For the purposes of this subchapter, the following definitions apply unless the context clearly requires a different meaning. Throughout, “shall” is mandatory while “may” is permissive.
BOD or BIOCHEMICAL OXYGEN DEMAND. The quantity of oxygen, expressed in milligrams per liter, which is utilized in the biochemical oxidation of organic matter under standard laboratory procedures with nitrification inhibition in five days at 20ºC.
BUILDING DRAIN. The part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste and other drainage pipes inside the walls of a building and conveys it to the building sewer beginning three feet outside of the building wall.
(1) BUILDING DRAIN, SANITARY. A building drain which conveys sanitary or industrial sewage only.
(2) BUILDING DRAIN, STORM. A building drain which conveys stormwater or other clear-water drainage, but no wastewater.
BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal. Also called a HOUSE CONNECTION or LATERAL.
(1) BUILDING SEWER, SANITARY. A building sewer which conveys sanitary or industrial sewage only.
(2) BUILDING SEWER, STORM. A building sewer which conveys storm waste or other clear-water drainage, but no sanitary or industrial sewage.
COMBINED SEWER. A sewer intended to receive both wastewater and storm or surface water.
COMPATIBLE POLLUTANT.
(1) Biochemical oxygen demand, suspended solids, pH and fecal coliform bacteria, plus additional pollutants identified in the NPDES permit if the treatment works is designed to treat such pollutants and in fact does remove such pollutants to a substantial degree. The term SUBSTANTIAL DEGREE is not subject to a precise definition, but generally contemplates removals on the order of 80% or greater. Minor, incidental removals on the order of 10% to 30% are not considered substantial.
(2) Examples of the additional pollutants which may be considered compatible include:
(a) Chemical oxygen demand;
(b) Total organic carbon;
(c) Phosphorus and phosphorus compounds;
(d) Nitrogen and nitrogen compounds; and
(e) Fats, oils and greases of animal or vegetable origin, except as prohibited where these materials would interfere with the operation of the treatment works.
CONSTRUCTION STANDARDS. The town’s Construction Standards as adopted and amended from time to time.
EASEMENT. An acquired legal right for the specific use of land owned by others.
FECAL COLIFORM. Any of a number of organisms common to the intestinal tract of humans and animals whose presence in sanitary sewage is an indicator of pollution.
FLOATABLE OIL. Oil, fat or grease in a physical state such that it will separate by gravity from wastewater through treatment in a pretreatment facility approved by the town.
GARBAGE. Solid wastes from the domestic and commercial preparation, cooking and dispensing of food and the handling, storage and sale of produce.
INCOMPATIBLE POLLUTANT. Any pollutant which is not defined as a compatible pollutant, including nonbiodegradable dissolved solids.
INDUSTRIAL WASTES. The liquid wastes from industrial manufacturing processes, trade or business as distinct from employee wastes or wastes from a sanitary convenience.
INFILTRATION. The water entering a sewage system, including building drains and sewers, 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/FLOW. The total quantity of water from both infiltration and inflow without distinguishing the source.
INFLOW. The water discharged into a sewer system, including building drains and sewers, from sources such as, but not limited to, roof leaders, cellar, yard and area drains, foundation drains, unpolluted cooling water discharges, drains from springs and swampy areas, manhole covers, cross- connections from storm sewers and combined sewers, catch basins, stormwaters, surface runoff, street wash waters or drainage. INFLOW does not include and is distinguished from infiltration.
INSPECTOR. The person or persons duly authorized by the town through its Town Council to inspect and approve the installation of building sewers and their connection to the public sewer system.
MAINTENANCE. The rehabilitation, modification or improvement of a building sewer using methods not requiring excavation which include, but are not limited to, root removal, cleaning and televising.
MAJOR CONTRIBUTING INDUSTRY. An industry which:
(1) Has a flow of 50,000 gallons or more per average work day;
(2) Has a flow greater than 5% of the flow carried by the municipal system receiving the waste;
(3) Has in its waste a toxic pollutant in toxic amounts as defined in the standards issued under 33 U.S.C. § 1317(a); or
(4) Has a significant impact, either singly or in combination with other contributing industries, on a treatment works or on the quality of effluent from said treatment works.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT or NPDES PERMIT. A permit issued under the National Pollutant Discharge Elimination System for the discharge of wastewaters to the navigable waters of the United States pursuant to 33 U.S.C. § 1342.
NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface groundwater, including storm sewers and combined sewer overflows.
NH3N. The same as ammonia nitrogen measured as nitrogen. Laboratory determinations shall be made in accordance with the procedures set forth in the Standard Methods as defined herein.
P or PHOSPHORUS. The chemical element phosphorus.
PERSON. Any individual, firm, company, association, society, corporation, group or other entity.
pH. The reciprocal of the logarithm of the hydrogen ion concentration. The concentration is the weight of hydrogen ions in grams per liter of solution.
PRETREATMENT. The treatment of industrial sewage from privately-owned industrial sources prior to introduction into a public treatment works.
PRIVATE SEWER. A sewer which is not owned by a public authority.
PROPERLY SHREDDED GARBAGE. The wastes from the preparation, cooking and dispensing of food which 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-half inch in any dimension.
PUBLIC SEWER. A sewer which is owned and controlled by the public authority and consists of the following increments.
(1) COLLECTOR SEWER. A sewer whose primary purpose is to collect wastewater from individual point source discharges.
(2) FORCE MAIN. A pipe in which wastewater is carried under pressure.
(3) INTERCEPTOR SEWER. A sewer whose primary purpose is to transport wastewater from collector sewers to a treatment facility.
(4) PUMPING STATION. A station positioned in the public sewage system at which wastewater is pumped to a higher level.
REPAIR. A rehabilitation, modification or improvement to an existing building sewer which requires excavation or partial replacement.
SANITARY SEWER. A sewer which carries sanitary and industrial wastes, and to which stormwater, surface water and groundwater is not intentionally admitted.
SEWAGE. The combination of liquid and water- carried wastes from residences, commercial buildings, industrial plants and institutions, including polluted cooling waters. The three most common types of SEWAGE are as follows:
(1) COMBINED SEWAGE. Wastes, including sanitary sewage, industrial sewage, stormwater, infiltration and inflow, which are carried to wastewater treatment facilities by a combined sewer;
(2) INDUSTRIAL SEWAGE. A combination of liquid and water-carried wastes, including the wastes from pretreatment facilities and polluted cooling waters, which are discharged from any industrial establishment and result from any trade or process carried out in that establishment; and
(3) SANITARY SEWAGE. The combination of liquid and water-carried wastes discharged from toilets and other sanitary plumbing facilities.
SEWAGE WORKS. The structures, equipment and processes to collect, transport and treat domestic and industrial wastes and to dispose of the effluent and accumulated residual solids.
SEWER. A pipe or conduit for carrying sewage.
SLUG. Any discharge of water or wastewater which in its concentration of any given constituent or in its quantity of flow exceeds more than three times the average 24-hour concentration of flow during normal operation for any period of duration longer than ten minutes, adversely affecting the collection system.
STANDARD METHODS. The laboratory procedures set forth in the latest edition, at the time of the analysis being completed, of Standard Methods for the Examination of Water and Wastewater, which is prepared and published jointly by the American Public Health Association, the American Water Works Association and the Environment Federation.
STORM SEWER. A sewer for conveying water, groundwater or unpolluted water from any source, and to which sanitary or industrial wastes are not intentionally admitted.
SUPERINTENDENT. The Superintendent of the Municipal Sewage Works or his or her authorized deputy, agent or representative.
SUSPENDED SOLIDS. Solids which either float on the surface of, or are in suspension in, water, sewage or other liquids and which are removable by laboratory filtering under standard laboratory procedures.
TOTAL SOLIDS. The sum of suspended and dissolved solids.
TOXIC AMOUNT. Concentrations of any pollutant or combination of pollutants which, upon exposure to or assimilation into any organism, will cause adverse effects such as genetic mutations, cancer or physiological manifestations, as defined in the standards issued pursuant to 33 U.S.C. § 1317(a).
UNPOLLUTED WATER. Water of a quality which:
(1) Is equal to or better than the effluent criteria in effect;
(2) Would not cause a violation of receiving water quality standards; and
(3) Would not be benefitted by discharge to the sanitary sewers and wastewater treatment facilities provided.
VOLATILE ORGANIC MATTER. The material in sewage solids which is transformed to gases or vapors when heated at 55ºC for 15 to 20 minutes.
WATERCOURSE. A natural or artificial channel for the continuous or intermittent passage of water.
(Ord. 2010-2, passed 9-7-2010)