Park West CC(1)-CS 901018ALBERT H. HALFF ASSOCIATES, INC.
ENGINEERS · SCIENTISTS · SURVEYORS
DALLAS · ARLINGTON · CHICAGO ~ FORT WORTH
8616 NORTHWEST PLAZA DRIVE · DALLAS. TEXAS 75225
2141739-0094
October 18, 1990
AVO 10751
U.S. Army Corps of Engineers
Operations Division
P.O. Box 17300
Fort Worth, Texas 76102
Mr. Wayne Lea
Chief, Permits Section
Re:
Wetlands Determination and Section 404 Permit Requirements for Grapevine Creek
- Southwestern Boulevard to IH 635 in CoppeR, Texas
Dear Mr. Lea:
Halff Associates is currently in the process of submitting a hydraulic study entitled
"Flood Plain Study on Grapevine Creek - Southwestern to IH-635" to FEMA for a
conditional letter of map revision. A copy of this study and the applicable USGS quad map
is enclosed for your review.
The project consists of the following improvements to the existing Grapevine Creek
channel:
1) Improvements to Southwestern Boulevard - Dual 163 foot bridge structures
2) A proposed rail spur crossing Grapevine Creek
3) A drop structure immediately downstream of IH 635 to control erosive
velocities.
The drop structure was approved previously by the City of Coppell and FEMA. It
includes approximately 600 feet of channelizafion which transitions from the existing 200 foot
bottom width channelized portion of the creek to the drop structure. Erosion protection is
required for a distance of approximately 80 feet downstream and upstream of the structure.
This drop structure and erosion protection affects less than one acre of flood plain land.
The bridge crossings'include only minor channel work under the structures with erosion
protection on the side slopes.
TRANSPORTATION * WATER RESOURCES * LAND DEVELOPMENT · MUNICIPAL · ENVIRONMENTAL · STRUCTURAL
SURVEYING · GLOBAL POSITIONING SYSTEM (G.P.S.) · REMOTE SENSING ANO MAPPING
LANDSCAPE ARCHITECTURE · PLANNING
ALBERT H. HALFF ASSOCIATES, INC.
ENGINEERS · SCIENTISTS · SURVEYORS
U.S. Army Corps of Engineers
October 18, 1990
Page 2
The existing 4000 feet of channelization from Southwestern Boulevard to upstream
of Freeport Parkway was constructed in 1983 by a previous property owner. A wetlands
determination (Project Number 8800~ ~.~ - c,~py attached) was obtained in September of 1988
for this reach of Grapevine Creek by Messinger Investment Company. However, the portion
of this project from the existing channelization upstream to IH 635 has not received a
determination. Property in this entire reach of Grapevine Creek has changed hands several
times over the past ten years but two of the current owners, Prentiss Properties Ltd., Inc.
and Catellus Development Corporation are beginning to develop industrial warehouse sites
in the area. It is on behaff of these developers and the City of Coppell that we are
requesting this wetlands and 404 permit determination. Representatives from our staff are
available for a field trip ff necessary.
Please feel flee to call if you have any questions or comments. Your assistance in
expediting this request will be greatly appreciated.
Yours very truly,
AI.I:iERT H. HAl .FF ASSOCIATES, INC.
CC:
Mike Tucker, Prentiss Properties
Shohre Daneshmand, City of Coppcll
Ron Morrison, Kimlcy-Hom and Associates