5E, Quotes for Survey Work - 2013 PMP

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C(D) EXAMPLES OF WETLAND AND FLOODPLAIN EXPERIENCE Wetland Management Plan,City of Ramsey,Minnesota The City of Ramsey's Wetland Management Plan included field review and evaluation of all of the City's wetlands using MnRAM functional assessment software to rank each wetland in low,moderate,high and exceptional categories based on the MnRAM functional index score.These categories were mapped and included in the Ramsey Comprehensive Wetland Management Plan. Bolton&Menk,Inc. assisted the City of Ramsey in developing wetland protection rules that were incorporated into ordinance recommendations.The Plan and its figures,maps and tables were made GID- ready for inclusion into the City's GIS system.The Plan was also distributed to all of the potential TEP members,including the area watershed districts, for review and comment prior to presenting the Plan to the City Council and ultimately to the public in a hearing. Floodplain DFIRM Remapping,City of Lake Crystal,Minnesota The City of Lake Crystal,MN recently received updated preliminary Digital Flood Insurance Rate Maps (DFIRM)along with flood mapping updates in Blue Earth County.During this study,FEMA chose to remap County Ditch(CD)56, which flows directly through a residential portion of town.Bolton&Menk, Inc. was hired to review the preliminary flood mapping because several properties were added to the FEMA regulated floodplain that were not included in previous maps.The hydraulic modeling performed by FEMA"s mapping partner was reviewed,where it was discovered that several key hydraulic conveyance features through town were neglected in the hydraulic models,thereby artifically increasing peak flood elevations and extending the floodplain boundary. The City of Lake Crystal hired Bolton&Menk,Inc.to remap all of its floodplain maps and produce hydraulic models and documents according to FEMA's Guidelines and Specifications for Flood Hazard Mapping Partners.Additional survey data, along with available LiDAR topographic data,was obtained where neceassry and the hydraulic models and DFIRM maps were redeveloped using the more accurate data.The new maps and study underwent rigorous QA/QC analysis including the use of the CHECK- RAS program to verify the acceptability of the revised maps. The resultant maps and Flood Insurance Study removed a significant amount of properties from the proposed floodplain and established reliable 100-year flood(1%event)elevations that can be used to properly manage the floodway.The data and supporting report documents were submitted to FEMA during Blue Earth County's comment period where the new modeling and maps were approved and accepted by FEMA.Also,the modeling and mapping was determined to be at a high enough level of detail that the maps were adopted as Zone AE with documented base flood elevations as opposed to the previously accepted Zone A maps.Upon completion of the project and FEMA approval,the City of Lake Crystal received reliable and accurate flood information. FEMA Digital Flood Insurance Rate Map(DFIRM)Study,Meeker County,Minnesota Meeker County received a grant from the Minnesota Department of Natural Resources to remap several of its streams using the HEC-RAS hydraulic modeling software.Bolton&Menk,Inc.was hired to work with Meeker County Survey Data and available contour mapping to generate a series of hydaulic models as well as utilize HEC-GeoRAS to delineate the FEMA Zone A floodplain. Bolton&Menk followed FEMA's Guidelines and Specifications for FLood Hazard Mapping Partners to produce highly accurate flood modeling data that met FEMA's rigorous requirements. N:\PROPOSALS\SSmvey\Bumsville\2012\Topo\Arden Hills 2013\Arden Hills 2013 PMP.doc