For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning. Terms not otherwise defined herein shall be as adopted in the latest edition of Standard Methods for the Examination of Water and Wastewater (Standard Methods), published by the American Public Health Association, the American Water Works Association and the Water Pollution Control Federation.
ACT. The Federal Water Pollution Control Act Amendments of 1972, Pub. Law No. 92-500, also known as the Clean Water Act, 33 U.S.C. §§ 1251 et seq.
AMMONIA NITROGEN (NH3-N). The initial product in the decomposition of nitrogenous organic matter as measured by using standard laboratory methods, as set out herein, expressed in milligrams per liter (mg/l).
BIOCHEMICAL OXYGEN DEMAND (BOD). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures in five days at 20°C, expressed in milligrams per liter (mg/l).
CATEGORICAL STANDARDS. National categorical pretreatment standards or pretreatment standards as published by U.S. Environmental Protection Agency in federal regulations, 40 C.F.R. part 903.
CHEMICAL OXYGEN DEMAND (COD). The quantity of equivalent oxygen utilized in the chemical oxidation of organic matter as measured by standard laboratory methods, as set out herein, expressed in milligrams per liter (mg/l).
COMPATIBLE POLLUTANT. BOD, suspended solids, pH and fecal coliform bacteria, and additional pollutants as are now or may be in the future specified and controlled in the town’s National Pollutant Discharge Elimination System permit for its wastewater treatment system where the system has been designed and used to reduce or remove the pollutants.
CONTROL AUTHORITY. The designated official of the town or his or her duly authorized agent or representative.
DOMESTIC WASTES. Liquid wastes:
(1) From the noncommercial preparation, cooking and handling of food; and/or
(2) Containing human excrement and similar matter from the sanitary conveniences of dwellings, commercial buildings, industrial facilities and institutions.
EXCESSIVE RADIATION DOSE. A dose of radiation in excess of the maximum permissible dose.
GARBAGE. Solid wastes from the domestic and commercial preparation, cooking and dispensing of food and from the handling, storage and sale of food.
IMMEDIATE DISSOLVED OXYGEN DEMAND (IDOD). The quantity of oxygen utilized by an industrial waste in excess of that normally attributable to sewage as measured by using standard laboratory methods, as set out herein, expressed in mg/l.
INCOMPATIBLE POLLUTANT. Any pollutant which is not a “compatible pollutant”, as defined in this section.
INDUSTRIAL WASTEWATER. The water-borne wastes resulting from the processes employed in industrial, manufacturing, trade or business establishments, as distinct from domestic wastes.
INFILTRATION. The water entering a sanitary sewer, 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.
INFLOW. The water discharged into a sanitary sewer 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 runoff, street washwaters or drainage. INFLOW does not include, and is distinguished from, infiltration.
MAJOR INDUSTRIAL USER. Any industry whose flow entering the town’s wastewater treatment system exceeds 25,000 gallons per day or who is subject to pretreatment requirements for removal of incompatible pollutants.
MAXIMUM PERMISSIBLE DOSE. A dose of radiation to any part of the body, internal or external, or both, that in the light of present knowledge, is not expected to cause appreciable bodily injury to a person at any time during his or her life.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES). The program for issuing, conditioning and denying permits for the discharge of pollutants from point sources into the navigable waters, the contiguous zone and the oceans pursuant to 33 U.S.C. § 1342.
PERSON. Any individual, firm, company, partnership, corporation, association, group or society, and includes the state, and agencies, districts, commissions and political subdivisions created by or pursuant to state law.
pH. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration, and indicates the degree of acidity or alkalinity of a substance. A pH of 7.0 is neutral, above 7.0 is alkaline and below 7.0 is acid.
PRETREATMENT. Application of physical, chemical and/or biological processes to reduce the amount of pollutants in or alter the nature of the pollutant properties in a wastewater prior to discharging the wastewater into the publicly owned wastewater treatment system.
PRETREATMENT STANDARDS. All applicable federal rules and regulations implementing 33 U.S.C. § 1317, as well as any nonconflicting state or local standards. In cases of conflicting standards or regulations, the more stringent shall be applied.
