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Home My WebLink About20132277.tiffFederal Emergency Management Agency Washington, D.C. 20472 August 1, 2013 CERTIFIED MAIL RETURN RECEIPT REQUES 1ED The Honorable William Garcia Chairman, Weld County Board of Commissioners P. O. Box 758 Greely, CO 80632 IN REPLY REFER TO: Case No.: Community Name: Community No.: 080266 Effective Date of This Revision: RECEIVED AUG 0 6 2013 WELD COUNTY 12-08-0826P COMMISSIONERS Weld County, CO December 16, 2013 Dear Mr. Garcia: The Flood Insurance Study Report and Flood Insurance Rate Map for your community have been revised by this Letter of Map Revision (LOMB.). Please use the enclosed annotated map panel revised by this LOMB. for floodplain management purposes and for all flood insurance policies and renewals issued in your community. Additional documents are enclosed which provide information regarding this LOMB. Please see the List of Enclosures below to determine which documents are included. Other attachments specific to this request may be included as referenced in the Determination Document. If you have any questions regarding floodplain management regulations for your community or the National Flood Insurance Program (NFIP) in general, please contact the Consultation Coordination Officer for your community. If you have any technical questions regarding this LOMR, please contact the Director, Mitigation Division of the Department of Homeland Security's Federal Emergency Management Agency (FEMA) in Denver, Colorado, at (303) 235-4830, or the FEMA Map Assistance Center toll free at 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on our website at http://www.fema.govinfip. Sincerely, AtiL Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration List of Enclosures: Letter of Map Revision Determination Document Annotated Flood Insurance Rate Map Annotated Flood Insurance Study Report cc: Mr. Clay Kimmi, P.E., CFM Drainage & Floodplain Engineer Weld County Mr. Stephen H. Blake, P.E. Project Manager ArtifexED, Inc. Mr. Robert Fleck St. Vrain Sanitation District eivvw uiru cat;m Cl igil3 For: Luis Rodriguez, P.E., Chief Engineering Management Branch Federal Insurance and Mitigation Administration 2013-2277 Page 1 of 5 Issue Date: August 1, 2013 Effective Date:. December 16, 2013 Case No.: 12-08-0826P LOMR-APP Federal Emergency Management Agency °4 - �, Washington, D.C. 20472 a��nnSxz�1 LETTER OF MAP REVISION DETERMINATION DOCUMENT COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST COMMUNITY Weld County Colorado (Unincorporated Areas) FILL OTHER FLOODWAY HYDRAULIC ANALYSIS NEW TOPOGRAPHIC DATA COMMUNITY NO.: 080266 IDENTIFIER St. Vrain Sanitation District Wastewater Treatment Facility Expansion APPROXIMATE LATITUDE & LONGITUDE: 40.184, -104.932 SOURCE: Precision Mapping Streets DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM* NO.: 0802660855C DATE: September 28, 1982 DATE OF EFFECTIVE FLOOD INSURANCE STUDY REPORT: September 22, 1999 PROFILE(S): 89P, 90P FLOODWAY DATA TABLE: 2 Enclosures reflect changes to flooding sources affected by this revision. * FIRM - Flood Insurance Rate Map; ** FBFM - Flood Boundary and Floodway Map *** FHBM - Flood Hazard Boundary Map FLOODING SOURCE(S) & REVISED REACH(ES) See Page 2 for Additional Flooding Sources St. Vrain River - from approximately 6,680 feet upstream of State Highway 66 to approximately 1,110 feet downstream of County Road 13 SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases St. Vrain River Zone A Zone AE YES YES No Floodway Floodway YES NONE No BFEs* BFEs* YES NONE Zone AE Zone AE YES YES * BFEs - Base Flood Elevations DETERMINATION This document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA) regarding a request for a Letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance Program (NFIP) map is warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals in your community. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.gov/business/nfip. Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.BKR.12080826P.H2O 102 -I -A -C Page 2 of 5 Issue Date: August 1, 2013 Effective Date: December 16, 2013 � Case No.: 12-08-0826P f LCr.1R-APP ""'4. r-RT,t..e. N. ''' Federal Emergency Management Agency =. 4� Washington, D.C. 20472 '-,(l AVD 5L y. LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) OTHER FLOODING SOURCES AFFECTED BY THIS REVISION FLOODING SOURCE(S) & REVISED REACH(ES) St. Vrain River - from approximately 6,680 feet upstream of State Highway 66 to approximately 1,110 feet downstream of County Road 13 SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases St. Vrain River Fleocway Floodway YES YES BFEs' BFEs' YES NONE ' BFEs - Base Flood Elevations This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.govibusinessinfip. ♦/ / ff 7. Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.BKR.12080826P.H20 102 -I -A -C Page 3 of 5 Issue Date: August 1, 2013 Effective Date: December 16, 2013 Case No.: 12-08-0826P LOMR-APP y;4?.Rrff�, Federal 4 _ Emergency Management Agency Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) COMMUNITY INFORMATION APPLICABLE NFIP REGULATIONS/COMMUNITY OBLIGATION We have made this determination pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (P.L. 93-234) and in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, P.L. 90-448), 42 U.S.C. 4001-4128, and 44 CFR Part 65. Pursuant to Section 1361 of the National Flood Insurance Act of 1968, as amended, communities participating in the NFIP are required to adopt and enforce floodplain management regulations that meet or exceed NFIP criteria. These criteria, including adoption of the FIS report and FIRM, and the modifications made by this LOMR, are the minimum requirements for continued NFIP participation and do not supersede more stringent State/Commonwealth or local requirementsto which the regulations apply. We provide the floodway designation to your community as a tool to regulate floodplain development. Therefore, the floodway revision we have described in this letter, while acceptable to us, must also be acceptable to your community and adopted by appropriate community action, as specified in Paragraph 60.3(d) of the NFIP regulations. COMMUNITY REMINDERS We based this determination on the base (1 -percent -annual -chance) flood discharges computed in the FIS for your community without considering subsequent changes in watershed characteristics that could increase flood discharges. Future development of projects upstream could cause increased flood discharges, which could cause increased flood hazards. A comprehensive restudy of your community's flood hazards would consider the cumulative effects of development on flood discharges subsequent to the publication of the FIS report for your community and could, therefore, establish greater flood hazards in this area. Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or State/Commonwealth law have been obtained. State/Commonwealth or community officials, based on knowledge of local conditions and in the interest of safety, may set higher standards for construction or may limit development in floodplain areas. If your State/Commonwealth or community has adopted more restrictive or comprehensive floodplain management criteria, those criteria take precedence over the minimum NFIP requirements. We will not print and distribute this LOMR to primary users, such as local insurance agents or mortgage lenders; instead, the community will serve as a repository for the new data. We encourage you to disseminate the information in this LOMB by preparing a news release for publication in your community's newspaper that describes the revision and explains how your community will provide the data and help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can benefit from the information. This revision has met our criteria for removing an area from the base floodplain to reflect the placement of fill. However, we encourage you to require that the lowest adjacent grade and lowest floor (including basement) of any structure placed within the subject area be elevated to or above the Base Flood Elevation. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.gov/business/nfip. .� L Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.BKR.12080826P.H2O 102 -I -A -C Page 4 of 5 Issue Date: August 1, 2013 Effective Date: December 16, 2013 Case No.: 12-08-0826P LOMR-APP yAR7tq 2� f Federal Emergency Management Agency a ti Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) We have designated a Consultation Coordination Officer (CCO) to assist your community. The CCO will be the primary liaison between your community and FEMA. For information regarding your CCO, please contact: Ms. Jeanine D. Petterson Director, Mitigation Division Federal Emergency Management Agency, Region VIII Denver Federal Center, Building 710 P.O. Box 25267 Denver, CO 80225-0267 (303) 235-4830 STATUS OF THE COMMUNITY NFIP MAPS We will not physically revise and republish the FIRM and FIS report for your community to reflect the modifications made by this LOMB. at this time. When changes to the previously cited FIRM panel and FIS report warrant physical revision and republication in the future, we will incorporate the modifications made by this LOMR at that time. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.govibusinessintip. .. rx Y Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.BKR.12080826P.H20 102 -I -A -C a Page 5 of 5 Issue Date: August 1, 2013 Effective Date: December 16, 2013 Case No.: 12-08-0826P LOMR-APP Federal Emergency Management Agency Washington, D.C. 20472 �nuo sw`� LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) PUBLIC NOTIFICATION OF REVISION PUBLIC NOTIFICATION A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or about the dates listed below and through FEMA's Flood Hazard Mapping website at https://www.floodmaps.fema.gov/fhm/Scriptsibfe_main.asp. LOCAL NEWSPAPER Name: The Greely Tribune Dates: August 9, 2013 and August 16, 2013 Within 90 days of the second publication in the local newspaper, a citizen may request that we reconsider this determination. Any request for reconsideration must be based on scientific or technical data. Therefore, this letter will be effective only after the 90 -day appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. Until this LOMR is effective, the revised flood hazard determination information presented in this LOMR may be changed. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.govibusinessinfip. Erin E. Cobb, CFM, Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration 132942 PT202.BKR.12080826P.H2O 102 -I -A -C BASE FLOOD WATER SURFACE ELEVATION ce �y V °d h V N V 0 0 0o M r O N WITHOUT WITH FLOODWAY FLOODWAY (FEET NGVD) 0 N 71- 4,792.1 4,797.1 4,805.6 4,804.5 (0 r d .0O C a IX d M CI 7I: coh N., 7 LO I-1 V ,--I m 0 o o N N 0O 00 d' V 74 OO C.: ?- isi w I— 01 - J W W W LL A'Q'W REGULATORY N N N v 4,791.6 4,796.7 4,805.4 4,804.1 FLOODWAY MEAN VELOCITY (FEET PER SECOND) 7 a N -- 4 vi N V h SECTION AREA (SQUARE FEET) Vl 'n Cr N F. N 00 in M N O co M 00 N vO WIDTH (FEET) a h V) -, a 0O O O N 0O O1 en M C M N N - - FLOODING SOURCE DISTANCE' a M I 6,680 8,570 10,760 12,170 C W Q a-- W G re CROSS SECTION St. Vran Creek € a>3X 2 N O J oi 'm'a w a N W w K G Cr ro b ii L CC FLOODWAY DATA FEDERAL EMERGENCY MANAGEMENT AGENCY oo W Z owco - 333113 MYNA US (SIM I/ U3 LV?IOd2I00AIINf1) `A.LNI103 £I.OZ'9Lnu'a3A113333 arlIdOZId 000ld 211NOlla313321 00 CHM A3N3DV IN3W3JVNVW A0NHDUN3 1V83Q3A 03 OD 0 o V 01 O3SIAMI 0 0 0 0 0 0 0 0 m °f V V V. 0 m +o` V ,d, Lt. HH 0 9000 9: NOT AVAILABLE AIL■::■::I ■I::L■.:I-I•:IEa&& L : In:m•■IGl II s =_L all IIIII;LL■fiII��■ a1 111 iFi!iIPi L ■n■■ . . a11H1 1LE NIn IIN111; Pill < _ .;p.. . , _, < °° t fi loll n:L ; as fifil�u;E �y; e�E";fiLfi IIL ;:L • fi; I A a = W < = Z Z . G■.:■. v. ■I im= E ≤≤≤ o ■■. ■. IIL ' t' 0 III ;; 1 I 'I'll' II� 8 ; I IIIIJIJJP. ! !III! 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