Alexander Ct-CS080111�. -.
(1115/200 Ken G riffin Re: FEMA letter recd today Page 1 I
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From: Ken Griffin
To: Rhonda Adloo
Date: 1/11/2008 11:03 AM
Subject: Re: FEMA letter rec'd today
Can you look at the case # for alexander and make sure this is it and not the east sandy lake.
KG
- - - -- Original Message---- -
From: Rhonda Adloo
To: Ken Griffin <KGRIFFIN @ci.coppell.tx.us>
Sent: 1/11/2008 10:55:05 AM
Subject: Re: FEMA letter rec'd today
07- 06 -2203P
2010) Ken Griffin - Re: FEMA letter recd today Page 1
From:
Rhonda Adloo
To:
Ken Griffin
Date:
1/11/2008 11:08 AM
Subject:
Re: FEMA letter rec'd today
Confirmed from file docs, it is Alexander case #
O�
a NATIONAL FLOOD INSURANCE PROGRAM
3 4 : FEMA NATIONAL SERVICE PROVIDER
ND S�
January 7, 2008
Mr. Michael H. Boyd, P.E.
Executive Vice President
Nathan D. Maier Consulting Engineers, Inc.
8080 Park Lane, Suite 600
Dallas, TX 75231
IN REPLY REFER TO:
Case No.: 07- 06 -2203P
Community: City of Coppell, TX
Community No.: 480170
316 -AD
Dear Mr. Boyd:
This is in regard to your submittal dated November 14, 2007, concerning a July 26, 2007, request that the
Department of Homeland Security's Federal Emergency Management Agency (FEMA) issue a revision to
the Flood Insurance Rate Map (FIRM) for the Dallas County, Texas and Incorporated Areas. Pertinent
information about the request is listed below.
Identifier: Grapevine Creek
Flooding Source: Grapevine Creek
FIRM Panel(s) Affected: 48113CO155 J
The data required to complete our review, which must be submitted within 90 days of the date of this
letter, are listed on the enclosed summary.
If we do not receive the required data within 90 days, we will suspend our processing of your request.
Any data submitted after 90 days will be treated as an original submittal and will be subject to all
submittal/payment procedures, including the flat review and processing fee for requests of this type
established by the current fee schedule. A copy of the notice summarizing the current fee schedule, which
was published in the Federal Register, is enclosed for your information.
FEMA receives a very large volume of requests and cannot maintain inactive requests for an indefinite
period of time. Therefore, we are unable to grant extensions for the submission of required data for revision
requests. If a requester is informed by letter that additional data are required to complete our review of a
request, the data/fee must be submitted within 90 days of the date of the letter. Any fees already paid will
be forfeited for any request for which the requested data are not received within 90 days.
If you have general questions about your request, FEMA policy, or the National Flood Insurance Program,
please call the FEMA Map Assistance Center, toll free, at 1- 877 -FEMA MAP (1- 877 - 336- 2627).
If you have specific questions concerning your request, please contact your case reviewer,
Mr. Kathirvel Arumugam, by e -mail at kathirvel.arumugam @mapmodteam.com or by telephone at
3601 EisenhowerAvenue, Alexandria, VA 22304 -6425 PH:1- 877 -FEMA MAP FX: 703.960.9125
The Mapping on Demand Team, under contract with the Federal Emergency Management Agency, is the
National Service Provider for the National Flood Insurance Program
Er?
(703) 960 -8800, extension 3026. You may also contact the Revisions Coordinator for your State,
M. Saleem Ashraf, Ph.D., P.E., by e -mail at saleem.ashraf @mapmodteam.com or by telephone at
(703) 317 -6225.
Sincerely,
'Sto qLtq k4
Syed Qayum, CFM
National LOMR Technical Manager
Michael Baker Jr., Inc.
Enclosures
cc: Mr. Ken Griffin, P.E.
