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04-C Cross-Connect/BackflowAGENDA INFORMATION SHEET PROJECT: Consider an ordinance amending Article II to Chapter 25 ofthe Code ofOrdinances ofthe City of Paris, the Plumbing Code, to revise various sections of said code dealing with cross-connection and backflow prevention to conform to regulations and requirements imposed by the Texas Natural Resource Conservation Commission (TNRCC). BACKGROUND: The Texas Natural Resource Conservation Commission has mandated certain requirements dealing with cross-connection and backflow prevention which prohibit any connection to a public water system where an actual or potential contamination hazard exists unless the public water system is protected from the contamination hazard. During the recent Sanitary Survey of the City of Paris water system, the TNRCC determined that the current Article II to Chapter 25 of the City of Paris Plumbing Code does not adequately identify all customers with actual or potential contamination hazards and thus the public water system is not fully protected from such hazards. DESCRIPTION: The proposed ordinance would amend Article II to Chapter 25 of the Code of Ordinances ofthe City ofParis, the Plumbing Code, to require all water customers engaged in certain activities which pose an actual or potential contamination hazard to the public water system to install and maintain approved backflow prevention devices attheir own expenses. Furthermore, these devices shall be tested upon installation and tested annually thereafter to insure proper operation. All backflow prevention devices shall be tested by a state certified, and City permitted, backflow prevention device tester, and reports of these tests shall be submitted to the City. The costs of testing and submittal of information is the responsibility of the customer. Adoption of the proposed amendments to Article II to Chapter 25 of the Plumbing Code will allow the City of Paris to comply with the rules and regulations for public water systems of Title 30, Texas Administrative Code, Sec. 290.44(h), concerning backflow prevention, insure a safe potable water supply to the water customers of the City of Paris, and avoid further enforcement action by the TNRCC. RECOMMENDED ACTION: Adoption of the proposed ordinance. STAFF CONTACT: Rodney Brashier, Environmental Services Supervisor; Herb Campbell, Director of Utilities; Larry W. Schenk, City Attorney COSTS: Failure to comply with TNRCC rules and regulations for public water systems is aviolation ofthe Texas Administrative Code and the Texas Health and Safety Code resulting in possible fines and administrative and civil penalties, as well as loss of status as a Superior Water System. COUNCIL DATE: Consider for approval at City Council's April 8, 2002, regular Council meeting. ADDITIONAL MATERIALS: See enclosed ordinance and other supporting documentation. What is Backflow and what are Cross-Connections? The term backflow means any unwanted reverse flow of used or non-potable water or subsk-uice from any domestic, industrial or institutional piping system into the safe and clean, potable (drinkable) water distribution system. Backflow may be caused by any number of specific conditions; but basically the reverse pressure gradient is typically caused by either a loss of pressure in thc supply main called backsiphonage, or by pressurized flow from the customer s system, Nchich is called backpressure. When either of these situations occurs in an unprotected system, the water at the point of use can pollute or contaminate the remainder of the wstomer's system. It is also quite possible for this backflow of contaminated water to coniinue on through the customer's meter into the public distribution system creating a potential health hazazd to others. The point at which a non-potable substance can come into contact with the potable drinking water system is known as a cross-connectioa To prevent backflow from occurnng at the poin[ of a cross-connecUoq a backflow prevention assembly must be installed. The type of backflow prevention assembly used must match the particular hydraulic condiuons at that location and be suitable to protect against the degree of hazard present. Some condiUOns require a backflow prevention device on the incoming water line to the entire facility and this form of protection is known as premises isolation. Other conditions require backflow prevcntion devices at Ihc point of the cross-connection and this form of protection is kno«m as internal protection. In many situations, botli forms of backflow protccdon are required to protect both the customer's system and