HomeMy WebLinkAbout08 - Street Wastewater Pump Station RehabilitatinCITY OF NEWPORT BEACH
CITY COUNCIL STAFF REPORT
Agenda Item No. 8
May 9, 2006
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: Public Works Department
R.Gunther, P.E.
949 - 644 -3311 or rgunther @city.newport- beach.ca.us
SUBJECT: MARINERS, CHINA COVE AND 62ND STREET WASTEWATER PUMP
STATION REHABILITATION — COMPLETION AND ACCEPTANCE OF
CONTRACT NO. 3585
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 one (1) year afterr Council acceptance.
DISCUSSION:
On October 12, 2004, the City Council authorized the award of Mariners, China Cove
and 62nd Street Wastewater Pump Station Rehabilitation contract to GCI construction
Inc. The contract provided for the renovation of these three old pump stations.
At Mariners Drive pump station, the existing pump was replaced and a second pump
was installed. Station piping was replaced and a new bypass connection, new controls,
and a new portable generator connection were installed.
At the 50 -year old China Cove pump station, state -of- the -art controls were installed to
better alert the operations staff of any malfunction. Bypassing capabilities were added to
allow backup connections for either a portable emergency generator or portable bypass
pumps. Also, complete mechanical piping changes were made, a backup submersible
pump was installed in the wet well, and the adjacent street, Femleaf Avenue, was
rehabilitated in concert with the pump station improvements.
Mariners, China Cove and 62 n Street Wastewater Pump Station Rehabilitation
Completion And Acceptance of Contract No. 3585
May 9, 2006
Page 2
Improvements for the 62nd Street pump station in Newport Shores included the
installation of a wet well, controls, portable generator, and bypass pump connections.
Most of the piping throughout the station was replaced and two new pumps installed.
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: $1,582,170.00
Actual amount of bid items constructed: 1,595,844.00
Total amount of change orders: 117,452.00
Final contract cost: $1,713,296.00
The final overall construction cost including Change Orders was 8.3 percent over the
original bid amount. Nine Change Orders were issued for the project as follows.
• Change Order 1 represents a credit change order in the amount of $222,168
which reduced items from the scope of work based on value engineering of the
project to minimize costs.
• Change Order 2 for $22,061 provided for revised electrical fittings, coating
outside of the vaults, and a stainless steel Myers service pedestal.
• Change Order 3 for $30,903 provided for revised modifications to the existing
water main at 62nd Street and additional electrical work.
• Change Order 4 for $62,273 provided installation of Raven coating at four
structures, an additional sewer manhole and miscellaneous work.
• Change Order 5 for $25,799 provided for an ESSCO pump at Mariners pump
station and miscellaneous work.
• Change Order 6 for $34,956 provided pressure grouting by National Plant
Services, an additional water main, and asphalt replacement.
• Change Order 7 for $49,000 provided for storm drain construction and concrete
stricture modifications.
• Change Order 8 for $48,954 provided for concrete and asphalt removals and
replacement, additional landscaping and miscellaneous work.
• Change Order 9 for $65,674 provided additional coatings from National Plant
Services, added water main construction at A Street in concert with the OCSD A
Street Pump Station work, remodeled the Edison pedestal at China Cove, and
allowed for miscellaneous work.
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
and alteration of existing public facilities with negligible expansion of the facilities in
areas that are not environmentally sensitive.
Mariners. China Cove and 62"' Street Wastewater Pump Station Rehabilitation
Completion And Acceptance of Contract No. 3585
May 9, 2006
Page 3
Funding Availability:
Funds for the project were expended from the following accounts:
Account Description Account Number Amount
Sewer Pump Station Master Plan Imps. 7532- C5600100 $1,630,191.00
Street/Bikeway Improvements 7181- C5100302 $83,105.00
Total: $1,713,296.00
The original contract completion date was August 19, 2005. Due to the nine change
orders and the manufacturing and delivery time for the added pump, the project was
extended several months. In addition, several corrective: items involving the
performance of the pumps provided and subsequent repairs of the water proof coatings
were required prior to the City accepting the final work. Though actual construction
work was completed in December 2005, the project was deemed substantially complete
on March 31, 2006.
Prepared by:
aLtN'tep r
Gunther, P.4=-.
Construction Engineer
Submitted by:
yfl . Badum
Works Director