WA9701-CS050809 (2)! Suzan Taylor - DTR WL Page 1 I
From:
To:
Date:
Subject:
"Doug Showers" <DShowers@BHCLLP.COM>
<staylor@ci.coppell.tx.us>
8/9/2005 3:30:04 PM
DTR WL
The field survey information gathered today confirms that we are not
able to construct a SS above the Box culvert.
After looking at the information more closely, it appears to me that
the existing SS most likely is capped at a location under the westmost
pavement lane. If we block off one lane of pavement and are careful as
we excavate, to a likely depth of 13 to 15 feet the contractor should
find the SS line.
Scope of work will be as follows:
1. Cone off ONE lane of southbound traffic.
2. Cut and remove pavement, probably 8 ftx 10 ft.
3. Excavate with trench box being careful not to damage the existing 8
"Water line and the adjacent storm drain if it comes into play.
4. Find the SS line and extend it at least 20 feet back into the Davis
property, install a manhole or plug it and mark it for future.
5. Backfill and replace the pavement and curb, re-opening the lane to
traffic.
6. Cone off ONE lane of northbound traffic and a part of the entrance
to the Mercantile.
7. Cut and remove pavement to find the abandoned manhole.
8. Excavate with trench box being careful not to damage the existing SS
line and find the manhole and the line. Determine the work required to
salvage the line and replace the manhole and connection to the 15" SS.
9. Backfill and replace the pavement and curb, re-opening the lane and
driveway to traffic.
No estimate of cost. It could take a couple of weeks to complete.
We do not have any of this scope in this contract, so please consult
Ken and Keith regarding what we are to do in this contract, so the plans
can be finalized.
This may be a project for a City crew, or an on-call contractor rather
than part of the water line. I say this because it will be difficult to
bid it without having an opportunity for a change order with changed
conditions.
Thank you,
Douglas K. Showers, P.E.
Birkhoff, Hendricks & Conway, L.L.P.
7502 Greenville Ave., ~r220
Dallas, Texas 75231
Phone: (214) 361-7900
Fax: (214) 361-0204