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Policy Manual- 4 CITY OF ~A~'~c "~`T~ TTT T ~ ATLANTIC BEAC~I CROSS-CONNECTION CONTROL "? POLICY MANUAL Revised Ma"rch "2000 i. TABLE OF CONTENTS ..1 TITLE PAGE INTRODUCTION ......................................................... ' 1 PART1-Overview .........................................................2 1.01 PURPOSE ................................................... .2 1.02 CAUSES OF BACKFLOW ....................................:..... 2 PAgT 2 Responsibility ..................................................... 3 2.01 CROSS-CONNECTION CONTROL PROGRAM ......................... 3 2.02 CUSTOMERS ....................'................................ 3 2.03 BACKFLOW PREVENTION DEVICE INSTALLERS ....................... 3 PART 3-lnspections .......................................................4 3.01 FREQUENCY .................................................... 4 3.02 PROPOSED CONSTRUCTIONS ....... ............................ 4 3.03 NEW AND EXISTING FACILITIES .................................:.. 4 PART 4 - Definifions .... ......................... ........ ............. 4 PART 5 -Cross-Connection Hazards and Required Protections .................... 7 5.01 FACILITIES. ........................ ' ....... .............. . ....... 7 5A2 FIRE SYSTEMS ................................................. 10 5.03 OTHER CROSS-CONNECTION HAZARDS ............................ 10 5.04 BACKFLOW PREVENTION DEVICES (Illustrated) ...................... 12 5.05 TYPICAL INSTALLATIONS (Illustrated) ............................... 15 PART 6 -Testing of Backflow Prevenfers ...................................... 21 PART 7 -Penalties for Non Compliance ....................................... 21 _ 7.01 TERMINATION OF SERVICE ....................................... 21 7.02 MONETARY PENALTIES ..................-:....................... 21 PART 8 -Pertinent O (1~ r`IT\/ OI O r17 /'~fTV 1A/ LJ~~ Q 117 /'ITV /~~ Section°2-146. Section 2-147. Section 2-148. Section'2-149. Section 22-32. 5ecfions of Loca! Codes ................................... 22 ~L 1"1 I A~~^7Tni' ~U-17~.rpT~R ('1 <1 /~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~~ ATC['~ AAfI'l_~=\AJCO n!'11"~I' ~lJl nTC_~`(~~ ~c~ A r1T'TI-'I~GT ~ .JII~ .C. T . n'~II ':Jurisdiction -' 22 Procedure; ;hearings 22 :Powers '22 Penalties; -lien _ 22 IConriection of private water systems to City system is prohibited 23 ~ # "` Section 22=33. :Prohibited acts 23 Section 22-42. Definitions 23 Section 22-43. Cross connections; back'tlo~s~ devices _.. ,.. 24 REFEREN~ES ......................................................... ~ 25 "'~ ~~ - > American Water Works Association POLICY ON CROSS-CONNECTIONS A statement adopted by Board of Directors on Jan. 26, 9970 and Revised June 24, 9979 The American Water Works Association. recognizes that the water purveyor has a responsibility to provide its customers at the service connection with water that is safe under all foreseeable circumstances. Thus, in the exercise of this responsibility, the water purveyor must take reasonable precaution to protect the community distribution system from the hazards originating on the premises of its customers that may degrade the water in the community distribution system. It is realized that cross-connection control and plumbing inspections on premises of its customers are regulatory in nature and should be handled through the rules, regulations, and recommendations of the health authority or the plumbing-code enforcing agencies having jurisdiction. The water purveyor, however, should be aware of any situation requiring inspection and/or re-inspections necessary to detect hazardous conditions resulting from cross-connections. If, in the opinion of the utility, effective measures consistent with the degree of hazard have not been taken by the regulatory agency, the water purveyor should take such measures as he may deem necessary to ensure that the community distribution system is protected from contamination. Such action would include the installation of a backflow prevention device, consistent with the degree of hazard, at the service connection, or discontinuance of the service. ~", INTRODUCTION Across-connection is defined in the rules of the Department of Environmental Regulation (DER), of the State of Florida, Chapter 17-22 as "Any physical arrangement whereby a public water supply is connected, directly or indirectly with any other water supply system, sewer, drain, conduit, pool, storage reservoir, plumbing fixture, or other device which contains or may contain contaminated water, sewage or other waste or liquid of unknown or unsafe quality which may be capable of imparting contamination to the public water supply as the result of backflow. By-pass arrangements, jumper connections, removable sections, swivel or changeable devices and other temporary or permanent devices through which or because of which backflow could occur are considered to be cross-connections." Consequently, either cross-connections or the chance of backflow must be eliminated to prevent degrading the high quality of water that water purveyors strive to maintain. Cross-connection control programs, as administered by water purveyors, are relatively new to Florida. Initially, the primary responsibility for safeguardirig water quality on private property was left to local health agencies and building and inspection departments. Then, beginning with the Safe Drinking Water Act, signed by President Ford on December 16, 1974, a chain of laws and regulations evolved that resulted. in_the State requirement (Florida Safe Drinking Water Act, Sections 403.850-403.864, Florida Statutes) for all the public water systems to have across- connection control program. Contained within the Rules of Department of Environmental Regulation (DER), Chapter 17-22, the State of Florida, on November 9, 1977, adopted the following policy: "Community wafer systems are required to establish a routine cross-connection program for the purpose of detecting and preventing cross-connections that create an imminent and substantial '' danger to the public health by and from contamination due to the cross-connection. Upon detection of a prohibited cross-connection, both community and non-community water systems shall either eliminate the cross-connection by installation of an appropriate backflow prevention device acceptable to the Department (DER) or discontinue service until the contaminate source is eliminated."(17-22.107(4)b., Florida Administrative Code.) This statement was later updated to include that "Such program shall be developed utilizing accepted practices of the American Wafer Works Association guidelines as set forth in AWWA manuals m74, `Backflow Prevention and Cross-Connection Control' and `Cross-Connections and Backflow Prevention' 2nd Edition." In compliance with this mandate, the following is the , Vy~TfC"~PP A'C~GI-'G7Gr~."J~'7OTJTOl7 City, of,:Atlantic rBeach;- :Publ.ic~ Works Department, ater Distribution Division's Policy on Cross-Connection Control. We urge you to acquaint yourself with the policies and information presented in this manual. It is only through the education and commitment of persons like yourself that we can control the hazards presented by cross-connections within our public drinking water supply. The Public Works Department stands behind this policy and its enforcement and will offer its assistance to all who share the responsibility of safe water. (1) .~ PART 1 -Overview 1.01 PURPOSE The purpose of this Policy is to protect the public potable water supply of the ' City of Atlantic Beach from the possibility of contamination.. To promote the elimination or control of existing cross-connections, actual or potential, between its customers' inplant plumbing fixtures and industrial piping and the public water supply; and to provide for the maintenance of a conti- nuing program of cross-connection control which will systematically and effectively prevent the contamination of the potable water distribution system. More exactly, the Policy is intended to prevent delivered water - water that has passed beyond the public water system and into the private distribution systems of consumers - from re=entering the public distribution system and being subsequently delivered to consumers and to allow persons active in piping design and installation to incorporate and install appropriate backflow prevention devices correctly. 1.02 CAUSES OF BACKFLOW The causes of backflow cannot usually be eliminated completely since backflow is often initiated by accidents or unexpected circumstances. However, some causes of backflow can be partially controlled. by good design and informed maintenance. Listed. below are the major causes of backflow as outlined under the two types of backflow - backsiphonage and backpressure. A. BACKSIPHONAGE - Backsiphonage is caused by reduced or negative pressure being created in the supply piping. The principal causes of backsiphonage are: ,1. Line repair or break which is lower than a service point. This will allow negative pressures to be created by water trying to flow to a lower point in the system. 2. Undersized piping if water is withdrawn from a pipe at a very high velocity, the pressure in the pipe is reduced and the pressure differential created can cause water to flow into the pipe from a contaminated source. 3. Lowered pressure in water main due to high water withdrawal rate such as fire fighting, water main flushing, or water main breaks. - 4. Reduced supply main pressure on suction side of a booster pump. B. BACKPRESSURE - Backpressure may cause backflow to occur where a potable water system is connected to anon-potable system of piping, and the pressure in the non-potable system exceeds that in the potable system. The principal causes of backpressure are: 1. Booster pump systems designed without backflow prevention devices. 2. Potable water connections to boilers and other pressure systems without backflow prevention .devices. w. (2) -~ 3. Connections with another system which may, at times, have a higher pressure. 4. Water stored in tanks or plumbing systems which by virtue of their elevation would create head sufficient to cause backflow if pressure were lowered in the public system. PART 2 -Responsibility 2.01 CROSS-CONNECTION PROGRAM The responsibilities of the Cities' Cross-Connection Control Program in accord with State Law Chapter 17-22 are as follows: 1. To protect the ~~-se~ti+i~e City of Atlantic Beach Public Water Supply from the possibility of contamination by isolating within its consumers' private water systems, contaminants or pollutants which could, under adverse conditions, backflow through uncontrolled cross-connections into the public water system. 2. To eliminate or .control existing cross-connections, actual or potential, between the consumer's in-plant potable water system(s) and non-potable water system(s) plumbing fixtures, and industrial piping systems. 3. To provide a continuing inspection program of cross-connection control, which will systematically and effectively control all actual or potential cross-connections which may be installed in the future. 2.02 ~ CUSTOMERS The customer's responsibility starts at the point of delivery from the public potable water system and includes all of his water systems. The customer, at his own expense, shall install, operate, test and maintain approved backflow prevention devices, as directed by the ' ' ' ' ' CityofAtlantic Beach Water Distribution~Divisron The customershallmaintain accurate records of tests and repairs made to backflow prevention devices and provide the ~Rfat~ `'~~ ~~~~~ ^~• •`~'~~ Wafer Distribution' DwrSiot~ with copies of such records. The records shall be on forms approved or provided by the ' ' ` Water Distribution Division. In the event of accidental pollution or contamination of the public or consumer's potable water system due to backflow on or from customer's premises, the owner shall promptly take steps to confine further spread of pollution or contamination within the customer's premises, and shall immediately notify the Water;Distribut~oh.Div-sion of the hazardous condition. 2.03 BACKFLOW .PREVENTION DEVICE INSTALLERS The installer's responsibility is to make proper installation of backflow prevention devices in accordance with the manufacturer's installation instructions and any additional instructions approved by the .. ' ' ' C-ty of Atlantic Beach, Public Works Department. -~ Installer is also responsible to make sure a device is working properly when it is installed, and is required to furnish the following information to the Cross-Connection Control Program immediately after a reduced pressure principle backflow preventer (RP), double check valve assembly (DCVA) or pressure vacuum breaker (PVB) is installed: 1) service address where device is located, 2) owner, 3) description of device's location and size, 4} date of installation, 5) type of device, 6) manufacturer, 7) model number, and 8) serial number. All RP, DCVA, and PVB are required to be tested following installation by a certified backflow prevention device technician. PART 3 -INSPECTIONS 3.01` FREQUENCY Due to changes in models or components of equipment, methods of manufacturing and additions to plants, buildings, etc:, water use requirements undergo continual change. As a result, new cross-connections may be installed and existing protection may be by-passed, removed, or otherwise ineffective; therefore, an annual or biennia! detailed inspection by the customer of all water usage is required. 3.02 PROPOSED CONSTRUCTIONS All new construction plans and specifications for industrial commercial facilities shall be reviewed by the ' ' ' City of Atlantic Beach's .Public Works Departrrient to determine the degree of possible cross-connections hazard. At this time, backflow prevention requirements in accordance with this policy will be made. 3.03 NEW AND EXISTING FACILITIES In order to determine the degree of hazard to the public potable water system, a survey will be made of the consumer's presently installed water system. This survey need not be a detailed in- spection of the location or disposition of the water lines, but can be confined to establishing the water uses on the premises, the existence of cross-connections, and the availability of auxiliary or used water supplies. On site inspections are made of new and existing facilities and should any devices or plumbing changes be required, afollow-up inspection will be made of the same facilities at a later date. PART 4 - DEFINITIONS AIR-GAP SEPARATION -The term air-gap separation shall mean a physical separation between the free-flowing discharge end of a potable water supply pipeline and an open or non-pressure receiving vessel. An approved air-gap separation shall be a distance of at least two (2) times the diameter of the supply pipe measured vertically above the top rim of the vessel - with a minimum distance of one (1) inch. APPROVED: Accepted by the Utilities Plant Division Director of the .Public Works Department as meeting an applicable specification of the Water ~~~ ~'~~~ ^ ~ ~~ Wafer Qist~~but~on Division and approved by the Department of Environmental Regulation, State of Florida, or their designee. E^, (4) -~ ATMOSPHERIC VACUUM BREAKER: An approved device consisting of a check valve and an air inlet to relieve a vacuum. It shall effectively shut off the reverse flow of water when a negative pressure exists on the supply side of the device. AUXILIARY WATER SUPPLY: Any water supply on or available to the premises other than the purveyor's approved public potable water supply. These auxiliary waters may include water from a private nonpotable water supply or any~natural source(s) such as a well, spring, river, stream, harbor, etc., or "used waters" or "industrial fluids". These waters maybe contaminated or they may be objectionable, and constitute an unacceptable water source over which the water purveyor does not have sanitary control. BACKFLOW: The flow of water or other liquids, mixtures or substances under pressure into the distribution pipes of a potable water supply system from any source or sources other than its intended source. BACKFLOW PREVENTION DEVICE: A backflow prevention device shall mean any effective device, method or construction used to prevent backflow into a potable water system. The type of device used should be based on the degree of hazard, either existing or potential. BACKFLOW PREVENTION DEVICE -APPROVED: The term approved backflow prevention device shall mean a device that has .met the requirements of one or more of the following standards: AWWA - C-506 ASSE - 1001 ~, ASSE - 1011 ASSE - 1020 ASSE - 1024 ASSE - 1013 ASSE - 1015 USC-F000 Standard for Backflow Prevention Devices, Reduced Pressure Principle and Double Check Valve Types. Atmospheric Type Vacuum Breakers Hose Connection Vacuum Breakers Pressure Type Vacuum Breakers Dual Check Type Backflow Preventer (Residential Use Only) Reduced Pressure Principle Back Pressure Backflow Preventers Double Check Valve Type Back Pressure Backflow Preventers University of Southern California Foundation for Cross-Connection Control and Hydraulic Research BACKFLOW PREVENTION DEVICE TECHNICIAN-CERTIFIED The term certified .backflow prevention device technician shall mean a person who has proven his competency to the satisfaction of the ~ City of Atlantic Beach's Public Works Department. Each person who is certified to make competent tests or to repair, overhaul and make reports on backflow prevention devices shall be conversant with applicable laws, rules and regulations and shall have attended and successfully completed the TREEO (Training, Resea_ rch, and Education for Environmental Occupations) Certification Program for Backflow Prevention Device Testers-at the University of Florida, or other acceptable programs to the ~ Public Works"Department. Due to frequent occupancy change,'a minimum commercialservtce requirement of Reduced Pressure,f~as been, implemented. (5) BACKSIPHONAGE: The flow of water or other liquids, mixtures or substances into the distributing pipes of a potable water supply system from any source other than its intended source caused by the reduction of pressure in the potable water system. BACKPRESSURE: Backpressure shall mean any elevation of pressure in the downstream piping system (by pump, elevation of piping, or steam and/or air pressure) above the supply pressure at the point of consideration which would cause or tend to cause, a reversal of the normal flow: ' p1VfSION DIRE"CTOR, WATER: DISTRIBUTION DIVISt~ON: `The ~Divi"sion Director of the Water Distribution Division of the .City of Atlantic Beach is invested with the authority _ and responsibility for the implementation of an effective cross-connection program and for the enforcement of the provisions of this policy. CONTAMINATION: An impairment of the quality of the potable water by any solid, liquid, or gaseous compounds or mixtures to a degree which would create an imminent danger to the public health, or would create an unacceptable taste, odor or color to the potable water. CROSS-CONNECTION: Any physical connection or arrangement of piping or fixtures between two otherwise separate piping systems, one of which contains potable water and the other non- potable water or industrial fluids of questionable safety, through which, or because of which, backflow or backsiphonage may occur into the potable water system. A water service connection between a public potable water distribution system and a customer's water distribution system which is cross-connected to a contaminated fixture, industrial fluid system or with potentially contaminated supply or auxiliary water system, constitutes one type of cross-connection. Other types of cross-connections include connectors such as swing connections, removable sections, four-way plug valves, spools, dummy sections of pipe, swivel or changeover devices, sliding multipart tube, solid connections, etc. DOUBLE CHECK VALVE ASSEMBLY: An assembly composed of two single, independently acting, check valves, including tightly closing shut-off valves located at each end of the assembly. *A valve that is drip-tight in the normal direction of flow when the inlet pressure is one p.s.i. and the outlet pressure is zero. The check valve shall permit no leakage in a direction reverse to the normal flow. The closure element (e.g., clapper) sha(I be internally weighted or otherwise internally loaded to promote rapid and positive closure and suitable connections for testing the watertightness of each check valve. HAZARD-DEGREE OF: The term degree of hazard is a qualification of what potential and actual harm may result from cross-connections within a water using facility. Establishing the degree of hazard is directly related to the type and toxicity of contaminates that could feasiblely enter the public water supply system and is determined by the ~"'~`~~ °~~ ' ~ ^' ' ' Water Distribution ,_, _. Division. HAZARD-HEALTH: The term health .hazard shall mean an actual or potential threat of con- tamination or pollution of a physical or toxic nature to the public potable water system or the consumer's potable water system to such a degree or intensity that there would be a danger to health. (6) INDUSTRIAL PIPING SYSTEM -CONSUMER'S: The term consumer's industrial piping system shall mean any system used by the consumer for transmission of or to store any fluid, solid or gaseous substance other than an approved water supply. Such a system would include all pipes, conduits, tanks, receptacles, fixtures, equipment and appurtenances to produce, convey or store substances which are or may be polluted or contaminated. REDUCED PRESSURE BACKFLOW PREVENTER: A device containing within its structure a minimum of two independently acting, approved check valves, together with an automatically operating pressure differential relief valve located between the two check valves. The first check valve reduces the supply pressure a predetermined amount so that during normal flow and at cesgation of normal flow the pressure between the check valves shall be less than the supply pressure. In case of leakage of either check valve, the differential relief valve, by discharging to atmosphere, shall operate to maintain the pressure between, the check valves less than the supply pressure. The unit shall include tightly closing shut-off valves located at each end of the device, and each device shall be fitted with properly located test cocks. VACUUM BREAKER -PRESSURE TYPE: A pressure vacuum breaker is similar to an at- mosphericvacuum breaker except that the checking unit "poppet valve" is activated by a spring. This type of vacuum breaker does not require a negative pressure to react and can be used on a pressure side of a valve. WATER PURVEYOR: The term water purveyor shall mean the owner or operator of the public potable water system supplying an approved water supply to the public. The utility shall be one that is operating under a valid permit from the Department of Environmental Regulation. As used herein the terms water purveyor and City's ' ' ' Water Distribution Division may be used synonymously. _ , _ , WATER SYSTEM -CUSTOMER'S: The term customer's water system shall include any water system located on the consumer's premises, whether supplied by a public potable water system or an auxiliary water supply. The system or systems may be either a potable water system or an industrial piping system. WATER-USED: Any water supplied by a Water Purveyor from a public potable water system to a customer's water system after it has passed through the point of delivery and is no longer under the sanitary control of the Water Purveyor. PART 5 -Cross-Connection Hazards and Required Protections 5.01 FACILITIES TYPE OF BACKFLOW PROTECTION REQUIRED: An approved backflow prevention device of the type designated shall be installed on each water service connection to the following types of facilities. This list is presented as a guideline and should not be construed as being complete. Abbreviations used are as follows: A.G. -Air-Gap Separation R.P. - Reducetl Pressure Principle Backflow Preventer D.C.V.A. -Double Check Valve Assembly P.V.B. - Pressure Vacuum Breaker A.V.B. -Atmospheric Vacuum Breaker (7) TYPE OF FACILITY ~~ MINIMUM TYPE OF PROTECTION Breweries, Distilleries, Boftling Plants Car Wash with recycling system and/or Wax Eductor Chemical Plants Dairies_ Dentist Office Fertilizer Plants Film Laboratory or Processing Plant Food or Beverage Plant Hospitals, Clinics, Medical Buildings Irrigation Systems Laboratories Laundries & Dry Cleaning Plants , Machine Tool Plants (Heaith or System Hazard) Machine Tool Plants (Pollutional Hazard) Metal Processing Plant (Health or System Hazard) Metal Processing Plant (Pollutional Hazard) Metal Plating Plant Morgues or Mortuaries Nursing Homes Packing Houses or Rendering Plants Paper Products Plant Pesticides (Exterminating Companies) Petroleum Processing Plant Petroleum Storage Yard (Health or System Hazard) Petroleum Storage Yard (Pollutional Hazard) Pharmaceutical or Cosmetic Plant Piers, Docks or Waterfront Facilities ,power Plants Radioactive Material Plants Restaurants with Soap Eductors and/or Industrial Type Disposal Sand and Gravel Plants Schools with Laboratories Swimming Pools with Piped Fill Line Sewage Treatment Plants Sewage Pumping Stations Tall Buildings over three stories - Veterinary Establishments D.C.V.A. R.P. R.P. O.C.V.A. R.P. R.P. R.P. D.C.V.A. * R.P. (Parallel) D.C.V.A.or P.V.B. R.P. D.C.V.A . *'` R.P. ** R.P. R.P. R.P. R.P. R.P. R. P. *** P.V.B. Overhead fill R.P. ** R.P. R.P. R.P. R.P. R.P. R.P. D.C.V.A. A.V.B. A.G. at pool R.P. P.V.B. * R.P. R.P. - In addition to and including those types of facilities listed above, an approved backflow prevention device of the type designated shall be installed on each domestic water service connection to any premises containing the following real or potential hazards. MINIMUM TYPE OF PROTECTION Premises having an auxiliary water system not connected to public R.P. ....water system Premises having a water storage tank, reservoir, pond, or similar R.P. appurtenance Premises having a steam boiler, cooling system, or hot water heating R.P. system where chemical water conditioners are used Premises having submerged inlets to equipment R.P. ($) .