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West Vadnais Inter-Agency Meeting September 24, 2003 Meeting Notes Attendees: Ken Haider, Terry Noonan -Ramsey County Public Works Bernie Bullert, Jim Bode, Jim Graupmann - St. Paul Regional Water Greg Schroeder - City of Little Canada Marc Goess, Jeff Gibbens, Scott Carlstrom - MnDOT Brad Lindaman -Barr Engineering/ Ramsey-Washington Metro WD Matt Wassman - TKDA/ `unweave' project hydrology design MEETING PURPOSE: Followup to July 29, 2003 and August 21, 2003 meetings. RESULTS: 1. Matt Wassman will. submit survey request to Mn/DOT as soon as possible, to include the outlet ditch at old Knox/Levitz. Greg Schroeder will provide to TKDA "as builts" for culvert at south end of the outlet ditch. The control elevation needs to be confirmed by survey. Possible modification of the ditch area. for water quality benefits will be evaluated by TKDA. 2. Pipe size for the proposed West Vadnais outlet should. be 15-inch minimum for maintenance reasons. A baffle should be incorporated into the outlet to remove floatables. Brad Lindaman indicated TKDA should include the proposed West Vadnais discharge in the Mn/DOT hydrologic model because the Owasso Basin is very volume- sensitive. Because of the large surface area of West Vadnais Lake, and long time lag for discharge, it was suggested the proposed outlet flow could be added to the model as base flow at 2 cfs maximum (pipe full condition). Possible tailwater effects in the ditch at old Knox/Levitz are not a concern since West Vadnais elevation control could be provided between rainfall runoff events. Brad requested the justification for including or excluding a gate in the proposed outlet be included in the eventual request to Ramsey- Washington Metro WD. It was noted that sand bags could be used to block flow from the proposed outlet structure, when necessary. 3. Mn/DOT requires a written request by October 1, 2003 to amend the scope of contract with TKDA to include preliminary engineering for the proposed West Vadnais outlet. The County and St. Paul Regional Water will submit a joint letter to Jeff Gibbens requesting engineering services for the West Vadnais outlet. Upon receipt of the written request, Mn/DOT will request a proposal of costs from TKDA. 4. Terry Noonan will discuss DNR permitting issues for the proposed project with Travis Germundson. 5. The alignment of the proposed outlet pipe must consider Mn/DOT's Utility Accommodation Policy. A straight pipe crossing under I-694 is acceptable. A pipe \projects\W. Vadnais