Item 4EItem 4E
M E M O R A N D U M
(October 16, 2018)
To: Shana Yelverton, City Manager
From: Rob Cohen, Director of Public Works
Subject: Approve Change Order No. 2 with NG Painting, LP for the
installation of diffuser structures, floor repairs and painting for the
Pearson 5 MG Ground Storage Tank #1 and the T.W. King 5 MG
Ground Storage Tank in an amount not to exceed $90,000.
Action
Requested: Approve Change Order No. 2 with NG Painting, LP for the
installation of diffuser structures, floor repairs and painting for the
Pearson 5 MG Ground Storage Tank #1 and the T.W. King 5 MG
Ground Storage Tank in an amount not to exceed $90,000.
Background
Information: City Council awarded a construction contract with NG Painting, LP
to refurbish and repaint the Pearson Ground Storage Tank #2 back
in January of this year. During this project, as part of our annual
tank inspection and cleaning efforts, we discovered damage to the
floors of the Pearson 5 MG Ground Storage Tank #1 and the T.W.
King 5 MG Ground Storage Tank. One of the methods staff utilizes
to maintain the highest possible water quality is the deep cycling of
our tanks, resulting in the accelerated deterioration of the tank floor
directly beneath the intakes. In an effort to preserve the life of the
floor coating and materials within the Pearson Ground Storage
Tank #2, staff worked with our design consultant to develop a
diffuser to decrease the water velocity, preventing the premature
deterioration of the tank floors. This additional work was paid for
from the construction contingency included in the original
construction contract.
In addition, while NG Painting was on site, we elected to have the
roof hatch installed in Pearson Ground Storage Tank #2. This
hatch was necessary for the installation of the tank mixer while the
tank was out of service. Change Order No.1 was for the addition of
a diffuser and hatch to Pearson Ground Storage Tank #2 and roof
hatches for Pearson Ground Storage Tank #1 and the T.W. King
Ground Storage Tank. NG Painting will be returning when peak
water demand is less to install the hatches on the remaining two
ground storage tanks.
Item 4E
The original construction contract amount awarded to NG Painting,
LP was for $1,221,000 and Change Order No. 1 added $24,000 to
the contract to install the roof hatches at Pearson Ground Storage
Tank #1 and the T.W. King Ground Storage Tank which were
funded from the tank mixer CIP project.
Financial
Considerations: Funding for the improvements to the Pearson Tanks has been
allocated in the Utility Fund as part of the FY 2016 and FY 2018
Capital Improvement Program Budgets.
Strategic Link: The addition of diffusers, floor repairs and painting of these facilities
links to the City’s strategy map relative to the focus areas of Safety
and Security and Infrastructure. The specific corporate objectives
that are met by this construction project are to (C1) Achieve the
highest standards of safety & security and (F2) Invest to provide &
maintain high quality public assets.
Citizen Input/
Board Review: N/A
Legal Review: N/A
Alternatives: The City Council may approve or deny this change order.
Supporting
Documents: Executed Construction Contract
Change Order No. 2
Staff
Recommendation: Approve Change Order No. 2 with NG Painting, LP for the
installation of diffuser structures, floor repairs and painting for the
Pearson 5 MG Ground Storage Tank #1 and the T.W. King 5 MG
Ground Storage Tank in an amount not to exceed $90,000.
Staff Contact: Rob Cohen, Director of Public Works
Kyle D. Hogue, P.E., Deputy Director/City Engineer
Project:Refurbishing and Repainting of Pearson Ground Storage Tank #2
Owner:City of Southlake
Contract:Contract Date:
To:NG Painting, LP
Contractor
Nature of changes: Addition of diffusers to Pearson #1 and T.W. King
Item Qty Unit Unit Price Total
4. ADD
1 LS 41,000.00$ 41,000.00$
5. ADD
1 LS 41,000.00$ 41,000.00$
Total Change Order:82,000.00$
These changes result in the following adjustment of contract price and contract time:
Contract Price Prior to this Change Order
Net Increase Resulting from this Change Order
Current Contract Price Including this Change Order
The above changes are approved:
By:
Title:
Date:
City of Southlake
City
Mayor
Install inlet diffuser System at T.W. King Ground Storage
Tank including floor repair by surface preparation and
repainting of 20'X20' area
CHANGE ORDER No. 2
Date: October 16, 2018
$1,221,000.00
You are directed to make the changes noted below in the subject contract for the dollar amount stated below
including all labor, equipment, materials, overhead, and profit:
$1,245,000.00
$82,000.00
January 16, 2018
Install inlet diffuser System at Pearson Tank #1 including
floor repair by surface preparation and repainting of
20'X20' area
$1,327,000.00
Description
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Change Order No. 2
Contract Time Prior to this Change
Net Increase Resulting from this Change Order
Current Contract Time Including this Change Order
The above changes are recommended:
By:
Title:
Date:
City
By: By:
Title: City Engineer Title:
Date:Date:
Contractor
By:
Date:
Director of Public Works
(Days or Date)
City of Southlake
City
Project Manager
City of Southlake
City
City of Southlake
December 1, 2018
(Days)
30 calendar days
(Days or Date)
180 calendar days
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