Director of Engineering
Department of Public Works
City of Coppell
Oti
NATIONAL FLOOD INSURANCE PROGRAM
4 FEMA NATIONAL SERVICE PROVIDER
� SE
Summary of Additional Data Required to Support a
Letter of Map Revision
Case No.: 07- 06 -2203P
Requester: Mr. Michael H. Boyd, P.E.
Community: City of Coppell, TX Community No.: 480170
The issues listed below must be addressed before we can continue the review of your request.
I . Please submit a copy of the individual legal notice sent to all property owners affected by any
widening and/or shifting of the Special FIood Hazard Area, the area that would be inundated by the
base (1- percent annual- chance) flood, and/or any increases in the Base Flood Elevation (BFE). The
notice must include a descriptive explanation of these changes. Please follow the template for this
letter on page 17 of the instructions for the MT -2 Application/Certification forms, which may be
accessed at http://www.fema.gov/pdf/flim/mt-2.pdf.
2. Paragraph 65.6(a)(2) of the National Flood Insurance Program regulations states that to avoid
discontinuities between revised and unrevised flood data, hydraulic analyses must have a logical
transition between revised BFEs and those developed previously for areas not affected by the revision.
Our review revealed that the submitted post - project conditions hydraulic model for Grapevine Creek
does not tie into the effective hydraulic analysis within 0.5 foot at the upstream end of the revised
reach. Please provide a revised hydraulic model for Grapevine Creek that ties into the effective
hydraulic analysis within 0.5 foot, or within 0.0 feet if practical.
3. Please address the following comments regarding the submitted post - project conditions HEC -RAS
hydraulic models, or provide an explanation for each.
a. Our review revealed that the contraction and expansion loss coefficients at Cross Sections 25550
and 27620, which were 0.1 and 0.3, respectively, do not reflect modeling practices generally
accepted in HEC -RAS. Contraction and expansion loss coefficients of 0.3 and 0.5, respectively,
may be more appropriate.
b. Please revise the post - project conditions hydraulic model so that the left and right encroachment
stations at Cross Sections 23900, 27400, and 27900 are located at the left or right channel bank
stations or in the floodway fringe, the area between the channel bank station and the limits of the
base floodplain.
4. The submitted work map entitled, "Sheet 1, F000dplain Work Map," dated November 2007, prepared
by your firm, does not include the flow line, floodway and floodplain delineations between
Cross Sections 27900 and 30130. Please submit a revised topographic work map, certified by a
registered professional engineer, using an appropriate scale, that reflects any changes resulting from
Items 2 and 3 above, and contains all applicable items listed in Section C of Application/Certification
Form 2, entitled "Riverine Hydrology & Hydraulics Form," including the following:
a. The effective boundary delineations of the regulatory floodway, base floodplain, and
0.2- percent - annual -chance floodplain and how they tie into the post - project conditions boundary
delineations at the upstream and downstream limits of the revision area;
3601 Eisenhower Avenue, Alexandria, VA 22304 -6125 PH:1- 877 -FEMA MAP FX: 703.960.9125
The Mapping on Demand Team, under contract with the Federal Emergency Management Agency, is the
National Service Provider for the National Flood Insurance Program
b. The topographic information, with labeled contour lines, used for the floodway and floodplain
boundary delineations;
c. The locations and alignments of the cross sections used in the hydraulic analysis;
d. A north arrow, the scale, and the vertical datum; and
e. The flow line used in the hydraulic model.
If digital data are submitted, please include any supporting documentation or metadata with the data
submittal, including relevant projection information. Current mapping standards use the Universal
Transverse Mercator (UTM) projection and State Plane Coordinate System, in accordance with
Federal Emergency Management Agency mapping specifications. Data not submitted in ESRI
mapping format can be submitted in any supported data format, which includes AutoCAD,
Microstation, and MapInfo.
5. Please submit a copy of a certified, annotated Flood Insurance Rate Map (FIRM), at the scale of the
effective FIRM, which reflects any revisions made to the floodway and floodplain boundary
delineations as a result of Items 2 through 4.