the public water supply system. Types of Backflow Prevention Devices Reduced Pressure Principal Assembly (RP or RPBA): This assembly consists of rivo internally loadcd independcntly opcrating check valves and a mechanically independent, hydraulically depcndant relief valve locatcd bcRvccn the eheck valves. Provides protection against both backsiphonage and backpressure under all hazard condiTions. Double Check Valve Assembly (DC or DCVA): This assembly consists oftrvo internally loaded independently operaUng check valves. Provides protection against both backsiphonage and backpressure but is not considered adequate protection under health hazard conditions. Air Gap (AG): A physical separation between the potable water supply line and the receiving vesscl. Thc air gap scparation must be at least hvice the diameter of the supply line above the receiving vessel with a minimum separadon of one inch. Provides proteclion against both backsiphonage and backpressure under all hazard conditions. ln a pressurized system, an air gap is not feasible and a Reduced Pressure Principal Asscmbly (RPBA) must bc used. An air gap is the only acceptable means of protcction against a direct comiection to radioactive material or sewagc. Pressure Vacuum Breaker (PVB): This assembly consists of an internally loaded check valve vnd a loaded air inlet valve. Providcs protection against backsiphonage only and cannot bc used in situations subject to backpressure. Atmospheric Vacuum Breaker (AVB): This assembly consisu of a"float check" which acts as a check valve and an air inlet valve. Provides protection against backsiphonage only and cannot be used in situaUOns subject to backpressure. The AVB must be installed at least six inches above all downstream piping and outlets to preven[ backpressure. NOTE: Simple Double Check Valves and Single Check Valves are not testable assemblies and are oot approved for protection against any backflow conditions. DRAFT J:WttorneyW.ICEVORDWO~CURRENT~acINOwPreveutionOrtl Final.wptl ApN 5, 2002 ORDINANCE NO. AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF PARIS, PARIS, TEXAS, AMENDING ARTICLE II TO CHAPTER 25 OF THE CODE OF ORDINANCES, THE PLUMBING CODE, TO REVISE VARIOUS SECTIONS OF SAID CODE DEALING WITH CROSS-CONNECTION AND BACKFLOW PREVENTION TO CONFORM WITH REGULATIONS AND REQUIREMENTS IMPOSED BY THE TEXAS NATURAL RESOURCES CONSERVATION COMMISSION; REPEALING OTHER PRIOR INCONSISTENT PROVISIONS; MAHING OTHER FINDINGS AND PROVISIONS RELATED TO THE SUBJECT; AND DECLARING AN EFFECTIVE DATE. WHEREAS, the City Council of the City of Paris, Paris, Texas, has previously adopted Article II to Chapter 25 of the Code of Ordinances, entitled Plumbing Code, regulating various aspects of the installation of plumbing fixtures in the City of Paris; and, WHEREAS, included as a portion of said Code, beginning with the definitions set out in Section 25-20 and continuing with Section 25-22 and Section 25-23, are provisions enacted to control and prohibitcross-connections and backflow through the various water connections in the city ofParis to prevent contamination of the City's water system and to preserve the quality of the City's water; and, WHEREAS, various portions of the backflow prevention requirements are established by State law, and the City's current ordinance should be revised to reflect amendments to said state law; and, WHEREAS, the City Council finds and determines that such amendments are necessary to conform and comply with State law and to preserve and protectthe health, safety, and welfare ofthe City's water supply and the citizens of the city of Paris; NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF PARIS, PARIS, TEXAS: Section 1. That the findings set out in the preamble to this ordinance are hereby in all things approved. Section 2. That Section 25-22(1) of Article II, Chapter 25 of the Code of Ordinances, Plumbing Code, shall be and is hereby amended to read as follows: "Sec. 25-22. Cross-connection Control. (1) For each backflow prevention device on private property, except irrigation double checks, the owner of such device shall register said device with the City annually. The Utilities Division of the City of Paris shall keep a current inventory of all devices except irrigation devices and a record of all annual inspections provided on said devices. Each owner of such device shall be and is hereby required to have said devices tested annually at the owner's expense by a certified backflow prevention device tester who is also registered with the City. The owner shall be required to maintain copies of said test results and maintenance reports for a period of at