PUBLICLY OWNED TREATMENT WORKS (POTW). A treatment works as defined by § 212 of the Act (33 U.S.C. § 1292), which is owned by the town. This definition includes the treatment plants and any sewers that convey wastewater to the POTW treatment plant, but does not include pipes, sewers, or other conveyances not connected to a facility providing treatment. For the purposes of this chapter, POTW shall also include any sewers that convey wastewaters to the POTW from persons outside the town who are, by contract or agreement, users of the POTW.
RECEIVING STREAM. A body of water, stream or watercourse receiving the discharge of waters from the wastewater treatment system.
SANITARY SEWER. A sewer intended to receive domestic sewage and industrial waste, except that of the type expressly prohibited by this chapter, without the admixture of surface water and storm water.
STANDARD METHODS. Methods of laboratory analysis as described in most current editions of Standard Methods for the Examination of Water and Wastewater, American Public Health Association; Methods for Chemical Analysis of Water and Wastes, U.S. Environmental Protection Agency; Annual Book of Standards, American Society for Testing and Materials; or any other published methods of laboratory analyses which have the approval of the state and federal regulatory agencies.
STORM SEWER or STORM DRAIN. A sewer which carries storm or surface waters and drainage, but excludes sewage and industrial wastes.
STORM WATER. Any flow occurring during or immediately following any form of natural precipitation and resulting therefrom.
SUPERINTENDENT. The person designated by the town to supervise the operation of the publicly owned treatment works and who is charged with certain duties and responsibilities by this chapter, or his or her duly authorized representative.
SUSPENDED SOLIDS (TSS). The total suspended matter that floats on the surface of, or is suspended in, water, wastewater or other liquids, and which is removable by laboratory filtering.
TOTAL FIXED SOLIDS. The nonvolatile filterable and nonfilterable solids in a wastewater sample as determined by standard laboratory procedures.
TOXIC SUBSTANCES. Any pollutant or combination of pollutants listed as toxic in regulations promulgated by the Administrator of the Environmental Protection Agency under the provision of the Clean Water Act, 33 U.S.C. § 1317(a), or other acts.
UNPOLLUTED WATER. Water not containing any pollutants limited or prohibited by the effluent standards in effect, or water whose discharge will not cause any violation of receiving water quality standards.
USER. Any person, as heretofore defined, who discharges, causes or permits the discharge of wastewater into the town’s wastewater treatment system.
USER CLASSIFICATION. A classification of user based on the 1972 (or subsequent) edition of the Standard Industrial Classification (SIC) Manual prepared by the United States Office of Management and Budget.
WASTEWATER. The liquid- and water-carried industrial or domestic waste from dwellings, commercial buildings, industrial facilities and institutions, together with any ground water, surface water and storm water that may be present, whether treated or untreated, which is discharged into or permitted to enter the town’s wastewater treatment system.
WASTEWATER DISCHARGE PERMIT (PERMIT). A document issued by the town to a major industrial user allowing discharge into the town’s wastewater treatment system, and listing any applicable conditions (e.g., frequency of sampling, monitoring, pretreatment requirements and the like) to the user’s permission to discharge.
WASTEWATER DISCHARGE SITE. An authorized sewer tap joining a user’s sewer system to the town’s wastewater treatment system or, alternatively, a designated discharge site located at the wastewater treatment plant.
WASTEWATER TREATMENT SYSTEM. Any devices, facilities, structures, equipment or works owned or used by the town for the purpose of the transmission, storage, treatment, recycling and reclamation of industrial and domestic wastes, or necessary to recycle or reuse water at the most economical cost over the estimated life of the system, including (but not restricted to) intercepting sewers, outfall sewers, sewage collection systems, pumping, power and other equipment, and their appurtenances; extensions, improvements, remodeling additions and alterations thereof; elements essential to provide a reliable recycled supply such as standby treatment units and clear well facilities; and any works, including site acquisition of the land that will be an integral part of the treatment process or is used for ultimate disposal of residues resulting from the treatment.
(Prior Code, § 13.12.010) (Ord. 90-02, passed - -)