FS8601-CS 871102 _ 1
N i
J /987 D V
GINN, INC. CONSULTING EN
November 2, 1987
Mr. Alton S. Ray, P.E.
Acting Chief, Natural and Technological Hazards Division
Federal Emergency Management Agency - Region VI
Federal Center
800 North Loop 288
Denton, TX 76201 -3698
Re: Improvements to Andrew Brown Community Park
Denton Creek Floodplain - Coppell, TX
Dear Mr. Ray:
This letter is in response to your letter of October 6, 1987,
relating to a report submitted on September 21, 1987, to support
improvements to Andrew Brown Park.
1) The engineering analysis of hydrologic and hydraulic data
established that there was "NO IMPACT" on the base flood
elevations, floodway boundaries, or carrying capacity by
construction of the proposed improvements. We understood
that FEMA approval was not needed; but, the City of Coppell
considered the report necessary to make the determination
that there was "NO IMPACT ". The submittal to the Federal
Emergency Management Agency, although not required, was done
as a courtesy and indication that implementation of the
floodplain management program is being provided.
2) The "concession building" reference that was made in this
report was an afterthought, since it is not a part of the
Brown Park Improvements but, a separate project.
3) a. This project has been processed through the City. This
report is a result of City review and comments.
b. The lowest floor elevation of the concession building
will be 463.25 which is at or above the current effective
base flood elevation of 463 ±. It does not have to be
"floodproofed ".
We hope that this provides clarification that the structure meets
the floodplain management requirements. The City of Coppell has
accepted the report as sufficient documentation of "no impact on
the 100 -year water surface elevation or floodway width ". There
are no tennis court fences or buildings which will be an
obstruction within the regulatory floodway.
1 P �.� R� h i • S.,,ur,' 1(m • 1 • [)g:3 7't;a <': • Ph ,, . , 14 24Q-4900
As City Engineer and floodplain administrator for the City of
Coppell, we feel we have addressed your concerns. Should you
have any further questions or concerns, please contact us.
Sincerely,
H. Wayne Ginn, P.E.
GF /HWG /dsp
cc: Maryetta Cunningham - FEMA
Shohre Daneshmand - City of Coppell
Carl Anderson - PAWA- Winkelmann
Steve Goram - City of Coppell
Alan D. Ratliff - City of Coppell
Richard Diano - City of Coppell
Lee Richardson - City of Coppell
John Karlsruher
Gabe Favre
File 87365
attachment