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-{eye 5.2. <br />WSB <br />& Associcrte.r, Inc. <br />Infrastructure ^ Engineering ^ Planning ~ Construction <br />Technical Memorandum <br />To: Honorable Mayor and City Council, City of Elk River <br />Copy: Justin Femrite, P.E., City Engineer <br />Jeremy Barnhart, Planning Manager <br />Rebecca Haug, Environmental Administrator <br />From: Andi Moffatt, WSB & Associates <br />Date: August 4, 2011 <br />Re: 171St Avenue Area Draft AUAR <br />City of Elk River, Minnesota <br />WSB Project No. 1992-00 <br />701 Xenia Avenue South <br />Suite #300 <br />Minneapolis, MN 55416 <br />Tel: 763 541-4800 <br />Fax: 763 541-1700 <br />Attached, please find a draft of the 171St Avenue Area Alternative Urban Areawide Review (AUAR) <br />for your review at the August 8, 2011 City Council work session. This is a large document for <br />review, so please note that there is an Executive Summary at the front of the document that <br />provides an abbreviated summary of the environmental analysis and lists all of the proposed <br />mitigation measures. <br />As discussed at previous City Council meetings, development within the 171St Avenue Area <br />requires environmental review and the AUAR process was chosen since it allows review of <br />different development scenarios. The purpose of the AUAR is to identify environmental <br />impacts associated with development within the study area. These impacts have been <br />evaluated for three different development scenarios. <br />Preparation of the AUAR for the 253 acre study area included analyzing the following major <br />environmental issues on the surrounding area: <br />• Traffic, air, and noise <br />• Storm water management <br />• Habitat and wetlands <br />• Wastewater <br />~ Water use <br />• Erosion and sedimentation <br />k:101992-OOOladminldocslgeneral documentslmemo - 080411 -council worksession.doc <br />