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CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE UNINCORPORATED AREAS OF DOUGLAS COUNTY, COLORADO, UNDER THE NATIONAL FLOODINSURANCEPROG~ On January 5, 1996, the Federal Emergency Management Agency identified Special Flood Hazard Areas (SFHAs) in the unincorporated areas of Douglas County, 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 1-percentchance of being equaled or exceeded in any given year (base flood) for certain locations in this community is appropriate. The modified base flood elevations (BFEs) revise the FIRM for the community. The changes are being made pursuant to Section206 of the Flood Disaster Protection Act of 1973 (Publ(c 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 CFRPart 65. A hydraulic analysis was performed to incorporate a bank stabilization project at four locations and construction of two detention ponds along the reach of Tallman Gulch within the Upper Hidden River subdivision and updated topographic information, relocation of a road crossing, and construction of three grade control structures and a pedestrian bridge along Tallman Gulch downstream of the subdivision. This has resulted in a revised delineation of the regulatory floodway, an increase and decrease in SFHA width, and decreased BFEs for Tallman Gulch from approximately 6,300 feet upstream to approximately 8,400 feet upstream of Tallman Drive. 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) Approximately 6,300 feet upstream of Tallman Drive Approximately 7,900 feet upstream of Tallman Drive 6,050 6,080 6,045 6,075 *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.