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<br />'I' <br /> <br />CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE CITY <br />OF BOULDER, BOULDER COUNTY, COLORADO, UNDER THE NATIONAL FLOOD <br />INSURANCE PROGRAM <br /> <br />On October 4, 2002, the Department of Homeland Security's Federal Emergency Management Agency <br />identified Special Flood Hazard Areas (SFHAs) in the City of Boulder, Boulder County, Colorado, <br />through issuance of a Flood Insurance Rate Map (FIRM). The Mitigation Division has detennined that <br />modification of the elevations of the flood having a I -percent chance of being equaled or exceeded in any <br />given year (base flood) for certain locations in this community is appropriate. The modified Base Flood <br />Elevations (BFEs) revise the FIRM for the community. <br /> <br />The changes are being made pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public <br />Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended <br />(Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448), 42 U.S.C. <br />4001-4128, and 44 CFR Part 65. <br /> <br />A hydraulic analysis was performed to incorporate the effects of the Williams Village development along <br />Bear Canyon Creek from approximately 200 feet upstream of Baseline Road to just upstream of U.S. <br />Highway 36 and has resulted in a revised delineation of the regulatory floodway, increases and decreases <br />in SFHA width, and increased and decreased BFEs for Bear Canyon Creek. The table below indicates <br />existing and modifitq~BFEs for selected locations along the affected lengths of the flooding source(s) <br />cited above. .- . <br /> <br />Location <br /> <br />Existing BFE <br />(feet)' <br /> <br />Modified BFE <br />(feet)' <br /> <br />Approximately 440 feet downstream of U.S. Highway 36 <br />Approximately 160 feet downstream of U.S. Highway 36 <br /> <br />5,338 <br />5,343 <br /> <br />5,337 <br />5.344 <br /> <br />'National Geodetic Vertical Datum, rounded to nearest whole foot <br /> <br />Under the above-mentioned Acts of 1968 and 1973, the Mitigation Division must develop criteria for <br />floodplain management. To participate in the National Flood Insurance Program (NFIP), the community <br />must use the modified BFEs to administer the floodplain management measures of the NFIP. These <br />modified BFEs will also be used to calculate the appropriate flood insurance premium rates for new <br />buildings and their contents and for the second layer of insurance on existing buildings and contents. <br /> <br />Upon the second publication of notice of these changes in this newspaper, any person has 90 days in <br />which he or she can request, through the Chief Executive Officer of the community, that the Mitigation <br />Division reconsider the determination. Any request for reconsideration must be based on knowledge of <br />changed conditions or new scientific or technical data. All interested parties are on notice that until the <br />90-day period elapses, the Mitigation Division's determination to modify the BFEs may itself be changed. <br /> <br />Any person having knowledge or wishing to comment on these changes should immediately notify: <br /> <br />The Honorable William R. Toor <br />Mayor, City of Boulder <br />1777 Broadway <br />Boulder, CO 80306 <br />