City of Sacramento
City Council - 5PM Report
915 I Street Sacramento, CA 95814
www.cityofsacramento.org
File ID: 2023-01405 11/14/2023 Consent Item 37.
Change Order 2: Fairbairn Water Treatment Plant Laboratory Building Exterior Improvements (Z14140600)
File ID: 2023-01405
Location: 7501 College Town Drive, District 6, Represented by Vice Mayor Guerra Recommendation: Pass a Motion: 1) authorizing the City Manager or the City Manager’s designee to execute Change Order No. 2 to Contract No. 2022-1027 with DPR Construction, Inc. in the amount of $682,380 for a new not-to-exceed amount of $3,026,522; 2) ratifying Change Order No. 1; and 3) resetting the City Manager’s authority to issue change orders.
Contact: Mark C. Brown, Supervising Engineer, (916) 808-7118, [email protected]; James Christensen, Facilities Manager, (916) 808-5863, [email protected], Department of Public Works
Presenter: None
Attachments:
1-Description/Analysis
2-Change Order No. 2 DPR Construction, Inc.
Additional Description/Analysis
Issue Detail: The Fairbairn Water Treatment Plant Laboratory Building, located at 7501 College Town Drive, is one of two water treatment plant facilities where the City of Sacramento tests the safety and potability of the City’s drinking water. The building was constructed in the early 1990s and has served as a lab since that time. Over the years during rainfall events, water leaks in the walls have allowed some water to enter the building, causing stains on ceiling tiles, carpet, and other interior finishes. Because of this, city staff have been temporarily relocated while repairs were conducted. This has resulted in operational inefficiencies and an inconvenience to the occupants.
On September 20, 2022, the City Council awarded a construction contract to DPR Construction, Inc. (DPR) for $2,172,953, to repair the building. A Notice to Proceed with construction was issued to
File ID: 2023-01405 11/14/2023 Consent Item 37.
DPR on March 22, 2023.
After construction started, DPR commenced demolition of selected exterior sections of the building.
While performing the demolition, a significant amount of mold was discovered behind the walls. As more areas were uncovered, it was found that the mold was pervasive throughout the entire exterior and extended into the vapor barriers, outer sheathing, and in some areas into the internal drywall. As a result of this unforeseen condition, an entirely new exterior underlayment system was required to be designed to mitigate the mold issue. New sheathing, insulation, vapor barrier, and interior drywall were added to the building, creating a nearly new wall system. Because this issue was inside the wall, the extent of the damage was not found during the pre-design investigation phase and was only discovered during demolition.
Change Order No. 1 totaling $171,189 was executed to address part of the unforeseen site conditions. Change Order No. 2 further addresses the unforeseen conditions.
Policy Considerations: The recommendations in this report are in accordance with the provisions of City Code Section 3.60, which requires City Council approval of contracts and contract change orders of $250,000 or more.
Economic Impacts: None.
Environmental Considerations:
California Environmental Quality Act (CEQA): The action is exempt from review under the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines, Section 15301.
The action involves the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, or mechanical equipment, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination. The exemption covers interior or exterior alterations involving such things as interior partitions, plumbing, and electrical conveyances; and similar facilities; restoration or rehabilitation of deteriorated or damaged structures, facilities, or mechanical equipment to meet current standards of public health and safety, unless it is determined that the damage was substantial and resulted from an environmental hazard such as earthquake, landslide, or flood. The project qualifies for a Categorical Exemption under Article 19 of CEQA Guidelines Section 15301, existing facilities. No environmental review is necessary.
Sustainability: Under the General Plan, Climate Action Plan Policies and Programs, this qualifies under LU 2.6.5 Existing Structure Reuse. “City shall encourage the retention of existing structures and promote their adaptive reuse and renovation with green building technologies to retain the structures’ embodied energy, increase energy efficiency, make it more energy efficient, and limit the generation of waste. (RDR)”
File ID: 2023-01405 11/14/2023 Consent Item 37.
Commission/Committee Action: Not applicable.
Rationale for Recommendation: Ratifying Change Order No. 1 and approving Change Order No. 2 with DPR Construction Inc. for the Fairbairn Water Treatment Plant Laboratory Building Exterior Improvements Project is necessary to expedite the completion of repairs to this facility. These changes are required to complete the waterproofing for this critical infrastructure and protect it from potential water intrusion and the subsequent damage caused by water infiltration.
