REQUIREMENT. The amount of chlorine in parts per million by weight which must be added to sewage to produce a specified residual chlorine content or to meet the requirements of some other objective in accordance with procedures set forth in Standard Methods.
COMBINED SEWER. A sewer receiving both surface runoff and sewage.
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 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 WASTES. The liquid wastes from industrial manufacturing processes, trade or business as distinct from sanitary sewage.
NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface or groundwater.
PERSON. Any individual, firm, company, association, society, corporation or group.
pH. The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
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 in which all owners of abutting properties have equal rights and is controlled by public authority.
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.
SANITARY SEWER. A sewer which carries sewage and to which storm, surface and groundwaters are not intentionally admitted.
SEWAGE. The spent water of a community (the preferred term is WASTEWATER).
SEWAGE TREATMENT PLANT. Any arrangement of devices and structures used for treating sewage.
SEWAGE WORKS. All facilities for collecting, pumping, treating and disposing of sewage.
SEWER. The pipe or conduit for carrying sewage.
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 editions of Standard Methods for the Examination Water, Sewage and Industrial Waste, published jointly by the American Public Health Association, the American Water Works Association and the Water Pollution Control Federation.
STORM DRAIN. A drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source (sometimes termed STORM SEWER).
SUPERINTENDENT. The Utilities Superintendent of the municipality, or his or her authorized deputy, agent or representative.
SURCHARGE. The assessment in addition to the service charge which is levied on those persons whose wastes are greater in strength than the concentration values established as representative of normal sewage.
SUSPENDED SOLIDS. Total suspended matter that either floats on the surface of or is in suspension in water, wastewater or other liquids and that is removable by laboratory filtering as prescribed in Standard Methods for the Examination of Water and Wastewater and referred to as nonfilterable residue.
TRAP. The vertical distance between the crown weir and the dip of the trap.
UNPOLLUTED WATERS. 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.
WATERCOURSE. A natural or artificial channel for the passage of water either continuously or intermittently.
(Prior Code, § 3-202)