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CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE CITIES OF BROOMFIELD AND WESTMINSTER, ADAMS, BOULDER, AND JEFFERSON COUNTIES, COLORADO, UNDER THE NATIONAL FLOOD INSURANCE PROGRAM On September 30, 1988, and September 28, 1990, the Federal Emergency Management Agency identified Special Flood Hazard Areas (SFHAs) in the Cities of Broomfield and Westminster, Adams, Boulder, and Jefferson Counties, Colorado through issuance of a Flood Insurance Rate Map (FIRM). The Mitigation Directorate has determined that modification of the elevations of the flood having a I-percent chance of being equaled or exceeded in any given year (base flood) for certain locations in these communities is appropriate. The modified base flood elevations (BFEs) revise the FIRMs for the communities. The changes are being made pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448),42 U.S.C. 4001-4128, and 44 CFR Part 65. A hydraulic analysis was performed to incorporate more detailed topographic data and has resulted in a revised delineation of the regulatory floodway, an increase and decrease in SFHA width, and increased BFEs for Big Dry Creek. The table below indicates existing and modified BFEs for selected locations along the affected lengths of the flooding source(s) cited above. Location Existing BFE (feet) * Modified BFE (feet) * lApproximately 2,780 feet upstream of Zuni Street 2 Approximately 3,300 feet upstream of Zuni Street 2 Approximately 5,200 feet upstream of Zuni Street 5,195 5,197 5,200 5,197 5,198 5,201 lIn the City of Broomfield 2In the City of Westminster *National Geodetic Vertical Datum, rounded to nearest whole foot Under the above-mentioned Acts of 1968 and 1973, the Mitigation Directorate must develop criteria for floodplain management. To participate in the National Flood Insurance Program (NFIP), the community must use the modified BFEs to administer the floodplain management measures of the NFIP. These modified BFEs will also be used to calculate the appropriate flood insurance premium rates for new buildings and their contents and for the second layer of insurance on existing buildings and contents. Upon the second publication of notice of these changes in this newspaper, any person has 90 days in which he or she can request, through the Chief Executive Officer of the community, that the Mitigation Directorate reconsider the determination. Any request for reconsideration must be based on knowledge of changed conditions or new scientific or technical data. All interested parties are on notice that until the 90-day period elapses, the Mitigation Directorate's determination to modify the BFEs may itself be changed.