For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ACTIVE MAINTENANCE. A maintenance program for individual sewage treatment systems whereby the property owner has complete responsibility for effecting operation, maintenance and replacement (OM&R) in a manner acceptable to the city.
BUILDING DRAIN. The part of the lower 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 which begins at least one foot outside the building line.
BUILDING SEWER. The part of the drainage system which extends from the end of the building drain and conveys its discharge to the public sewer, private sewer, individual sewage-disposal system or other point of disposal.
BIOLOGICAL OXYGEN DEMAND (BOD). The amount of oxygen required for organic material breakdown. It is often used as a gauge for organic water quality.
COMMUNITY SEWAGE TREATMENT SYSTEM. A sewage treatment system which collects sewage from two or more residences or other establishments, consisting of collector lines, pumps, sewage tanks and soil treatment unit. Also known as a CLUSTER SYSTEM or COLLECTOR SYSTEM.
EASEMENT. A legal transfer of rights, privileges or uses of private property.
EQUIVALENT RESIDENTIAL UNITS (ERU). Wastewater charges will be established based on EQUIVALENT RESIDENTIAL UNITS (ERU). One ERU is defined as a unit of wastewater volume of 240 gallons per day with a theoretical waste strength of 300 mg/l of BOD, 200 mg/l of TSS and 50 mg/l O&G.
GARBAGE. Solid waste resulting from the domestic and commercial preparation, cooking and dispensing of food and from the handling, storage or sale of meat, fish, fowl, fruit or vegetables and condemned food.
HISTORIC VILLAGE SEWAGE TREATMENT SERVICE AREA (HVSTSA). The part of the city served by the publicly operated large subsurface/sewage treatment system as shown in the Comprehensive Plan.
INDIVIDUAL SUBSURFACE SEWAGE TREATMENT SYSTEM (ISTS) or ON-SITE SEWAGE TREATMENT SYSTEM.
(1) An individual sewage treatment system or part thereof, as set forth in M.S. §§ 115.03 and 115.55, as they may be amended from time to time, that employs sewage tanks or other treatment devices with final discharge into the soil below the natural soil elevation or elevated final grade that are designed to receive a sewage design flow of 5,000 gallons per day or less.
(2) ISTS includes the holding tanks and privies, but does not include any pump tanks used in a sewage collection system. ISTS does not include building sewers or other components regulated under Minn. Rules part 4715, or sewage collection systems.
INDUSTRIAL WASTES. The solid, liquid or gaseous waste resulting from industrial or manufacturing processes, trade or business or from the development, recovery or processing of natural resources.
INDUSTRY. Any nongovernmental or nonresidential user of a publicly-owned treatment works which is identified in the Standard Industrial Classification Manual, latest edition, categorized in Divisions A, B, D, E and I.
LARGE SUBSURFACE/SEWAGE TREATMENT SYSTEM (LSTS). A subsurface collection and sewage treatment system that employs sewage tanks or other treatment devices with final discharge into the soil below the natural soil elevation or elevated final grade and that is designed to receive sewage design flow of greater than 10,000 gallons per day.
NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface water or groundwater.
NORMAL DOMESTIC STRENGTH WASTES. Wastes which are characterized by a per capita discharge of 75 gallons per day at a loading of 300 mg per liter BOD, 200 mg per liter TSS and 50 mg per liter O&G.
O&G (also known as FOG). Oil and grease (or fat, oil and grease), a component of sewage typically originating from foodstuffs such as animal fats or vegetable oils or consisting of compounds of alcohol or glycerol with fatty acids such as soaps and lotions, typically expressed in mg/l.
OPERATION AND MAINTENANCE. Activities required to provide for the dependable and economical functioning of the treatment system, throughout the useful life of the treatment works and at the level of performance for which the treatment works were constructed. OPERATION AND MAINTENANCE includes replacement.
OTHER WASTES. Garbage, municipal refuse, decayed wood, sawdust, shavings, bark, lime, sand, ashes, oil, tar, chemicals, offal and all other substances except sewage or industrial waste.
PASSIVE MAINTENANCE. A maintenance program for community sewage treatment systems whereby the community in which the treatment system is situated is responsible for conducting operation, maintenance and replacement in a manner acceptable to the city.
pH. The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
SANITARY SEWER. A sewer which carries sewage and to which stormwater, surface water and groundwater are not intentionally discharged.
SANITARY WASTE. The liquid and water carried wastes discharged from sanitary plumbing facilities.
SEWER. A pipe or conduit for carrying sewage, industrial wastes or other waste liquids.
SEWER SYSTEM. Pipelines or conduits, pumping stations, forcemains and all other devices and appliances appurtenant thereto, used for collecting or conducting sewage, industrial wastes or other wastes to a point of ultimate disposal.
SLUG. Any discharge of water, wastewater 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 or flow during normal operation.
STATE DISPOSAL SYSTEM (SDS) PERMIT. Any permit including any terms, conditions and requirements thereof issued by the MPCA pursuant to M.S. § 115.07, as it may be amended from time to time, for a disposal system as defined by M.S. § 115.01, subdivision 5, as it may be amended from time to time.
SUSPENDED SOLIDS (TSS). 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 in accordance with the latest edition of Standard Methods for the Examination of Water and Wastewater.
TOXIC POLLUTANT. The concentration of any pollutant or combination of pollutants which upon exposure to or assimilation into any organism will cause adverse affects as defined in standards pursuant to § 307(a) of the Clean Water Act.
UNPOLLUTED WATER. Clean water uncontaminated by industrial wastes, other wastes or any substance which renders water unclean or noxious or impure so as to be actually or potentially harmful or detrimental, or injurious to public health, safety or welfare; to domestic, commercial, industrial or recreational uses; or to livestock, wild animals, birds, fish or other aquatic life.
WASTEWATER FACILITY. The structures, equipment or processes required to collect, convey and treat domestic and commercial waste and dispose of the effluent.
(Prior Code, § 12-1952) (Ord. 08-2010, passed 9-21-2010; Ord. 04-2015, passed 9-15-2015)