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Home My WebLink About20191385 Ver 1_17-04-6242R Approval_20191009Federal Emergency Management Agency QART j, Washington, DC 204729q's North Carolina Floodplain Mapping Program F�gmo se°° Cooperating Technical State January 11, 2018 CERTIFIED MAIL RETURN RECEIPT REQUESTED The Honorable Miles Atkins Mayor, Town of Mooresville 413 North Main Street Mooresville, NC 28115 Dear Mayor Atkins: IN REPLY REFER TO: Case No.: Community Name: Community No.: 17-04-6242R Town of Mooresville, NC 370314 We are providing our comments with this enclosed Conditional Letter of Map Revision (CLOMR) on a proposed project within your community that, if constructed as proposed, could revise the effective Flood Insurance Study report and Flood Insurance Rate Map for your community. If you have any questions regarding floodplain management regulations for your community or the National Flood Insurance Program (NFIP) in general, please contact the Floodplain Administrator for your community. If you have any technical questions regarding this CLOMR, please contact the North Carolina Floodplain Mapping Program (NCFMP) at (919) 825-2316, or the Federal Emergency Management Agency (FEMA) Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on FEMA's website at https://www.fema.gov/national-flood-insurance-program, and additional information about the NCFMP is available at httns://www.ncfloodmays.com. Sincerely, Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration List of Enclosures: Conditional Letter of Map Revision John K. Dorman, Program Director North Carolina Floodplain Mapping Program cc: Mr. David Treme, Manager, Town of Mooresville Mr. Rawls Howard, Planning and Community Development Director, Town of Mooresville Ms. Rylee Hernandez, Stormwater Program Specialist, Town of Mooresville Ms. Miranda Salzler, P.E., CFM, Ecological Engineering, LLP Mr. Steve Garrett, CFM, LOMC Manager, North Carolina Floodplain Mapping Program Mr. John D. Brubaker, PE, CFM, NFIP Coordinator, North Carolina Emergency Management Program Page 1 of 5 Issue Date: January 11, 2018 Case No,: 17-04.6242B CLOMR-APP A F Federal Emergency Management Agency Washington, D.C. 20472 '•.�F�9Nn S6GJ` CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT COMMUNITY INFORMATION PROPOSED PROJECT DESCRIPTION BASIS OF CONDITIONAL REGUEST Town of Mooresville BRIDGE HYDRAULIC ANALYSIS Iredell County FLOODWAY North Carolina UPDATED TOPOGRAPHIC DATA COMMUNITY COMMUNITY NO.: 370314 NC-17-580 - Proposed W. Wilson Avenue Pedestrian Bridge at APPROXIMATE LATITUDE & LONGITUDE: 35.579,-80.833 IDENTIFIER Reeds Creek _ SOURCE: GoogleEarlh DATUM: MAD 83 AFFECTED MAP PANELS TYPE: FIRM` NO.: $710465700J DATE: 3/18/2008 • FIRM - Flood Insurance Rate Map FLOODING SOURCE AND REACH DESCRIPTION Reeds Creek - From approximately 700 feet downstream of West Wilson Avenue to approximately 1,700 feet upstream of West Wilson Avenue PROPOSED PROJECT DESCRIPTION Flooding Source Proposed Project Location of Proposed Project Reeds Creek New Bridge The Town of Mooresville proposes to construct a combination boardwalk and truss bridge to connect Golf Course Drive to West Wilson Avenue. The new pedestrian bridge will be located approximately 80 feet downstream of the West Wilson Avenue bridge. SUMMARY OF IMPACTS TO FLOOD HAZARD DATA Flooding Source Effective Flooding Proposed Flooding Increases Decreases Reeds Creek BFEs` BFEs` Yes None Zone AE Zone AE Yes None Floodway Floodway Yes Yes Zone X (shaded) Zone X (shaded) Yes None ` BFEs - Base (1-percent-annual-chance) Flood Elevations COMMENT This document provides the Federal Emergency Management Agency's (FEMA's) comment regarding a request for a CLOMR for the project described above. This document is not a final determination; it only provides our comment on the proposed project in relation to the flood hazard information shown on the effective National Flood Insurance Program (NFIP) map. We reviewed the submitted data and the data used to prepare the effective flood hazard information for your community and determined that the proposed project meets the minimum floodplain management criteria of the NFIP. Your community is responsible for approving all floodplain development and for ensuring that all permits required by Federal or State/Commonwealth law have been received. State/Commonwealth, county, and community officials, based on their knowledge of local conditions and in the interest of safety, may set higher standards for construction in the Special Flood Hazard Area (SFHA), the area subject to inundation by the base flood). If the State/Commonwealth, county, or community has adopted more restrictive or comprehensive floodplain management criteria, these criteria take precedence over the minimum NFIP criteria. This comment Is based on the flood data presently available. 