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HomeMy WebLinkAbout1975-11-26 - Resolution No. 75-21RESOLUTION NO. 75-21 E RESOLUTION OF THE BOARD OF DIRECTORS OF YORBA LINDA COUNTY WATER DISTRICT AMENDING THE RULES 9 REGULATIONS REGARDING CROSS-CONNECTIONS WHEREAS, it has come to the attention of the Board of Directors of the Yorba Linda County Water District that a comprehensive outline to prevent cross-connection and backflow should be adopted, NOW, THEREFORE BE IT RESOLVED BY THE BOARD OF DIRECTORS OF THE Yorba Linda County Water District that Section "5.2 Protecting Cross-Connection" of the Rules and Regulations of the Yorba Linda County Water District with Regard to the Rendition of Water Service be revised and amended as follows: SECTION 5.2.1 PURPOSE: The purpose of this resolution is to protect the District water supply against actual or potential cross-connection by isolating within the premises contamination or pollution that may occur because of a cross-connection on the premises and comply with the Regulations of the State Department of Public Health contained in Title 17 of the California Administrative Code under,"Regulations Relating to Cross-Connection". It is the intent of this resolution to recognize that there are varying degrees of hazard and to apply the principle that the degree of protection should be commensurate with the degree of hazard. SECTION 5.2.2 DEFINITIONS: A. Approved Air-Gap Separation. The term "approved air=gap separation" means a physical break between a supply pipe and a receiving vessel and approved by the District. The physical break shall be at least double the diameter of the supply pipe, measured vertically above the top rim of the vessel, and shall in all cases be at least one inch. B. Approved Backflow Device. The term "approved backflow device" means a device tested and approved by the Foundation for Cross- connection Control and Hydraulic Research at the University of Southern California and acceptable to the District. To be approved, a device must be readily accessible for maintenance and testing. The term "approved backflow device" includes approved double check valve assembly, approved reduced pressure principle backflow protection ci vice, and approved air-gap separation. C. Approved Double Check Valve Assembly. The term "approved double check valve assembly means an approvF_,d backflow device consisting of at least two independently acting check valves including tightly closed shut-off valves on each side of the check valve assembly and suitable leak detector drains plus connections available for testing -the water tightness of each valve. D. Approved Reduced Pressure Principle Backflow Prevention Device. The term approved reduced pressure principle backflow prevention device" means an approved backflow device which incorporates two or more check valves and an automatically operating differential relief valve located between the two checks, two shut-off valves, and equipped with necessary appurtenances for testing. E.Approved Water Supply. The term "approved water supply" means any water supply approved by or under the supervision of a public health agency of the State of California and acceptable to the District. -1- y \ ` F. Auxiliary Water Supply. The term "auxi~j_ary water supply" means any water on or available to the premises other than the District after it has passed the service connection. G. Certified Tester. The term "Certified tester" means a person who has met the requirements of and has been certified by the Health Department of the County of Orange as qualified to inspect and maintain backflow prevention devices. A certified tester must also be acceptable to the District. The District may maintain and make available a list of persons qualified to inspect and main- tain backflow prevention devices. This list is provided as a con- venience only and should not in any way be considered as an endorse- ment of the water district. H. Cross-Qonn,~,ction. The term "cross-connection" means any real or potent al unprotected connection between any part of the District water supply and any other source or system containing water or substance that might cause a health, system or pollution hazard if it entered the District water supply facilities. I. Healt azard. The term "health hazard" means an actual or potential ~hreat of degradation of the District water supply to a degree or intensity that there is or may be a danger to health. J. Pollution Hazard. The term "pollution hazard" means an actual or potential threat to the potability of the public water supply or of physical damage to the District's water supply facilities which would not constitute a health or system hazard. K. Servi~ge Connection. The term "service connection" means the point where the consumer system meets the District's water supply facilities. L. System Hazard. The term "system Hazard" means an actual or potential threat of physical damage to the District's water supply facilities which would have a protracted effect on the quality of water in the system. SECTION 5.2.3 WHERE PROTECTION IS REQUIRED. A. Cross-Connections. Each service connection to premises where a cross-connection may exist shall be protected by an approved back- flow device unless the auxiliary water supply is accepted as an approved water supply. B. Internal Abatement. An approved backflow device need not be installed on service connections where cross-connections are abated to the satisfaction of the water district. C. Consumer Duty. The responsibility to provide, test and maintain protective devices as required by this Article rests with the water user. SECTION 5.2.4 TYPE OF PROTECTION: A. Criteria The type of approved backflow device shall depend upon the degree of hazard. The decision as to which device shall be used rests in the discretion of the District and shall depend upon the facts of each particular situation. In determining the degree of hazard and the type of approved backflow device required, the following criteria shall be used: 1. Health or System Hazard. An approved air-gap separation or an approved reduced pressure principle back-flow prevention device shall be used where there is an existing or potential health or system hazard. In cases where the existing or potential health or system hazard is determined by the District to be very remote, the District may allow other protection. 