ST8402-CS 881206 NC. CONSULTING ENGINEERS
GINN, I .
c ty -
ar Mr. Doyle. ~
This letter is in response to your handwritten memorand~ dated
11-23-88 concerning the addition of the paving of the west
intersection turnout of Parkway Blvd. to the Denton Tap Road
Improvements project. The answers to the ~estions of your
memorandum are as follows:
1. I estimate that the latest date for informing the
Contractor by way of Notice of Field Change that the
Parkway Blvd. turnout paving can be conveniently done
under the current Contract is Friday, Dece~er 9, 1988.
This work may be added at any time during the project,
however, but if decided upon soon enough it can be
accomplished with the current unit prices and within the
current const~ction se~ence-
2. This item would, and should, no,ally be covered by a
Change Order, and perhaps it should have been stated
more clearly previously. The procedure no,ally being:
issuance Notice of Field Change to the Contractor
notifying him of an impending change; and asking him to
respond with any additional costs or time extensions
re~ired to accomplish the anticipated work. If there
are to be any additional costs or time extensions, then
a Change Order must be issued to cover such costs and
time extensions. It was our understanding from a
meeting held with the city of Coppell (city Manager,
Staff, and Ginn, Inc.) and ABQ Development (and Jer~
Parche'), on Monday June 13, 1988 at 1:00 ~ in the
Rota~ Room of the Coppell To~ Center, that the City of
Coppell was to have this item included in the scope of
work of the current Contract, and therefore we have
brought it to your attention to allow you to direct us
to:
A.Proceed with the work and recieve Council approval
of a Change Order; or
B. Have the Contractor complete the work at a later date after Council approval of a Change Order.
............ ~.~ · quite 1~ · ~B't8 ~ Dall~,Tex~ 75248 · ~one214/248~
You may require that the funding be provided by the
ABQ, but it never entered into the preliminary
discussions with them. If we had been certain of the
actual roadway section planned west of Denton Tap Road
on Parkway Blvd. at the time that the plans were drawn,
we would have included the entire intersection in the
current project from day one. The reason being that in
order to complete the Traffic Signal design and work out
the final layout of the brick pavers, one must know all
of the geometric aspects of 'the intersection from the
beginning. Univest Development, the previous owner of
the ABQ property, was not able to move forward with
development plans at the time the plans were nearly
complete on this project. Therefore they never proposed
to the City of Coppell what they were going to build on
Parkway Blvd. west of Denton Tap Road, and we were
forced to finalize the Denton Tap Road Improvements
plans without the west turnout of the Parkway Blvd.
intersection in order to get the project underway as per
City Council direction. As originally planned, there
probably would not have been a request made of the
adjacent property owner provide any additional funding
for the turnout.
4. The only agreement of which we have any knowledge
concerning the west turnout of the intersection is the
meeting mentioned above. The remaining half of Parkway
Blvd. to be constructed east of Town Center could be
added to the subject Contract by negotiating a Change
Order with the Contractor as long as the value of the
Change Order did not exceed 25% of the Original
Estimated Contract Amount. It would be wise not to
include the amount of the respective Change Order in the
amounts to be collected by Street Assessments for the
project.
5. As you can see from the attached photocopy reduction of
the Parche' Consulting Engineers plans which accompanied
a copy of their plat, there are two lanes both east and
west bound, with a sinqle left turn lane eastbound.
Please call me if you have any further questions, and let us know
of your decision regarding the above.
Sincerely,
attachment
cc: John C. Karlsruher, P.E. Frank Trando
Shohre Danneshmand Steve Goram
MEMORANDUM
-r~4 ~oo
GINN, INC.
CONSULTING ENGINEERS
November 10, 1988
Mr. Russell Doyle, P.E.
City Engineer
City of Coppell
P.O. Box 478
Coppell, Texas 75019
Re: Denton Tap Road Improvements from Sandy Lake Road to Denton
Creek, Coppell, Texas.
Dear Mr. Doyle:
As ay part of the effort to get the Parkway Blvd. improvements
unde~ay, the City of Coppell had agreed to include the western
portion of the Denton Tap Road/Parkway Blvd. intersection in the
construction of the Denton Tap Road Improvements. It is our
intention to revise the plans to include the western part of the
intersection up to the ends of the curb returns as marked in red
pencil on the attached print. As with the median opening
requested by ABQ Development, this work can be included in the
scope of our work covering overall design of the project. If
agreeable to you, we will then issue a field change for the work
to accomplished by the Contractor under the existing unit prices
in the Contract.
If you have any questions, please feel free to call me.
S.i_nc~re~y,
John C. Karlsruher, P.E.
Project Engineer
Enclosure
cc: H. Wayne Ginn, P.E.
File J-379
A:J379PKWY
17103 Preston Road · Suite 100 · LB 118 · Dallas, Texas 75248 ~ Phone 214/2484900
P Jerry Parch Consulting Engineers
October 29, 1988
Mr. John Karlsruher,
Ginn, Inc.
17103 Preston Road
Suite 100, LB 118
Dallas, Texas 75248
214/248-4900
RE: JP No. 88009; Denton Tap Road;
Parks of Coppe11; Coppell, Texas
Dear John: ·
Pursuant to your request, enclosed is a drawing showing the
geometrics of the westerly turnout for Parkway Boulevard at the
intersection with Denton Tap Road. Distances are provided based
on location of ABQ property corners following dedication of
additional Right-of-Way, i.e. point numbers 454 and 462, at the
north and south ends of ABQ's frontage on Denton Tap Road.
Design of the turnouts is based on our surveyors location of the
centerline of existing Parkway Boulevard on the east side of
Denton Tap Road and your construction plans for Denton Tap Road
through the intersection. Our surveyors located the nails in the
Right-of-Way that were apparently set sometime ago (prior to
for the PC and PT of the
constructlo ) on the roadway centerline
5729.70 ft. centerline radius curve in Denton Tap Road. However
we adjusted the location of these points generally 0.2 ft. to the
north in order that the radius and delta of the design curve
remain valid with our geometry. Therefore, if the location of
the centerline PC and PT was preserved, they should not be used
for staking the proposed Parkway Boulevard turnout.
I would suggest using ABQ property corners for construction
staking of the proposed Parkway Boulevard turnout. Please notify
me if our surveyors can provide any assistance.
I hope that the information presented on the attached drawing is
sufficient for preparation of construction drawings for the
proposed Parkway Boulevard turnout. However, if you need
additional information, please call. Please advise US of the
westerly limits of this turnout once they are determined and
provide us a copy of the completed design when available.
6001 W. I~terstate 20. Suite 209. LB 32 · Arlington, Texas 76016 ' Metro (817] 572-3458" (817) 561-2108
Mr. John Karlsruher, P.E. October 29, 1988
JP No. 88009 Page 2 of 2
If we can provide further assistance, please call. Thank you.
Sincerel~
~Jerr¥ Perche' ,
JP:ch
Enclosure: Layout Sheet of Proposed Turnout
cc: Mr. Jay Chester, P.E./ABQ Development Corporation Mr. Russell Doyle, P.E./City of Coppell
Mr. Jack Crawford, R.P.S./Brittain and Crawford
ITEM lIDO
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