HomeMy WebLinkAbout05 - 44th Street Tide Valve ReplacementCITY OF NEWPORT BEACH
CITY COUNCIL STAFF REPORT
Agenda Item No. 5
January 10, 2006
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: Public Works Department
R.Gunther, P.E.
949 - 644 -3311
rgunther@city.newport-beach.ca.us
SUBJECT: 441H STREET TIDE VALVE REPLACEMENT — COMPLETION AND
ACCEPTANCE OF CONTRACT NO. 3717
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. Approve the appropriation of $58,000 to the Tidal Valve Replacement Program
(Account No. 7231- C3170722) from Tidelands unappropriated surplus fund
balance.
DISCUSSION:
On December 14, 2004, the City Council authorized the award of the 40' Street Tide
Valve Replacement contract to GCI Construction, Inc. The contract provided the
installation of a new automatic sluice gate, electric operator, and operator switch after
removal of the interfering portions of an existing storm drain structure and its sluice
gate.
Unfortunately, after multiple installations of the new tide valve, it was discovered that the
old 30 -inch corrugated metal inlet/outlet pipe buried beneath the sand and seawall was
leaking, thereby negating any positive closure effect of the newly installed tide valve. The
situation created the need for an emergency replacement of this inlet pipe, which was a
substantial undertaking, and added time and costs to the project. Since the rainy season
44' Street Tide Valve Replacement - Completion And Acceptance of Contract No. 3667
January 10, 2006
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was already underway and some flooding had occurred, this inlet pipe was repaired as
an emergency item of additional work and scope to the project. The system is now
water tight and serves to greatly reduce the potential of street or residential flooding in
the area.
The final product is much improved over the original plan and provides protection against
flooding in this area along Balboa Boulevard and to adjacent residences during tidal and
storm events.
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: $61,400.00
Actual amount of bid items constructed: 61,400.00
Total amount of change orders: 62,957.38
Final contract cost: $124,357.38
The final overall construction cost including Change Orders was 102.5 percent over the
original bid amount.
During the course of the project the City Manager gave his written authorization to
exceed the original contract by over 10 percent per the City Council Policy F -3.
However, additional costs were incurred at the end of the project that increased the
final cost to over 25 percent of the original contract. Staff now requests the approval of
City Council to make the additional expenditure, also as required by Council Policy F -3.
Three Change Orders in the amount of $62,957.38 were issued for the project. They
were as follows:
1. Change Order 1 in the amount of $10,373.00 provided for the upgrade of the
access door and for the installation of a double access door.
2. Change Order 2 in the amount of $5,645.00 provided for the necessary
modifications to the concrete inlet box structure including a raised top elevation.
3. Change Order 3 in the amount of $46,939.38 provided for removal of the
deteriorated 30 -inch CMP inlet pipe and for the shoring, dewatering and
installation of a new 30 -inch PVC inlet pipe through the seawall and into the
concrete inlet box structure.
Environmental Review:
The project was determined to be exempt from the California Environmental Quality Act
(CEQA) pursuant to Section 15302 of the CEQA Implementing Guidelines at the time
the project was authorized by the City Council. This exemption covers the maintenance
44'" Street Tide Valve Replacement - Completion And Acceptance of Contract No. 3667
January 10, 2006
Page 3
and alteration of existing public facilities with negligible expansion of the facilities in
areas that are not environmentally sensitive.
Funding Availability:
Upon approval of the recommended Budget Amendment, sufficient funds will be
available in the following account for the project. In addition, several projects in the
Tidelands may realize cost savings at the end of the fiscal year which would off -set the
increase of this project.
Account Description
Tidelands - Capital
Account Number
7231- C3170722
Amount
$124,357.38
The original contract completion date was June 22, 2005. Due to change order work,
particularly the need to replace the inlet pipe to the tide valve, the contract was
extended to December 2, 2005. All work was completed by the revised completion
date.
Prepared by:
R - 0. `�
R. Gunther, P.E.
Construction Engineer
Subm
Stephen G. Badum
Public Works Director