08-24-1992 Council Packet - Laserfiche WebLink

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Segroent L. hegmeni L picks-up the tratTic from either sequent B or spcrmf^nr U' j a northwestorl, d.rocuon, past Maple Plain, ^p "^.ard Delano “ To analyze the potential impacts that these routes may have on wetlands within the MOWD I obtained aerial photographs from the City of Wayzata for each of the altern , ‘ superimposed the final alternatives onto U.S.G.S quadrangle topoCTaohic mm segments within the District. I overlaid the U.S.G S quads with MDNR w.h'^ a «7oll„ws:“>" The^e 'are s^mTan'^^d MDNR protected wetlands 835W, 857W and 918W. MDNR protected wetlands 830W. S31W, 81IW, 916W and 396W. In addition the thisToufe' P'Ptected waters. 15dP, ICOP and 162P, would also be affected by Segment B: Segment F: Segment J: P»«ntially affect MDNR protected wetlands 396W. 916W and Segment K: This se^nnent could potentially alTect MONK protected wetlands 9Hi\V mid 91SW. Segment L: So MDNR protected wetlands would be alTected by this segment. DISCUSSION S^e'’T^'.^TSoVsmdy"''''■"''’"''' disadvantages of the segments comprising Segment B: Segment F: Segment G: Segment J: The pnmary advantages m segment B is that it appears that it coulu be designed in such a way to minimize the impact on wetlands. In addition, the District should also coordinate placement of a water quality structure at the crossing of Lake Classen outlet creek The pnmary disadvantage of segment B is that it would aligner'”* wetlands. Particularly South Katrina Marsh as it is currently ^e pnmary advantage of segment F is that it would follow tha existing corridor resulting m a smaller area of land disturbance activity. However, a major noodpUin^"^ ^ s^^gment is that it would directly place fill in the Long Uke The advantages associated with segment G could include a slight shift in the proposed route further north to avoid MDNR protected waters. In addition, the Jt'stnct could coordinate with the MnDOT to construct a water quality structure at crossing 0 oisfeld Lake outlet creek. The primary disadvantage of this segment is that is has to connect to either segment J or K (discussed below) which ootn nave major wetland impacts. As with se^ent F. the primary advantage is that it follows the existing corridor and would have a smaller area of land disturbance. However, the Lake Katrina wetlands could be greatly impacted by this route. Fill would undoubtedly be placed within the Lake Katrina floodplain and Type III wetlands