For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
BOD (BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20ºC, expressed in milligrams per liter (mg/l).
COMMERCIAL AND INSTITUTIONAL CONTRIBUTOR. Any contributor not defined in definitions RESIDENTIAL CONTRIBUTOR and INDUSTRIAL CONTRIBUTOR in this section.
INDUSTRIAL CONTRIBUTOR. Any contributor to the city’s treatment works with an average daily waste volume greater than 10,000 gallons and a waste strength greater than or equal to 170 mg/l BOD and 185 mg/l suspended solids.
MEASUREMENTS and TESTS. Determined in accordance with the latest edition of Standard Methods for Examination of Water and Wastewater published by the American Public Health Association.
NORMAL DOMESTIC WASTEWATER. Wastewater that has a BOD concentration of less than 170 mg/l and a suspended solids concentration of less than 185 mg/l.
OPERATION AND MAINTENANCE. All expenditures during the useful life of the treatment works for materials, labor, utilities, and other items which are necessary for managing and maintaining the sewage works to achieve the capacity and performance for which such works were designed and constructed.
REPLACEMENT. Expenditures for obtaining and installing equipment, accessories, or appurtenances which are necessary during the useful 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 CONTRIBUTOR. Any contributor to the city’s treatment works whose lot, parcel of real estate, or building is used for domestic dwelling purposes only.
SS (SUSPENDED SOLIDS). Solids that either float on the surface of or are in suspension in water, sewage, or other liquids and which are removable by laboratory filtering.
TREATMENT WORKS. Any devices and systems for the storage and treatment of municipal, domestic, or industrial wastewater. These include intercepting sewers, outfall sewers, lift stations and treatment equipment and their appurtenances; extension improvements, remodeling, and additions; and site acquisition of the land that will be an integral part of the treatment process; or any other method or system for preventing, abating, reducing, storing, treating, separating, or disposing of municipal waste or industrial waste, including waste in combined stormwater and sanitary sewer systems.
USEFUL LIFE. The estimated period during which a treatment works will be operated.
USER CHARGE. The total wastewater service charge which is levied in a proportional and adequate manner for the cost of operation, maintenance, replacement, and debt retirement of bonded capital.
WATER METER. A water volume measuring and totalizing device furnished and/or installed by the city.
(Prior Code, § 52.20)