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Plumbing, Sewer and Drainage Investigation Report <br /> Investigation Company: <br /> Seattle Drain Service <br /> 1820 North 48th Street <br /> Seattle, WA 98103 <br /> (206) 632-8069 <br /> Subject Property: <br /> 621 Legion Ave, <br /> Everett WA 98201 <br /> • <br /> House Specifics <br /> Is there currently a backwater valve at this location: No <br /> Is backwater valve functioning properly: NA <br /> Is there currently a clean out on the side sewer: Inside commercial building a test plug <br /> opening <br /> How many at risk plumbing fixtures below the road surface are there: 2 toilet, sink <br /> How many down spouts are currently connected to the sewer: 0 <br /> Does side sewer have slope: Very flat approximately '/2% <br /> Depth of side sewer 10ft from house: 3 feet <br />