As used in this chapter:

"Approving authority" means the director of public works or duly-authorized representative in the case of sanitary sewers; the director of public works in the case of storm sewers, or their duly-authorized deputy, agent or representative.

"BOD" (denoting biochemical oxygen demand) means the quantity of oxygen utilized in the biochemical oxidation of organic matter in five days at twenty (20) degrees C., expressed as milligrams per liter (mg/l). Quantitative determination of BOD shall be made in accordance with procedures set forth in standard methods.

"Building drain" means that part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste, and 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 drain" also means the extension from the building drain to the public sewer or other place of disposal, also called house connection.

"Capital costs" means depreciation expense and return on net investment rate base as established by the Public Service Commission of Wisconsin.

"Chlorine requirement" means the amount of chlorine, in mg/l, which must be added to sewage to produce a specified residual chlorine content determined in accordance with procedures set forth in standard methods.

"City" means the city of Juneau, by which the Juneau utilities commission is governed.

"Combined sewer" means a sewer intended to receive both wastewater and storm or surface water.

"Compatible pollutants" means biochemical oxygen demand, suspended solids, phosphorus, pH or fecal coliform bacteria, plus additional pollutants identified in the WPDES permit for the publicly owned treatment works receiving the pollutants, if such works were designed to treat such additional pollutants, and in fact does remove such pollutants to a substantial degree.

"Easement" means an acquired legal right for the specified use of land owned by others.

"Floatable oil" means 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" means the residue from the preparation, cooking and dispensing of food, and from the handling, storage and sale of food products and produce.

"Grantee" means the city of Juneau.

"Ground garbage" means the residue from the preparation, cooking and dispensing of food that has been shredded to such a degree that all particles will be carried freely in suspension under the flow conditions normally prevailing in public sewers with no particle greater than one-half inch in any dimension.

"Incompatible pollutants" means wastewater with pollutants that will adversely affect or disrupt the quality of wastewater treatment if discharged to a wastewater treatment facility.

1. Any nongovernmental, nonresidential use of publicly owned treatment works which discharges more than the equivalent of twenty-five thousand (25,000) gallons per day (gpd) of sanitary wastes and which is identified in the Standard Industrial Classification Manual, 1972, Office of Management and Budget, as amended and supplemented under one of the following divisions:

Division A--Agriculture, Forestry, Fishing

Division B--Mining

Division D--Manufacturing

Division E--Transportation, Communications, Electric, Gas and Sanitary Services

Division I--Services

a. Grantee may exclude domestic wastes or discharges from sanitary conveniences.

b. After applying the sanitary waste exclusion, discharges in the above division that have a volume exceeding twenty-five thousand (25,000) gpd or the weight of BOD, suspended solids, or phosphorus equivalent to that weight found in twenty-five thousand (25,000) gpd of sanitary waste are considered industrial users. Sanitary wastes for purposes of this calculation of equivalency are the wastes discharged from residential users;

2. A user which discharges any wastewater containing toxic pollutants or which has any other adverse effect on the treatment works;

3. A commercial user of an EPA funded individual system.

"Natural outlet" means an outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake, or other body of surface water or groundwaters.

"Normal domestic strength wastewater" means wastewater with concentrations of BOD no greater than two hundred fifty (250) mg/l, suspended solids no greater than two hundred fifty (250) mg/l.

"Operation and maintenance costs" includes all costs associated with the operation and maintenance of the wastewater collection and treatment facilities, as well as the costs associated with periodic equipment replacement necessary for maintaining capacity and performance of wastewater collection and treatment facilities.

"Parts per million" is a weight-to-weight ratio; the parts per million value multiplied by the factor 8.34 shall be equivalent to pounds per million gallons of water.

"Person" means any and all persons, including any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, governmental agency, or other entity.

"pH" means the logarithm of the reciprocal of the hydrogen-ion concentration. The concentration is the weight of hydrogen-ions, in grams, per liter of solution. Neutral water, for example, has a pH value of 7 and a hydrogen-ion concentration of 10.

