2020-243 - Laserfiche WebLink

Home Browse Search

conditions will be set based on the OEM. The CONSULTANT will not review the DEM for topographic voids and will not include any as -built conditions or cut -over dates since the publication of the DEM. The Consultant will also collect the following published data: • SLR information from both the Army Corps of Engineers and National Oceanic Atmospheric Administration (NOAA). SLR information will be based on the 2017 NOAA rates; • Available tidal elevations from nearby NOAA gauges; • Design rainfall even based on the South Florida Water Management District's Basis of Review for the 100-year/1-day event; • Latest Federal Emergency Management Agency (FEMA) flood maps; • Predicted storm surge for a Category 1 and 3 Hurricanes (based on available data from the Indian River County Emergency Management Division) The Consultant will facilitate a meeting with County5taff to establish the planning horizon for the project (i.e. 30 years or 2050 based on asset class). D. Deliverable(s): 1) Technical memorandum summarizing the data collection results and the planning level horizon. Task #3 A. Title: Preliminary Exposure Analysis B. Goal: Create a paired asset threat matrix based on ranking of SLR and coastal flooding impacts to County assets, infrastructure, and communities. C. Description: Based on the assets identified in Task 1 (Working Group and Public Meeting) unincorporated areas of the County located east of 1-95 will be screened for exposure to SLR and coastal flooding using online tools such as NOAA's Coastal Flood Exposure Mapper, NOAA's Sea Level Rise Viewer, University of Florida Sea Level Rise Sketch Tool Viewer, and other resources. The following are examples of screening parameters for Task 3: • SLR for the low/medium/high projections -given exposure (i.e. if SLR does not impact all assets on a given curve—the next highest curve will be used) • Top 3 King Tide elevations (highest recorded elevation through 2019 as available on nearby NOAA gauge) • Predicted storm surge for a Category 1 Hurricane (based on data from Indian River County Emergency Management Division) • Predicted storm surge for Category 3 Hurricane (based on date from Indian River County Emergency Management Division) • Combined sea -level rise (low projection) with FEMA flood information — (static evaluation — no coastal modeling of wave action will be performed) • Combined sea -level rise (high projection) with FEMA flood information (static evaluation — no coastal modeling of wave action will be performed) • Category 1 event with combined SLR — high projection (static evaluation — no coastal modeling of wave action will be performed) A preliminary ranking of areas, as reasonably defined by topography or exposure limits, will be established based on flooding depths and potential disruption of services. (The areas will be ranked (qualitatively) to assign criticality for the paired asset threat matrix for the purposes of completing a vulnerability assessment in Task 4). D. Deliverable(s): 1) Technical memorandum of the paired asset threat matrix, showing the preliminary exposure analysis. Task #4 A. Title: Vulnerability Assessment