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ST0701-SY110602tiVNRTyf 10 w ND SE��4 Federal Emergency Management Agency CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Doug Stover Mayor, City of Coppell 255 Parkway Boulevard Coppell, TX 75019 Dear Mayor Stover: Washington, D.C. 20472 June 2, 2011 IN REPLY REFER TO: Case No.: 11-06-0227P Community Name: City of Coppell, TX Community No.: 480170 Effective Date of This Revision: October 17, 2011 The Flood Insurance Study Report and Flood Insurance Rate Map for your community have been revised by this Letter of Map Revision (LOMR). Please use the enclosed annotated map panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals issued in your community. Additional documents are enclosed that provide information regarding this LOMR. 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 Denton, Texas, at (940) 898 -5127, or the FEMA Map Information eXchange (FMIX) toll free at 1- 877 - 336 -2627 (1- 877 -FEMA MAP). Additional information about the NFIP is available on our Web site at lnttp: / /www.feina.gov /business /nfip. Sincerely, Michael J. McGinn, 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. Ken Griffin, P.E. Director of Engineering and Public Works City of Coppell Ms. Maria C. Martinez, P.E., CFM Halff Associates, Inc. For: Luis Rodriguez, P.E., Chief Engineering Management Branch Federal Insurance and Mitigation Administration Page 1 of 4 Issue Date: June 2, 2011 Effective Date: October 17, 2011 Case No.: 11- 06 -0227P LOMR -APP tiypRThj Federal Emergency Management Agency Washington, D.C. 20472 �L9ND StiGJ LETTER OF MAP REVISION DETERMINATION DOCUMENT COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST City of Coppell BRIDGE FLOODWAY Dallas County FILL HYDRAULIC ANALYSIS Texas NEW TOPOGRAPHIC DATA COMMUNITY COMMUNITY NO.: 480170 IDENTIFIER Southwestern Boulevard APPROXIMATE LATITUDE AND LONGITUDE: 32.949,-97.001 SOURCE: Precision Mapping Streets DATUM: NAD 83 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM* NO.: 48113CO135J DATE: August 23, 2001 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: June 16, 2005 TYPE: FIRM NO.: 48113CO155J DATE: August 23, 2001 PROFILE: 213P FLOODWAY DATA TABLE: 8 Enclosures reflect changes to flooding sources affected by this revision. * FIRM - Flood Insurance Rate Map FLOODING SOURCE AND REVISED REACH Grapevine Creek - from approximately 100 feet downstream of St. Louis Southwestern Railway to approximately 1,360 feet upstream of Southwestern Boulevard SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases Grapevine Creek Zone AE Zone AE YES YES BFEs* BFEs YES YES Floodway Floodway NO 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, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at http: / /www.fema.gov /business /nfip. Michael J. McGinn, Program Specialist Engineering Management Branch 11- 06 -0227P Federal Insurance and Mitigation Administration 102 -1 -A -C Page 2 of 4 Issue Date: June 2, 2011 Effective Date: October 17, 2011 Case No.: 11- 06 -0227P LoMR -APP ��YA�1�Ar Federal Emergency Management Agency 4� Washington, D.C. 20472 �lgND StiGJ 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 requirements to 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. NFIP regulations Subparagraph 60.3(b)(7) requires communities to ensure that the flood - carrying capacity within the altered or relocated portion of any watercourse is maintained. This provision is incorporated into your community's existing floodplain management ordinances; therefore, responsibility for maintenance of the altered or relocated watercourse, including any related appurtenances such as bridges, culverts, and other drainage structures, rests with your community. We may request that your community submit a description and schedule of maintenance activities necessary to ensure this requirement. COMMUNITY REMINDERS We based this determination on the 1- percent - annual- chance discharges computed in the LOMR Case No. 07- 06 -2203P and LOMR -F Case No. 02- 06 -2315P for your community without considering subsequent changes in