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<br />.... <br /> <br />.. <br />]>. <br /> <br />'l:),1==' I ~ <br /> <br />, <br /> <br /> <br />Federal Emergency Management Agency <br />Washington, D.C. 20472 <br /> <br />CERTIFIED MAIL <br />RETURN RECEIPT REQUESTED <br /> <br />IN REPLY REFER TO: <br />Case NO.:li,RP,~9~.i:()1l1lP <br /> <br />The Honorable MaryLou Makepeace <br />Mayor, City of Colorado Springs <br />P.O, Box 1575 <br />Colorado Springs, CO 80901-1575 <br /> <br />Community: City of Colorado Springs, CO <br />Community No.: 080060 <br />Panels Affected: 08041C0507 F, 0509 F and <br />0528 F <br />Effective Date of J U L 2 8 'WW\ <br />This Revision: 'VlIU <br /> <br />102-I-A-C <br /> <br />Dear Mayor Makepeace: <br /> <br />This responds to a request that the Federal Emergency Management Agency (FEMA) revise the effective <br />Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for EI Paso County, Colorado <br />and Incorporated Areas (the effective FIRM and FIS report for your community), in accordance with Part 65 <br />of the National Flood Insurance Program (NFIP) regulations. In a letter dated January 6, 1999, Mr. Dan <br />Bunting, P.E., Regional Floodplain Administrator, City of Colorado Springs, requested that FEMA revise <br />the FIRM and FIS report to show the effects of construction of Pine Creek and North Pine Creek drainage <br />facilities associated with Pine Creek Residential Subdivision Filings II, 12, and 13 and revision to the <br />floodways along Pine Creek and North Pine Creek. The project extends along Pine Creek from <br />approximately 850 feet downstream of the outfall of the storm drain system (outfall) to approximately 7,800 <br />feet upstream of Briar gate Parkway and along North Pine Creek from approximately 200 feet upstream to <br />approximately 3,500 feet upstream of the outfall. This request also included a revised hydrologic analysis <br />for both Pine Creek and North Pine Creek, <br /> <br />The Pine Creek project included construction of a retention facility with a storage volume of approximately <br />68 acre-feet approximately 1,000 feet east of the Pine Creek Filing 12 subdivision; a detention pond with <br />a storage volume of approximately 23 acre-feet approximately 900 feet upstream of Briargate Parkway; a <br />sloped inlet drop structure; and a 1,760-foot-Iong, 60-inch-diameter reinforced-concrete pipe (RCP) storm <br />drain, This storm drain will contain the flood having a I-percent chance of being equaled or exceeded in any <br />given year (base flood) and will outfall into Pine Creek approximately 150 feet downstream of an unnamed <br />road, <br /> <br />The North Pine Creek project included construction of a detention pond with a storage volume of <br />25 acre-feet approximately 1,800 feet upstream of the outfall; a sloped inlet drop structure; and a <br />1,880-foot-long, gradually expanding (54-,66-, and 84-inch-diameter) RCP storm drain, This storm drain <br />will contain the base flood and will join the above-mentioned storm drain approximately 200 feet upstream <br />ofthe outfall. <br /> <br />Our review revealed that the flood hazard information in the effective Floodway Data Table for Pine Creek <br />was not consistent with the information shown on the effective FIRM and profile panels for Pine Creek. We <br />have corrected and revised the entire Floodway Data Table for Pine Creek as part of this Letter of Map <br />Revision (LOMR). This request follows up on a Conditional Letter of Map Revision issued on December 3, <br />1998. <br />