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Federal Emergency Management Agency Washington, D.C. 20472 OCT 23 2001 CERTIFIED MAIL RETURN RECEIPT REQUESTED IN REPLY REFER TO: Case No.: OI-08-339P The Honorable William Berens Mayor, City of Broomfield One Descombes Drive' Broomfield, CO 80020 Community: City of Broomfield, CO Community No.: 085073 Panel Affected: 0015 D Ef~ective:~ate of FEB 05 2002 ThIs RevIsIon: I02-I-A-C Dear Mayor Berens: 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 August 1,2001, P.E., Project Manager, Drexel Barrell & Co., requested that FEMA revise the FIRM and FIS report to show the effects of the existing 96th Street crossing of Rock Creek approximately 650 feet upstream of the Burlington Northern Railroad (BNRR), placement offill along the northern overbank of Rock Creek from the BNRR to 96th Street, and installation of four 86-inch-diameter steel culverts under the BNRR crossing. All data required to complete our review of this request were submitted with letters from f 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 and floodplain boundary delineations of the flood having a I-percent chance of being equaled or exceeded in any given year (base flood) along Rock Creek from Brainard Drive to just upstream of the Denver-Boulder Turnpike. As a result of the modifications, the Base Flood Elevations (BFEs) for Rock Creek and the width ofthe 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 0015 D, Profile Panel 07P, and affected portions of the Summary of Discharges Table. This Letter of Map Revision (LOMR) hereby revises the above-referenced panel of the effective FIRM and the affected portions of the FIS report, both dated September 30, 1997. The modifications are effective as of the date shown above. The map panel listed above and as modified by this letter will be used for all flood insurance policies and renewals issued for your community. The following table is a partial listing of existing and modified BFEs: Location Existing BFE (feet)* Modified BFE (feet)* Approximately 100 feet upstream of Brainard Drive Just upstream of the Denver-Boulder Turnpike 5,307 5,357 5,308 5,352 *Referenced to the National Geodetic Vertical Datum, rounded to the nearest whole foot