ST8806-CS 900618 GINN, INC. C()NSIII,TING I£NGINI, !! I S
June 18, 1990
Mr. Steve Goram
city of Coppell
P.O. Box 478
Coppell, TX 75019
Re: Parkway Boulevard Improvements from Alex Drive to
Heartz Road - Change Orders No. 1 and No. 2
Dear Mr. Goram:
We are enclosing six copies of Change Orders No. 1 and No. 2 for
the subject project. Change Order No. 1 contains two items which
are necessary to complete the project and one which deletes some
unnecessary items. Change Order No. 2 involves the repair of the
existing curbs on the eastbound side of the street which were
damaged by earth moving operations of the last several years.
Change Order No. 1 increases the scope of work as follows:
1. The addition of a 4" PVC sleeve bored from the north parkway
to the median near the east end of the project to provide a
means for bringing water and power to the median for the new
irrigation system. This sleeve was supposed to have been
installed by the developer when the initial road
construction was done. It was apparently not installed
previously and it is necessary for the i~nstallation and
operation of the median irrigation system. As per the~
attached proposal from the Contractor, this item is
estimated to cost approximately $515.00.
2. The addition of an Irritrol MC+ 12 station controller for
operation and control of the new median irrigation system.
The plans called for the addition of a module to an existing
Weathermatic SSMA Controller. This controller is no longer
manufactured and the module required is not readily
available. In order to allow the system to function
properly and maintain a spare parts inventory, the Irritrol
Controller was selected for this system. This is the same
controller being used on Den%on Tap Road. As Der the
attached proposal from the contractor, this item will
increase the estimated contract amount by $725.00.
In the interest of saving money on the project, we propose to
eliminate all pavement markings except the jiggle bars for the
left turn lanes. Currently there are Ilo traffic buttons or
stripes on the other divided sections of this road nearby. The
estimated cost savings for this item is $1,737.60. The total
decrease in the estimated contract amount for Change Order No. 1
is $497.60.
17103 Prcston Road · Suitc 100 · I,IIII8 · l.)allas, Tcxas752,18 · Phone214/248-4900
Change Order No. 2 covers the work of removing and replacing the
curbs and possibly the pavement which was damaged by previous
earth moving operations across the pre-existing road section by
others. As per the May 31, 1990 letter from Centerline
Constructors, Inc. to Ginn, Inc., it appears that the estimated
total increase in the estimated contract amount for this item
could be $3,450.00 for the curb removal and replacement or a
total of $5,192.00 if the pavement removal' and replacement is
opted for.
Our measurements on site vary from the Contractor's and our rough
estimate of the cost of these items at the Contractor's proposed
unit prices is as follows:
1. Remove and replace curb and gutter
75 LF x $50.00/LF = $3,750.00
2. Barricades for Traffic Control = 450.00
Sub Total $4,200.00
3. Remove and replace concrete street pavement
42 SY x $67.00/SY = $2,814.00
Grand Total This Item $7,014.00
It is possible that there might be less pavement in need of
replacement than we have estimated which would lower the cost of
the proposed Change Order somewhat.
If either or both of these Change Orders is acceptable to you and
you wish to proceed with the work, please have the item or items
placed on the next available city Council Agenda. Call me if you
have questions.
Sincerely,
John C. Karlsruher, P.E.
Senior Engineer
JCK/dsp
enclosures
cc: H. Wayne Ginn, P.E.
File 89412