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, 3601 Eisenhower Avenue, Suite 500, Alexandra, VA 22304-6426. Additional Information about the NFIP is available on the FEMA websi/te.,att https://�.fema.gov/national4lood-insurance-program. v ' __ma Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 17-04-6242R 104 Page 2 of 5 Issue Date: January 11, 2018 Case No.: 17-04-8242R CLOMR-APP OF ?I Federal Emergency Management Agency ,_,. Washington, D.C. 20472 UP CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION To determine the changes in flood hazards that will be caused by the proposed project, we compared the hydraulic modeling reflecting the proposed project (referred to as the proposed conditions model) to the hydraulic modeling used to prepare the Flood Insurance Study (FIS) (referred to as the effective model). If the effective model does not provide enough detail to evaluate the effects of the proposed project, an existing conditions model must be developed to provide this detail. This existing conditions model is then compared to the effective model and the proposed conditions model to differentiate the increases or decreases in flood hazards caused by more detailed modeling from the increases or decreases in flood hazards that will be caused by the proposed project. The table below shows the changes in the BFEs: BEE Comparison Table Flooding Source: Reeds Creek BEE Change (feet) Location of maximum change Existing vs. Maximum increase 1.4 Approximately 60 feet upstream of West Wilson Avenue Maximum decrease None Not applicable Effective Proposed vs. Maximum increase 0.8 Appoximatley 50 feet downstream of West Wilson Avenue Maximum decrease None Not applicable Existing Proposed vs. Maximum increase 1.4 Approximately 60 feet upstream of West Wilson Avenue Maximum decrease I None INot applicable Effective Increases due to the proposed project that exceed those permitted under Paragraphs (c)(10) or (d)(3) of Section 60.3 of the NFIP regulations must adhere to Section 65.12 of the NEW regulations. With this request, your community has complied with all requirements of Paragraph 65.12(a) of the NEW regulations. Compliance with Paragraph 65.12(b) also is necessary before FEMA can issue a Letter of Map Revision when a community proposes to permit encroachments into the effective floodplain/regulatory floodway that will cause BFE increases in excess of those permitted under Paragraph 60.3 (d) (3 )/60.3 (c) (10). NFIE regulations Subparagraph 603(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. This comment Is based on the flood data presently available. 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, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on the FEMA website at https:/A, .fema.gov/national-flood-insuranceprogram. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 17-04-62421`f 104 Page 3 of 5 Issue Date: January 11, 2018 Case No.: 17-04.6242R CLOMR-APP yCAR1,y o�16nr, o ;. .. {' z �+ Federal Emergency Management Agency ! , Washington, D.C. 20472 �t'1ND SF-OJ'.. CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) DATA REQUIRED FOR FOLLOW-UP LOMR Upon completion of the project, your community must submit the data listed below and request that we make a final determination on revising the effective FIRM and FIS report. If the project is built as proposed and the data below are received, a revision to the FIRM and FIS report would be warranted. • Detailed application and certification forms must be used for requesting final revisions to the maps. Therefore, when the map revision request for the area covered by this letter is submitted, Form 1, entitled "Overview and Concurrence Form," must be included. A copy of this form may be accessed at http://www.fema.gov/plan/prevent/fhm/dl_mt-2.shtm. • The detailed application and certification forms listed below may be required if as -built conditions differ from the proposed plans. If required, please submit new forms, which may be accessed at http://www.fema.gov/plan/prevent/fhm/dl_mt-2.shtm, or annotated copies of the previously submitted forms showing the revised information. Form 2, entitled "Riverine Hydrology and Hydraulics Form." Hydraulic analyses for as -built conditions of