Please send the required data directly to us at the address shown at the bottom of the fast page. For
identification purposes, please include the case number referenced above on all correspondence.
lit Federal Emergency Management Agency
WAShin0ofto M. 20492
FEE SCHEDULE FOR PROCESSING REQUESTS FOR MAP CHANGES
This notice contains the fee schedule for processing certain types of requests for changes to National Flood
Insurance Program (NFIP) maps. The fee schedule allows FEMA to further reduce the expenses to the NFIP by
more fully recovering the costs associated with processing conditional and final map change requests. The fee
schedule for map changes is effective for all requests dated October 1, 2007, or later and supersedes the fee
schedule that was established on October 30, 2005.
To develop the fee schedule for conditional and final map change requests, FEMA evaluated the actual costs of
reviewing and processing requests for Conditional Letters of Map Amendment (CLOMAs), Conditional Letters of Map
Revision — Based on Fill (CLOMR -Fs), Conditional Letters of Map Revision (CLOMRs) , Letters of Map Revision
Based on Fill (LOMR -Fs), and Letters of Map Revision (LOMRs).
Based on our review of actual cost data for Fiscal Years 2005 and 2006, FEMA has maintained the following
review and processing fees, which are to be submitted with all requests that are not otherwise exempted under
44 CFR 72.5.
Fee Schedule for Requests for CLOMAs, CLOMR -Fs, and LOMB -Fs
R est for single - lot/single- structure CLOMA and CLOMR- F ...............................................................
$ 500
R nest for single- lot/single structure LOMB- F
..................................... ...
Request for single - lot/single- structure LOMB -F based on as -built
$425
information (CLOMR -F previously issued by FEMA)
...................... ................ . . .. .........._............ - - - - -•
Request for multiple- lot/multiple- structure CLOMA
$325
... ...............
Request for multiple- lot/multiple- structure CLOMR -F and LOMB -F
$700
......................................................
Request for multiple- lodmultiple- structure LOMR -F based on as-built
$8Q0
information (CLOMR -F previously issued by FEMA)
.. .................. ......_................
$700
Based on our review of actual cost data for Fiscal Years 2005 and 2006, FEMA has established the following
review and processing fees, which are to be submitted with all requests that are not otherwise exempted.
Fee Schedule for Requests for CLOMRs
Request based on new hydrology, bridge, culvert, channel, or combination
ofany of these ............... ............................... ............................................. ............... ........... . . . .. $4,400
Request based on levee, berm, or other structural measure ......................... $5,500
Fee Schedule for Requests for Map Revisions
Requesters must submit the review and processing fees shown below with requests for LOMRs that are not based
on structural measures or alluvial fans.
Request based on bridge, culvert, channel, or combination of these ...................................................... $4
Request based on levee, berm, or other structural measure ...................... $6,500
Request based on as-built information submitted as follow -up to CLOMR ........................................... $4,800
Fees for CLOMRs, LOMRs, and PMRs Based on Structural Measures on Alluvial Fans
FEMA has maintained the initial fee for requests for CLOMRs and LOMRs based on structural measures on
alluvial fans to $5,600. FEMA will also continue to recover the remainder of the review and processing costs by
invoicing the requester before issuing a determination letter, consistent with current practice. The prevailing
private- sector labor rate charged to FEMA ($60 per hour) will be used to calculate the total reimbursable fees.
Payment Submission Requirements
Requesters must make fee payments for non. exempt requests before we render services. This payment must be in
the form of a check =anlerorbycredit card payment Please make all checks and money orders in U.S.
c funds yable to the Flood Insurance Program FEMA will deposit all fees collected to the National
t Flood Insurance Fund, which ss the source - of funding fix providing these services_
2010) Ken Griffin - Alexander Flood Study Page 1
From:
Ken Griffin
To:
Jim Witt, Clay Phillips, Gary Sieb
Date:
1/11/2008 1 1:12 AM
Subject:
Alexander Flood Study
FEMA rejected last submitted and gave them 90 days to resubmit data.
KG