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UBL/L N/OrrXS <br />RE: Sewer Backflow Protection <br />Dear <br />You recently made an inquiry regarding sewer backflow protection. The Everett <br />Municipal Code requires all basements with drains or sewers where there exists the <br />imusual danger of "backup" from the public sewer system to lift their ?ischarge by <br />artificial means or install a backwater valve at the oude�. <br />Basement areas susceptible ro backup are typically those spaces whese floor ele�ation is <br />below the elevation of the abutting street or alley and located within the combined sewer <br />area as delineated on the enclosed map. <br />There are two generafly acceptable methods to control backup. Fr.�losed for your review <br />is information concerning the backwater valve and grinder pum� systems. Both systems <br />require maintenance by the homeowner with the backwater valve probably requiring more <br />maintenance th:u� the grinder pump system. Both installations cequire that a permit be <br />obtained from the Public Works Department secvice counter located on the second floor <br />at 3200 Cedar Strect. Installation of a backwater valve requires a$27 plumbing permit. <br />A grinder pump system requires a S30 sewer alteration permit, a�27 plumbing permit, <br />and a S35 electrical permit. <br />We hope this corresrondence will help clarify and p•.ovide guidance conceming this <br />issue. ThP !icensed plumber of your choice should be. able to review your situation, <br />answer your site specific questions and install the system of your choice with the <br />zppropriate permits. <br />Sincerely, <br />Larry Crawford <br />Eng/PuU Svs Ji�ector <br />LC:jd:backllow <br />CITY OF EVEREiT � 3=00 Cedar Street • EveretL WA 98201 •(425) 257-8800 • Fax (425) 257-8856 <br />