ST9905DR-CS040127§~ Tayi~i- FW:.C°~)-pell Ro~d ~Va~e~'urface ~:~-e~a-tio__n .... i - pag~ '1 I
From:
To:
Date:
Subject:
<ccbond@transystems.com>
<staylor@ci.coppell.tx .us>
1/27/2004 6:26:30 PM
FW: Coppell Road Water Surface Elevation
Suzan,
You may also want to forward this e-mail to Loretta regarding water surface elevations. I still need to get a
copy of the drainage report, and a copy of the report prepared by Rudi. I'll get them over to you tomorrow.
Craig
> ..... Original Message .....
> From: DL-Charles Bond
> Sent: Thursday, November 20, 2003 1:48 PM
> To: 'clm@freese.com'
> Cc: FW-Mike Hobbs
> Subject: RE: Coppell Road Water Surface Elevation
> Chris,
> Mike Hobbs completed running another HEC-2 model that included the channel improvements between
Freeport and Coppell. The revised data is as follows:
> Proposed Conditions (calculated water surface elevations from HEC-2 Model using 2755 cfs)
> 505.28 (downstream face of culved at Coppell Road)
> 506.89 (upstream face of culvert at Coppell Road)
> 507.56 (70 ft upstream of culvert at Coppell Road)
>
> As you can see, the water surface elevations changed very little (note the Q was bumped up slightly to
2755 cfs). Please call if you have any questions/comments.
> Craig
> ..... Original Message .....
> From: DL-Charles Bond
> Sent: Wednesday, November 19, 2003 11:13 AM
> To: 'clm@freese.com'
> Cc: FW-Mike Hobbs
> Subject: FW: Coppell Road Water Surface Elevation
>
> Chris,
> I was discussing the proposed channel improvements (between Freeport and Coppell Road) with Mike
Hobbs yesterday and the water surface elevations for the proposed conditions below did not include
improvements to the channel itself. It only included the improvements proposing along Bethel Road (3
additional 5'xl 0' box culverts from the Post Office to Freeport). Mike will be running another HEC-2 model
that will include the channel improvements between Freeport and Coppell. I understand that we are in
backwater between Freeport and Coppell, so the revised water surface elevations should not change
much. If you have any additional hydraulic questions, please feel free to contact Mike Hobbs in our Fort
Worth office at 817-339-8950. Thanks.
> Craig
> ..... Original Message .....
> From: DL-Charles Bond
> Sent: Thursday, November 13, 2003 4:15 PM
> To: 'clm@freese.com'
> Cc: FW-Mike Hobbs
> Subject: Coppell Road Water Surface Elevation
suzan Taylor- FW_~C~ii-R_-~a~er~urfac~ Eiev ii - - ..... Page 2
> Chris,
> I spoke with Mike Hobbs in our Fort Worth office and he gave me the following water surface elevation
information which is tied to the FEMA Study for Grapevine Tributary G1:
>
> Existing Conditions (calculated water surface elevations from HEC-2 Model using 2300 cfs)
> 504.66 (downstream face of culvert at Coppell Road)
> 506.69 (upstream face of culvert at Coppell Road)
> 507.57 (70 ft upstream of culvert at Coppell Road)
> Proposed Conditions (calculated water surface elevations from HEC-2 Model using 2663 cfs)
> 505.17 (downstream face of culved at Coppell Road)
> 506.85 (upstream face of culvert at Coppell Road)
> 507.79 (70 ft upstream of culvert at Coppell Road)
> Please call if you have any questions or comments. I sent Trish a copy of the drainage report a year or
so ago. Do you have that copy, or do I need to e-mail you a copy of the drainage report and drainage area
map.
>
> Craig
>
> Craig Bond
> TranSystems Consultant Corporation
> 3010 LBJ Freeway, Suite 990
> Dallas, Texas 75234
> Ph 972-280-9300 x 225
> Fax 972-280-9715