Item 9BCITY OF
SOUTH LAKE
MEMORANDUM
(April 2, 2013)
To: Shana Yelverton, City Manager
From: Robert H. Price, P.E., Director of Public Works
Subject: Approve Contract Amendment No. 4 with Nathan D. Maier
Consulting Engineers, Inc. for White Chapel Boulevard from
State Highway 114 to East Highland Street in the amount of
$53,316
Action
Requested: Approve Contract Amendment No. 4 with Nathan D. Maier
Consulting Engineers, Inc. for White Chapel Boulevard from State
Highway 114 to East Highland Street in the amount of $53,316
Background
Information: In October 2008, Nathan D. Maier Consulting Engineers, Inc.
(NDM) was hired to design the North White Chapel Boulevard
Improvement project from the intersection at State Highway 114
down to, and including, the intersection of Highland Street. The
White Chapel Boulevard Improvement project design was for a
standard four lane divided roadway with a raised and landscaped
median.
The original professional services agreement (design contract) in
the amount of $264,859 included survey for the entire length of the
project, design of the roadway, a hydraulic report of Dove Creek to
properly size the proposed storm sewer box culverts near State
Highway 114, determination of right of way needs and
corresponding exhibits, geotechnical investigations to determine
pavement design, and design for relocating existing water and
sewer utilities within the corridor to accommodate the proposed
roadway. The original design contract signed in 2008 was for the
final design, bid documents and construction phase services of the
White Chapel Boulevard Improvement project.
NDM prepared and submitted conceptual design to the city for
review of a conventional four -lane divided roadway using the
existing centerline and taking right of way equally from both sides of
the proposed roadway. It was later determined that the straight
roadway alignment of White Chapel Boulevard should be shifted at
the intersection of Highland Street so that no additional right of way
will be required from the Southlake Church, due to the proximity of
the existing building to the right of way. Since the property at the
northwest corner of the intersection belongs to the City, there would
also be a cost savings in the right of way acquisition by shifting the
horizontal alignment of the roadway to the west.
Supplemental Agreement No. 1, in the amount of $12,285 was
approved by the City Manager in January, 2010 to revise the
horizontal alignment of White Chapel Boulevard at the intersection
of Highland Street to the west and add 2 feet of pavement on both
sides of the road for bike lanes. The design fee for the revision
also included revising the new typical sections of the roadway to
include the additional 2' on each side of the road to accommodate
bike traffic.
NDM coordinated with design engineers for the White Chapel
Countryside Office Park and made alignment recommendations for
the city's waterline construction project along Highland Street,
which is now complete. NDM had also revised the schematic
layout at the intersection and submitted it to staff for review.
Design had progressed to nearly 30% when the city suspended
work on the roadway design to allow consideration of alternative
traffic control methods at the Highland Street intersection.
Traffic circulation issues at Carroll High School caused the staff to
reconsider operation of the Highland Street intersection. Several
different types of intersection control methods were evaluated to
determine the most advantageous approach. A traffic engineering
consultant looked at the costs and level of service (LOS) for two
way stop control, four way stop control, traffic signal control, a
single lane roundabout, and a dual lane roundabout. Staff has
presented these options to members of the City Council and
Planning and Zoning Commissioners at two Southlake 2030 work
sessions. Summarizing those discussions, the two way and four
way stop control intersection and the single lane roundabout will not
efficiently handle the projected 2019 volume of traffic without
excessive delay. Signal control would be useful during the morning
and afternoon peak periods, but would not operate efficiently during
the remainder of the day and would impose continuing
maintenance and operation costs. The dual lane roundabout, does
improve capacity at the intersection and creates the least delay for
drivers of the options considered. Council and Planning and
Zoning members of the 2030 committee directed Staff to move
forward with the design of a dual lane roundabout at the
intersection of North White Chapel Boulevard and Highland Street.
Supplemental Agreement No. 2, in the amount of $173,827 was for
the completion of design of White Chapel Boulevard along a
revised alignment to avoid taking right of way from Southlake
Church and included a dual lane roundabout at the intersection of
Highland Street.
The revised scope as outlined in Supplemental Agreement No. 2
included additional survey of up to 350' beyond the original limits of
Highland Street and up to 500' north of Highland Street along White
Chapel to accommodate the dual lane roundabout and the revised
alignment of the intersection. The agreement also included
landscaping and irrigation design of the proposed roundabout and
the center medians along White Chapel Boulevard. Subsurface
utility engineering work was to be performed in order to verify the
location of existing water and sanitary sewer lines and any other
private utilities within the corridor that will need to be relocated prior
to beginning construction. The utility design included the relocation
of existing sanitary sewer mains which will be in conflict with the
new pavement. The drainage design was updated to incorporate
the drainage from the new Countryside White Chapel Office Park
development that has been constructed since the original drainage
study was performed by NDM. Finally, the revised scope included
final engineering plans, traffic control and sequencing for
construction, contract documents, bidding of the construction
project and construction administration.
