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LRRWMO Meeting Minutes • January 16, 1997 Page 4 DNR Amendment Reauest for Review and Comments The LRRWMO reviewed the Request for Review and Comment on DNR Permit #90-6229 for Mn/DOT's project to reconstruct the Highway 169 bridge between Anoka and Champlin. Schultz advised he attended the preconstruction meeting on this project and noted the application has been sent to the DNR for an amendment to their request for review and comment application. He noted the causeway which is part of the project and advised of the construction schedule. Schultz pointed out the mention of the 831 elevation and advised that this may result in flood conditions. However Tom Hovey, DNR, also attended the preconstruction meeting and indicated he was concerned with this plan and felt Mn/DOT had not considered all alternatives for this project or reseazched upstream impact. Schultz advised the City of Anoka has relayed similar concerns with regazd to elevation and potential for flooding, and asked about upstream impact and ice jamming. Ferguson asked if Anoka has upstream residents that maybe in danger of flooding. Schultz stated this is correct. Weaver inquired regazding the jurisdiction of the LRRWMO in this project. Schultz advised that the • actual contracts have not yet been signed. Jankowski noted the LRRWMO has the opportunity to comment and concerns should encompass potential for flooding, elevation, navigation, etc. Weaver reviewed concerns expressed during the Coon Rapids dam project and their determination to lower the pool for two years. He noted this project will continue and the only other alternative is to use barges, which will not work in this case. Weaver stated he believes this method of construction maybe the best of the alternatives considered. Jankowski noted that the State may need to purchase flood insurance for several years for the upstream properties. Schultz asked if there maybe other alternatives which have not yet been explored, such as using a concrete saw and crane for removal of the old bridge. He stated he agrees with comments expressed by Tom Hovey that more research needs to be done on possible other alternate methods. Weaver stated the role of the LRRWMO is to raise concerns, such as the potential for construction increasing elevations above the flood level during the on-set of spring run-off and express them to the authorities who do have jurisdiction with this permit. He explained the river level conditions which result in ice jamming and constriction of water flow and pointed out the time of construction is taking place during the period of highest water levels and will constrict the total flow of the river to one-half which will increase the potential for flooding. •