the base flood, the 10- percent, 2-percent, and 0.2 percent annual chance floods, and the regulatory floodway, must be submitted with Form 2. Form 3, entitled `Riverine Structures Form." • A certified topographic work map showing the revised and effective base and 0.2 percent annual chance floodplain and floodway boundaries. Please ensure that the revised information ties in with the current effective information at the downstream and upstream ends of the revised reach. • An annotated copy of the FIRM, at the scale of the effective FIRM, that shows the revised base and 0.2 percent annual chance floodplain and floodway boundary delineations shown on the submitted work map and how they tie into the base and 0.2 percent annual chance floodplain and floodway boundary delineations shown on the current effective FIRM at the downstream and upstream ends of the revised reach. • As -built plans, certified by a registered Professional Engineer, of all proposed project elements. • A copy of die public notice distributed by your community stating its intent to revise the regulatory floodway, or a signed statement by your community that it has notified all affected property owners and affected adjacent jurisdictions. • Documentation of the individual legal notices sent to property owners who will be affected by any widening or shifting of the base floodplain and/or any EFE increases along Reeds Creek. This comment is based on the flood data presently available. 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, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at hftps://www.fema.gov/nati/on�al�flood-insurance-program. Patrick "Rick' F. Sacblbit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 17-04-6242R 104 Page 4 of 5 Issue Date: January 11, 2018 Case No.: 17-04-6242R CLOMR-APP .OPART.lyE,1;, /i��i` T l� Federal Emergency Management Agency 3 �` r� Washington, D.C. 20472 '..F'gND StiGJ, CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) DATA REQUIRED FOR FOLLOW-UP LOMR (continued) • FEMA's fee schedule for reviewing and processing requests for conditional and final modifications to published flood information and maps may be accessed at https://www.fema.gov/forms-documents-and-software/flood-map-related-fees. The fee at the time of the map revision submittal must be received before we can begin processing the request. Payment of this fee can be made through a check or money order, made payable in U.S. funds to the National Flood Insurance Program, or by credit card (Visa or MasterCard only). Please either forward the payment, along with the revision application, to the following address: NC MT-2 LOMC Depot Attention: Steve Garrett 4218 Mail Service Center Raleigh, North Carolina 27699-4218 or submit the LOMR using the Online LOMC portal at: https://hazards.fema.gov/femaportal/onlinclome/signin After receiving appropriate documentation to show that the project has been completed, FEMA will initiate a revision to the FIRM and PIS report. Because the flood hazard information (i.e., base flood elevations, base flood depths, SFHAs, zone designations, and/or regulatory floodways) will change as a result of the project, a 90-day appeal period will be initiated for the revision, during which community officials and interested persons may appeal the revised flood hazard information based on scientific or technical data. This comment is based on the flood data presently available. 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, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https.,//www.fema.gov/na/tio�n�al-flood-insurance-program. Patrick "Rick" F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 17-04-6242R 104 Page 5 of 5 Issue Date: January 11, 2018 Case No.: 17-04.6242R CLOMR-APP A R Ai-111 J. O ®_ Nk-F Federal Emergency Management Agency �F7gND Washington, D.C. 20472 SE�J CONDITIONAL LETTER OF MAP REVISION COMMENT DOCUMENT (CONTINUED) COMMUNITY INFORMATION (CONTINUED) COMMUNITY REMINDERS 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. Jesse Munoz Director, Mitigation Division Federal Emergency Management Agency, Region IV Koger Center - Rutgers Building, 3003 Chamblee Tucker Road Atlanta, GA 30341 (770)220-5406 This comment is based on the flood data presently available. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) oil free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our w/ebs_it�tee athhtt�psJ:///w .f.ffeema.gov/national-flood-insurance-program. Patrick "Rick' F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration 17-04-6242R 104