~ Premises having self-draining yard hydrants, fountains, hose boxes of R.P. similar devices presenting a health or system hazard. (i.e., chemical storage plants, tank farms, bulk storage yards) Premises having self-draining yard hydrants, fountains, hose boxes or D.C.V.A. similar devices presenting a pollutional hazard. (i.e., parks, play fields, cemeteries) Others specified by the Water Distribution Division * INSTALLATIONS REQUIRING CONTINUOUS SERVICE: PARALLEL INSTALLATION All backflow prevention devices with test cocks are required to be tested with a minimum frequency of once per year. Testing requires a water shutdown usually lasting five (5) to finrenty {20) minutes:. For facilities that require an uninterrupted supply of water, and when it is not possible to provide water service from two separate meters, provisions shall be made fora "paralleC installation" of backflow prevention devices. Multi-story buildings which have a number of flushometer toilets should be equipped with parade! devices. Experience has shown if the water supply is shut off to this type of building, flushometers may have to be manually reset. During testing one device is left on while the other is being tested. Usually the two devices are sized one device size smaller than the service line, e.g. one 2 inch device or two 1-1/2 inch devices, one 8 inch device or two 6 inch devices. The'"'~'~~ °~~~~~~~ ^~~•~~~~~ Wafe~~Distnbution~Division will not accept an unprotected bypass around a backflow preventer when the device is in geed of testing, repair or replacement. ` ., ** HEALTH HAZARD; SYSTEM HAZARD; POLLUTIONAL HAZARD "Health hazard" means any condition, device, or practice in a water system or its operation that creates, or may create, a danger to the health and well-being of users. The word "severe" as used to qualify "health hazard" means a hazard to the health of the user that could reasonably be expected to result in significant morbidity or death. "System hazard" means a condition posing an actual or potential threat of damage to the physical properties of the public water system or a potable consumer's water system. "Pollutional hazard" means a condition through which an aesthetically objectionable or degrading material not dangerous to health may enter the public water system or a potable consumer's water system. ***EXTERMINATING COMPANIES All tanks, tank trucks, and spraying. apparatus used to convey pesticides in an exterminating process are required to use only designated-protected potable water fill locations. Filling with potable water at unspecified locations or private residences is prohibited. All filling locations will consist of over-head piping arrangements with correctly installed pressure vacuum breakers. If, for any reason, an overhead piping arrangement cannot be used, a reduce pressure zone backflow preventer must be installed on the fill line. All filling locations must be approved by the tee ~,.~.:~~,. ^~~•~~~~~ Water Distribution Divisiort. {9) ..~ ` NOTE: Any device, equipment or situation not covered by this cross-connection policy where water is connected or used, which may constitute a potential health hazard, will be handled at the discretion of the water purveyor or his authorized agent. 5.02 -Fire Systems TYPE OF BACKFLOW PROTECTION REQUIRED -FIRE PROTECTION SERVICES An approved backflow prevention device of the type designated shall be installed on each fire protection service to any premises where the fire protection system contains any of the following components unless the Water Distribution Division determines that no real or potential health, pollutional, or system hazard to the public water system exists. Fire systems may be divided into. ,_ six (6) general classes. The following are typical: MINIMUM TYPE OF PROTECTION CLASS 1 a closed automatic fire system without pumper connection, i.e., a system having 20 heads or less; CLASS 2 a closed automatic fire system with pumper connection; CLASS 3 a closed automatic fire system with pumper connection and an auxiliary water supply on or available to the premises; or an auxiliary water supply which may be located within 1700 feet of the pumper connection; CLASS 4 a closed automatic fire system with a closed pressure tank supply (this class may have a jockey pump interconnected with the domestic water supply and/or an air compressor connection); ' CLASS 5 a closed automatic sprinkler system interconnected with an auxiliary water supply; CLASS 6 fire system used for the combined purposes of supplying the automatic sprinklers, hose lines, fire hydrants and standpipes and of being used for industrial purposes. (A) Self-Draining Fire Hydrants on premises presenting a health or system hazard (i.e., Chemical Plants, Petroleum Storage Plants, Bulk Storage Yards, Stock Yards, Sewer Plants, or similar facilities where ground seepage of toxic materials may occur. (B) Self-Draining Fire Hydrants on premises presenting a pollutional hazard (i.e., Apartment House, Office Complex, Fabricating Plants, or similar facilities where ground seepage of pollutional but not toxic materials may occur. 5.03 OTHER CROSS-CONNECTION HAZARDS 1 NONE D.C.V.A. R.P. R.P. R.P. R.P. R.P. D.C.V.A. FIXTURE INLETS OR VALVED OUTLETS with hose attachments, which may constitute a cross-connection, shall be protected by the proper approved vacuum breaker (AVB, HBVB, etc.) installed at least six (6) inches above the highest point of usage and located on the discharge side of the last valve. Fixtures with integral vacuum breaker manufactured as a unit may be installed in accordance with their approved requirements. (10) .. .