least five continuous years, and the owner shall also provide a copy ofthe testresults for each annual test as well as said maintenance reports to the City of Paris Water Utilities Deparhnent. The fee for registering said test results shall be established by resolution of the City Council." Section 3. That Section 25-22(m) of Article II, Chapter 25, Plumbing Code, of the Code of ordinances of the City of Paris shall be and is hereby amended to read as follows: "Sec. 25-22. Cross-connection Control. (m) All certified backflow prevention device testers installing, repairing, or testing devices within the city ofParis shall be registered with the City ofParis Utilities Division. Such registration shall be on an annual basis, accompanied by a payment of an annual registration fee established by resolution ofthe City Council." Section 4. That Section 25-23(b) of Article II, Chapter 25, Plumbing Code, of the Code of Ordinances of the City of Paris shall be and is hereby amended to read as follows: "Sec. 25-23. Backflow prevention device installation requirements. (b) An approved backflow prevention device shall be installed in a facility if any of the following applications are utilized in the structure being supplied water by the City of Paris water system: 1. Aircraft 2. Amusement Parks 3. Aniinal Feedlots 4. Aspirators 5. Autoclaves 6. Automorive Plants 7. Automated Filxn Processors 8. Autopsy Facilities 9. Auxiliary Water Systems 10. Bedpan Washers 11. Beverage Bottling Plants 12. Boilers (large) 13. Breweries 14. Buildings with sewer ejectors or pumps 15. Buildings with water storage tanks, or non- potable water sources 16. Canneries 17. Car Wash Faciliries 18. Carbonated Drink Fountains 19. Cement and Concrete Mixing 20. Centralized Heating, and Air Condirioning Plants 21. Chemical Plants, Chemical Plants, Manufacturing, or Processing 22. Chemical Treatment Lawn Applicarion Systems 23. Chemically Treated Fire Sprinkler Systems 24. Clinics, dental, medical, veterinary 25. Cold Storage Plants 26. Colleges 27. Commercial Laundries and Laundromats 28. Convalescent and Nursing Homes 29. Cooking and Heating Systems 30. Cooling Towers 31. Connecrion to Sewer Pipe 32. Creameries 33. Cuspidors 34. Dairies 35. Degreasing Equipment 36. Dental Buildings 37. Dry-Cleaning Processing 38. Dye Works 39. Domestic Space-Heating Boilers 40. Fabricating Plants 41. Facilities using Radioactive Materials 42. Filxn Laboratories 43. Fire-FigJiting System (toxic liquid foam) 44. Flexible Shower Heads 45. Food and Beverage Processing ar Canning Operations 46. Gas Production Properties, Storage, or Transmission Facilities 47. Gravel Plants 48. Holding Tank Reservoirs 49. Hospitals 50. Hose Bibbs 51. Industrial Process where water is used to clean or manufacture products 52. Irrigation Systems 53. Kitchen Equipment - Commercial 54. Laboratories 55. Landscape Nurseries 56. Manufacturing Plants 57. Marinas 58. Meat Processing or Packing Operation 59. Medical Clinics 60. Metal Cleaning, Plating, Processing Industries 61. Metal Fabricating Plants 62. Missile and Explosives Plants 63. Morgues 64. Morhxaries 65. Motion Picture Studios 66. Ornamental Fountains 67. Paint and Body Shops (Automorive & Boat) 68. Paper and Paper Products Plants 69. Petroleum Processing or Storage Operations 70. Photo and Filxn Processing 71. Radiator Repair Shops 72. Restricted, Classified, or other Closed Facilities 73. Rubber Processing Plants 74. Sanitariums 75. Sewage Lift or Crnnder Starions 76. Sewage Treatment Plants 77. Shampoo Basins 78. S1augJiter Houses 79. Specimen Tanks 80. Steam Generating Operations 81. Solar Energy Systems 82. Swimmiiig Pools 83. Tanks or Vessels Containixig Toxins 84. Veterinary Clinics 85. Tall Buildings with Elevation Difference 80 ft or more above meter 86. Trap Primers 87. Vending Machines with Water 88. Watering TrougJi In some applications not listed above, an approved backflow prevention device may be required by the Water Utilities Superintendent and/or Chief Building Official." Section 5. All other terms or provisions of the Code of Ordinances of the City of Paris in conflict with the terms and provisions of this ordinance shall be and are hereby repealed to the extent of such conflict only. Section 6. All other terms and provisions of Article II of Chapter 25 of the Code of Ordinances of the City of Paris, except as amended herewith, shall remain in full force and effect. Section 7. That this ordinance shall be effective beginning May 1, 2002. PASSED AND APPROVED this 8th day of April, 2002. Michael J. Pfiester, Mayor ATTEST: Mattie Cunningham, City Clerk APPROVED AS TO FORM: Larry W. Schenk, City Attorney