Definitions for the County sewer rules

As used in this chapter, unless the context specifically indicates otherwise: “Accessible to a sewer” means having a sanitary sewer with laterals available to the lot. “B.O.D. (biochemical oxygen demand)” means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at twenty degrees centigrade, expressed in milligrams per liter by weight. “Building or house sewer” means that portion of the sewer line extending from a building to the public sewer or private disposal system. “Cesspool” means an individual wastewater system consisting of an excavation in the ground whose depth is greater than its widest surface dimension, which receives untreated wastewater and retains the organic matter and solids discharging therein, but permits the liquid to seep through the bottom or sides to gain access to the underground formation. “Commission” means the environmental management commission of the County. “Connection” means an opening in the public sewer to which the building sewer may be connected. “Director” means the director of the department of environmental management, or the director’s authorized representative. “Equivalent population” means the calculated population which would normally contribute the same amount of suspended solids, biochemical oxygen demand or volume of flow per day as the daily wastes discharged by an industrial or commercial establishment, using as standard basis pounds of suspended solids or biochemical oxygen demand and one hundred gallons per capita per day. “Extension” means the continuation of an existing public sewer through public or private property not owned, in whole or in part, by the applicant or owner of the particular property or subdivision to be served. “Gang cesspool” means a cesspool designed to accept sewage from two or more sources. “Garbage” means solid wastes from the preparation, cooking and dispensing of food and from the handling, storage and sale of produce. “Garbage, properly shredded” means food wastes that have been properly shredded to such a degree that all particles will be carried freely under normal flow conditions in public sewers. “Grease” means any material which is extractable from an acidified sample of a waste by hexane or other designated solvent and as determined by the appropriate procedure in Standard Methods. (Includes fats and oils.) “Grease traps” means a pretreatment device designed and installed to separate fats, oils, and grease from wastewater. “Industrial wastes” means the liquid wastes from industrial processes. “Infiltration” means water other than wastewater that enters a sewer system (including sewer service connections and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from inflow. “Inflow” means water other than wastewater that enters a sewer system (including sewer service connections) from sources such as, but not limited to, roof leaders, cellar drains, yard drains, area drains, drains from springs and swampy areas, manhole covers, cross connections between storm sewers and sanitary sewers, catch basins, cooling towers, storm waters, surface runoff, street wash waters, or drainage. Inflow does not include, and is distinguished from infiltration. “Lateral” means a side sewer from a public branch or main sewer to the property line to serve one or more lots. “Main” means a sewer to which several laterals or other branch sewer lines are connected. “Natural outlet” means any natural outlet into a watercourse, pond, ditch, lake or other body of surface or ground water. “pH” means the logarithm of the reciprocal of the weight of hydrogen ion in grams per liter of solution. “Public sewer” means a sewer system, including a cesspool and a gang cesspool system, controlled by the County. “Sanitary sewer” means a sewer which carries sewage and to which storm and surface waters and drainage are not intentionally admitted. “Sewage” means a combination of the water-carried wastes from residences, business buildings, institutions and industrial establishments. “Sewage treatment plant” means any arrangement of devices and structures used for treating sewage. “Sewage works,” “sewer system,” or “sewer,” means all public facilities for collecting, pumping, treating and disposing of sewage. “Subdivision” means a division of a piece of property into two or more lots. SEWERS § 21-2 “Suspended solids” means solids that are in suspension in sewage or waste waters, and which are removable by laboratory filtering. “Unoccupied unit” means a unit that is not occupied but has accessibility to a sewer, plumbing fixtures located on it, and currently receives a water bill.