For the purpose of this chapter the following definitions shall apply unless the context clearly indicates or requires a different meaning. All other words shall be construed as having the meaning defined in Glossary Water and Sewage Control Engineering, published by the Water Pollution Control Federation, Washington, D.C., or by their general usage, if undefined.
"BEST MANAGEMENT PRACTICES (BMPs)." Schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to implement the prohibitions listed in Sections 403.5 (a)(1) and (b) of the pretreatment regulations (R61-9.403). BMPs also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.
"B.O.D." or "BIOCHEMICAL OXYGEN DEMAND." The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure, five days at 20°C., expressed in milligrams per liter and as further defined in standard methods.
"BUILDING DRAIN." That part of 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 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.
"EPA." The United States Environmental Protection Agency.
"EXCESSIVE INFILTRATION/INFLOW." The quantities of infiltra- tion/inflow which can be economically eliminated from a sewer system by rehabilitation, as determined by a cost-effectiveness analysis that compares the costs for correcting the infiltration/inflow conditions with the total costs for transportation and treatment of the infiltration/inflow, subject to EPA provisions.
"GARBAGE." Solid wastes from the domestic and commercial preparation of cooking and dispension of food from the handling, storage, and sale of produce.
"INDUSTRIAL WASTES." The liquid waste from industrial manufacturing processes, trade or business, as distinct from sanitary sewage.
"INFILTRATION." The water entering a sewer system, including sewer service connections, from the ground, through such means as, but not limited to, defective pipes, pipe joints, connections, or manhole walls. "INFILTRATION" does not include, and is distinguished from, "inflow".
"INFILTRATION/INFLOW." The total quantity of water from both infiltration and inflow, without distinguishing the source.
"INFLOW." The water discharged into a sewer system, including service connections from such sources as, but not limited to, roof leaders, cellar, yard, and area drains, foundation drains, cooling water discharges, drains from springs and swampy areas, manhole covers, cross connections from storm sewers and combined sewers, catch basins, storm waters, surface run-off, street wash waters, or drainage. "INFLOW" does not include, and is distinguished from, "infiltration".
"INSTANTANEOUS LIMIT." The maximum concentration of a pollutant allowed to be discharged at any time, determined from the analysis of any discrete or composites sample collected, independent of the industrial flow and the duration of the sampling event.
"NATURAL OUTLET." Any outlet into watercourse, pond, ditch, lake, or other body of surface or groundwater.
"pH." The logarithm of the reciprocal of weight of hydrogen ions in grams per liter of solution.
"PROPERLY SHREDDED GARBAGE." The waste from the preparation of cooking and dispensing of food 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 3/8 inches in any dimension.
"PUBLIC SANITARY SEWER." A sewer in which all owners of abutting properties have equal rights and is controlled by public authority.
"SANITARY SEWER." A sewer which carries sewage to which storm, surface, and ground waters are not intentionally admitted.
"SEWAGE." A combination of 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 the devices and structures used for treating sewage.
"SEWAGE TREATMENT WORKS." All facilities for collecting, pumping, treating, and disposing of sewage or industrial wastewaters.
"SEWER." A pipe or conduit for carrying sewage.
"SEWER SURCHARGE." A charge for sewer service and treatment service for wastes having characteristics different from sanitary wastes and for which additional charges must be assessed in order to make compensation for additional expenses incurred.
"SIGNIFICANT INDUSTRIAL USER." Any industrial user subject to categorical pretreatment standards under Section 403.6 and 40 CFR Chapter 1, Subchapter N; or any non-categorical industrial user that either discharges 25,000 gallons per day or more of process water, contributes a process waste stream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the treatment facility, or has a reasonable potential, in the opinion of the city, to adversely affect the treatment facility).
"SIGNIFICANT VIOLATOR." A significant industrial user that violates the following or any other industrial user that violates paragraphs (C), (D), or (H):
(1) Chronic violations of wastewater discharge limits, defined here as those in which 66% or more of all the measurements taken for the same pollutant parameter taken during a six month period exceed (by any magnitude) a numeric pretreatment standard or requirement, including instantaneous limits as defined in § 51.01;
(2) Technical review criteria (TRC) violations, defined here as those in which 33% or more of wastewater measurements taken for each pollutant parameter during a six month period equals or exceeds the product of the numeric pretreatment standard or requirement including instantaneous limits, as defined by §§ 51.01 multiplied by the applicable criteria (1.4 for BOD, TSS, fats, oils and grease, and 1.2 for all other pollutants except pH);
(3) Any other violation of a pretreatment standard or requirement (daily maximum, long-term average, instantaneous limit, or narrative standard)that the city determines has caused, alone or in combination with other discharges, interference or pass through, including endangering the health of POTW personnel or the general public;
(4) Any discharge of a pollutant that has caused imminent endangerment to the public or to the environment, or has resulted in the city’s exercise of its emergency authority to halt or prevent such a discharge;
(5) Failure to meet, within 90 days of the scheduled date, a compliance schedule milestone contained in an individual wastewater discharge permit or enforcement order for starting construction, completing construction, or attaining final compliance;
(6) Failure to provide within 45 days after the due date, any required reports, including baseline monitoring reports, reports on compliance with categorical pretreatment standard deadlines, periodic self-monitoring reports, and reports on compliance with compliance schedules;
(7) Failure to accurately report noncompliance; or any other violation(s), which may include a violation of best management practices, which the city determines will adversely affect the operation or implementation of the local pretreatment program.
"SLUDGE." 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 longer than 15 minutes, more than five times the average 24-hour concentration occurring during normal operation.
"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 Pollution Control Federation.
"STORM DRAIN." or "STORM SEWER." A sewer which carries storm and surface waters and drainage but excludes sewage and industrial wastes.
"STREET." Construed to embrace streets, avenues, drives, boulevards, roads, alleys, lanes, and viaducts, and all other public highways.
"SUSPENDED SOLIDS." Solids that either float on the surface of or are in suspension in water, sewage, or other liquids which are removable by laboratory filtering and is further defined in standard methods.
"TOTAL SOLIDS." The sum of suspended matter, settleable matter, and dissolved matter, both volatile and nonvolatile and as further defined in standard methods.
"WATERCOURSE." A channel in which flow of water occurs, either continuously or intermittently.
('64 Code, § 24-A-1) (Ord., passed 7-8-80; Am. Ord., passed 9-28-82; Am. Ord. 10-001, passed 1-26-10)