Supplemental Agreement No. 3, in the amount of $14,778 was for
re -alignment of White Chapel Boulevard to tie-in to the White
Chapel Boulevard Reconstruction project from Emerald Boulevard
to Highland Street. Changes also included lowering the elevations
of the roundabout subsequently resulting in the redesign of utilities
to lower them as well.
The revised scope for Supplemental Agreement No. 3 coordinated
the connection point between the two separately engineered White
Chapel widening projects. The White Chapel Boulevard
Reconstruction project from Emerald Boulevard to Highland Street
had a design that ended the pavement at a point 500 feet south of
Highland and transitioned into the existing pavement. The design
plans under this contract scope ended the pavement south of the
dual lane roundabout and had a design transition to existing
pavement at a point 500 feet south of Highland Street.
Supplemental Agreement No. 3 eliminated the transitions in each
set of plans and coordinated the matchline point. This caused for
some alignment changes through the transistions to marry the
plans. The roundabout was also lowered to eliminate a retaining
wall at the roundabout along the Southlake Church property.
The revised scope as outlined in Contract Amendment No. 4
includes design for 1,250 linear feet of a new 8 inch sanitary sewer
gravity extension. The proposed line will run from approximately
400 feet south of Highland Street north to an existing lift station
located at Countryside Court. The amendment also includes
coordination services for right of way acquisition and additional right
of way and easement document preparation.
8-inch Sanitary Sewer Design $12,086
Right of Way Acquisition Coordination $ 5,115
Additional Right of Way Documents $36,015
Reimbursable Expenses $ 100
Total Amendment No. 4 $53,316
The proposed amendment brings the total engineering design cost
for the White Chapel Boulevard from State Highway 114 to East
Highland Street Project to $519,065.
The schedule going forward anticipates that the design will be
completed summer 2013. Right of way acquisition is currently in
progress and is anticipated to be completed late summer 2013.
Relocation of the franchise utilities (electric, gas, phone, etc.) will
begin when right of way is available and should be completed by
early 2014. Staff anticipates the construction to be awarded in the
2nd quarter of 2014.
Financial
Considerations: Funds for the engineering design of the White Chapel Boulevard
Improvement project are included in the previously approved
Capital Improvements Program project budget.
Strategic Link: The construction of the North White Chapel Boulevard
Improvements project links to the city's strategy map relative to the
focus areas of Mobility, Infrastructure and Performance
Management and Service Delivery. The specific corporate
objectives that are met by the construction of this project include:
C2 - Provide travel convenience within the City and the region, B4 -
Provide high quality customer service, and F2 - Invest to provide
and maintain high quality public assets.
Citizen Input/
Board Review: N/A
Legal Review: This is the standard construction services contract that has been
previously reviewed by the City Attorney.
Alternatives: The Council may approve the Amendment to the existing
Professional Services Agreement or deny it.
Supporting
Documents: Location Map
Nathan D. Maier Consulting Engineers, Inc. Contract
Amendment No. 4
Staff
Recommendation: Approve Contract Amendment No. 4 with Nathan D. Maier
Consulting Engineers, Inc. for White Chapel Boulevard from State
Highway 114 to East Highland Street in the amount of $53,316
Staff Contact: Robert H. Price, P.E., Public Works Director
Gordon J. Mayer, Jr., P.E., City Engineer
Cheryl Taylor, P.E., CFM, Assistant City Engineer
Steven D. Anderson, P.E., CFM, Civil Engineer
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NATHAN D. MAIER
CONSULTING ENGINEERS, INC.
Two Park Lane Place
8080 Park Lane, Suite 600
Dallas,TX 75231
March 25, 2013
(P) 214.739.4741
(F) 214.739.5961
Texas Reg. No. F-356
www.ndmce.corn
Mr. Gordon J. Mayer, Jr., P.E.
WBE/SBE/HUB
Public Works Deputy Director
City of Southlake
1400 Main Street, Suite 320
Southlake, TX 76092
Re: White Chapel Boulevard from E. Northwest Parkway (SH Il4) to E. Highland
Street for the City of Southlake, Texas
Supplemental Agreement No. 4
NDM Job No. 08-076
Dear Gordon:
Attached please find the supplemental agreement for the above -mentioned project, as per our
prior discussions.
The modifications and additions as listed on the attached contract will provide the necessary
revisions to the project to incorporate the additional ROW and easement exhibits, additional
coordination with the City, and design of an additional wastewater line.