2. Pollution Hazard. A double check valve assembly may be used where there is an existing or potential pollution hazard. B. Guidelines. The following guidelines are established to im- plement the proceeding criteria: 1. Stri4ctu,reS of Three or More Stories. At the service connection to premises where there are structures of three stories or more in height, the District water supply shall be pro- tected by an approved backflow device. 2. RecirG'4~lating Water. At the service connection to premises containing recirculating water systems (hot or cold), the District water supply shall be protected by an approved back- flow device. 3. Five or More Units. At the service connection to any premises where there are multiple dwellings with five or more individual units being served through one metering system, the District water supply shall be protected by an approved backflow device. 4. Health or System Hazard From Auxiliary Water Supply. At the service connection to any premises where there is an aux- iliary water supply which may constitute a health or system hazard, an approved air-gap separation or an approved reduced pressure back- flow prevention device shall be installed. 5. Sewer~ae Treatment, etc. Fac~_ ties. At the service connection to any sewerage treatment plant, sewerage pumping station, or storm water pumping station, the District water supply shall be protected by an approved air-gap separation. The air-gap separation shall be located as close as practicable to the meter and all piping between the meter and the receiving tank shall be entirely visible. If, in the opinion of the District, an air-gap separation provides insufficient protection, the District may require installation of additional approved backflow devices or devices. 6. Ho pitals., Mortuaries, etc. At the service conn- ection to hospitals, medical buildings, mortuaries, and other premises where special hazards exist, the District water supply shall be protected by an approved reduced pressure principle back- flow prevention device. 7. Commercial or Industrial Buildings. At the service connection to premises containing commercial or industrial buildings subject to varying and unknown use because of changes in tenancy, the District water supply shall be protected by an approved backflow device. SECTION 5.2.5 INSPECTIQN OF BACKFLOW DEVICES: A. Annual Inspection by Certified Tf;,sti r. Backflow devices shall be inspected and certified operational at least once a year. All in- spections shall be conducted by a certified tester who shall prepare a report and certificate of operational readiness. B. Water Uses Duty. The water user shall cause annual inspections to be made at the expense of the water user. Defective devices shall -3- be repaired, overhauled or replaced at the expense of the water user. C. Reports. Reports of inspection and corrective measures shall be submitted to the District within ten days of the inspection by the certified tester along with his certificate of operational read- iness. D. More Frequent Inspection. Where successive annual reports indicate defective operation of a backflow device, the District may require more frequent inspection. E. Duty of Tester. The certified tester shall be responsible for the competency of inspections, corrective actions, and the accuracy of reports required under this section. F. District Inspection and Location of Backflow Device-It is the consumer responsibility to have the necessary backflow device in- stalled in a location which is readily available for periodic inspection. Upon 24 hour notice the District may at its option perform periodic inspection of a consumers backflow device. SECTION 5.2.6 REGULATIONS When it becomes necessary, on account of low pressure or special operating conditions, to install a booster pump on the service to any premises, such pump shall be equipped with a low pressure cut- off switch designed to shut-off the pump when the pressure on the inlet side is 25 p.s.i.g. or lower. It shall be the duty of the consumer to maintain the cut-off device in proper working order, and to certify to the District at least once a year that the device is operable. Low pressure cut-off device certification shall be by a person deemed competent by the District. SECTION 5.2.7 ENFORCEMENT : A. New Service Connections. No new service connections shall be completed until the provisions of this resolution have been complied with to the satisfaction of the District. B. Termination of Water Service. The District may immediately dis- continue service to any premises where a cross-connection or other hazard to the District's water supply is found to exist. Any user who violates any of the provisions of this article or alters, bypasses, or renders inoperat-imf~ any backflow >revent:iLon devz-e installed under the provisions of this chapter shall be subject to immediate termination of water service. Passed and Adopted this 26th day of November 1975 by the following called vote: Ayes: Clodt, Wagner, Lindow and Korn Noes: None Absent: Knauft Abstaining: None ATTEST: Secreta l OF BOOSTER PUMPS: President -4-