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<br />. <br />,.' <br /> <br />) <br /> <br />CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE CITY <br />AND COUNTY OF BROOMFIELD, COLORADO, UNDER THE NATIONAL FLOOD INSURANCE <br />PROGRAM <br /> <br />On September 30, 1997, the Department of Homeland Security's Federal Emergency Management <br />Agency identified Special Flood Hazard Areas (SFHAs) in the City and County of Broomfield, Colorado, <br />through issuance of a Flood Insurance Rate Map (FIRM). The Mitigation Division has determined 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 />(TitleXIII 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 incOl]lorate the effects of construction of the Northwest Parkway <br />and two Northwest Parkway access ramps and has resulted in increases and decreases in SFHA width and <br />increased and decreased BFEs for Rock Creek. The table below indicates existing and modified BFEs for <br />selected locations along the affected lengths of the flooding source(s) cited above. <br /> <br />Location <br /> <br />Existing BFE <br />(feet)" <br /> <br />Modified BFE <br />(feet)" <br /> <br />Approximately 400 feet downstream of Northwest Parkway <br />Approximately 350 feet upstream of Northwest Parkway <br /> <br />5,213 <br />5,220 <br /> <br />5,211 <br />5,216 <br /> <br />"North American Vertical Datum (NA VD), rounded to nearest whole foot. Please note that the NA VD is <br />3.1 feet higher than the previous datum for this community, the National Geodetic Vertical Datum. <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 Karen Stuart <br />Mayor, City and County of Broomfield <br />One DesCombes Drive <br />Broomfield, CO 80020 <br />