Billingsley-CS050825 214 361 5573
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HALFF ASSOC INC
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HALFF DALLAS FAX NO. (214) 361-5573
[ AVO NO. ~t/~'~ I [Ye,~ByC°PYMaiI?t° Follow
[] Urgent ~ For Review [] Please Reply No []
Comments:
NOTE: This cover sheet and its attachments are intended for the use of the addressee, and may contain
information that is privileged, confidential and exempt from disclosure under applicable law, You are hereby notified
that any unauthorized dissemination, distribution or copying of this Fax is strictly prohibited. If you have received
this Fax in error, please notify Halff Associates immediately.
Thank you,
08/25/05 Till 14:48 FAX 214 361 55711 [IAI,FF ASSOC INC [~002
I Halff Associates
ENGINEERS · ARCHITECTS · SCIENTISTS
PLANNERS · SURVEYORS
8616 NORTHWEST PLAZA DRIVE
OALLAS, TEXAS 75225
(214) 346-6200
FAX (214) 739-0095
August 25, 2005
AVO 23186
Keith R. Marvin, P.E.
City of Coppell Engineering Dept.
255 Parkway Blvd.
Coppelk Texas 75019
Faxed & Mailed
Re.'
Billingsley Floodplain Reclamation, Coppell, Texas
Rodman Excavation Submittal for Temporary Crossing of Grapevine Creek
Dear Mr. Marvin:
Enclosed is Rodman Excavation's submittal of the proposed temporary crossing of Grapevine
Creek for your approval. As requested, we modeled the temporary crossing to evaluate the effect
the crossing would have on the 100-year flood event. Based on a worst case scenario, the
crossing was modeled assuming it would remain in place during the entire flood event. Under
actual conditions, it is unlikely that the crossing would endure such an event.
The results of the analysis indicate the crossing would cause negligible changes in the upstream
and downstream water surface elevations.
In addition to the method of placement and removal contained in the submittal, the temporary
crossing shall meet the requirements contained in the Nationwide Permit (NVqP) 14 - "Linear
Transportation Crossings".
If you have any questions please call me at (214) 346-6244.
Sincerely,
HALFF ASSOCIATES, INC.
Mark W. McGraw, P.E.
Project Manager
enc: Rodman Companies Proposed Temporary Creek Crossing Submittal
Jim Pritchard, P.E., Pritchard Associates
William Walker, P.E., Biltingsley Company
Richard Fronterhouse, Rodman Companies
DALLAS · FORTWORTH · HOUSTON * McALLEN · AUSTIN · FRISCO · SANANTONIO
TRANSPORTATION * WATER RESOURCES * LAND DEVELOPMENT. MUNICIPAL * ENVIRONMENTAL * STRUCTURAL
MECHANICAL · ELECTRICAL · SURVEYING · GEOGRAPHIC INFORMATION SYSTEMS
ARCHITECTURE * LANDSCAPEARCH~TECTURE * PLANNING
08/25~05 THt 14:49 I:~.X 214 361 557,3 HAI,FF ASSOC 1NC ~]003
Ft~g 22 OS 02: llp rodm~n companies ~?~335451~ p. 1
FACSIMILE TRANSMITTAL SHEET
.M~rk McGraw Richarfl Fronrerhouse
lqalff Associates 8-22-05
214.361.5573
lie
~ L'RGEN I x FOR REV1EX~ [~ I't I<^SE COMMENT [] PLEASE REPLY [] pLEASE RECYCLE
Plan view for proposed Grapevine Creek crossing, summary of construction,
location of crossing.
683~ ASH S']'I{E[T
F I~,1S CO, TEXAS
972 ~35 - 4510 OFFICE
972 712 0971 FAX
08/25/05 '['HI' 14:49 FA~ 214 361 5573 [tAI,I:F ASSOC INC [~]004
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August 22, 2005
To: Mark McGraw, P.E.
Halff Associates
Fax - 214.361.5573
From: Richard Fronterhouse
Rodman Companies
Re: Grapevine Creek Temporaw Crossing.
I~lr. McGraw,
This letter's purpose is to summarize the necessary activities to construct a temporary creek
crossing over Grapevine Creek at the ~equest of the land owners involved in the Hemingway
Court (Irving side) and the future retail site (Copl~ell side) construction projects.
Activities include but are not limd.ed to:
:!.) Placement of 8' X 60' corrugated culvert into Grapevine Creek as marked on attached map.
2) Placement of fill material on top of the culvert compacted in lifts using a back-hoe and dozer,
to the existing elevation of either side of the high bank of Grapevine Creek.
3) Upon completion, the temporar'/crossing will stay in place for approximately twenty working
days.
4) After the export of soils from the Irving side to the Coppeil side, a back-hoe will remove the
creek crossing soils and pipe then return the creek wails back to their pre-existing grades.
Please feel free to contact me with any questions regar0ing this matter.
Sincerely,
Richard Fronterhouse
Rodman Companies
Office - 972.335 4510
Fax - 972.335.4844
fronterhous_e~rodmanexcavati0ri.corn
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