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<br />D. Floodplain Engineering Qualifications <br /> <br />ICON has long been recognized for our expertise in drainage and flood controL We provide <br />complete services from conceptualizing improvements through construction, including <br />environmental permitting and FEMA map revisions, Our ability to offer in-house surveying <br />greatly facilitates the completion of projects, Over the past years, our staff has completed <br />over 200 projects for the UD&FCD and have conducted drainage and flood control, <br />floodplain, planning or designs for nearly all of the Front Range Communities, Our Western <br />slope clientele has included Vail, Grand Junction, Eagle, Frisco, and Steamboat Springs, <br /> <br />Floodplain mapping submittals that must be reviewed and acc(~pted by FEMA must have a <br />letter of acceptance from the State, Therefore, project requirements typically involve review <br />and acceptance by the CWCB as a part of the proeess, For FEMA acceptance, all submittals <br />must follow FEMA's strict guidelines and utilize their forms for presenting hydrologic and <br />hydraulic analysis, From a technical standpoint, our approach to completing floodplain <br />analysis and reviews is geared toward meeting th<, criteria of both the CXCB and FEMA, as <br />well as following the requirements of the local projeet sponsor.'- <br /> <br />Generally, floodplain analysis starts with good existing topography that represents the area in <br />question, ICON Engineering, Inc" has in-house survey and mapping capabilities which <br />allows us to produce new topography of both large and small sites, or to supplement existing <br />mapping by updating with field surveys, Our crews are experienced in obtaining surveys that <br />lend themselves to detailing for hydraulic analysis, ICON is serving as UD&FCD's open- <br />ended consultant for completing surveying, mapping, and map checks for hydraulic floodplain <br />analysis, We have completed over 50 projects in which mapping has been developed for <br />identification of flooding for both FEMA submittals and design of improvements, We have <br />also completed several mapping projects for the CWCB that involved both field and aerial <br />surveys, We have completed over 14 miles of mapping along the Roaring Fork River and the <br />Eagle River in Western Colorado, This work included providing the mapping in digital <br />format and also providing over 100 digitized cross-sections for use in completing a hydraulic <br />floodplain analysis for FEMA. Our enginecrs worked with our survey department to layout <br />and digitize the most effective sections to be used fClr this analysis, <br /> <br />Once accurate mapping is obtained, analysis can be completed using several different <br />computer models, ICON's staff is experienced with all of the most recent programs currently <br />used and accepted by the CWCB and FEMA. Most analysis is completed using the U,S, <br />Army Corps of Engineers' HEC-2 computer backwater program, Other acceptable methods <br />include HEC-RAS, which is a Windows-based version of HEC'2, We also have completed <br />studies using BOSS HEC-2 which is a CADD-based program allowing the user to code in <br />cross-sections automatically from digital mapping, This program also allows the user to plot <br />floodplains and profiles based on the results ofthe HEC-2 output. ICON recently completed a <br />Flood Hazard Area Delineation Study (FHAD) for Willow Creek and Tributaries for the <br />UD&FCD and Douglas County, This study included 27 plan and profile drawings depicting <br />the 100-year floodplain and flood profiles for over 12,5 miles of drainageway, This study was <br />completed using the BOSS HEC-2 progranl, and the entire study (plan and profile drawings) <br />was developed in AutoCAD, ICON has experience in utilizing other hydraulic programs <br /> <br />4 <br />