HomeMy WebLinkAbout05 - C-3468 University Drive Zone III Water MainJuly 9, 2002
CITY COUNCIL AGENDA
ITEM NO. 5
TO: Mayor and Members of the City Council
FROM: Public Works Department
SUBJECT: UNIVERSITY DRIVE ZONE III 16 -INCH WATER MAIN IMPROVEMENT
PROJECT, CONTRACT NO 3468 — COMPLETION AND ACCEPTANCE
RECOMMENDATIONS:
1. Accept the work.
2. Authorize the City Clerk to file a Notice of Completion.
3. Authorize the City Clerk to release the Labor and Materials bond 35 days after the Notice of
Completion has been recorded in accordance with applicable portions of the Civil Code.
4. Release the Faithful Performance Bond 1 year after Council acceptance.
5. Authorize the Public Works Director to approve Change Order No. 4 in the amount of
$9,958.40 and authorize the encumbrance of an additional $9,958.40 to Brongo
Construction from Account No. 7501- C5500386.
DISCUSSION
On February 12, 2002, the City Council authorized the award of the University Drive Zone III
16 -Inch Water Main Improvement Project to Brongo Construction of San Juan Capistrano,
California. The contract provided for the replacement of a leaky ductile iron pipe with 660 feet
of new 16 -inch PVC water transmission main in University Drive along Bonita Creek Park east
of Jamboree. During construction, excessive groundwater and groundwater flow was
encountered that was not anticipated based on the soils boring at the site. City staff and the
contractor developed a revised work plan to resolve the unworkable condition which included
additional pumping, removal of uncompactible materials, import of aggregate backfill and
installation of a perforated sub - drain.
Four change orders were issued to successfully implement this revised work. The contract has
now been completed to the satisfaction of the Public Works Department. A summary of the
contract cost is as follows:
Original bid amount: $116,650.00
Actual amount of bid items constructed: 117,070.00
Total amount of change orders: 37,223.40
Final contract cost: $154,293.40
The final overall construction cost including change orders was 32.61 percent over the original
bid amount.
SUBJECT: University Drive Zone III 16 -Inch Water Main Improvement Project, Contract No. 3468 - Completion And Acceptance
Date: July 9, 2002
Page 2
A total of four change orders totaling $37,223.40 were issued to complete the project. They
were as follows:
A change order in the amount of $3,000.00 provided for the installation of a perforated
drain line.
2. A change order in the amount of $3,678.00 provided for groundwater pumping and
additional excavation at the existing vault.
A change order in the amount of $20,587.00 provided for the overexcavation of
unsuitable materials and the import of aggregate backfill material.
4. A change order in the amount of $9,958.40 provided for the excavation, cap, pumping
and slurry fill of an abandoned section of watermain and blowoff valve.
Construction costs for this project have exceeded the 125% threshold of the original contract and
Change Order No. 4 requires Council approval for the additional expenditure pursuant to the
Council Policy Manual. Staff is recommending the approval of this change order and is also
requesting authorization to encumber additional funds from Account No. 7501- C5500386 to
accommodate Change Order No. 4.
Funds for the project were expended from the following account:
Description Account No. Amount
Water Transmission Main Replacement 7501- C5500386 $154,293.40
The original scheduled completion date was May 10, 2002. Due to the change order work, the
completion date was extended to May 31, 2002. All work was completed by the revised
completion date.
Respectfully submitted,
PUBLIC WORKS DEPARTMENT
Stephen G. Badum, Director
By: R- E,cu 7/1J 1L--'
R. Gunther, P.E.
Construction Engineer
Attachment: Change Order No. 4
CITY OF NEWPORT BEACH
CONTRACT CHANGE ORDER e7
C'9C /FO0.NP
CONTRACT NO. 3468
PROJECT TITLE: University Drive Zone III 16 -Inch Water CHANGE ORDER: 4
CONTRACTOR: Brongo Construction PAGE: 1 OF 1
ENCUMBRANCE NO.: CCO SUMMARY COST: 37,223.40
ORIGINAL CONTRACT: $116,350.00 CCO TOTAL IN % 31.99%
COMPLETION DATE:
CHANGE REQUESTED BY: City CO. TYPE: LUMP SUM
DESCRIPTION: Excavate, pump, cap and slurry fill old 20 -in WM and blowoff
The following changes are hereby incorporated into the project plans and specifications:
INCREASE DECREASE
Excavate, pump, cap and slurry fill old 20 -in WM and blowoff 9,958.40
5/2 -5/9
Work tickets - 2941 -42; 2944 -46
CHANGE IN CONTRACT TIME 2- CALENDAR DAYS NET CHANGE $ 9,958.40
We, the undersigned contractor, have given careful consideration to the change proposed and hereby agree, if this
is approved, that we will provide all equipment, furnish all material, except as may otherwise be noted above, and
perform all services necessary for the above specified work, including field and home office expense and will accept
as full payment therefor the prices shown above.
ACCEPTED, DATE:
BY:
APPROVAL
APPROVED:
CONTRACTOR.
TITLE:
CONSTRUCTION ENGINEER
PUBLIC WORKS DIRECTOR
DATE:
DATE: