ST9902-CN040611TEAGUE NALL AND PERKINS
M� ENGINEERS ♦ SURVEYORS ♦ CONSULTANTS
June 11, 2004
Kenneth M. Griffin, P.E.
Director of Public Works and Engineering
City of Coppeli
255 Parkway
P.O. Box 478
Coppell, Texas 75019
RE: WEST SANDY LAKE ROAD
PROJECT # ST 99 -02
(TNP Project No. CPL00243)
Dear Ken:
The enclosed Modi ation to the Scope of Services for the referenced project has been
prepared, per our dis ssion with you last month, in accordance with the applicable provisions
of the Consulting Engin ers Contract. Please allow this letter to serve as our summary of
justification for the attach d modifications.
I. Project Schedule
a. Original Schedule In
Based upon the contract nguage, it was generally understood that time was to be
of the essence, and a prod ct schedule was developed to achieve the City's goals.
Portions of the established sc edule are itemized generally as follows:
• Preliminary design of 7 p ses 1 and 2 were to be completed in 2002.
• Final design for Phase 1 ould continue until completion in early 2003, with
bidding and construction fo Phase 1 to take place from mid -2003 until mid -
2004.
• Phase 2 final design was sche led to begin and be completed in mid -2003,
with bidding and construction to to ace from mid - 2004 to mid - 2006.
b. Revised Schedule Intent
Due to the need for a more fiscally conservative approach to the sale of bond funds,
the City determined that the design and construction schedule for the project would
be delayed. At the present time the following is a combined actual and projected
timeline:
• Preliminary design of Phase 1 was authorized to begin in early 2003, and
preliminary design of Phase 2 is projected to begin in mid -2004 and end in
early 2005.
• Final design for Phase 1 was authorized to begin in early 2004, with bidding
and construction for Phase 1 to take place from late 2004 to late 2005.
• Final design for Phase 2 is projected to begin early 2005, and end in late
2005, with bidding and construction to take place from mid 2007 to mid 2009.
12160 North Abrams Road, Suite 508 • Dallas, Texas 75243 • 214.461.9867 phone • 214.461.9864 fax
www.tnp- online.com
The attached Gantt chart graphically depicts the shift in schedule for the above described
project elements. As can be seen, delays in anticipated labor efforts typically range from
one to three years, depending on the phase /task of the project. These delays have
resulted in, and will continue to result in, increased operation and labor costs for TNP and
its subconsultants at each stage of the project that is beyond the originally intended
timeline upon which design fees were based, as well as cost associated with additional
effort to remobilize our design efforts after lengthy periods of inactivity on the project.
II. Scope of Work
a. Roadway Section
The project was to be designed as a 4 -lane roadway, from Denton -Tap Road to
State Rd. /Freeport Parkway and a 6 -lane roadway from State Rd. /Freeport Pkwy. to
S.H. 121, with a dividing median where possible to create a boulevard street section.
Also to be included was a 2' wide on- street bike lane in each direction of travel for
the entire length of the project.
However, at the beginning of Preliminary Design, the proposed roadway section was
modified by the City to reduce the 6 -lane section to a 4 -lane section with a wide
median for future expansion to 6- lanes, and reduce the pavement width to eliminate
the on- street bike lane. The subsequent revisions to previously agreed -upon
pavement limits, centerline alignments, etc resulted in additional re- design costs.
b. Existing Conditions
Due to the aforementioned schedule delays, existing physical conditions of the
project site had to be verified once the Phase 1 preliminary design was authorized,
and it was determined that the conditions had changed. Thus, re- survey and
additional design efforts were required to account for new developments that had
occurred during the delay or that were in the planning stages, such as Coppell Bible
Church, Amberpoint Development and the proposed warehouse facility. Additional
efforts included updated tree and topographic surveys, locating platted property
corners, re- evaluation of drainage areas and existing utilities, coordination with
developers, sidewalk revisions, and additional driveway /median considerations.
C. Funding Participation by Dallas County
The City informed TNP that it has secured partial funding from Dallas County for the
construction of Phase 2, which will necessitate that TNP and the City follow standard
County meeting and documentation procedures.
