HomeMy WebLinkAbout10 - C-3505 - CdM Community Youth Center DrainageCITY OF NEWPORT BEACH
CITY COUNCIL STAFF REPORT
Agenda Item No. 10
March 25, 2003
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: Public Works Department
Stephen Luy, Associate Civil Engineer
949 - 644 -3311
sluy @city.newport- beach.ca.us
SUBJECT: CORONA DEL MAR COMMUNITY YOUTH CENTER DRAINAGE,
CONTRACT NO. 3505 — 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.
DISCUSSION:
On October 22, 2002, the City Council authorized the award of the Corona Del Mar
Community Youth Center Drainage Contract to Brongo Construction of San Juan
Capistrano, California.
The work in this project consisted of:
• Removal of sand
• Construction of a PCC slab with rubberized surface and artificial turf
• Installation of drain lines and inlets
• Installation of a PVC sub -drain system with drain inlets
• Restoration of turf
Previous studies by Consultants determined subsurface water and moisture buildup
caused warping of the floor in the Corona Del Mar Community Youth Center. The
solution involved the installation of a corrective drainage system to divert subsurface
SUBJECT: Corona del Mar Community Youth Center Drainage, Contract No. 3505 -Completion And Acceptance
March 25, 2003
Page 2
flow around the building and eliminate any sump conditions contributing to the buildup
of subsurface waters.
The improvement was accomplished by providing drainage in sump /sand pit areas,
reconstructing the sump area /play area with concrete and a rubberized surface, and
the construction of a sub -drain system around the Youth Center to facilitate the
drainage of subterranean waters. The Contractor also provided surveying services.
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: $64,650
Actual amount of bid items constructed: 66,690
Total amount of change orders: 4,655
Final contract cost: $71,345
The increase in the amount of actual bid items constructed over the original bid amount
resulted from the need for additional drains, subdrains and drain cleanouts exceeding
the bid item quantities. The final overall construction cost including change orders was
10.3 percent over the original bid amount.
Five change orders totaling $4,655 were written for this project.
1. Deletion of 1 -inch rubberized surface, creating a credit of $7,945.
2. Removal and reconstruction of an 8 -inch wide mow strip to a higher elevation
allowing the rubberized surface to be installed without the need for a step down
from adjacent concrete improvements. The change order also included the
relocation of existing 2 -inch irrigation main, relocation of existing irrigation wires
and additional salvage work to remove the existing playground equipment intact
for a total cost of $6,437.
3. Additional storm drain pipe, filter fabric, asphalt patchback and a rock rip rap
drain outlet for a cost of $2,763.
4. Hand excavation of an encroaching City owned gas line and time material work
for a total cost of $1,159.
5. Time extension for temporary fencing and a modification of deduct in Change
Order No.1 for an additional cost of $2,241.
Funds for the project were expended in the following account:
Description Account No.
CYC Drainage Remediation 7011- C4120672
All work was completed on March 10, 2003.
Amount
$71,345.00
SUBJECT: Corona del Mar Community Youth Center Drainage, Contract No. 3505 - Completion And Acceptance
March 25, 2003
Page 3
Environmental Review:
Categorically Exempt -under Chapter 3, Article 19, Section 15302, Class 2 of the Title
14 California Code of Regulations. Replacement or reconstruction of existing structures
or facilities on the same site having substantially the same purpose and capacity.
Prepare Y.
Stephen Luy
Associate Civil Engineer
Submitted by
tephe G. Badum
Public Works Director