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(2) All residences, building, structures or facilities that use an auxiliary water supply, <br />such as a private well, a rainwater -harvesting system, or pump water directly from <br />any impounded water source or any water supply other than potable water <br />supplied by the city distribution system, must install an RPZ at the meter connection <br />or provide an air gap. <br />(3) No backflow protection at the water service meter is required where an adequate <br />internal cross -connection control program is in place provided that the cross - <br />connection control program is documented by a state licensed master plumber or <br />water -supply -protection specialists. <br />(d) Requirements. <br />(1) On new installations, the building safety department will review owner provided <br />plans, which shall be completed by a professional engineer or licensed master <br />plumber. Upon approval of plans the building safety department will issue a permit, <br />and perform inspections. In any case, a minimum of a dual check valve will be <br />required in any new residential construction. Before plumbing final will be <br />approved, device shall be tested by an approved third -party backflow tester and <br />register with the compliance engine. <br />(2) For premises existing prior to the start of this program, the building safety <br />department will perform evaluations and inspections of plans and/or premises and <br />inform the owner by letter of any corrective action deemed necessary, the method <br />of achieving the correction, and the time allowed for the correction to be made. <br />Ordinarily, ninety (90) days will be allowed, however, this time period may be <br />shortened depending upon the degree of hazard involved and the history of the <br />device(s) in question. <br />(3) The building safety department will not allow any cross -connection to remain <br />unless it is protected by an approved backflow preventer device for which a permit <br />has been issued and the device registered with The compliance engine, the city's <br />electronic reporting system, and regularly tested to insure satisfactory operation. <br />(4) The building safety department shall inform the owner by letter, of any failure to <br />comply, by the time of the first re -inspection. The building safety department will <br />allow an additional fifteen (15) days for the correction. In the event the owner fails <br />to comply with the necessary correction by the time of the second reinspection, the <br />building safety department will inform the owner by letter, that the water service <br />to the owner's premises will be terminated within a period not to exceed five (5) <br />days. In the event that the owner informs the building safety department of <br />extenuating circumstances as to why the correction has not been made, a time <br />extension may be granted by the department but in no case will exceed an <br />additional thirty (30) days. <br />