watershed characteristics that could increase flood discharges. Future development of projects upstream could cause increased discharges, which could cause increased flood hazards. A comprehensive restudy of your community's flood hazards would consider the cumulative effects of development on discharges and could. therefore. indicate that Greater flood hazards exist in this area. Your community must regulate all proposed floodplain development and ensure that any permits required by Federal or State law have been obtained. State 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 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 LOMR 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 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, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at http: / /www.fema.gov /business /nfip. m� Michael J. McGinn, Program Specialist Engineering Management Branch 11- 06 -0227P Federal Insurance and Mitigation Administration 102 -I -A -C Page 3 of 4 Issue Date: June 2, 2011 Effective Date: October 17, 2011 Case No.: 11- 06 -0227P LOMB -APP Oti4A��F.L Federal Emergency Management Agency x �w ° 4~ Washington, D.C. 20472 �lAND S�GJ LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) This revision has met our criteria for removing an area from the 1- percent - annual- chance 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 (1- percent - annual- chance) Flood Elevation. 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: Mr. Frank Pagano Director, Mitigation Division Federal Emergency Management Agency, Region VI Federal Regional Center, Room 206 800 North Loop 288 Denton, TX 76209 (940) 898 -5127 STATUS OF THE COMMUNITY NFIP MAPS We are processing a revised FIRM and FIS report for Dallas County in our countywide format; therefore, we will not physically revise and republish the FIRM and FIS report for your community to incorporate the modifications made by this LOMR at this time. Preliminary copies of the countywide FIRM and FIS report, which present information from the effective FIRMs and FIS reports for your community and other incorporated communities in Dallas County, were submitted to your community for review on June 22, 2007. We will incorporate the modifications made by this LOMR into the countywide FIRM and FIS report before they become effective. 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, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at http: / /www.fema.gov /business /nfip. mm��''� //,, // v/o Michael J. McGinn, Program Specialist Engineering Management Branch 11- 06 -0227P Federal Insurance and Mitigation Administration 102 -I -A -C Page 4 of 4 Issue Date: June 2, 2011 Effective Date: October 17, 2011 Case No.: 11- 06 -0227P LOMB -APP OtieA�1�`L Federal Emergency Management Agency Washington, D.C. 20472 �LgND StiG� LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) PUBLIC NOTIFICATION OF REVISION PUBLIC NOTIFICATION FLOODING SOURCE LOCATION OF REFERENCED ELEVATION BFE (FEET NGVD) MAP PANEL EFFECTIVE REVISED NUMBER Grapevine Creek Just upstream of St. Louis Southwestern Railway 503 504 48113CO155J Approximately 250 feet upstream of Southwestern 507 508 48113CO135J Boulevard 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 BFEs presented in this LOMR may be changed. 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. Please refer to FEMA's Web site at https: / /www.floodmaps. fema .gov /fhm/Scriptsibfe _ main.asp for a more detailed description of proposed BFE changes, which will be posted within a week of the date of this letter. LOCAL NEWSPAPER Name: Citizens' Advocate Dates: 6/10/2011 and 6/17/2011 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, 7390 Coca Cola Drive, Suite 204, Hanover, MD 21076. Additional Information about the NFIP is available on our Web site at http: / /www.fema.gov /business /nfip. Michael J. McGinn, Program Specialist Engineering Management Branch 11- 06 -0227P Federal Insurance and Mitigation Administration 102 -I -A -C H 26 8512 BASE FLOOD FLOODING SOURCE FLOODWAY WATER- SURFACE ELEVATION! q � 1 316802 Vw l WITH CROSS