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HomeMy WebLinkAboutA-69, Cross-Connection AN ORDINANCE OF THE COMMON COUNCIL OF THE ~ CITY OF CARMEL, INDIANA, ADDING CHAPTER 9, ARTICLE 2, DIVISION III, SECTION 9-51, OF THE CARMEL CITY CODE WHEREAS, there exists the potential for harm to the health, safety and welfare of the citizens of the City of Carmel, Indiana due to cross-connection with the Carmel water supply system; and WHEREA~,. it is in the best interest of the citizens of the City of Carmel, Indiana, that certain rules and regulations be adopted regarding cross-connection with the Carmel water supply system; NOW, THEREFORE, BE IT ORDAINED by the City Council of Carmel, Indiana, that: Section 9-51 entitled "Cross-Connection Control" shall be added as 'follows: Definitions: a.) Air Gap - an unobstructed vertical distance through an atmosphere between the discharge end of a pipelfne supplied from a public water, supply and the overflow rim of the receiving portion of the customer's water system. b.) Backflow - the flow of contaminants into the public water supply distribution system from a source other than the public water supply. c.) Booster Pump - a pump installed on a pipeline to increase water pressure and flow. d.) Cross-Connection - any physical arrangement, including cross-connection control devices not in working order or not installed properly, whereby a public water supply distribution system is directly connected, either continuously or intermittently with any secondary source of supply, sewer, drain, conduit, pool, piping, storage reservoir, plumbing fixture or other device which contains, or may contain, and is capable of imparting to the public water supply, contaminants, contaminated water, sewage or other waste or liquid of unknown or unsafe quality. o O e.) cross-Connection Control Device - any device' 6r assembly, approved by the City of Carmel, Water Department, for construction on, or installation in water supply piping which is capable of preventing contaminants from entering the public water supply distribution system.. f.) Cross Connection Control Device Tester - a person who has successfully completed training in testing and inspection Of cr6ss connection'control devices at an agency or school acceptable to the Commissioner (IDEM) who has registered with the Commissioner (IDEM) and who has not been notified by the Commissioner (IDEM) or the city of Carmel that his work is unacceptable ~nder this Ordinance. g.) Cross Connection Hazard - any customer's facility which, 'because of the nature and extent of activities on the premises or the materials used in connection with the activities or stored on the premises, would present, an immediate or potential.danger or health hazard to · .customers~of. the public.'water supply should backflow -occur .... h.) ~: Customer-.-~any'person who receives water from a public · water supply. i.) customer Service Line - the pipeline from the public water supply to the first tap, fixture, receptacle or other point of customer water use; or.the first secondary source of supply or pipeline branch in a building. j.) customer Water System - all piping, fixtures and appurtenances including secondary sources of supply used by a customer to convey water on his premises. Double Check Valve Assembly - a device or assembly composed of two (2) tightly closing shut-off valves surrounding, two (2) independently acting spring' loaded check valves, with four (4) test cocks, one (1) up' stream of the four (4) valves.and one (1) between each of the four (4) check and shut-off valves~. Down stream -'the direction of flow when only the~ public water supply is supplying water through the customer water system and backflow is not occurring. © O O Pressure Type Vacuum Breaker -a chamber fitted with a spring-loaded air inlet for relieving a vacuum or partial vacuum in a pipeline. Public Water Suppl~ - any wells, reservoirs, lakes, rivers, source of supply, pumps, mains, pipes, facilities and structures through which water is obtained, treated as may be required, and supplied through a water distribution system to'at least one hundred (100) persons per day for drinking, domestic or other purposes, including State owned facilities. Oo Reduced Pressure Principle Backflow Preventer - a device composed of two (2) tightly closing shut-off valves surrounding two (2) independently acting spring loaded pressure reducing check valves which in turn surround an automatic pressure differential relief valve and four (4) test cocks, one (1) upstream of the five (5) valves and one (1) between each of the four (4) check and shut-off valves. The check valves effectively divide the structure into three (3) chambers; pressure is reduced in.each down-stream chamber allowing the pressure differential relief valve to vent the center chamber to atmosphere'should either · or both check valves malfunction. p.) Secondary Source of Supply - any well, spring, cistern, lake, stream or other water source, intake structure, pumps, piping, treatment units, tanks and appurtenances, used either continuously or intermittently, to supply water other than that from the public water supply to the customer, including tanks used to store water to be used only for fire 'fighting, even though the water contained therein is supplied from the public water supply. q.) Supplier of Water - any person who owns and/or operates a public water supply. r.) Upstream - the direction of flow opposite to downstream. II. CROSS-CONNECTIONS PROHIBITED a.) No customer shall cause or allow the construction or maintenance of a cross-connection. Piping installed to by-pass a cross connection control device constitutes a cross-connection unless the by-pass piping is also fitted with a similar cross-connection control device. bo No customer shall cause or allow the installation or maintenance of a booster pump in a customer water system unless a control device is installed to prevent operation of the booster pump when pressure to pump suction drops below twenty (20) pounds per square inch, gauge. Customers constructing a new facility which is designated a cross-connection hazard as defined in Indiana Administrative Code § 8-10-4(c) or making modifications to the customer service line or installing a higher capacity meter at an existing facility which is designated a cross-connection hazard or change