Financial Considerations: There is sufficient funding within the Department of Utilities (DOU) Facility Improvements and Rehabilitation Program (Z14140600) to execute Change Order No. 2 in the amount of $682,379 (Water Fund, Fund 6005) for the Fairbairn Water Treatment Plant Laboratory Building Exterior Improvements Project.
Local Business Enterprise (LBE): DPR Construction is an LBE.
Contract #: C2022-1027
City of Sacramento
CHANGE ORDER
DATE: 10/09/2023
Purchase Order#: SACTO-0000060355
TO: DPR Construction
Contract For: Fairbairn Water Treatment Plant Lab Exterior Improvements Budget#:214140615
Change Order#: 2
Upon mutual acceptance of this document the City of Sacramento, hereinafter referred to as "City"' and your firm, hereinafter referred to a "Contractor", in accordance with the terms and conditions of the original contract documents, you are hereby directed to make the following change or changes for the consideration set forth below:
Description: Change Order for PCO 003, 004, 006, 007 and 008 Additional Work: SEE ATTACHED EXHIBIT A
The original contract sum was
Net change by previous Change Orders
The contract sum prior to this Change Order was
The contract sum will be increased by this Change Order New contract sum including all Change Orders
$2,172,953.00
$ 171,189.00
$2,344,142.00
$ 682,379.40
$ 3,026,521.40
Contractor agrees that the amount of increase or decrease in the contract sum specified in this Change Order shall constitute full compensation for the work required by this Change Order, including but not limited to all compensation for the additional costs, if any, which may accrue to the Contractor by reason of any change in work schedules, other contract or cost of the project in any way made necessary by this Change Order. The time for performance of the contract will be extended by 77 working days to complete the project by reason of the performance of the work required by this Change Order. Except as herein above expressly provided, Contractor further agrees that the performance of the work specified in this Change Order or the rescheduling of the other project work made necessary by this Change Order, shall not constitute a delay which will extend the time limit for completion of the work as said term is used in the contract between the City and Contractor for the project.
Approval Recommended By:
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Mark C. Brown,
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Date: 2023.10.09 09:13:24 -07'00'
Project Manager Date
Approved By:
City Attorney
Rev 10/22/96
Approved By:
Matt Eierman
Director, Public Works
Approved By:
City Clerk
EXHIBIT A
Fairbairn Water Treatment Plant Lab Exterior Improvements 10/19/2023
DESCRIPTION AMOUNT
C2022-1027 - Change Order 002
All changes to the scope are noted below and described further in the corresponding Proposed Change Order (“PCO”).
PCO 003 Unforeseen Conditions
$6,928.40
This PCO compensates the Contractor for surface
refurbishing of the tube steel column and replacement
of the surrounding framing at the South Entrance as a
result of corrosion experienced due to water intrusion.
Additional work includes full demolition of stucco finish, sheathing, framing, and addition of concrete base per
Architectural Instruction CCD 002.
PCO 004 Client Initiated Change
$83,989.00
This PCO compensates the Contractor for City
request to remove and replace seven (7) additional
roof drains and corresponding rainwater leaders to
improve water removal from the roof surface and
eliminate any future water intrusion through the
parapet walls. This work also includes roofing in
another seven (7) existing roof drains do to poor
existing conditions. In addition, a sheet metal shroud was installed at the exterior wall exhaust fan.
PCO 006 Unforeseen Conditions
$100,261.00
This PCO compensates the Contractor for
replacement of drywall at the interior side of the roof parapet wall where mold was discovered. The drywall
was replaced with new prime DensGlass material at
the entire perimeter. New roofing and insulation were
installed at areas where drywall was removed.
PCO 007 Unforeseen Conditions
$161,477.00
Contract #: C2022-1027
CO #: 002
Exhibit A
This PCO compensates the Contractor for
replacement of all demolished stucco and sheathing
with new prime DensGlass, insulation, and moisture
barrier at all exterior building walls and canopies.
PCO 008 Unforeseen Conditions
$329,724.00
This PCO compensates the Contractor for full
remediation of mold throughout the interior and
exterior of the Lab Building. This includes full testing of affected areas, installation of new drywall and finish, installation of new epoxy countertops, and repainting
of all affected areas.
5 Items Total for Contract # C2022-1027 $682,379.40
Total by Reason Changed/Unforeseen Conditions $598,390.40 Client Initiated Changes $83,989.00