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OR BK 9999 PG 2131 Page 12 of 21 <br /> 56.18.2.4 COLOR CODING <br /> That all water lines carrying reclaimed or non-potable water shall he color coded purple. <br /> 56.18.3 BACKFLOW PREVENTION ASSEMBLIES AND APPLICATIONS <br /> 56.18.3.1 RESIDENTIAL DUAL CHECK VALVE ASSEMBLY <br /> A compact unit manufactured with two independent spring actuated check valves.The <br /> residential dual check is acceptable only as added backflow prevetition in areas served by reuse <br /> systems defined in Ordinance 17-610,Part III,F.A.C.,when the cross-connection control <br /> program identifies activities specific to(5)(a)and(5)(b)of Ordinance 17-610,Part III,F.A.C. <br /> 56.18.3.2 REDUCED PRESSURE ZONE(RPZ)ASSEMBLY <br /> This device may be utilized in a high hazard situation when either,backpressure or back- <br /> siphonage may occur. <br /> 56.18.3.3 DOUBLE CHECK VALUE ASSEMBLY(DCVA) <br /> This device may be used in a low hazard situation when either backpressure or back-siphonage <br /> may occur. <br /> 56.18.3.4 PRESSURE VACUUM BREAKER(PVB) <br /> This device may be utilized in a high hazard situation when back-siphonage may occur.This <br /> assembly is used primarily with lawn irrigation systems. <br /> 56.18.3.5 ATMOSPHERIC VACUUM BREAKER(AVB) <br /> This device may be used in back-siphonage situations only.Specific conditions must be met to <br /> insure the effectiveness of the installation. <br /> 56.18.4 INSTALLATION OF BACKFLOW PREVENTION DEVICES <br /> 56.18.4.1 LOCATION <br /> The primary location for all backflow assemblies shall be directly behind the water meter at the <br /> service connection.Alternate locations must be approved by the City. <br /> 56.18.4.2 INSTALLATION <br /> The City is responsible for installation of any and all required backflow prevention assemblies. <br /> The installation must be in accordance with the manufacturer's requirements and City <br /> specifications. <br /> 56.18.5 TESTING BACKFLOW PREVENTION ASSEMBLIES <br /> 56.18.5.1 REQUIREMENTS <br /> All reduced pressure zone,double check valve assembly,and pressure vacuum breaker backflow <br /> prevention assemblies will be tested annually by the City.The tests will be performed by <br /> certified backflow prevention technicians in accordance with procedures and guidelines <br /> established by the University of Southern California Foundationlfor Cross-Connection Control <br /> and Hydraulic Research.A backflow prevention assembly will be considered noncompliant if the <br /> device fails to meet minimum requirements set forth by this agency. <br /> 56.18.5.2 TEST RESULTS <br /> Test results will be available to the consumer upon request. <br /> 56.18.6 REPAIR AND MAINTENANCE OF BACKFLOW PREVENTION ASSEMBLIES <br /> 56.18.6.1 REPAIRS <br /> -12- <br />