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<br />Shenandoah Improvements Feasibility Report <br />City of Lino Lakes, MN <br />WSB Project No. 018901-000 Page 13 <br />7.3 Permit Table <br />Permit Agency Timeline to Approval <br />Federal <br />Section 404 NWP 27 US Army Corps 60-90 days <br />Local <br />Rice Creek Watershed <br />District Permit <br />Rice Creek Watershed <br />District <br />40 days <br />Wetland Conservation <br />Act No Loss <br />Rice Creek Watershed <br />District <br />60 days <br /> <br />8.0 Concept 3 <br />Concept 3 involves the most holistic improvements for the project, providing benefits <br />to water quality, floodplain management, site ecology, recreation, and education. <br />There are four proposed basins of varying size and depth, providing a variety of <br />wetland environments and water levels. As with the other concepts, water is <br />proposed to enter the basins via one -way inlets. The larger bas ins are proposed to <br />be of greater depth, allowing for increased water quality volumes to be treated and <br />further reductions in flood elevations. <br />Another major component of this concept is the realignment of the ditch channel <br />through the park . The proposed c hannel would be approximately the same length, <br />but follow a more natural and winding route instead of the sharp 90 degree turns, <br />reducing drastic velocity changes and the associated potential erosion. <br />Concept 3 would also allow for the playground area in the park to be more easily <br />accessible to Arrowhead Trail and also potentially afford some parking spaces in the <br />space freed up by the ditch realignment. The concept also has potential space for <br />boardwalks or trails through much of the park, provid ing recreational and <br />educational opportunities through the large and varying spaces of restored wetlands, <br />and providing a pedestrian connection from Arrowhead Tr. t o Birch St.