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Tony Lee <br /> From: Tim Markham <br /> Sent: Thursday, December 28, 2017 8:43 AM <br /> To: Tony Lee <br /> Subject: 1804 Hewitt (hodge Build) <br /> Tony <br /> The Hodge Building, according to my records does not have a Double check Valve Assembly(DCVA)for its premise on its <br /> domestic water. <br /> The requirements for a low hazard Multi-storied building (over 30 feet) is premise isolation by an approved double check <br /> valve assembly. <br /> The potential backpressure into the purveyor's distribution system that could be exerted by water in the customers <br /> plumbing system is <br /> a function of the height or elevation of the piping in the customers system. It is not necessary for the water distribution <br /> system pressure <br /> to fall to zero for backflow to occur. <br /> Thank you <br /> Tim Markham CCS <br /> City Of Everett <br /> (425)257-8833 <br /> tmarkham@everettwa.gov <br /> 1 <br />