Agenda - Public Works Committee - 07/17/2012

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Slopes down to the east, away from the retaining wall, so there may be water present when the wetland is at normal elevation. There is an outlet pipe under TH 47, with an outlet structure that controls the water elevation in the wetland. The lowest opening of the outlet structure was approximately 2 1/2 feet above the normal water elevation of the wetland at the time the elevated water concern was reported last summer. This structure was quickly modified to lower the outflow elevation, in an attempt to alleviate the high water concern, and the invert from the wetland is now approximately 10 inches above the normal water elevation. For this project staff is proposing to remove the outlet control structure and 8 feet of pipe. We then propose to remove vegetation around this location, that may be impeding flow, and reinstall another section of pipe to create a flared end section outlet with an invert elevation of approximately 860 (the normal water level of the wetland). Motion by Councilmember McGlone, seconded by Chairperson Backous to go with staff's recommendation to modify the outlet structure to lower the wetland outfall elevation, placement of a flared end section, and removal of vegetation around the outlet pipe and to include change order for City Council consideration. Motion carried. Voting Yes: Chairperson Backous, Councilmember McGlone. Voting No: None. Absent: Councilmember Elvig. This will be brought forward as a separate case at the June 12th, 2012 City Council meeting. COMMITTEE INPUT ADJOURNMENT Motion by Councilmember McGlone, seconded by Chairperson Backous to adjourn the Public Works Committee meeting. Motion carried. The regular meeting of the Public Works Committee adjourned at 8:40 p.m. Respectfully submitted, Grant Riemer Public Works Superintendent Drafted by Mary Jo Warner City of Ramsey Public Works Secretary Public Works Committee / May 15, 2012 Page 7 of 7