of use that would be designated a cross-connection hazard by IAC 8-10-4(c), shall construct an air gap or install a reduced pressure backflow preventer in accordance with Subsection III, herein, on the customer service line to the facilities so designated. Existing Buildings - Ail existing buildings which house a business activity and are operated as such, will-be required to comply with this Ordinance upon the occurrence of any one of the following events: a. New ownership of building; b. Remodeling; c. Change of occupancy; d. Installation of a new service line or upgrade of service; e. Addition of machinery or chemicals; f. If backflow occurs Ail fire sprinkler systems must have an approved double check valve assembly installed before the fire systems apparatus. Any system that uses chemicals must install a reduced pressure backflow preventer, pursuant to Carmel Water Department specifications on file in the office of the Carmel Water Utility. No secondary source of water supply can be connected to customer's building with a water distribution system unless a backflow device is installed on the service line. Customers shall construct an air gap or install a reduced pressure principle backflow preventer or pressure type vacuum breaker in accordance with III. Subsection III, herein, on the water line connecting the public water supply to any land irrigation facility buried below ground which has a sprinkling outlet located less than six (6) inches above grade. All installations must comply with Carmel Water Department Specifications. CONSTRUCTION AND INSTALLATION REQUIREMENTS FOR AIR GAPS FOR OTHER DEVICES a.) The discharge pipe of an air gap shall terminate a minimum of.two pipe diameters of the discharge pipe or six inches, whichever is the lesser above the maximum record flood level or above the flood level rim of the receiving vessel, whichever is higher. b.) Only those models of double check valve assemblies, reduced pressure principle backflow preventers or pressure type vacuum'breakers approved by the Carmel Water Department are acceptable. .c.) Reduced pressure principle backflow preventers shall be installed horizontally, with no plug or additional piping affixed to the pressure differential relief valve port, and with the pressure differential relief valve port a.minimum of twelve (12).inches above floor level. Additionally, the device must be installed at a location where any leakage from the pressure differential relief port will be noticed, and that allows access to the device for maintenance and testing from floor level, so that it will not subject the device to flooding, excessive heat or freezing. d.) Ail double check valve assemblies shall be installed horizontally at a location that allows access to the device for maintenance and testing from floor level and that will not subject the device to excessive heat or freezing. e.) Pressure type vacuum breakers shall be installed as near as possible to the irrigation facility, at a location that allows access to the device for maintenance and testing from floor or ground level and that will not subject the device to flooding, excessive heat or freezing. Additionally, the device must be installed with it's center line or datum point a minimum of twelve (12) inches above floor level; the highest down stream shut-off valve; and the highest down stream overflow rim or discharge point. IV. INSPECTION OF DEVICES; TIME LIMITS a.) The customer shall install and maintain in working order at all times any cross-connection control device 6r booster pump control device required hereunder. All cross-connection control devices must be tested in accordance with this Ordinance. b.) To ensure that each cross-connection control device required is in working order, the customer shall h6ve each device inspected or tested by a cross-connection control device tester at the time of construction or installation and at the following intervals in the following manner: 1.) Air gaps shall be inspected at intervals not exceeding one year to ensure that they continue to meet the requirements. 2.) Reduced pressure principle backflow preventers shall be tested at intervals not exceeding six (6) months to ensure that both check valves are drip tight under all pressure differentials and that the pressure differential relief valve will maintain pressure in' the center chamber at least two (2) pounds per square inch below that of the inlet chamber. 3.) Double check valve assemblies shall be tested at intervals not exceeding one (1) year to ensure that both check valves are drip tight under all pressure differentials. 4.) Pressure type vacuum breakers shall be tested at intervals not to exceed six (6) months to ensure that the air inlet opens fully when water pressure is at or below atmospheric pressure. 5.) The customer shall permit access to his premises by the inspector and the supplier of water at reasonable times and upon presentation of identification, for inspection of the customer's water system or testing of cross-connection control devices installed in accordance with this Ordinance. c.) Ail cross-connection control device testers shall be registered with the Indiana Environmental Management Board. The testers shall report to Carmel Water Department on a'form, provided by the Carmel Water Department, the results of inspections or tests conducted pursuant to air gaps, reduced pressure principle, backflow preventers, double check valve assemblies and pressure type vacuum breakers. Reports shall be submitfed to the Carmel Water Department, the customer (and IDEM if they reques~ one) within thirty (30) days of the inspection or test. Before the installation of all land irrigation devices or in-ground automatic sprinkling systems, a permit must be obtained from the Carmel Water Department. The permit fee shall be Ten Dollars ($10.00). V. 'FINES ~'~violation of this ordinance set forth in Carmel City Code, section 1-11. The fine shall Shall be subject to fines. General Provisions, Chapter 1, not be less thah $100.00. Adopted this ficer ATTEST ~san ~w.~ J0nes~'-. C].-'~rk/~reasurer PRESENT~E.D-by me to>.~-he Mayor of the city of aCcel, Indiana on'the Mayo~ city of · ~n,W. Jones, Cler~reasurer Afterpproper'adver~isement and ~he required 30-day waiting period, this Ordinance will become in full force and effec~ at 12:01 A,M. Sunday, February 14, 993.