~ 2. AIR CONDITION COOLING TOWER -Potable water inlet shall have an AG separation of twice the inside diameter of the inlet line or a minimum of two inches above the flood level rim. 3. ASPIRATORS AND EJECTORS -Shall have an AVB or PVB, depending upon the degree of hazard, on the faucet from which these devices are attached or operated. 4. BOOSTER PUMPS -All .booster pumps shall be provided with a low pressure cut-off unless other acceptable provisions are made to prevent the creation of low or negative pressures in the piping system. 5. PRIVATE WELLS -Shall not be interconnected unless the public supply is protected by an R.P. at the service connection, and approval is'given by the ' ' ~~ ^°• •'~'~•~.Clfilify Punt Dwision Director of the Water` Distribution .Division. 6. PORTABLE SPRAY AND CLEANING EQUIPMENT- Any portable pressure spray or clean- ing units that have the capability of connecting to any potable water supply and do not contain abuilt-in approved air-gap, should be fitted with a reduced pressure backflow device or double check valve assembly depending on the degree of hazard. 7. MISCELLANEOUS USES OF WATER FROM FIRE HYDRANTS -The operation of fire hydrants by other than authorized personnel is prohibited. The department may permit the use of water from a fire hydrant for construction or other purposes provided the applicant shall properly apply for, and adhere to backflow requirements on hydrant permit. NOTE: Any device, equipment, or situation not covered by this cross-connection policy, which may constitute a potential health hazard, will be examined for appropriate treatment by the Water Distribution Division or authorized agent. ' 5.04 Backflow Prevention Devices (Illustrated) •-~ AG -Approved Air-gap • good for toxic and non-toxic substances 2 Ttmea • good against backpressure ~ plameter and backsiphonage Flood Htm • a distance of 2-times the diameter of supply pipe, never less than a 1' gap • best protection against Overflow backfiow provided it is installed properly and not circumvented ~~ l.tr~ • ANS1 Standard No. At12.1.2 -~ From Coatirsq JaCScet Eic. --- Funnel y .. ~~ ~Fioor Drain AVB -Approved Atmospheric Vacuum Breaker Disc has high ' heat and water • good Sqr rnosf toxic and an hammer shock non-toxic substances re5lStanCe • good for backsiphonage ONLY • no control valves on discharge side of device • minimum of 6" betwebn base df device and highest outlet No Valves • no more than i2 hours Downstream continuous service in a day • sizes available: '/.' - 3 • ASSE Standard No. 1001 Atr Inlet - Dry Guide out of the l i q u i d . -.. pressure area - Full Size Orifice ~~~- assures pipe size - - ~'~ capacity - Base of devtca may he considered "crlilcal level" li not otherwise specified Disc Float durable and lightweight, closes vent with minimum flow i t .... 1 ~~ ~' I (12) Air Chamber PVB -Approved Pressure Vacuum Breaker • good for toxic and nontoxic Bonnet Seat ~\L substances ' • good for backsiphonage ONLY • can be installed under continuous pressure tvalves lest Cock II No 2 lO downstream) • Minimum of 12' between base of device and highest outlet ~ must be tested annually ' ' " " Cikck Vaire ~` /: (2 - • 2 • sizes available: '/: 10' not normally used) • ASSE Standard No. 1020 Test Cock • No. 1 u O U-- Hood Screws Gate Valve No. 1 ~ ,..~~Q~ -, Hood ~~,~...---- Bonnet Veni Disc ~I Disc (Holder) Float Body Check Valve Oisc ~ Gate Valve r\~,ni ~No.2 Check Valve Seat -~• ~, it ' HBVB -Approved Hose Bibb Vacuum Breaker • to be installed on all hose threaded faucets • good against backsiphonage and VERY t_OW backpressure • not to be subject continuous pressure •' ho more than 12 hours continuous service in a day • sizes: '/." • ASSE Standard No. 1011 Non-removeabie type have coif or breakable set screw. With loss of water supply, disc (1) seals tightly against diaphragm (2) preventing back- siphonage or backflow of water and opens atmospheric vents (3) (13) DCVA -Approved Double Check Valve Assembly • good for non-toxic substances such as steam, air, food, beverages • good against backslphonage and backpressure • installed minimum of 12" above ground or flood level • must be tested annually • sizes availabel: I/~' • 10" • ASSE StarFdard No. 1015 or AWWA Standard CSO6-78 -. rr?~ -- N4 Test ~- ~ !t3 Test ~1 ~ r•,...a, c- Cock ' tf1 Gate -~ ~ ~ Valve ~~~ r - ~- r li Direction ~ ~ I ~ ~ o I w of Fl , i t, lEl Tes! I r Cock L i ~`'~ M2Test ~ N1 Check- ~~ Cock Valve ~_ ~_~ i ~7 I -M2 Check L lt2 Gate Valve Valve J 1 -1 v ~+ ~s++~,, ~ t` 'i r RP -Approved Reduced Pressure Principle Backflow Preventer • good for toxic and non-toxic -, M3 Test M4 Tesi "^' substances ~.,; ; ~ ^ Cock Cock r= I . =I . • good against backsiphonage r ~ ~ - ~ -=-=, and backpressure ~ ~' •"'~ ~ ~ :1~ ~ fir' ~`' • installed minimum of 12" ~ .rl:.-: cni ~ t •• :~ ~1 _~~ ~ • above ground'or flood level N1 Gate ` ~ ~ '' ~ r ~ , • must be tested annuaNy Valve r l~i~ ~I~I~url I ;z ~ y ~`-~~~ ~;~- • sizes available: '!,' - t0' - ` t I y~ .*_' • ASSE Standard No. 1013 or ~ ~ I-~•"'~'" . ~ ~ ~ `~ a Direction ~~ 1 ~ ~~ ~~ )~; ~ I ~- r 5 F ~... AYVWA Standard CSO6-78 f ~l ~„ ~ .-, , r•~ .-~~ •.i i ~ l:, 'r S of Flow ~~* ~ ~ Uri i '~ 1 ` ~ , tt1 Test i ~ ~ •~' ~ i Cock ; •f N2 Test 81 Check ~~'~! , M2 Check ~-M2 Gaie Cock Valve ~; ~~~ _ Valve Valve :- ~; Pressure DHterentlat 5' ' _ _ Rellei Valve (14) . .. Dual Check Valves • ASSE Standard No. 1024 suited particularly for installations immediately downstream }rom residential water meters where poten- ' tial poilutanis trom residences could enter the water mains. (APPROVED FOR RESIUENT(AL USE ONLI~ ,r 5.05 TYPICAL INSTALLATIONS {ILLUSTRATED) Airgap Separation Butierily To Chemical Process Valve ar other Nonpotabte -, } Use Fixture ~'-~ _ Flood Level Rlm Il Potable 1Nater' ~ D~f Min.2}Diameters / I I ~. r r •r Surge tank and boozier pump. (15) "O" Ring 1st Check "O" R(ng 2nd Check Union Seai Module Union Seal Module ' Pressure Vacuum Breaker The pressure vacuum breaker cannot be installed where there can be backpressure only where there can be backsiphonage. The pressure vacuum breaker can have shut-off valves downstream of the device. The PVB must be installed at least 12' above the highest outlet or, if it is feeding an open tank, at least 12' above the highest overflow rim of the tank. The following figure shows a typical installation on a sprinkter system. Atmospheric Vacuum Breaker Just as the pressure vacuum breaker, the atmospheric vacuum breaker cannot be installed where there can be backpressure, only where there can be backsiphonage. The atmospheric vacuum breaker cannot have any shut-off valves downstream of it. It also must be installed at least 6' above the highest outlet or the topmost overflow rim.of anon-pressure tank. The following illustration shows the AV8 on a sprinkler system. ..