Carter Phase 2-CS 990618 Federal Emergency Management Agency
Washington, D.C. 20472
CERTIFIED MAIL IN REPLY REFER TO:
RETURN RECEIPT REQUESTED Case No.: 99-06-.734P
The Honorable Candy Sheehan Community: City of Coppell, Texas
Mayor, City of Coppell Community No.: 480170
255 Parkway Boulevard Panel Affected: 0010 E
Coppell, TX 75109 Effective Date of JUN 1 8 1999
This Revision:
102-I-C
Dear Mayor Sheehan:
This responds to a request that the Federal Emergency Management Agency (FEMA) revise the effective
Flood Insurance Rate Map (FIRM) for your community in accordance with Part 65 of the National Flood
Insurance Program (NFIP) regulations. In a letter dated February 10, 1999, Mr. Robert L. Wright, P.E.,
Vice President, Needham Wright Engineers, Inc., requested that FEMA revise the FIRM to show the
effects of placement of fill in the floodway fringe along Grapevine Creek from approximately 110 feet
upstream to approximately 1,120 feet upstream of Moore Road and excavation in the floodway along
Grapevine Creek from approximately 110 feet upstream to approximately 620 feet upstream of Moore
Road. In addition, this request included an updated hydraulic analysis that incorporated more detailed
topographic information to reflect existing watershed conditions along Grapevine Creek from Moore Road
to approximately 2,000 feet upstream. This request follows up on a Conditional Letter of Map Revision
issued on June 3, 1998.
All data required to complete our review of this request were submitted with letters from Mr. Wright.
We have completed our review of the submitted data and the flood data shown on the effective FIRM. We
have revised the FIRM to modify the floodplain boundary delineations of the flood having a 1-percent
chance of being equaled or exceeded in any given year (base flood) along Grapevine Creek from Moore
Road to approximately 2,000 feet upstream. As a result of the modifications, the width of the Special
Flood Hazard Area (SFHA), the area that would be inundated by the base flood, and the water-surface
elevations for Grapevine Creek increased in some areas and decreased in other areas. The flood profile
and base flood elevations were not revised because of scale limitations. No insurable structures are
affected by the increases in SFHA width. The modifications are shown on the enclosed annotated copy
of FIRM Panel(s) 0010 E. This Letter of Map Revision (LOMR) hereby revises the above-referenced
panel(s) of the effective FIRM dated April 15, 1994.
The modifications are effective as of the date shown above. The map panel(s) as listed above and as
modified by this letter will be used for all flood insurance policies and renewals issued for your community.
A review of the determination made by this LOMR and any requests to alter this determination should be
made within 30 days. Any request to alter the determination must be based on scientific or technical data.
We are preparing a revised FIRM and Flood Insurance Study (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 will present information from the effective FIRMs and FIS
reports for your community and other incorporated communities in Dallas County, will be distributed for
review in summer 1999. In order to avoid delays in processing, we will not incorporate the modifications
made by this LOMR into the preliminary countywide FIRM. However, we will incorporate these
modifications into the countywide FIRM and FIS report before they become effective.
This LOMR is based on minimum floodplain management criteria established under the NFIP. Your
community is responsible for approving all floodplain development, and for ensuring all necessary permits
required by Federal or State law have been received. State, county, and community officials, based on
knowledge of local conditions and in the interest of safety, may set higher standards for construction in the
SFHA. If the State, county, or community has adopted more restrictive or comprehensive floodplain
management criteria, these criteria take precedence over the minimum NFIP criteria.
The basis of this LOMR is, in whole or in part, a channel-modification project. NFIP regulations, as cited
in Paragraph 60.3(bX7), require that communities 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 regulations. Consequently, the ultimate responsibility for
maintenance of the modified channel rests with your community.
Because this LOMR will not be printed and distributed to primary users, such as local insurance agents and
mortgage lenders, your community will serve as a repository for these new data. We encourage you to
disseminate the information reflected by this LOMR throughout the community, so that interested persons,
such as property owners, local insurance agents, and mortgage lenders, may benefit from the information.
We also encourage you to prepare a related article for publication in your community's local newspaper.
This article should describe the changes that have been made and the assistance that officials of your
community will give to interested persons by providing these data and interpreting the NFIP maps.
This determination has been made pursuant to Section 206 of the Flood Disaster Protection Act of 1973
(Public Law 93-234) and is in accordance with the National Flood Insurance Act of 1968, as amended
(Title XIII of the Honsing and Urban Developmem Act of 1968, Public Law 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 minimum NFIP criteria. These criteria are the minimum and
do not supersede any State or local requirements of a more stringent nature. This includes adoption of the
effective FIRM to which the regulations apply and the modifications made by this LOMR. Our records
show that your community has met this requirement.
A Consultation Coordination Officer (CCO) has been designated 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, Texas 76201-3698
(940) 898-5127
3
FEMA makes flood insurance available in participating communities; in addition, we encourage
communities to develop their own loss reduction and prevention programs. Our Project Impact initiative,
developed by FEIMA Director James Lec Witt, seeks to focus the energy of businesses, citizens, and
communities in the United States on the importance of reducin~ their susceptibility to the impact of all
natural disasters, including floods, hurricanes, severe storms, earthquakes, and wildfires. Natural hazard
mitigation is most effective when it is planned for and implemented at the local level, by thc entities who
arc most knowledgeable of local conditions and whose economic stability and safety are at stake. For your
information, we are enclosing a Project Impact Fact Sheet. For additional information on Project Impact,
please visit our Web site at www.fema.gov.
If you have any questions regarding floodplain management regulations for your community or thc NFIP
in general, please contact the CCO for your community at the telephone number cited above. If you have
any technical questions regarding this LOMR, please contact Mr. Alan Johnson of our staff in Washington,
DC, either by telephone at (202) 646-3403 or by facsimile at (202) 646-4596.
Sincerely, ,~
Alan A. lo~ ~o~u, P.E., Project Engineer For: Matthew B. Miller, P.E., Chief
Hazards SrO( ~/Branch Hazards Study Branch
Mitigation Dtrectorate Mitigation Directorate
Enclosure(s)
cc: Mr. Kenneth Griffin, P.E. ,.//
Director of Engineering
City of Coppell
Mr. Robert L. Wright, P.E.
Vice President
Needham Wright Engineers, Inc.
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