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Kimley»>Horn <br />Figure 1 — SUE Limits <br />Deliverables <br />• SUE Plans <br />• Test Hole Data Reports <br />Page 10 <br />Task 2.B Floodplain Impact Study <br />Kimley-Horn will complete a floodplain impact study for the proposed storm improvements that will outfall <br />into Coal Creek Drainageway A, which is a regulated FEMA floodplain (Zone AE). Kimley-Horn does not <br />anticipate any fill being placed within the floodplain and that hydraulic modeling will not need to be <br />completed for the proposed project to analyze the potential impacts to flooding. This task will consist of <br />producing cross sections to show that the project is not producing fill in the floodplain. In addition, a <br />"Statement of No Impact" will be provided stating that there is no fill with the regulatory floodplain, the project <br />will not increase BFEs of the Coal Creek Drainageway A floodplain, and the project will not adversely impact <br />adjacent properties. If it is determined that fill will be placed within the floodplain, a detailed hydraulic <br />analysis will be required to analyze the impacts and show that there is no -rise created by the project. This <br />is not included as part of this task but can be completed as an additional service. <br />Task 2.0 Drainage <br />Kimley-Horn will take the 30% drainage design that has been completed and advance to 60%, 90%, Final, <br />and Bid Set level design. Kimley-Horn will complete a detailed proposed conditions analysis for the drainage <br />patterns to assist with preparing a final drainage analysis. This analysis will provide a detailed analysis for <br />sizing of the selected drainage improvements from the 30% design efforts. This task will take the selected <br />alternative to final design, which consists of detailed grading of the drainage improvements, completing <br />drainage basin calculations for the 10-year and 100-years storm events utilizing the rational method, storm <br />sewer design calculations utilizing StormCAD, and inlet calculations. <br />See Task 4.A.1, Design Review, for submittal and review details. <br />kimley-horn.com <br />11800 Ridge Parkway, Suite 200, Broomfield, CO 80021 <br />303 228 2300 <br />