Grapevine Creek-CS 910813 GIBSON & ASSOCIATES, INC.
Engineers and Contractors
P.112100, BoxRyliecrest 800579 ~~-..:. ...... ~"~"f'~"'~ 214/557-1199
75180-0579
August 13, 1991
~r. Patrick L. Acker, P.E.
Albert H. Halff Associates, Inc.
8616 Northwest Plaza Drive
Dallas, Texas 75225
Re: Gateway Business Park Drainage Structure
Dear Sir:
Enclosed is the concrete batch design we propose to use
on the verticle walls on the above referenced project.
If there are any questions regarding this matter, please
call me.
Yours very truly,
GIBSON & ASSQCIATES, INC.
A.J. Johnston
Vice President
AJJ/md
encl:
cc: Mr. Wayland Threadgill/Catellus Development Mr. Larry Davis/City of Coppell
Mr. Ron Reed/Reed Engineering Group