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<br />5.48 <br />Page 8 <br /> <br />D. Frequency otTesting. <br /> <br />Tests shall be made immediately upon the installation or relocation ot backflow <br />prevention assemblies and at least once per year thereafter. In those instances <br />where the Director determines there is a high degree of hazard, such as a <br />chemical plant, certified inspections may be required at more frequent intervals. <br /> <br />E. Test Failure. <br /> <br />For backflow prevention assemblies which fail to pass certified inspection or <br />operational testing, the customer-user shall, immediately after notification of test <br />results, provide for maintenance and repair of the assembly at their own expense <br />and have the assembly retested. <br /> <br />F. Approved Testers. <br /> <br />No person shall test or shall make reports on backflow prevention assemblies as <br />required in Title 17 of the California Administrative Code and this Article unless <br />such person has received a "Certificate of Competency" issued by the Director. <br /> <br />1. In order to ensure that testing of backflow prevention assemblies is <br />performed by technically competent individuals who are personally <br />responsible and, if other than self-employed, are employed by persons <br />and I or organizations which are also responsible, the Director is <br />authorized to require backflow prevention testers to show evidence that <br />such persons possess a valid contractors license, a Redwood City <br />business license, currently valid Backflow Prevention Testers Certificate <br />issued by the American Water Works Association for any persons who will <br />perform such tests and currently valid calibration certifications for any <br />differential pressure gauges to be used for the purpose of testing backflow <br />prevention assemblies. <br /> <br />2. The Director may conduct examinations to determine the competency of <br />any person desiring to test and make reports on backflow prevention <br />assemblies hereinbefore described. Those persons who have successfully <br />completed such an examination, and who have been determined by the <br />Director to be competent to test and make reports on backflow prevention <br />assemblies shall receive from the Director a "Certificate of Competency." <br /> <br />3. The approval procedures shall require each prospective tester to submit <br />an application to the Director providing such information as the Director <br />may determine to be reasonably necessary to establish the applicant's <br />technical competence and personal responsibility. The mrector shall <br />compile, and update no less frequently than annually, a list of the names, <br />business addresses and telephone numbers of alt approved testers and <br />shall make the current version of such list available to customer-users. <br /> <br />ATIY/ORD/ORD.305 <br />041608 <br /> <br />8 <br />