HomeMy WebLinkAbout05 - Water Transmission Main Valve Replacement Phase 2 (Project No. 18W12) - NOC for Contract No. 7539-3Q �EwPpRT
CITY OF
s NEWPORT BEACH
`q44:09 City Council Staff Report
May 28, 2024
Agenda Item No. 5
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: David A. Webb, Public Works Director - 949-644-3311,
dawebb@newportbeachca.gov
PREPARED BY: Michael J. Sinacori, Assistant City Engineer - 949-644-3342
msinacori@newportbeachca.gov
TITLE: Water Transmission Main Valve Replacement Phase 2 (Project
No. 18W 12) — Notice of Completion for Contract No. 7539-3
ABSTRACT:
On November 10, 2020, the City Council awarded Contract No. 7539-3 for the Water
Transmission Main Valve Replacement Phase 2 project to Paulus Engineering, Inc. of
Anaheim. The project replaced older, deteriorated, large diameter valves throughout the
city as identified in the Water Master Plan. The work is now complete and staff requests
City Council acceptance and close out of the contract.
RECOMMENDATIONS:
a) Accept the completed work and authorize the City Clerk to file a Notice of Completion
for the project;
b) Authorize the City Clerk to release the Labor and Materials Bond 65 days after the
Notice of Completion has been recorded in accordance with applicable portions of
Civil Code; and
c) Release Faithful Performance Bond one year after acceptance by the City Council.
DISCUSSION:
Overall Contract Cost/Time Summary
Awarded Contract
Final Total Contract
Total Contract
Percent Contract
Amount
Amount
Change Amount
Cost Change
$2,797,771.00
$3,547,054.00
$749,283.00
26.8%
Allowed Contract Time + Approved
304
Actual Time Used (Days)
304
Extensions (Days) _
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Water Transmission Main Valve Replacement Phase 2 (Project No. 18W12) —
Notice of Completion for Contract No. 7539-3
May 28, 2024
Page 2
This Water Transmission Main Valve Replacement project replaced large diameter valves
identified in the Water Master Plan. These were older deteriorated valves located on large
diameter transmission mains (12-inch, 16-inch, 18-inch, 24-inch, 30-inch, 36-inch and
48-inch) that were installed in the 1960s and used to isolate sections of the water system
for maintenance and operations. This project replaced 22 valves located at various
locations throughout the city, but primarily along Jamboree Road, in Newport Center and
Corona del Mar, at Big Canyon Reservoir, and at the 16t" Street Utilities Yard (Attachment
A).
The contract specifically provided for the removal and disposal of existing 12-inch,
16-inch, 18-inch, 24-inch, 30-inch, 36-inch and 48-inch water transmission main and
valves; demolition and disposal of existing valve vaults; construction of 12-inch, 16-inch,
18-inch, 24-inch, 30-inch, 36-inch and 48-inch CML&C transmission main pipe and direct
buried valves; fittings and connections to the existing water system; pavement restoration;
traffic control; and other appurtenant work as required by the contract.
The project proved to be challenging for the water system improvements located at the
Jamboree Road and Coast Highway intersection and Big Canyon Reservoir. Issues
included additional work needed due to extra thick pavement removals (up to five feet
thick) and cement slurry located at the Jamboree Road and Coast Highway intersection,
relocation of interfering utilities, and additional necessary dewatering. At the Big Canyon
Reservoir, the Zone III pump station valve replacement required additional excavation,
shoring, concrete removals, removal and replacement of existing electrical wiring for
pumps, and the replacement of deteriorated 12-inch and 24-inch water mains that were
found in poor condition during construction.
Also, during construction an 18-inch and 6-inch valve were found not functional at Coast
Highway and Hazel Drive that needed to be replaced prior to paving the highway. The
planned project work (17 valves) and eight change orders had expensed $2,547,295.87,
or approximately 91 % of the awarded construction cost in 2022. This required a budget
amendment that City Council approved on July 26, 2022, increasing project contingency
from $280,000 to $700,00 (or 25 percent above base) to fund completion of the five
remaining valves planned within this project.
The five remaining valve replacement locations were not as troublesome, but there were
issues at the 16t" Street Utilities Yard valve vault that required replacement of an existing
36-inch steel spool with 3-inch nozzle and additional costs related to electrical panel work
at the Big Canyon Reservoir. The final 1.8 percent increase required to complete the work
was approved through the City Manager's authority.
The contracted work has now been completed to the satisfaction of the Public Works
Department. A summary of the construction cost is as follows:
Original bid amount: $2,797,771.00
Actual Cost of Bid Items Constructed: $2,797,771.00
Total Change Orders: $749,283.00
Final Contract Cost: $3,547,054.00
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Water Transmission Main Valve Replacement Phase 2 (Project No. 18W12) —
Notice of Completion for Contract No. 7539-3
May 28, 2024
Page 3
Thirteen change orders totaling $749,283.00 in increased contract cost were approved
as part of the project. The change orders addressed costs for the abovementioned work
including costs for material price increases due to the COVID-19 pandemic, irrigation
service line replacement, valve and piping modifications for the pressure regulating
station located at Basswood Street, overtime costs, air/vac installation, additional
potholing, water main connections, and concrete replacements.
A summary of the project schedule is as follows:
Estimated Start of Construction per Annual Baseline Schedule August 23, 2021
Actual Start of Construction Per Notice to Proceed December 7, 2021
Extended Contract Completion Date Inclusive of Extra Work April 5, 2024
Actual Substantial Construction Completion Date April 5, 2024
Issues with the availability of materials due to the COVID-19 pandemic delayed the start
of the project and additional work (as discussed above) primarily at the Jamboree Road
and Coast Highway intersection and at the Big Canyon Reservoir extended the contract
completion date to April 5, 2024. In addition, work was suspended for 11 months due to
planned water system maintenance by the Metropolitan Water District of Southern
California, requiring shut-off of a critical water supply feed to the City of Newport Beach's
water system, which restricted completion of the City valve replacement efforts. Lastly,
valve replacement work located at the Back Bay Landing was deleted from the project
and will be repackaged and bid with the future 24-inch water transmission main bay
crossing project.
FISCAL IMPACT:
Funds for this construction contract, including change orders, were expended from the
following accounts within the Water Utility Enterprise Fund:
Account Description Account Number Amount
Water Capital Distribution & Piping 70201931-980000-18W12 $3,547,054
ENVIRONMENTAL REVIEW:
On November 10, 2020, the City Council found this project exempt from the California
Environmental Quality Act (CEQA) pursuant to Class 2 Section 15302 (c) (replacement
of existing public facilities involving negligible or no expansion of capacity) of the CEQA
Guidelines, California Code of Regulations, Title 14, Chapter 3, because it has no
potential to have a significant effect on the environment.
NOTICING:
The agenda item has been noticed according to the Brown Act (72 hours in advance of
the meeting at which the City Council considers the item).
ATTACHMENT:
Attachment A — Location Map
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