For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning. If a word or term used in this subchapter is not contained in the following list, its definition or other technical terms used shall have the meanings or definitions listed in OAR Chapter 333 or the most recent edition of the Manual of Cross-Connection Control published by the Foundation for Cross-Connection Control and Hydraulic Research, University of Southern California (“USC”).
APPROVED BACKFLOW PREVENTION ASSEMBLY or BACKFLOW ASSEMBLY or ASSEMBLY. An assembly to counteract backpressure and/or prevent backsiphonage. This assembly must appear on the list of approved assemblies issued by the State Department of Human Services, Health Services.
AUXILIARY SUPPLY. Any water source or system other than the city water system.
BACKFLOW. The flow in the direction opposite to the normal flow or the introduction of any foreign liquids, gases or substances into the water system of the city.
CERTIFIED BACKFLOW ASSEMBLY TESTER. A person who has successfully completed and maintains all requirements as established by the Department of Human Services, Health Services to be a tester in the state.
CERTIFIED CROSS-CONNECTION CONTROL SPECIALIST. A person who has successfully completed and maintains all requirements as established by the Department of Human Services, Health Services to be a specialist in the state.
CITY WATER SYSTEM. The city water system, which shall include wells, treatment mechanisms or processes, pumping stations, reservoirs, supply trunk or feeder lines, service lines, meters and all other appurtenances, device lines and items necessary to the operation of the system and to supply water service to individual property or premises and shall include the city’s potable water with which the system is supplied.
CONTAMINATION. The entry into or presence in a public water supply system of any substance which may be deleterious to health and/or quality of the water.
CROSS-CONNECTION. Any physical arrangement where a potable water supply is connected, directly or indirectly, with any other non-drinkable water system or auxiliary system, sewer, drain conduit, swimming pool, storage reservoir, plumbing fixture, swamp coolers or any other device which contains, or may contain, contaminated water, sewage or other liquid of unknown or unsafe quality which may be capable of imparting contamination to the public water system as a result of backflow. Bypass arrangements, jumper connections, removable sections, swivel or changeover devices or other temporary or permanent devices through which or because of which backflow may occur, are considered to be CROSS-CONNECTIONS.
DEGREE OF HAZARD. The non-health hazard or health hazard or high hazard classification that shall be assigned to all actual or potential cross-connections.
DHS. Department of Human Services, Health Services.
DOUBLE CHECK DETECTOR ASSEMBLY or DCDA. An assembly which consists of two independently operating check valves which are spring-loaded or weighted. The assembly comes complete with a shut-off valve on each side of the checks, as well as test cocks to test the checks for tightness. It shall also be provided with a factory bypass arrangement with a meter and a minimum of an approved double check assembly.
DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY, DOUBLE CHECK ASSEMBLY, DOUBLE CHECK or DCVA. An assembly which consists of two independently-operating check valves which are spring-loaded or weighted. The assembly comes complete with a resilient seated shut-off valve on each side of the checks, as well as test cocks to test the checks for tightness.
HEALTH HAZARD. An actual or potential threat of contamination of a physical, chemical or biological nature to the public potable water system or the consumer’s potable water system that would be a danger to health.
MOBILE UNITS.
(1) Units that are temporary in nature, connecting to the water system through a hydrant, hose bib or other appurtenance of a permanent nature that is part of the city’s water system or a permanent water service to a premises. Examples can include, but are not limited to, the following: water trucks; pesticide applicator vehicles; chemical mixing units or tanks; waste or septage hauler’s trucks or units; sewer cleaning equipment; carpet or steam cleaning equipment other than homeowner use; rock quarry or asphalt/concrete batch plants; or any other mobile equipment or vessel that poses a threat of backflow in the city’s water system.
(2) Uses that are excluded from this definition are recreational vehicles at assigned sites or parked in accordance with other city policies pertaining to recreational vehicles and homeowner devices that are used by the property owner in accordance with other provisions of this, or other, city policies pertaining to provision of water service to premises.
NON-HEALTH HAZARD. The classification assigned to an actual or potential cross-connection that could allow a substance that may be objectionable, but not hazardous to one’s health, to backflow into the potable water supply.
OAR. Oregon Administrative Rule.
PERSON(S). A natural person (individual), corporation, company, city, partnership, firm, limited liability company, joint venture company or city and other such entity.
POINT OF USE ISOLATION. The appropriate backflow prevention within the consumer’s water system at or near the point at which the actual or potential cross-connection exists.
POLLUTION HAZARD. An actual or potential threat to the physical properties of the water system or the potability of the public or the consumer’s potable water system, but which would not constitute a health or system hazard, as defined. The maximum intensity of pollution to which the potable water system could be degraded under this definition would cause minor damage to the system or its appurtenances.
PREMISES. Any piece of property to which water service is provided, including, but not limited to, all improvements, mobile structures and other structures located upon it.
PREMISES ISOLATION. The appropriate backflow prevention at the service connection between the public water system and the premises. This location will be at or near the property line and downstream from the service connection meter.
PUBLIC WORKS FOREMAN. Supervisor of the Public Works Department.
REDUCED PRESSURE DETECTOR ASSEMBLY or RPDA. An approved assembly consisting of two approved reduced pressure backflow assemblies, set in parallel, equipped with a meter on the bypass line to detect small amounts of water leakage or use.
REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTION ASSEMBLY or REDUCED PRESSURE PRINCIPLE ASSEMBLY or RP ASSEMBLY. An assembly containing two independently-acting approved check valves together with a hydraulically-operated, mechanically-independent pressure differential relief valve located between the check valves, and at the same time, below the first check valve. The ASSEMBLY shall include properly located test cocks and two tightly closing shut-off valves.
RESIDENT. A person or persons living within the area(s) served by the city’s water system.
RETROFITTING. To furnish a service connection with parts or equipment made available after the time of construction or assembly installation.
SPECIALIST. A Department of Human Services, Health Services certified cross-connection specialist, either employed with the city or contracted by the city.
SUBMERGED HEADS. Irrigation sprinkling or delivery devices that are located below the surface of the landscaped area in which they are installed.
THERMAL EXPANSION. The pressure created by the expansion of heated water.
(Prior Code, § 53.51) (Ord. 412, passed 8-10-2009)