For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ADMINISTRATOR. The Administrator of the United States Environmental Protection Agency.
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.
BUILDING SEWER. The building (house) sewer is that part of the horizontal piping of a drainage system which extends from the end of the building drains and which receives the discharge of the building drain and conveys it to a public sewer or other point of disposal.
C.F.R. Code of Federal Regulations.
COMBINED SEWER. A sewer which is designed and intended to receive wastewater, storm, surface and ground water drainage.
COMMERCIAL USER. Any user of wastewater facilities where business or commercial trade is conducted which discharges domestic or non-domestic wastes, or a combination of both, or has an average monthly discharge flow of greater than 60,000 gallons.
DOMESTIC WASTES. Waterborne wastes, normally discharged from the sanitary conveniences of dwellings (including apartment houses and hotels) or office buildings, free from storm and surface water and non-domestic wastes.
EFFLUENT CRITERIA. Defined in any applicable NPDES permit.
EXECUTIVE DIRECTOR. The Executive Director of the Department of National Resources.
FEDERAL ACT. The Federal Water Pollution Control Act, as amended by the Federal Water Pollution Control Act of Amendments of 1972, commonly known as the Clean Water Act, being 33 U.S.C. §§ 1251 et seq., as the same now exists or may hereafter be amended.
FEDERAL GRANT. The United States government participation in the financing of the construction of treatment works as provided for by Title 11, “grants for construction of treatment works” of the Act and implementing regulations.
GARBAGE. Solid animal and vegetable wastes from the domestic and commercial preparation, cooking and dispensing of food and from the handling, storage and sale of produce.
INDUSTRIAL COST RECOVERY. The amount to be paid annually by industrial users who contribute industrial wastes to the wastewater facilities constructed under EPA Project C 190637.
INDUSTRIAL USER. Any non-governmental user of publicly owned wastewater facilities identified in the North American Industry Classification System, United States, 2007, U.S. Census Bureau as the same now exists or may hereafter be amended and supplemented. A user defined in the NAICS Manual may be excluded as an INDUSTRIAL USER if it is determined by the city that such user will introduce into the wastewater system primarily segregated wastes or wastes from sanitary conveniences rather than industrial wastes.
INDUSTRIAL WASTE or PROCESS 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 resource as distinct from sanitary wastewater.
MILLIGRAMS PER LITER. A unit of the concentration of water or wastewater constituent. It is 0.001 gram of the constituent in 1,000 milliliters of water, sometimes used as synonymous with parts per million (ppm).
NATIONAL CATEGORICAL PRETREATMENT STANDARD. Any regulation containing pollutant discharge limits promulgated by the EPA in accordance with § 307(b) and (c) of the Act (33 U.S.C. § 1317) and 40 C.F.R. chapter 1, subchapter N, parts 405 through 471 which applies to a specific category of industrial users.
NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface groundwater.
NON-DOMESTIC WASTEWATER. The wastewater from industrial processes, trades or businesses as distinct from domestic wastewater. NON-DOMESTIC WASTEWATER includes any potential infectious disease bearing wastes.
NORMAL DOMESTIC WASTEWATER CHARACTERISTICS. The normal characteristics of domestic wastewater that are the average concentration of a five-day BOD is established at not greater than 250 parts per million by weight; ammonia nitrogen (NH3-N) is no greater than 30 parts per million by weight; and total suspended solids is no greater than 300 parts per million by weight.
NPDES PERMIT. Any permit or equivalent document or requirements issued by the Administrator, or, where appropriate, by the executive director to regulate the discharge of pollutants pursuant to the applicable sections of the federal or state act.
O&M. The annual costs for operation and maintenance and includes replacement costs.
PARTS PER MILLION. A weight to weight ratio; the PARTS PER MILLION value multiplied by the factor of 8.345 shall be equivalent to pounds per million gallons of water. PARTS PER MILLION and milligrams per liter shall be synonymous terms.
PERSON. Any and all persons, natural or artificial, including any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, political subdivision, governmental agency, trust, estate or other legal entity or their legal representatives, agents or assigns.
pH. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed by one of the procedures outlined in Standard Methods.
PRETREATMENT. The reduction of the amount of pollutants, the elimination of pollutants or the alteration of the nature of pollutant properties in wastewater to a less harmful state prior to or in lieu of discharging or otherwise introducing such pollutants into a public treatment works. The reduction or alteration may be obtained by physical, chemical or biological processes, or by other means, except as prohibited by 40 C.F.R. § 403.6(d).
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 owned by and subject to the jurisdiction of the city. It shall also include 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. Expenditures for obtaining and installing equipment, accessories or appurtenances which are necessary during the service life of any of the wastewater facilities to maintain the capacity and performance for which any such facilities were designed and constructed.
RESIDENTIAL USER. Any user of wastewater facilities where residency is established and only sanitary wastes are discharged.
SAMPLING MANHOLE. A structure located on a site from which wastes are discharged. The purpose of a SAMPLING MANHOLE is to provide access for the city representative to sample or measure discharges.
SANITARY SEWER. A sewer that conveys sewage or industrial wastes, or a combination of both, and into which storm, surface and ground waters or unpolluted industrial wastes are not intentionally admitted.
SANITARY WASTES. Any solid, liquid or gaseous substance discharged from residences, business buildings, institutions, commercial and industrial establishments contributed by reason of human occupancy.
SEWAGE. Used interchangeably with wastewater.
SEWER. A pipe or conduit for conveying sewage or any other waste liquids, including storm, surface and ground water drainage.
SHOCK LOAD. 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 more than five times the average 24-hour concentration of flows during normal operation and may adversely affect the collection system or performance of the wastewater treatment facilities.
SS (SUSPENDED SOLIDS). Solids that either float on the surface of or are in suspension in water, sewage or industrial waste, and which are removable by a laboratory filtration device. Quantitative determination of SUSPENDED SOLIDS shall be made in accordance with procedures set forth in standard methods.
STANDARD METHODS. 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 Environment Federation.
STATE ACT. Iowa Code Chapter 455B as the same now exists or may hereafter be amended.
STORM SEWER. A sewer that carries storm, surface and ground water drainage but excludes sewage and industrial wastes other than unpolluted cooling water.
U.S.C. United States Code.
UNPOLLUTED WATER. Water of quality equal or better than the applicable effluent criteria in effect under the state or federal act or water that would not cause violation of receiving quality standards under the applicable act and would not be benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
USEFUL LIFE. The estimated period during which a treatment works will be operated.
WASTEWATER. The spent water of a community. It may be liquid or a combination of liquid and water carried wastes from residences, commercial buildings, industrial plants and institutions, together with any groundwater, surface water or stormwater that may be present.
WASTEWATER SERVICE CHARGE. The charge per quarter or month levied on all users of the wastewater facilities.
WATER POLLUTION CONTROL FACILITIES or WASTEWATER SYSTEM. The publicly owned structures, equipment and processes required to collect, convey and treat domestic and industrial wastes and convey effluent to a watercourse.
WATER POLLUTION CONTROL PLANT. A publicly owned arrangement of devices and structures for treating wastewater, industrial wastes and sludge. Sometimes used as synonymous with waste treatment plant or wastewater treatment plant or pollution control plant.
WATER QUALITY STANDARDS. As defined in the water pollution regulations of the state.
WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently. (Prior Code, § 4-4-1) (Ord. 215, passed 3-20-1977; Ord. 687, passed 5-18-2009)