SECTION DISTANCE MUM SE4nON AREA MEAN VEI.00RY REl3UUTORY ELOODWAY FLOOOSA64Y NNCRFJISE (FEET] (SQUkRE FEET) MEET PER (FUT NOM Glenn Branch A 680' 64 576 8,2 636.8 636.8 637.8 1.0 B 1,940' 58 531 8.1 6444 644.4 645.2 0.8 C 2,750' 55 343 8.6 650.4 650.4 651.2 0.8 D 3,670' 69 464 6,4 658.7 658.7 659.6 0.9 E 5,100, 130 479 6.2 688.9 698,9 689,9 1.0 Grapevine Creek A 8.500 300 1,778 5.5 439.6 438.53 438.5' 0.0 B 12,900 940 3,141 3.1 449,0 448,0 448.5 0.5 C 14,170= 470 2,074 5.3 453.0 453.0 453.8 0.8 D 16,543' 638 4,624 2.4 461.5 461.5 462.3 0.8 E 20,7003 370 3,063 3.9 471.5 471.5 472.3 0.8 F 22,7003 200 1,566 7.5 478.0 478.0 478.4 0.4 G 24W 349 2,499 4.7 482.5 482.5 482.9 0.4 Tributary G-1 REVISED BY of Grapevine LOMR DATED REVISED DATA Creek April 24, 2008 A 945` 137 777 4.0 493.7 493,7 493.7 0.0 B 3,125' 82 432 7.3 499.5 499.5 499.7 0.2 'Pm dww m A 'F at rbo+v oDnff m •rich Elm Fork Trani 1Uvtr Jvatkm ca wWmm ransidrruioo of from Fim Fort T ' ' River 'Feet abo" tordkwwe whh a Time CrwA T FEDEMkLEMERGEN�CYMANAGEMENTAGENCY FLOODVIIAY DATA e DALLAS COUNTY, TX GLENN BRANCH - GRAPEVINE CREEK - AND INCORPORATED AREAS REVISED o TRIBUTARY G -i OF GRAPEVINE CREEK REFLECT OMR d EFFECTI : October 17, 2011 H 26 8512 136 1,061 11.2 488.3 q � 1 316802 239 � 3.5 508.2 508.2 508.5 0.3 0 0 ZONE X J KAYE J W CITY OF o — COPPELL 480170 LIMIT OF DETAILED STUDY ZON LOCH AVENU STREET of Grapevine BETHEL v ROAD o AREA REVISED ZON E A o BY LOMR DATED � APRIL 24, 2008 Q Y ZONE AE CL a O Grapevine 0 Creek ZONE X ZONE AE :T I OUI �— RAILWAY O a W W Iz LL SOUTHWESTERN I BOULEVARD LIMIT OF ZONE / STUDY MEW Grapevine Creek AIRLINE ZONE X is �0 `rte RM200 DRIVE FLOOD HAZARDS SHOWN OUTSIDE THE CITIES OF COPPELL, DALLAS, AND IRVING ARE FOR INFORMATION PURPOSES ONLY. FOR FLOOD INSURANCE PURPOSES REFER TO SEPARATELY PUBLISHED FLOOD INSURANCE RATE MAPS. 0 J W Z d U) z 0 507 508 REVISED AREA u Legend 1% annual chance (100 -Year) Floodplain 1% annual chance (100 -Year) Floodway 0.2% annual chance (500 -Year) Floodplain l& APPROXIMATE SCALE IN FEET 1000 500 0 1000 FEET u NATIONAL FLOOD INSURANCE PROGRAM FIRM n FLOOD INSURANCE RATE MA DALLAS COUNTY, ® TEXAS 0 AND INCORPORATED AREAS D PANEL 135 OF 725 (SEE MAP INDEX FOR PANELS NOT PRINTED) CONTAINS: a COMMUNITY NUMBER PANEL SUFFI O COPPEL, CITY OF 480170 0135 ,I TITD DALLAS, CITY OF 480171 0135 ,I IRVING, CITY OF 480180 0135 ,I REVISED TO ® REFLECT LOMR ® EFFECTIVE: October 17, 2 ® Notice to User: The Map Number shown below should be used when placing map orders; the community Number shown above should be used on insurance applications for the subject community. oti�"F�� MAP NUMBER „ 48113COl35 J ��'F '~ CD o�� EFFECTIVE DATE: tgND SEA AUGUST 23, 2001 a Federal Emergency Management Agency u Legend 1% annual chance (100 -Year) Floodplain 1% annualchance (100 -Year) Floodway 0.2% annual chance (500 -Year) Floodplain Q CITY OF' CO►PPELL APPROXIMATE SCALE IN FEET z 4, 0170 1000 500 0 1000 w BETHEL SCHOOL FEET ROAD ROAD ZONE ECN�� AE w NATIONAL FLOOD INSURANCE PROGRAM r`ni AREA REVISED 0 � o Z z g 490 BY LOMR- -DATED � FIRM w y p APRIL 24, 2008 Y U ZONE AE MEADOW CREEK ° z FLOOD INSURANCE RATE MA o- z 488 � 487 ROAD = DALLAS COUNTY, Q ZONE AE ® B TEXAS 494 D AND INCORPORATED AREAS Tributary G -1 491 RM199 b PANEL 155 OF 725 of Grapevine o 493 ZONE X 482 (SEE MAP INDEX FOR PANELS NOT PRINTED) Creek 493 Grapevine 484 CONTAINS: COMMUNITY NUMBER PANEL SUFFIX a BETHEL ROAD 494 Creek 483 ° ZONE X 484 CARROLTON, CITY OF 480187 0155 ZONEX COPPEL, CITY OF 480770 0155 � DALLAS, CITY OF 480171 0155 IRVING, CITY OF 480180 0155 Grapevine Creek REVISED TO S 0o RAILWAY ® REFLECT LOMR ® GLENDAL EFFECTIVE: October 17, 2011 502 SOLJ'(HW ESTERN DRIVE ® Noticeto User:The Map Number shown below should be ZONE X ST. LOUIS CITY OF used when placing map orders; the community Number shown above should be used on insurance applications for the subject community 504 . DALLAS o ZONE AE 8 480171, a�eA�R1Fti MAP NUMBER 4811300155 J BELTLINE ROAD ® ��4� �t9ND StiLJ EFFECTIVE DATE: REVISED IMI AUGUST 23, 2001 AREA Z I ZONE X E IM w Federal Emergency Management Agency m .1