Riverview Office-CS030623Y
From: "Tim Porter" <tporter@daa-civil.com>
To: "'Teresa Turner"' <tturner@ci.coppell.tx.us>
Date: 6!23!03 11:28:28 AM
Subject: RE: Riverview Office Development
Hey Teresa,
I hope you had a great weekend. Mine was too short... as always.
Anyway, I wanted to comment on some of the Riverview comments you
emailed to me and also ask some questions:
Point #1. I don't know what to do here. The drainage from A-5 will
remain the same pre- and post-construction of Sandy Lake. When the plans
for the road are produced, they should show the drainage going east to
west under the entrance drive. They will have to place a new storm sewer
line and headwalls, etc. since the flow will be reversed from the
direction it shown in our plans. Also, the low spot east of the entrance
drive will be filled in to accommodate this flow reversal per Sandy Lake
plans.
Point #2. Are you sure that you want the treatment on the west side? The
flow in the pipes is from west to east. It seems that the rip-rap
treatment would be best placed on the east side. Maybe I am confused.
Just let me know.
Point #3. The driveway approach limits have changed per my updates.
Point #4. The drainage flowing to the 5' inlet is 2.64 cfs. I believe
that the inlet is sized correctly as shown. Comment back if this is
incorrect.
Thanks for your open communication with me on this project. I am just as
anxious to get this off of may desk as you and the owner.
Thank You,
Timothy J. Porter, P.E.
Dowdey, Anderson, and Associates, Inc.
972.931.0694
----Original Message-----
From: Teresa Turner [mailto:tturner@ci.coppell.tx.us]
Sent: Thursday, June 19, 2003 5:48 PM
To: tporter@daa-civil.com
Subject: Riverview Office Development
Tim:
I was able to take a look at the plans with Ken and we have the
following comments.
1. It is unclear whether or not provisions have been made for Drainage
Area A-5 to pick up the additional runoff when Sandy Lake is improved
2. Include a headwall or slope treatment on the west end of the CMP or
SDR-35 pipe under the driveway onto Sandy Lake.
3. Show the proposed limits of the driveway approach that will be
removed and replaced with Sandy Lake Road and include a construction
joint. FYI -Ken is not in favor of removing and replacing the entire
limits of the driveway back to the inlet for Line B.
4. Rather than constructing a temporary flume in the driveway approach
as we had discussed, consider regrading the site to drain to the inlet
for Line B. This will accomodate the increased runoff when Sandy Lake
Road is improved. This may require a 10' inlet rather than the 5' inlet
as shown.
Please let me know if you have any questions. Thanks, Tim
Teresa Turner
972-304-3681