~ V f~ 12' Minimum Above the Highest Outlet 1~ I Hosa Bib II - Fiov+ . Nota: Unit Cannot Hare Any Shut-Ott Downstream oflt. ~, &' Minimum Above Highest Outlet '1 '• ~ ( .. Flow ~' '' DUAL .CHECK BACKFLOW PREVEN~'ER Meter Box lnstaJlatian Curb ,-_~~:;i:. Valve ..............., w.~..J~ (FOR RESIDENTIAL USE ONLI~ Y _. ':: U O :=;: U DUAL CHECK 'S I < ° : ` Shut-ott Valve ~ ~To Residence '' ;. Meter Box '• ~~ '` (lb) r' L~ f' HOSE B1BB VACUU~11 BREAKER ~~ !a SEAVlCE SiNKiFAUCET WITH HOSE THREADS HOSE BfBB VACUUM . BREAKER TYPICAL INSTALLATION ON SERVICE SINKS, LAUNDRY TUBS, DEVELOPING TANKS AND 1NASHING MACHINES. ~"".~ , HOSE BIBS VACUUM HOSE 8188 VACUUM BREAKER • BREAKER // ' -- _ OUTSIDE YARD S?IGOT • •` ~' ~ • ~ .~ ~ / •' WITH HOSE 1N POLLUTED -•~} , ~.~... ~ -l ~ PUDDLE ,~ .. a - _. _ ~f~ v J• ~_~ _ TYPICAL INSTALLATION ON SILL COCKS, HOSE BIBBS, YARD HYDRANTS, SWIMMING POOLS, WASH RACKS AND ETHER FAUCETS WITH GARDEN HOSES. (i~) DOUBLE CHECK VALVE ASSEMBLY TYPICAL INSTALLATION I L ABOVE GROUND SHUT OFF VALVES GRADE ~ 1 a ' 12" MINIMUM ~ ~ FLOW O ~ FLOW O O O 3` DRAIN DISTANCE (NOMINAL , • -- _ SIZE OF DEVICE) --' l ~ y FINISH GRAD'' . ,. a ., ~ ~ o _ ° ~i I MODIFIED PIT _ (1F ABSOLUTELY NECESSARY) (ia) ~• REDUCED PRESSURE PRINCIPLE -• ~ BACKFLOW PREVENTION DEVISE TYPICAL INSTALLATION - SHUT OFF VALVES .. ~` FLOW b 6 ~ •. ~ ~ ~ RELIEF VALVE Y•TYPE DISCHARGE STRAINER (OPTIONAL) 12'+ PIPE DIAMETER FiNiSH GRADE (MINIMUM DISTANCE) ~I~i 1:/~r }I ~(•~!i f.•..••t~f~ ~.: ~ ~ r'.~r~1 !j'~. 1 l~!':~~ ~ 1 ,,~ 'i.,; /: r pit ~ ~ .~:,:1'i~.''~'~,~ - ~f, I •1 I ~-J 1 i 1 4 _ i l F ~ t _. ' ••! a 1 ~ '~ ~ • • DRAtN (NOMINAL `! ,. SIZE OF DEVICE) ABOVE GROUND • SHUT OFF VALVES (VALVES TURNED ON SIDE} ^~ FLOW { JOt ! L3 ~ ~ ~p~ BELIE= VALVE ~- DISCHARGE Y•TYPE STRAINER (OPTIONAL) 12'+ PIPE DIAMETER (MINIMUM DISTANCE) MODIFIED P!T (IF ABSOLUTELY NECESSARY) (19) a,. ~ , •~ • ~ //, f% ~ '~ i A ` T 12" MIN. FiNlSN GRADE MAlt+i INDOORS (lF ABSOLUTELY NECESSARY} w __ ~. 1~` ~~c ~= PARALLEL INSTALLATION Where continuous flow may be required even during times of servicing or testing, or where greater capacity than a single unit may be necessary, then two units connected In parallel are recommended. ' ~RrFR r-, ~~ ti (ZO) METER _2 a i i i ,~ NOTE: Single check valves will not be accepted as a means to protect the potability of drinking water and therefore may only be used to prevent backflow which would effect the functioning of a .plumbing system, such as to prevent recirculation of potable hot water. Where single check valves are improperly used, they will be required to be replaced by an appropriate approved backflow prevention device. VACUUM BREAKERS (vacuum relief valves) designed to prevent collapse or implosion of a steam- heated pressure vessel when being cooled are not acceptable devices for protection against backflow in potable water lines. PART 6 -Testing of Backflow Preventers It shall be the duty of the customer-user at any premises where reduce pressure backflow prevention devices (RP), double check valve assemblies (DCVA), and pressure vacuum breakers (PVB) are installed to have thorough inspections and operational tests made at least once a year or more often in those instances where inspections indicate a need. These inspections and tests shall be at the expense of the water user and be performed by the device manufacturer's representative, by Water Distribution Division personnel, or by a certified device technician. The water purveyor will notify the customer-user when tests are required and supply the necessary test forms and instructions. These forms will be completed and returned to the water purveyor by the date indicated. PART 7 -Penalties for Non-Compliance 7.01 TERMINATION OF SERVICE A written notification detailing all cross-connections found during the inspection will be sent to the owner or authorized agent of the owner of the building or premises, stating that corrections must be made and setting a reasonable time for compliance. Upon failure of the owner or authorized agent of the owner of the building or premises to have the defect(s) corrected by the specified time the water purveyor shall cause the water service to the building or premises to be terminated. The water purveyor shall cause discontinuance of water service if a required backflow prevention device has been bypassed or failed to be tested or properly maintained as required by this policy statement. The water purveyor shall also cause discontinuance of water service if an air-gap separation system is compromised. 7.02 MONETARY PENALTIES _ Violations of this policy, ;if not corrected after due notice, will`be referred to the Code`Enforcement :. :. Board of the Ci of Atlantic Beach. Under Florida State Statute 162.09, the Code'Enforcemenf tY... o _k ..~ Board„may Impose fnes,of up to $250.00. per,day for a first violation and $500.00 per da yfora repeat violation. (21) ,~ PART 8 -Pertinent Secfions of Local Codes Sec. 2-146.. Jurisdiction. (a) The' code enforcement board shall have the jurisdiction and authority to hear and decide alleged violations of the following: (1) City of Atlantic Beach Code of Ordinances; (2) Building codes, as adopted by the city; (3) Standard Housing Code, as adopted by the city; (4) State of Florida Health Code; ' (5) Florida State Statutes; and (6) State, county and local laws and ordinances whose intent is to promote the health, welfare and safety of the citizens of the city. (b) The jurisdiction of the code enforcement board shall not be exclusive. Any alleged violation of any of the provisions in subsection (a) may be pursued by appropriate remedy in court at the option of the administrative official whose responsibility it is to enforce that respective code or ordinance. (Ord.. I\TO. 95-80-21, § 3, 12-8-80; Ord. No. 95-85-26,.2-25-85; Ord. No. 5-96-27, § 1, 3-25-96) State law reference-=-lntent, F.S. § 162.02. Sec. 2-147. Pracedure; hearings. Enforcement procedure and conduct of hearings shall be as set forth in F Iorida Statutes Sections 162.06 and 162.07. (Ord. No. 95-80-21, § 4, 12-8-80; Ord. No. 5-96-27, § 1, 3-25-96) Sec. 2-148. Powers. _ The code enforcement board shall have the powers as set forth in Florida Statutes Section 162.08. -- (Ord. No. 95-80-21, § 5, 12-8-80; Ord. No. 5-96-27, § 1, 3-25-96) Sec. 2-149. Penalties; lien. Penalties and liens shall be as set forth in Florida Statutes Section 162.G9. (Ord. No. 95-80-21, § 6, 12-8-80; Ord. No. 95-85-26, 2-25-85; Ord. No. 5-96-27, § 1, 3-25-96) (22) .