For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
APPROVED LABORATORY PROCEDURES. The measurements, tests, and analyses of the characteristics of water and wastes in accordance with analytical procedures as established in 40 C.F.R. part 136 as revised.
BIOCHEMICAL OXYGEN DEMAND (B.O.D.). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20°C expressed in milligrams per liter.
BRANCH SEWER. A sewer which receives sewage from lateral sewers from a relatively small area.
BUILDING SEWER. The extension from the building drain to the sewer connection or other place of disposal.
CATEGORICAL STANDARD. Federal categorical pretreatment standards issued in accordance with § 307 of the Clean Water Act.
CITY. The City of El Mirage, Arizona.
COMBINED SEWER. A sewer receiving both surface runoff and sewage.
DEVELOPER. Any person engaged in the organizing and financing of a sewage collecting system within an area contributing to a trunk sewer of the city sewer system. Such may be either a subdivider or a legally constituted improvement district.
DOMESTIC WASTE. A typical, residential-type waste which requires no pretreatment under the provisions of this chapter before discharging into the sanitary sewer system, excluding all commercial, manufacturing, and industrial wastes.
GARBAGE. Solid wastes from the preparation, cooking, and dispensing of food and from the handling, storage, and sale of products.
INDUSTRIAL DISCHARGE. Any introduction into the POTW of a non-domestic pollutant which:
(1) Is produced by a source which would be subject to any categorical standards or pretreatment requirements if such source were to be discharged to the POTW; and
(2) Contains any substance or pollutant for which a discharge limitation or prohibition has been established by any categorical standard or pretreatment requirement.
INDUSTRIAL USER.
(1) Any non-residential user of the sewer system which discharges more than the equivalent strength of 25,000 gallons per day of domestic wastes;
(2) Any non-residential user of the sewer system which either discharges or produces a waste which potentially could be discharged to the POTW which would be subject to any categorical standard or pretreatment requirement;
(3) Has control over the disposal of a waste as described in divisions (1) and (2) above; and/or
(4) Has the right of possession and control over any property which produces a waste as described in division (1), (2), or (3) above.
INDUSTRIAL USER PERMIT or PERMIT. The permit granted by the city which each industrial user must first obtain prior to causing or allowing any industrial discharge to the POTW.
INDUSTRIAL WASTES. Liquid wastes from industrial users.
INTERFERENCE. Inhibition or disruption of the sewer system, treatment process, or operations as the result of the discharge of any pollutant capable of causing or significantly contributing to the:
(1) Violation of any NPDES permit standard which has been imposed on the city;
(2) City’s inability to reasonably allow the maximum benefit reuse of POTW residuals; or
(3) City’s ability to reasonably provide the least expensive method of disposal for POTW residuals.
LATERAL SEWER. A sewer which receives sewage from one or more branch sewers as tributaries.
MAIN SEWER. A sewer which receives sewage from one or more branch sewers as tributaries.
NATURAL OUTLET. Any outlet into a watercourse, ditch, or other body of surface or groundwater.
pH. The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
POTW. Publicly-owned treatment works, and includes all facilities for collecting, transporting, pumping, treating, and disposing of sewage, which are owned and/or operated, in whole or in part, by the city and which provide the city with wastewater collection and disposal services.
PRETREATMENT. The physical, chemical, biological, or other treatment of any industrial discharge prior to discharge to the POTW, for the purpose of:
(1) Reducing the amount or concentration of any pollutant;
(2) Eliminating the discharge of any pollutant; or
(3) Altering the nature of any pollutant characteristic to a less harmful state.
PROPERLY SHREDDED GARBAGE. Garbage that has 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-fourth inch in any dimension.
PUBLIC SEWER. A sewer controlled by public authority.
REPLACEMENT. Those expenditures made for obtaining and installing equipment, accessories, and/or appurtenances during the useful life of the treatment works which are necessary to maintain the capacity and performance of the treatment works for which they were designed and constructed.
SANITARY SEWER. A sewer connected to the POTW which carries sewage and 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.
SEWER CONNECTION. The connection to the public sewer and the extension therefrom of the sewer to the property line at the alley or the curb line of the street, whichever is applicable, depending on the location of the public sewer.
SEWER CONNECTION FEE. The initial sewer connection charge as set forth in § 51.016 and shall apply to all sewer connections to the public sewer.
SEWER DEPARTMENT. Those officers and agents of the city supervising sewer operations for the city.
STANDARD METHODS. The procedure as described in the most current edition of Standard Methods for the Examination of Water and Wastewater published by the American Health Association, or the most current edition of Manual of Methods for Chemical Analysis of Water and Wastes published by the U.S. Environmental Protection Agency.
STORM SEWER or STORM DRAIN. A sewer which carries storm and surface waters and drainage, but excludes sewage and polluted industrial wastes.
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.
TRUNK SEWER. A sewer which receives sewage from many tributary main sewers and serves as an outlet for a large territory.
USER. Any person, entity, lot, parcel of land, building, premises, municipal corporation, or other political subdivision that discharges, causes, or permits the discharge of wastewater into the sewage system.
WASTEWATER. Any liquid- or water-carried pollutant, including an industrial discharge, which is introduced into the sewage works from any dwelling, commercial building, industrial facility, or institution or by any user.
WATERCOURSE. A channel in which a flow of water occurs either continuously or intermittently.
(Prior Code, Art. 16-1)