HomeMy WebLinkAbout05 - 16th Street Pump Station & Dolphin and Tamura Wells ImprovementsCITY OF
F NEWPORT REACH
City Council Staff Report
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November 12, 2014
Agenda Item No. 5
HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
David A. Webb, Public Works Director- (949) 644 -3330,
dawebb @newportbeachca.gov
Michael Sinacori, P.E., Assistant City Engineer
(949) 644 -3342
16th Street Pump Station and Dolphin and Tamura Water Wells Improvements —
Notice of Completion and Acceptance of Contract No. 5196 (CAP12 -0003)
On May 28, 2013, City Council awarded Contract No. 5196, 16th Street Pump Station and Dolphin and
Tamura Water Well Improvements to SCW Contracting Corporation for a total contract cost of $773,410
plus $77,000 allowance for contingencies. The required work is now complete and staff requests City
Council acceptance and close out of the contract.
RECOMMENDATION:
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 the Civil Code; and
c) Release the Faithful Performance Bond one year after acceptance by the City Council.
FUNDING REQUIREMENTS:
Funds for this project were expended from the following accounts:
Account Description
Water Enterprise — Pump Station and
Well Site Improvements
Contributions — Pump Station and Well
Site Improvements
Account Number Amount
$ 602,422.63
7523- C6002013
7251- C6002013 $ 231,978.58
Total $ 834,401.21
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This project included a budgeted contribution from the Southern California Edison Company (SCE) for an
energy conservation rebate estimated to be $253,786.00. During the course of the project, only
$152,531.68 in eligible reimbursement was tracked to actually be realized from SCE. After appropriate
audits of the work were completed, another $79,446.90 was authorized bringing the total SCE rebate
amount to $231,918.58, only $21,807.42 less than what was estimated originally. City staff appreciates the
cooperation received from SCE for this energy conservation program and associated rebates.
DISCUSSION:
Overall Contract Cost /Time Summary
Actual
Awarded Contract Final Cost at Contingency % Due to % Due to
Amount Completion Allowance Contract Directed Unforeseen
Change Change
$773,410.00 $834,401.21 10% or less 7.9% 1 +5.5% 2.4%
Actual Time
Allowed Contract Time (days) 174 0
Under ( -) or Over ( +)
The City's groundwater delivery system conveys groundwater pumped from four (4) existing wells in
Fountain Valley to the 16th Street Reservoir. The 16th Street Pump Station pumps water from the three (3)
million gallon 16th Street Reservoir into the water distribution system to meet demands and to Big Canyon
Reservoir (BCR) for further storage. The City, in cooperation with SCE, performed an energy audit of its
water wells and 16th Street pump station in 2012 and found that significant energy savings could be
realized if pump motor and drive shaft improvements were done at both the wells and the 16th Street
Pump Station.
The project included the following:
A. 16th Street Pump Station:
Improved the pump station's overall energy efficiency by replacing the solid state soft start motor
controllers of the two (2) pumps with variable frequency drives (VFDs). Eliminated throttling of the
pump control valves (PCVs) thus saving electricity and reducing electric utility costs.
Installed two new vertical turbine pumps at a lower horsepower but at a faster revolution per minute
to improve efficiency.
B. Dolphin and Tamura Water:
Replaced each well site's solid state soft start motor controllers (two at each site) with VFDs.
Eliminated throttling of the pump control valves, thus saving electricity and reducing the City's
electric utility costs.
The contract was completed to the satisfaction of the Public Works Department. A summary of the
contract cost is as follows:
Original bid amount:
$773,410.00
Actual cost of bid items constructed:
$773,410.00
Total change orders:
$60,991.21
Final contract cost:
$834,401.21
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The actual cost of bid items constructed was 7.9 percent above the original contract amount
due mostly to added program logic controller (PLC) upgrades at both the well sites and 16th
Street pump station.
A summary of the project schedule is as follows:
Estimated Completion Date per 2014 Baseline Schedule November 29, 2014
Project Awarded for Construction May 28, 2013
Contract Completion Date with Approved Extensions February 13, 2014
Actual Substantial Construction Completion Date February 13, 2014
The delivery of the new 16th Street Pump Station pumps and motors were substantially
delayed due to justifiable weather and manufacturing issues and time extensions were
granted. The main project components were installed within the contract allowed 174 working
days and were operational in February. However, the final programming PLC and the final
configuration of the VFDs at the 16th Street Pump Station to optimize energy efficiency was
delayed at the City's request to allow the station to stay in operation through the end of the
water year (June 30th). Pumping through the end of the water year allowed the City to
maximize its draw on the groundwater basin supply and thus save approximately
$250,000.00 in water costs. The programming work was completed in July and the project
was ready for acceptance at that time. Unfortunately, the two new motors began to show
unforeseen wear and were taken out of service for repair. It was found that different bearings
on the motors were necessary to function properly with the new VFDs. Those motor
modifications have been made (at no cost to the City) and both were back in operation this
past month.
ENVIRONMENTAL REVIEW:
At the time of award, this project was deemed exempt from the California Environmental
Quality Act ( "CEQA ") pursuant to Section 15302 Class 2 (c) 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 as the project is a replacement of existing utility systems
involving no expansion of capacity.
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).
ATTACHMENTS:
Description
Attachment A — Location Map
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ATTACHM ENT A
16TH STREET PUMP STATION
DOLPHIN & TAMURA WATER WELL
LOCATION MAP
CITY OF NEWPORT BEACH
PUBLIC WORKS DEPARTMENT
C -5196 I 11/12114
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