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Federal Emergency Management Agency Washington, D.C. 20472 JAN 2 1 200lt CERTIFIED MAIL RETURN RECEIPT REQUESTED IN REPLY REFER TO: Case No.: 03-08-0520P The Honorable Ed Moss Mayor, City of Westminster 4800 West 92nd Avenue Westminster, CO 80031 Community: City of Westminster, CO Community No.: 080008 Panels Affected: 08059C0089 E and 0093 E Effective Date of MAY 0 6 2MJ. This Revision: UU'"t 102-I-A-C Dear Mayor Moss: This responds to a request that the Department of Homeland Security's Federal Emergency Management Agency (FEMA) revise the effective Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for Jefferson County, Colorado and Incorporated Areas (the effective FIRM and FIS report for your community), in accordance with Part 65 of the National Flood Insurance Program (NFIP) regulations. In a letter dated May 27,2003, Mr. David W. Loseman, P.E., L.S., Senior Projects Engineer, Floodplain Manager, Department of Community Development, City of Westminster, requested that FEMA revise the FIRM and PIS report to show the effects of channel modifications, including a low-water pedestrian trail crossing and channel grading, along Airport Creek from Eaton Street upstream to 112th Avenue. All data required to complete our review of this request were submitted with letters from 1 t P.E., McLaughlin Water Engineers, Ltd., and Mr. Loseman. 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 and floodway boundary delineations of the flood having a I-percent chance of being equaled or exceeded in any given year (base flood) through the revised reach of Airport Creek. As a result of the modifications, the Base Flood Elevations (BFEs) and the widths of the Special Flood Hazard Area (SFHA), the area that would be inundated by the base flood, and the regulatory floodway for Airport Creek increased in some areas and decreased in other areas. The modifications are shown on the enclosed annotated copies of FIRM Panels 08059C0089 E and 08059C0093 E, Profile Panels 01P and 02P, and affected portions of the Floodway Data Table. This Letter of Map Revision (LOMR) hereby revises the above-referenced panels of the effective FIRM and the affected portions of the PIS report, both dated June 17, 2003. The modifications are effective as ofthe 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. The following table is a partial listing of existing and modified BFEs: Location Existing BFE (feet) * Modified BFE (feet) * Approximately 780 feet downstream of West 1 12th Avenue Approximately 170 feet downstream of West I 12th Avenue 5,281 5,285 5,280 5,284 *Referenced to the National Geodetic Vertical Datum, rounded to the nearest whole foot