~ Sec. 22-32. Connection of private water systems to city system prohibited. No person shall interconnect a privately owned water system to the city's water system. (Code 1970, § 27-16) Sec. 22-33. Prohibited acts. No person shall connect or turn on any water service or tap or make any alteration to any main or distribution pipe of the city's water system or in any way interfere with or molest any of the wells, reservoirs, basins or water in the same, or permit any connection or tapping to be made to the city's water system on his premises or the premises occupied by him or knowingly use city water from unauthorized connections. (Code 1970, § 27-17) .' _. Sec. 22-42. Definitions. Cross connection means any physical arrangement whereby a public water supply is connected, directly or indirectly, with any other water supply system, sewer, drain, lawn sprinkler, conduit, pool, storage reservoir, plumbing fixtures, appliances, or other devices which contain or may contain contaminated water, sewage or other waste or liquid of unknown or unsafe quality which maybe capable of imparting contamination to the public water supply as the result of backflow. Bypass arrangements, jumper connections, removable sections, swivel or changeable devices and other temporary or permanent devices through which or because of which backflow could occur are considered to be cross connections. (Ord. No. 80-92-50, § 1, 10-12-92) Sec. 2.43. Cross connections; backflow devices. (a) No consumer of water from the city water system shall have a cross connection or potential cross connection either inside or outside of any building or buildings without a backflow prevention device being installed to prevent any and all backflow. (b) Only the following are considered to be backflow prevention devices and shall be installed in agreement with and under supervision of the supplier of water or his designated representative: (1) Air gap separation. A physical separation between the free-flowing discharge end of a potable water supply pipeline and an open or nonpressure receiving vessel. This gap must be at least double the diameter of the supply pipe. measuresd vertically above the rim of the vessel and in no care less than one (I) inch. (2) Reduced pressure back flow preventer. A device containing within its structure a min- imum of two (2) independently acting, approved check valves, with an automatically operating pressure differential relief valve located between the two (2) check valves that will discharge to the atmosphere if the check valves should fail. This unii shall include tightly closed shut-off valves located at each end of the device and each device shall be f tted with properly Iocated test cocks. (23) -. ~~. (3) Atmospheric vacuum breaker. This device is operated by atmospheric pressure in combination with the force of gravity. The unit is designed to work on a vertical plane only. The one moving part consists of a poppet valve which must be carefully sized to the slide in a guided chamber and effectively shut off the reverse flow of water when there is a negative pressure. (4) Pressure vacuum breaker. This. device is similar to an atmospheric vacuum breaker, eYCept that the checking unit "poppet valve" is activated by a spring and does not require a negative pressure to react. (5) Double check-valve assembly. An assembly composed of two (2) single, independently acting drip-tight check valves, including tightly closing shut-off valves at each end and suitable connections for testing the water tightness of esch check valve. (c) The city or its representatives with proper identification may enter at any time inside or outside of any building or buildings far the purpose of checking for cross connections. If a cross connection or potential cross connection is found, the city shall have the right to discon- tinue water services until the problem has been corrected by elimination or until a proper backflow prevention device has been installed. AlI backflow prevention devices will be checked .periodically by a city representative to insure proper operation. (d) These provisions relative to a cross connection have been established for the protection of all the inhabitants of the city and to comply with Chapter 17-22.107(4), Florida Adminis- ., trative Code. (e) All water services and plumbing fixtures shall conform to the latest edition of the City of Atlantic Beach Cross Connection Control. Policy Manual. (Ord. No. 80-92-50, § 1, 10-12-92) Secs. 22-44-22-55. Reserved. (24) ,.. REFERENCES "", "Accepted Procedure and Practice in Cross-Connection Control," Pacific Northwest Sec- tion, AWWA, 1973. Cincinnati Water Works -Division L-Cross-Connection Control and Water Quality Protec- t tion, Cincinnati, Ohio, November 18, 1974. "Cross-Connections and Backflow Prevention," A1~VWA, 1974 "Cross-Connection Control Manual," Division of Sanitary Engineering, Tennessee Depart- ment of Public Health, 1975. Cross-Connection Control Manual, U.S. Environmental Protection Agency, Washington, D.C., 1973. "Manual of Cross-Connection Control," Foundation for Cross-Connection Control and Hydraulic Research, University of Southern California, 1979. "Manual of Cross-Connection Control Policies" Tampa Water Department, Tampa, FIorida, June 1981. Public Law 93-523, "Safe Drinking Water Act," Dec. 16, 1974. ~,"""^ k- `Recommended Practice for Backflow Prevention and Gross-Connection ControI," AWWA Manual M I4, 1966. "Rules of the Department of Environmental Regulation, Chapter 17-22,"State of Florida, Department of Environmental Regulation, "Water Supplies ". Rules of the Department of Health and Rehabilitative Services, Division of Health, Chapter lOD-9, Plumbing, and Chapter lOD-4, Water Systems, State of Florida. (25)