Unless the context specifically indicates otherwise, the meaning of terms used in this chapter shall be as the follows.
APPROVING AUTHORITY. The Wastewater Treatment Committee or its duly-authorized agent or representative.
B.O.D. (BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in 5 days at 20°C, expressed in milligrams per liter (mg/l). The laboratory determinations shall be made in accordance with “Standard Methods”.
BUILDING DRAIN. That part of the lowest horizontal piping of drainage system that receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer, beginning 5 feet (1.5 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.
CATEGORY A. Those sanitary sewer users who discharge normal domestic strength wastewater with concentrations no greater than 290 mg/1 of B.O.D., 340 mg/1 of suspended solids, 35 mg/1 of nitrogen, and 7 mg/1 of phosphorus.
CATEGORY B. Those sanitary sewer users who discharge wastewater with concentrations in excess of 290 mg/1 of B.O.D., 340 mg/1 of suspended solids, 35 mg/1 of nitrogen, and 7 mg/1 of phosphorus. Users whose wastewater exceeds the concentration for any one of these parameters shall be in Category B.
CHLORINE REQUIREMENT. The amount of chlorine, in mg/l, that must be added to sewage to produce a residual chlorine as specified in the Wisconsin Pollutant Discharge Elimination System (WPDES) permit.
CITY. The City of Medford, Wisconsin.
COMBINED SEWER. A sewer receiving both surface runoff and sewage.
COMPATIBLE POLLUTANTS. B.O.D, suspended solids, phosphorus, nitrogen, PH, or fecal coliform bacteria, plus additional pollutants identified
in the municipality’s WPDES permit for its wastewater treatment facility; provided that the facility is designed to treat these additional pollutants, and, in fact, does remove them to a substantial degree.
DOMESTIC WASTES. See “normal sewage”.
EASEMENT. An acquired legal right for the specified use of land owned by others.
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 oil 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 WASTE. Any solid, liquid or gaseous substance discharged, permitted to flow or escaping from any industrial, manufacturing, commercial or business establishment or process, or from the development, recovery or processing of any natural resources.
MAY. This term is permissive.
MUNICIPALITY. The City of Medford.
NATURAL OUTLET. Any outlet into a water course, pond, ditch, lake or other body of surface or groundwater.
NITROGEN. Kjeldahl nitrogen that is the sum of organic nitrogen and ammonia nitrogen.
NORMAL DOMESTIC STRENGTH WASTEWATER. Wastewater with concentrations no greater than 290 mg/1 of B.O.D., 340 mg/1 of suspended solids, 35 mg/1 of nitrogen, and 7 mg/1 of phosphorus.
NORMAL SEWAGE. Sanitary sewage or other wastes in which B.O.D. or suspended solids concentrations do not exceed normal concentrations.
OPERATION AND MAINTENANCE COSTS. Includes all costs associated with the operation and maintenance of the wastewater treatment facilities, including administration and replacement costs, all as determined from time to time by the municipality.
PERSON. Any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, governmental agency or other entity.
pH. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed in moles per liter as determined by “Standard Methods”.
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 ½ inch (1.27 centimeters) in any dimension.
PUBLIC SEWER. A sewer provided by or subject to the jurisdiction of the City. It shall also include sewers within or outside the City boundaries that serve 1 or more persons and ultimately discharge into the City sewage system, even though these sewers may not have been constructed with City funds.
REPLACEMENT COSTS. Expenditures for obtaining and installing equipment, accessories, or appurtenances that are necessary during the useful life of a wastewater treatment facility to maintain its capacity and performance for which it was designed and constructed. Operation and maintenance costs include replacement costs.
SANITARY SEWAGE. A combination of liquid and water-carried wastes discharged from toilets and/or sanitary plumbing facilities.
SANITARY SEWER. A sewer that carries sewage to which storm, surface, and groundwaters are not intentionally admitted.
SEWAGE. A combination of the water-carried wastes from residences, business buildings, institutions, and industrial establishments, together with such ground, surface, and storm waters as may be present.
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 SERVICE CHARGE. A charge leveled on users of the wastewater treatment facilities for the payment of operation and maintenance expenses, debt service costs, and other expenses or obligations of such facilities.
SEWERS. All facilities for collecting, pumping, treating and disposing of sewage.
SHALL. This term is mandatory.
SLUG. Any discharge of water, sewage, or industrial waste that in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes more than 5 times the average 24-hour concentration or flows during normal operations.
STANDARD METHODS. The examination and analytical procedures set forth in the most recent edition of “Standard Methods for the Examination of Water and Sewage and Industrial Wastes”, published jointly by the American Public Health Association, the American Water Works Association and Federation of Sewage and Industrial Wastes Associations.
STORM DRAIN or STORM SEWER. A sewer that carries storm and surface waters and drainage,but excludes sewage and industrial wastes, other than unpolluted cooling water.
SUPERINTENDENT. The Superintendent of Medford Wastewater Utility of the City, or his authorized deputy, agent or representative.
SUSPENDED SOLIDS. Solids that either float on the surface of, or are in suspension of water, sewage, or industrial waste, and that are removable by laboratory filtration device. The laboratory determinations shall be made in accordance with “Standard Methods”.
UNPOLLUTED WATER. Water quality equal to or better than the effluent of the wastewater treatment facilities or water that would not cause violation of receiving water quality standards and would not benefit by discharge to the sanitary sewers and wastewater treatment facilities.
UTILITY. The Medford Sewer Utility.
WASTEWATER. The spent water of a community or person. 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 storm water that may be present.
WASTEWATER COLLECTION FACILITIES or WASTEWATER COLLECTION SYSTEM. The structures and equipment required to collect and carry wastewater.
WASTEWATER TREATMENT FACILITY. An arrangement of devices and structures for treating wastewater and sludge. Also referred to as a wastewater treatment plant.
WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently.
WISCONSIN POLLUTANT DISCHARGE ELIMINATION SYSTEM (WPDES) PERMIT. A document issued by the State of Wisconsin that establishes effluent limitations and monitoring requirements for the municipal wastewater treatment facility.
(Ord. 1077, passed 10-18-22)