We appreciate your help with this contract amendment, and thank you again for your business.
Sincerely,
NATHAN D. MAIER
CONSULTING ENGINEERS, INC.
BrianJ. LaFoy, P.E.
Executive Vice President
Attachment
Approved: City of Southlake
John Terrell
Mayor
EXHIBIT SA-4
Supplemental AL3,reement No. 4
FOR
WHITE CHAPEL BOULEVARD
FROM
E. NORTHWEST PARKWAY (S.H.114) TO E. HIGHLAND STREET
FOR
THE CITY OF SOUTHLAKE, TEXAS
This Supplemental Agreement No. 4 amends the original Scope of Services dated 10/14/08 to
include additional wastewater line design services, ROW and easement acquisition coordination
services, and additional easement exhibit preparation as previously submitted to The City of
Southlake (The City) by Nathan D. Maier Consulting Engineers, Inc. (NDM). The proposed
changes altering the original scope include:
I. Wastewater Design Services
NDM will prepare plan and profile sheets for approximately 1,250 LF of new 8 inch
wastewater gravity line extension. The proposed limits of the new line are from approximately
400 ft south of Highland Street to approximate Sta 61+50. The proposed alignment will be
under proposed pavement in the southbound lanes of White Chapel Blvd.
Analysis of the existing lift station and force main for adequate capacity is not included in this
scope of services.
II. ROW and Easement Acquisition Coordination Services
NDM will provide support services to the ROW and easement acquisition activities and will
include the following items:
■ Preparation of ROW/easement exhibits for one (1) public meeting.
■ Attendance of one (1) public meeting.
■ Revisions to previously prepared ROW and easement parcel exhibits to correspond to a
numbering format developed by the City. These revised documents will be signed and
sealed by the RPLS.
■ Coordination with the ROW and easement acquisition services provider.
III. ROW and Easement Exhibit Preparation
NDM will prepare twenty-one (21) additional ROW/easement parcel exhibits for the project.
These documents will include exhibits and descriptions, signed and sealed by an RPLS, for
each parcel.
Supplemental Agreement No. 4
For
White Chapel Boulevard
E. Northwest Parkway (S.H.114) to Highland Street
Engineering Fees
DESCRIPTION ENGINEERING
FEE
BASIC SERVICES
Roadway Design $129,639
TOTAL BASIC SERVICES $129,639
SPECIAL SERVICES
Survey Services
$35,170
Hydraulic / Hydrology Study and Analysis
$25,485
Waterline Replacement
$19,455
Permitting
$11,160
Construction Administration
$12,470
Geotechnical Investigation
$8,000
Reimbursable Expenses
$2,900
Unit Costs $20,580
12 - Right-of-way dedication
exhibits / Easement dedication
exhibits - $1,715 each
TOTAL SPECIAL SERVICES $135,220
SUPPLEMENTAL AGREEMENT NO. 1 $12,285
SUPPLEMENTAL AGREEMENT NO.2
BASIC SERVICES
Roadway Design
$79,735
SPECIAL SERVICES
Survey Services
$22,164
Drainage Design
$7,254
Utility Design
$4,654
Subsurface Utility Engineering
$39,450
Landscape and Irrigation Design
$12,500
Construction Administration
$2,640
Reimbursable Expenses
$2,000
Unit Costs ($1,715 per unit) $3,430
Additional ROW Dedication Exhibits
Additional Easement Dedication Exhibits
TOTAL FOR SUPPLEMENTAL NO.2 $173,827
TOTAL ENGINEERING
$450,971
SUPPLEMENTAL AGREEMENT NO. 3
BASIC SERVICES
Roadway Design
$7,415
SPECIAL SERVICES
Survey Services
Drainage Design
$530
Utility Design (Water Line Replacement)
$6,608
Subsurface Utility Engineering
Landscape and Irrigation Design
Construction Administration
Reimbursable Expenses
$225
Unit Costs ($1,715 per unit)
Additional ROW Dedication Exhibits
Additional Easement Dedication Exhibits
TOTAL FOR SUPPLEMENTAL NO.3 514,778
TOTAL ENGINEERING SO 749
SUPPLEMENTAL AGREEMENT NO.4
BASIC SERVICES
Roadway Design
SPECIAL SERVICES
ROW 1 Easement acquisition coordination
$5,115
Utility Design (8" wastewater gravity)
$12,086
Reimbursable Expenses
$100
Unit Costs ($1,715 per unit)
$36,015
Additional ROW Dedication Exhibits
Additional Easement Dedication Exhibits
TOTAL FOR SUPPLEMENTAL NO.4
$53,316
TOTAL ENGINEERING