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Page 1 of 2 <br /> <br />DATE: July 11, 2016 <br /> <br />TO: Honorable Mayor and City Councilmembers <br />Sue Iverson, Interim City Administrator <br /> <br />FROM: John Anderson, Acting Public Works Director <br /> <br />SUBJECT: Sanitary Sewer Repairs <br /> <br />Requested Action <br /> <br />Accept Proposal from Nova Frost Inc. for sanitary sewer repairs on Innovation Way and <br />Briarknoll Drive in the amount of $13,580. <br /> <br />Background <br /> <br />Staff has become aware of the need to repair the sanitary sewer system at two locations. The <br />first is along a sanitary sewer easement adjacent to Innovation Way. Boston Scientific is in the <br />process of building a skyway to connect two buildings on either side of Innovation Way, the <br />private street through the Boston Scientific Campus. As a precautionary measure, City staff <br />televised the sanitary sewer that crosses under this skyway and found a problem with the pipe. <br />The pipe is a 10 inch clay line that has a segment that has settled and created an offset joint. This <br />clay line would be a candidate for lining in the future but could not be lined until this offset joint <br />is corrected. Correction of this involves digging up the sewer and replacing the section of settled <br />pipe with a PVC pipe. <br /> <br />The second location is 1546 Briarknoll Drive. At this location, there is an 8 inch PVC pipe that <br />has a sag in the line about 25 long. This sag collects grease deposits and has led to a number of <br />backups over the years (1993, 2010 & 2016). The most recent backup occurred on June 5, 2016, <br />and caused damage at 1553 Briarknoll Dr. As a result of that backup, the League of Minnesota <br />Cities Insurance Trust is recommending corrective actions take place to minimize the risk of <br />future backups in this area. <br />AGENDA ITEM – 5C <br /> <br /> MEMORANDUM <br />