5N, Approve a Contract with Kimley Horn, Inc., for Old Highway 10 Bridge Design

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�� Kimisy-Horn Mr. Terry Maurer, Decem6e�• 7, 2011, Page 3 — and Associates, Inc. impact areas, demarking the wetland. A report documenting the boundary, as required by the agencies, will be prepared. Review and approval ofthe delineation will be required by the RCWD, as the local governmental unit, which will also include a review by representatives from Board of Water and Soil Resources (BWSR), the CoE, the City of Arden Hills, and MnDNR. This task assumes one Technica( Evaluation Panel (TEP) meeting on-site, coordinated and led by Kimley-Horn to review the wetland boundaries and provide a general project overview. We will prepare preliminary bridge plans of the new box culvert at the Lake Josephine Discharge Channel crossing at Old Snel(ing Avenue. The preliminary bridge plans will show key geornetrics of the structure including the layout of the culvert in plan, with a general elevation and section of the structure. The preliminary plan will also show the size and invert elevations of the box culvert. We assu�ne the City will provide the desired geometrics of the roadway and trail over the culvert. W.e will coordinate the proposed iinprovements with the RCWD. We have assumed the proposed improvements will requiee a variance from the RCWD floodplain regulations. We will conduct up to two (2) meetings with RCWD staff to coordinate the proposed improvements during the preliminary engineering phase. We will prepare a Conditional Letter of Map Revision (CLOMR) following the appropriate FEMA procedures to document the alterations to the floodplain and floodway boundaries within the project area. Based upon the survey data, we will generate the existing and proposed conditions modet for the channel and include the �nodeling outputs in the CLOMR document. We will prepare floodplain workmaps using the existing digital floodplain boundaries available through the DNR GIS system to document the alterations the proposed improvements will have on the floodplain. All workmaps will be included as appendices to the CLOMR document. We wip prepare the necessary FEMA forms to be reviewed and authorized by the City Engineer. The forms will be included in the CLOMR document. We will prepare the CLOMR document (Technical Data Noteboak) documenting the proposed improvements. The report will inciude the understanding of existing hydrology and hydraulics of study area, description of the proposed improvements, assumptions made in the modeling of those improvements, and summary of the impact the proposed improvements have on the floodplain and floodway. MnDOT Risk Assessment for Encroachment Design and Hydraulic Analysis worksheets will be prepared for the propased stream crossing.