(A) The following uses shall be classified as hazardous uses:
(1) Hazardous uses include, but are not limited to: pumps and tanks handling sewage, radioactive, lethal, or toxic substances; boiler and steam connections; sewer waste lines; low inlets to receptacles containing toxic substances, coils, or jackets used as heat exchangers; flush valve toilets without vacuum breaks; bacterial and viral materials; private wells or other private water supply; irrigation systems, water systems, or hose connections with booster pumps; carbonation equipment; or similar hazard potential, as determined by the Public Utilities Director;
(2) Any location at which the nature or mode of operation within a premises are such that frequent alterations are made to the plumbing or at which there is a likelihood in the determination of the Public Utilities Director that protective measures may be subverted, altered, or disconnected; and
(3) A facility which contains, but is not limited to, a bottling plant, cannery, buildings that have five or more stories, battery manufacturer, exterminator, greenhouse, chemical processing plant, dairy, dye works, film laboratory, car wash, hospital, commercial laboratory, laundry, metal fabricating operation, mortuary, swimming pool, morgue, x-ray equipment, medical office with laboratory, aspirator, medical washing equipment, packing house, plating plant, poultry house, power plant, nuclear reactor, pumped fire sprinkler or riser system or those equipped with facilities for introduction of freeze preventive chemicals, or other substances other than water.
(B) All installations described in this section shall be deemed hazardous uses and must have a containment device in the form of a reduced pressure zone backflow prevention device, provided that, if the consumer demonstrates to the satisfaction of the Public Utilities Director that sufficient internal confinement devices have been installed and tested, the Public Utilities Director may require that the consumer provides engineering drawings sealed by a professional engineer of installations within the premises which provide complete internal protection against cross-connection, as approved by the Public Utilities Director. Any such connection shall be considered an “other connection” for the purpose of determining the type of containment device required. Each internal confinement device shall be one of the following, as approved by the Public Utilities Director or his or her authorized representative: reduced pressure zone principle backflow prevention device, double check valve backflow prevention device, air-gap, vacuum break-pressure type, or dual check valve. Each reduced pressure zone principle backflow prevention device serving as an internal confinement device shall have a mesh strainer immediately upstream of the inlet gate valve.
(Prior Code, § 51.101) (Ord. passed 8-10-1993) Penalty, see § 52.99