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. Eric reminded the group that the relocation plan at the moment is conceptual-the elevations will be looked at closer when the construction plans come together. It was confirmed that the elevations discussed are in the 1929 datum. . Gary asked Dave what structures fall below the 50 year pool elevation and would need to be relocated. Dave listed the swim beach facilities, picnic areas, flush bathrooms, and group picnic areas. . Betty suggested that they can consult with a COE flood plain expert named Randal Baines for further direction. 3) Environmental Mitigation . Tom Ryon (Otter Tail Environmental) said that a draft of the Preble's portion of the Conceptual Mitigation Plan that includes the Systems Approach for Plum Creek has been given to Tetra Tech for review. It is the most complex part of the plan. He recently had a meeting with ERO Resources looking at habitat overlap with birds, wetlands, and Preble's. Bird and Preble's habitat overlap almost completely, however, there is more bird habitat beyond where the Preble's habitat is so there will be more mitigation. He is currently looking at the frequency and duration of inundation during the growing season with the different alternatives. This includes looking at how many trees will be lost and what vegetation will have to be replaced. Tom R. suggested that it helps to took at options for water-level control to help with mitigation costs. . Eric will speak with Joel about looking at other mitigation elevations in the models. . Tom R. said that the mitigation pieces to look at next are habitat overlap, wetlands and then birds. He does not anticipate that these mitigations will be as complicated as the Preble's. . A COE approach to look at ecosystem function was provided to ERO Resources by Betty. Steve Dougherty and Mary Powell (ERO Resources) will look it over and see if is applicable to Chatfield and the Systems Approach. . Betty explained that with the COE approach to wetlands is that they would mitigate for the function of them-there would be no net loss of wetlands because some shallow wetlands would become deeper wetlands. There would then be a need to mitigate for the loss of the shallow wetlands which could correspond with Preble's mitigation. . Steve said that reservoir operations (water-level elevations) should be looked at through the NEPA process. There could be an iterative process to figure out which resources will be benefited at which water level. This will involve a tradeoff between recreation, environmental issues, and the Cooperators' water demands. He feels like we will get feedback from the public on what they can do on the operations side of things so it will be better to address it now. 3 Tetra Tech