Billingsley-CS050414Halff Associates
ENGINEERS ' ARCHITECTS ° SCIENTISTS
PLANNERS ' SURVEYORS
8616 NORTHWEST PLAZA DRIVE
DALLAS, TEXAS 75225
(214) 346-6200
FAX (214) 739-0095
April 14, 2005
AVO 18398
Dr. M. Saleem Ashraf, P.E.
Michael Baker Jr., Inc.
FEMA Depot
3601 Eisenhower Avenue
Alexandria, Virginia 22304-6425
Re: Case No. 04-06-A148R - Request for a Conditional Letter of Map Revision and
Floodplain Development Permit for a Portion of a 158.6 Acre Tract on Grapevine
Creek, Coppell, TX.
Dear Dr. Ashraf,
Per the request of the reviewer for Case No. 04-06-A148R, please find an attached
workmap which extends the floodplain mapping from Belt Line Road to Cross Section
17600. Please note that floodplain and floodway delineations at cross sections in this
area are based on geometry of the sections from the model and not from the provided
topography.
If you have any additional comments or questions, please feel free to contact me at (214)
217-6690.
Sincerely,
HALFF ASSOCIATES, INC.
Russell P. Erskine
Hydrologist
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