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 parts per million by weight.
BUILDING OR HOUSE DRAIN. The part of the lowest horizontal piping of a house or building drainage system which receives the discharge from soil, waste or other drainage pipes inside the walls of any building or house.
BUILDING OR HOUSE SEWER. The part of a house or building drainage system extending from the house or building drain to its connection with the main sewer.
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. 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. The animal and vegetable waste resulting from the handling, preparation, cooking and serving of foods.
INDUSTRIAL WASTES. The liquid wastes from industrial manufacturing processes, trade or business as distinct from sanitary sewage.
LOCAL VENTILATING PIPE. Any pipe through which foul air is removed from a room or fixture.
MAY. The act referred to is permissive.
NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface or groundwater.
NORMAL SEWAGE. Sewage not exceeding maximum tolerance of contamination of 300 milligrams per liter BOD or 350 milligrams per liter of suspended solids.
PARTS PER MILLION. A weight-to-weight ratio; the PARTS PER MILLION value multiplied by the factor 8.345 shall be equivalent to pounds per million gallons of water.
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. Shredding to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers with no particle larger than one-half inch in diameter.
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.
SERVICE CHARGE. The basic assessment levied on all users of the public sewer system whose waste does not exceed in strength the concentration values established a representative of normal sewage.
SEWER. A pipe or conduit for carrying sewage.
SEWERAGE. The system of sewers and appurtenances for the collection, transportation and pumping of sewage and industrial wastes.
SEWER SYSTEM. All facilities for collecting, pumping, treating and disposing of sewage.
SHALL. The act referred to is mandatory.
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 flows during normal operation.
SOIL PIPE. Any pipe which conveys the discharge of water closets with or without the discharge from other fixtures to the house or building drain.
STANDARD METHODS. The examination and analytical procedures set forth in the most recent editions of Standard Methods for the Examination of 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 SEWER. A sewer which carries storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.
SUPERINTENDENT. The Utilities Superintendent of the city, or his or her authorized deputy, agent or representative.
SUSPENDED SOLIDS. Solids that either float on the surface of, or are in suspension in water, sewage or other liquids and are removable by filtering.
TRAP. A fitting or device so constructed as to prevent the passage of air or gas through a pipe without materially affecting the flow of sewage or waste through it.
TRAP SEAL. The vertical distance between the crown weir and the dip of the trap.
UNPOLLUTED WATERS. 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 benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
VENT PIPE. Any pipe provided to ventilate a house or building drainage system and to prevent trap siphonage and back pressure.
WASTE PIPE. Any pipe which receives the discharge of any fixture, except water closets, and conveys the same to the house drain, soil pipe or waste stack.
WASTEWATER. The spent water of a community. From the standpoint of source, 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 dispose of the effluent.
WASTEWATER TREATMENT WORKS. An arrangement of devices and structure for treating wastewater, industrial wastes and sludge. Sometimes used as synonymous with WASTE TREATMENT PLANT or WASTEWATER TREATMENT PLANT or WATER POLLUTION CONTROL PLANT.
WATERCOURSE. A natural or artificial channel for the passage of water either continuously or intermittently.
(Prior Code, § 3-202)