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Federal Emergency Management Agency Washington, D.C. 20472 DEe 17 2001 CER nFIED MAIL RETURN RECEIPT REQUESTED IN REPLY REFER TO: Case No.: 01-08-416P Mr. Marty Flaum Chairman, Adams County Board of Commissioners 450 South Fourth Avenue Brighton, CO 80601 Community: Adams County, CO Community No.: 080001 Panel Affected: 08001COOI0 G Ef~ective.~ate of APR 0 ,9 2002 This ReVISIon: 102-I-A-C Dear Mr. Flaum: This responds to a request that the Federal Emergency Management Agency (FEMA) revise the effective Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for your community in accordance with Part 65 of the National Flood Insurance Program (NFIP) regulations. In a letter dated September 27,2001, r. ' Rocky Mountain Consultants, requested that FEMA revise the FIRM and FIS report to show the effects of the Aspen Creek development project along Quail Creek and Tributary D. This request included revised hydrologic and hydraulic analyses to reflect existing channel conditions along Quail Creek from approximately 1,600 feet downstream of Sheridan Parkway to Country Estates Pond, which is located just upstream of South 124th Street, and along Tributary D from the confluence with Quail Creek to approximately 50 feet downstream of South 124th Street. This request follows up on a Conditional Letter of Map Revision issued on June 14,2001. All data required to complete our review ofthis request were submitted with letters from We have completed our review of the submitted data and the flood data shown on the effective FIRM and in the effective FIS report. We have revised the FIRM and FIS report to modify the elevations, floodplain boundary delineations, and zone designations of the flood having a I-percent chance of being equaled or exceeded in any given year (base flood) along Quail Creek. As a result of the modifications, Base Flood Elevations (BFEs) were established for Quail Creek from approximately 1,600 feet downstream to approximately 100 feet downstream of Sheridan Parkway; the width of the Special Flood Hazard Area (SFHA), the area that would be inundated by the base flood, increased in some areas and decreased in other areas. The modifications are shown on the enclosed annotated copies of FIRM Panel 08001COOI0 G; Profile Panel 163P; and affected portions of the Summary of Discharges Table. This Letter of Map Revision (LOMR) hereby revises the above-referenced panels of the effective FIRM and the affected portions of the FIS report both dated August 16, 1995. Because this revision request also affects the City of Broomfield, a separate LOMR for that community was issued on the same date as this LOMR. The modifications are effective as of the date shown above. The map panels as listed above and as modified by this letter will be used for all flood insurance policies and renewals issued for your community.