Thank you for the opportunity to meet with you to discuss these matters, and allow us to pursue
this contract amendment that would provide for an appropriate fee adjustment for TNP and its
subconsultants. Thank you for the opportunity to serve the City of Coppell on this important
roadway improvement project. We are privileged to work as an extension of your staff.
Sincerely,
TEAGUE NALL AND PERKINS, INC.
Mark J. Holliday, P.E.
xc: Michael A. Jones, P.E.
A
W
N
O
10
OD
V
01
C1�
A
W
N
p
O
O
V
m
O"
A
W
N
-+
a
W
D
W
v
'n
D
T
a
D
D D C)
to
o
CD
C.
m
C
a
o
CD
7'
m
g
d
°—'
o
(D'
a
—
a
-
,�
e,
m
m
x
m
(D
3
m
3
Z
ce
co
tG
m
m
U)
m
m
m
CL
�'
<_
m
d
ao
C
a
C
o
cc'
c 3i
to
3
a
m
<
0
m
O
CL
s
s
�
N
C
7
y
_
.�
0
su
N
`2
o
p1
n
m
3
cc
7
O
p'
>
O
..
p
?
y
m
N
y
m
D]
p
N
p m
U) n
S
O
n
n
0�
O
3
d
m En
(�
U)
3
CD
m
y
m
y
m
N
CD
r
n1
0
(0
N 7
d
N
N
N
3
(D
O.
CD N
7
d
d
co
m
w
y
N
CD
y
'
N
y
!D
m
N
�p
d
Q
N
N
■
O
O
J
N
m
O
N
(n
� N
O
3 C '
n n
r
a
m
m o_
C7
m
N
D O O
a
W
3
CD
N O
N
3
N
Cl
m
3
(/
N
O
Cl
N
N
O
O
Of
N
Cl
O
V
N
O
O
W
CITY OF COPPELL
Consulting Engineer's Contract
Modification to the Scope of Services
I. Project Schedule
The project schedule shall be modified according to the Actual and Projected timelines as
shown on the attached Gantt chart. If significant changes occur to the new schedule, then
additional contract modifications will be necessary. Generally, the new timeline goals are as
follows:
Complete Phase 1 Final Plans
Begin Phase 1 Construction
Phase 2 Preliminary Plans
Phase 2 Final Plans
Phase 2 Bidding /Construction
August 2004
4 th Quarter 2004
3r Quarter 2004 — 1 st Quarter 2005
2nd Quarter 2005 — 4 th Quarter 2005
2007 -2009
II. Scope of Work
a. Roadway Section
The project will be designed as a 4 -lane divided roadway, from Denton -Tap Road to
State Rd. /Freeport Parkway and a 4 -lane divided roadway from State Rd. /Freeport
Pkwy. to S.H. 121, with a wide dividing median to allow for a future 6 -lane divided
roadway section.
b. Existing Conditions
TNP shall confirm existing conditions of project site upon authorization to proceed with
design of each phase, including re- survey of platted boundaries, and associated
improvements. TNP shall design drainage systems, utility relocates, and
driveway /median openings to accommodate relevant new developments that occur
during significant project time delays.
C. Coordination with Dallas County
TNP shall coordinate as necessary with Dallas County during the design and
construction of Phase 2, including necessary meetings and documentation. Design and
plan preparation standards, including design software, shall remain as those used in
Phase 1.
III. Compensation
The Engineer shall be paid an additional lump sum fee for the above described Additional
Scope of Services in an amount of One Hundred and Fifty -three Thousand, Four Hundred and
no /100 Dollars ($153,400). This amount includes the following increases:
Engineering Design & Construction Services: $122,100
Design Surveys (Incl. Tree Survey): $2,400
Property Surveys & RNV -Esmt. Documents: $10,200
LandscapeArchitecture: $10,700
CLOW $1,700
LOMR: $1,700
Section 404 Permit Application: $2,600
Royal Lane Design: 2 000
TOTAL
$153,400
AGREED:
THE CITY OF COPPELL
By:
Date:
Attest:
AGREED /ACCEPTED:
TEAGUE NALL AND PERKINS, INC.
By:
Date:
Attest:
Page 2