For the purpose of this subchapter, 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 determined acceptable by federal guidelines as established in 40 C.F.R. part 136, or as approved by the regional administrator, U.S. Environmental Protection Agency.
AVERAGE QUALITY. The arithmetic average (weighted by flow value) of all the daily determinations of concentration, as that term is defined in this section made during a calendar month.
BOD (BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory conditions for five days at a temperature of 20º C., reported in milligrams per liter (mg/l).
CATEGORICAL STANDARDS. Federal categorical pretreatment standards issued in accordance with section 307 of the Clean Water Act.
COD (CHEMICAL OXYGEN DEMAND). The quantity of oxygen consumed from a chemical oxidation of inorganic and organic matter present in the water or waste water, expressed in mg/l.
COOLING WATER. The clean waste water discharged from any heat transfer system, such as condensation, air condition, cooling or refrigeration.
DAILY COMPOSITE SAMPLE. A sample of effluent continuously collected over a normal operating day.
DAILY COMPOSITE SAMPLE QUALITY. The concentration of some parameter tested in a daily composite sample, as that term is defined in this section, and reported proportional to flow.
DAILY DETERMINATION OF CONCENTRATION. For composite samples, DAILY DETERMINATION OF CONCENTRATION shall be the same as daily composite sample quality, as that term is defined in this section. For grab samples, the DAILY DETERMINATION OF CONCENTRATION shall be the arithmetic average (weighted by flow value) of all grab sample qualities as that term is defined in this section, determined for any calendar day.
DEPARTMENT. Those officers, agents or designees of the Town Manager who supervise public works operations and are responsible for the public works of the town.
DIRECTOR. The Public Works Director.
DISCHARGED. The disposal of sewage, water, or any liquid from any sewer user into the sewerage system.
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.
ESTABLISHMENT OR PLANT. Any establishment or plant producing liquid waste, with or without suspended solids, required to be discharged into the town sewer system.
GRAB SAMPLE. The concentration of some parameter tested in a grab sample, as that term is defined in this section.
INDUSTRIAL DISCHARGE (WASTE). Any introduction into the POTW of a nondomestic 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 PERMIT. The permit granted by the town which each industrial user must first obtain prior to causing or allowing any industrial discharge to the POTW.
INDUSTRIAL WASTE. Includes:
(1) Any nonresidential user of the sewer system who causes an industrial discharge;
(2) Any nonresidential 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 waste as described in divisions (1) or (2) above; or
(4) Has the right of possession and control over any property which produces a waste as described in divisions (1), (2), or (3) above.
INFLOW. Water other than waste water that enters a sewerage system (including sewer service connections) from sources such as roof leaders, cellar drains, foundation drains, drains from springs and swampy areas, manhole covers, cross-connections between storm sewers and sanitary sewers, catch basins, cooling towers, storm waters, surface runoff, street-wash waters, or drainage.
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 town;
(2) Town’s inability to reasonably allow the maximum benefit reuse of POTW residuals; or
(3) Town’s inability to reasonably provide the least expensive method of disposal for POTW residuals.
MAINTENANCE. Keeping the treatment works in a state of repair, including expenditures necessary to maintain the capacity (capability) for which the works were designed and constructed.
NPDES PERMIT. A National Pollution Discharge Elimination System permit, issued to the town by the EPA which imposes federal standards governing the quality of the treatment effluent discharge from the POTW.
PERMITTEE OR PERMIT HOLDER. Any person, firm, association, corporation, or trust which owns, operates, processes, or controls an establishment or plant being operated under a valid industrial waste permit to discharge waste into the town sewer system.
POLLUTANT. Any dredged spoil, solid waste, incinerator residue, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, cellar dirt, and industrial, municipal, and agricultural wastes.
POTW. Publicly owned treatment works and connecting sewer collection system which are owned and/or operated, in whole or in part, by the town and which provide the town with waste water collection and disposal service.
POTW RESIDUALS. All POTW effluent and/or solids, including sludge, scum, screenings, and grit, which are the byproduct of waste water treatment operations and which must be discharged to the environment for ultimate disposal and/or reuse.
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 of 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.
PRETREATMENT REQUIREMENTS. All of the duties or responsibilities imposed upon the POTW users by this chapter.
PRODUCER. Any person, firm, association, corporation, or trust which owns, operates, processes, or controls an establishment or plant, whether or not a permittee.
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.
SLUG LOAD. Any pollutant discharged to the POTW in such volume or strength as to cause interference. In particular, any pollutant concentration, quantity, or flow rate which, during any period of 15 minutes or more, is greater than five times the average 24-hour concentration, quantity, or flow rate for such pollutant during normal operation.
STANDARD INDUSTRIAL CLASSIFICATION. A coded classification of industries based upon economic activity developed by the U.S. Department of Commerce, as published in the Standard Industrial Classification Manual, 1987, Office of Management and Budget. (1989 Code, § 14-6-1)
STANDARD METHODS. The procedure as described in the most current edition of Standard Methods for Examination of Water and Waste Water, 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.
SUSPENDED SOLIDS (SS). Solids measured in milligrams per liter that either float on the surface of or are in suspension in water, waste water, or other liquids and which are largely removable by a laboratory filtration device, as defined in the standard methods as defined in this section.
SYSTEM DESIGN CAPACITY. The design capacity for normal domestic waste water as established by accepted engineering standards.
TOTAL ORGANIC CARBON (TOC). The total of all organic compounds expressed in milligrams per liter as determined by the combustion infrared method prescribed by approved laboratory procedures.
TREATMENT PARAMETER. A fundamental characteristic of sewage around which treatment is designed, such as, but not limited to, flow, BOD, suspended solids, and phosphorus.
USER. Any person, lot, parcel of land, building, premises, municipal corporation, or other political subdivision that discharges, causes, or permits the discharge of waste water into the town sewerage system.
WASTE WATER. Any liquid or water-carried pollutant, including any industrial discharge, which is introduced into the POTW from any dwelling, commercial building, industrial facility, or institution.
(Ord. 89-07, passed 8-24-1989; Ord. O2020.13, passed 4-23-2020)