"Phosphorous" means a nonmetallic element, symbol P, atomic number 15, atomic weight 30.98 used to manufacture phosphoric acid, in phosphor bronzes, incendiaries, pyrotechnics, matches, and rat poisons. The white (or yellow) allotrope is a soft waxy solid melting at 44.5°C, is soluble in carbon disulfide, insoluble in water and alcohol, and is poisonous and self-igniting in air. The red allotrope is an amorphous powder subliming at 416°C, igniting at 260°C, is insoluble in all solvents, and is nonpoisonous. The black allotrope comprises lustrous crystals similar to graphite, and is insoluble in most solvents.

"Public sewer" means any sewer provided by or subject to the jurisdiction of the city of Juneau. It includes sewers within or outside the city boundaries that serve one or more persons and ultimately discharge into the city sanitary sewer system, even though those sewers may not have been constructed with city funds.

"Replacement costs" means 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. Operation and maintenance costs include replacement costs.

"Sanitary sewage" means a combination of liquid and water-carried wastes discharged from toilets and/or sanitary plumbing facilities, together with such ground, surface and stormwaters as may be present.

"Sanitary sewer" means a sewer that carries liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions, together with minor quantities of ground, storm and surface waters that are not admitted intentionally.

"Segregated domestic wastes" means wastes from nonresidential sources resulting from normal domestic activities which are measurable and set apart from industrial, trade, cooling water, and/or process discharge wastes.

"Sewage" is the spent water of a community. The preferred term is "wastewater."

"Sewer" means a pipe or conduit that carries wastewater or drainage water.

"Sewer service charge" is a service charge levied on users of the wastewater collection and treatment facilities for payment of capital-related expenses, as well as operation and maintenance costs of said facilities. (User charge, which covers operation and maintenance and replacement costs, is a part of the sewer service charge.)

"Shall" is mandatory; "may" is permissible.

"Significant industrial user" means an industrial user which discharges at least twenty-five thousand (25,000) gallons of effluent on any day of the year into the city's sewer system, has a flow greater than ten percent of the total flow carried by the city's sewer system, or has a material in its discharge included on a list of toxic pollutants issued under § 147.07 (1), Wisconsin Statutes.

"Slug" means any discharge of water or wastewater which, in concentration of any given constituent or in quantity of flow, exceeds for any period of duration longer than fifteen (15) minutes, more than five times the average twenty-four (24) hour concentration of flows during normal operation and shall adversely affect the system and/or performance of the wastewater treatment works.

"Standard methods" means the examination and analytical procedures set forth in the most recent edition of "Standard Methods for the Examination of Water and Wastewater" published jointly by the American Public Health Association, the American Water Works Association and The Water Pollution Control Federation.

"Storm drain" (sometimes termed storm sewer) means a drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source.

"Storm water runoff" means that portion of the rainfall that is drained into sewers.

"Suspended solids" means solids that either float on the surface of, or in suspension in, water, wastewater, or other liquids, and that are removable by laboratory filtering as prescribed in "Standard Methods for Examination of Water and Wastewater" and are referred to as nonfilterable residue.

"Unpolluted water" is 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 benefitted by discharge to the sanitary sewers and wastewater treatment facilities provided.

"User charge" is a charge levied on users of the wastewater collection and treatment facilities as a part of the sewer service charge for payment of operation and maintenance and replacement costs of the facilities.

"Wastewater" means 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" means the structures, equipment and processes required to collect, carry away and treat domestic and industrial wastes and dispose of the effluent.

"Wastewater treatment works" means an arrangement of devices and structures for treating wastewater, industrial wastes and sludge. Sometimes used synonymously with waste treatment.

"Watercourse" means a natural or artificial channel for the passage of water, either continuously or intermittently.

"Wisconsin pollutant discharge elimination system (WPDES) permit" is a document issued by the state of Wisconsin, Department of Natural Resources which establishes effluent limitations and monitoring requirements for the municipal wastewater treatment facility. WPDES permit No. WI-0021474 and modifications thereof pertain to the wastewater treatment facility in the city of Juneau operated by the Juneau utility commission. (Ord. 23-2000 (part); prior code § 5-4-1)