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<br /> <br /> <br /> <br /> <br />MEMORANDUM <br /> <br /> <br />DATE: July 18, 2016 <br /> <br />TO: Susan Iverson, Interim City Administrator <br /> <br />FROM: John Anderson, Acting Public Works Director <br /> <br />SUBJECT: Sewer lining projections <br /> <br /> <br />The City of Arden Hills has been working towards eliminating sanitary sewer inflow and <br />infiltration over the last 20 or so years. To date we have lined 66,072 feet of sewer. Table below <br />shows the amount lined in previous projects. <br /> <br />Lining <br />History <br /> Year Lf of sewer <br />2004 6363 <br />pre 2006 2248 <br />2009 1980 <br />2010 4763 <br />2011 15152 <br />2013 23998 <br />2015 11568 <br />Total 66072 <br /> <br />As of 2016 the sanitary sewer system is comprised of the following pipe materials: <br /> <br />Sanitary system materials & lining candidates <br /> Material Length (ft) % of system Lining <br />candidates <br />CIP 47 0.02% <br />HDPE 512 0.21% <br />Lined CIPP 66,589 27.67% <br />PVC 97,489 40.51% <br />RCP 15,362 6.38% 15,362 <br />Unknown 6,322 2.63% 6,322 <br />VCP 54,325 22.57% 54,325 <br />Total 240,646 76,009