HomeMy WebLinkAbout05 - Mission Bay Drive Drainage Project - NOC for Contract No. 7889-1 (21R03)Q �EwPpRT
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<,FORN'P City Council Staff Report
April 13, 2021
Agenda Item No. 5
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: David A. Webb, Public Works Director - 949-644-3311,
dawebb@newportbeachca.gov
PREPARED BY: Patrick Arciniega, Senior Civil Engineer
parciniega@newportbeachca.gov
PHONE: 949-644-3347
TITLE: Mission Bay Drive Drainage Project — Notice of Completion for
Contract No. 7889-1 (21 R03)
ABSTRACT:
On October 13, 2020, the City Council awarded Contract No. 7889-1 for the Mission Bay
Drive Drainage Project to Bunker Construction, Inc. to capture groundwater that was
infiltrating the roadway base and consequently damaging the pavement of Mission Bay
Drive. The 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
Civil Code; and
c) Release Faithful Performance Bond one year after acceptance by the City Council.
DISCUSSION:
Overall Contract Cost/Time Summary
Awarded
Final Cost at
Contingency
Actual
% Due to
% Due to
Contract Amount
Completion
Allowance
Contract
Directed
Unforeseen
Change
Change
Change
$143,983.00
$156,231.67
10%
8.5%
1.4%
7.1%
Allowed Contract Time +
73
Actual Time
0
Approved Extensions (days) =
Under (-) or Over (+)
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Mission Bay Drive Drainage Project — Notice of Completion for
Contract No. 7889-1 (21 R03)
April 13, 2021
Page 2
This project installed underground drainage collection facilities that are now successfully
collecting and diverting groundwater, which had been infiltrating the roadway base and
damaging the public street and pavement. The street no longer has signs of water
bubbling through the pavement. The work necessary to complete this contract consisted
of setting up traffic control; excavating pipe trench; removing an abandoned irrigation
system; controlling groundwater; installing filter fabric, solid and perforated pipe subdrain,
and concrete bag cutoffs; backfilling pipe trench with native material over gravel;
connecting cleanouts to perforated pipe; connecting area drains, existing slope drains
and cleanouts to solid pipe; trimming or removing small interfering trees and landscaping;
and other incidental items to complete the work in place as required by the contract
documents.
The contracted work has now been completed to the satisfaction of the Public Works
Department. A summary of the construction cost is as follows:
Original Bid Amount:
Actual Cost of Bid Items Constructed:
Total Change Orders:
Final Contract Cost:
$143,983.00
$140,343.00
$15,888.67
$156,231.67
During construction, it was determined that more cleanouts, area drains, concrete cutoff
walls and burlap bags were needed than originally planned for. In addition, the connection
to the catch basin had to be rerouted from the side to the back of the basin. Also, an
unknown existing drain line had to be removed. Lastly, additional planting and grading
needed to be performed. These project adjustments resulted in contract change orders
totaling $15,888.67. With the completion of the project, the final contract cost is
approximately 8.5 percent above the original bid amount.
A summary of the project schedule is as follows:
Estimated Start of Construction per Annual Baseline Schedule November 18, 2020
Actual Start of Construction Per Notice to Proceed November 16, 2020
Extended Contract Completion Date Inclusive of Extra Work March 8, 2021
Actual Substantial Construction Completion Date December 14, 2020
The project was substantially complete on December 14, 2020 with all subdrain
improvements completed to the satisfaction of the Public Works Department. Additional
contract time was provided to address concerns raised by the Spyglass Hill Community
Association regarding the plants and grading.
Final pavement restoration work on Mission Bay Drive is proposed to occur in the fall of
2021, as part of a separate pavement repair project that is currently funded in the
FY 2021-22 Capital Improvement Program.
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Mission Bay Drive Drainage Project — Notice of Completion for
Contract No. 7889-1 (21 R03)
April 13, 2021
Page 3
FISCAL IMPACT:
Funds for the construction contract were expended from the following Capital
Improvement budget accounts:
Account Description
Contributions (21 R03)
General Fund (21 R03)
ENVIRONMENTAL REVIEW:
Account Number Amount
13501-980000-21 R03 $ 100,000.00
01201927-980000-21 R03 $ 56,231.67
Total: $ 156,231.67
On October 13, 2020, City Council found this project exempt from the California
Environmental Quality Act (CEQA) pursuant to Section 15304 (minor alternations in the
condition of land, water, and/or vegetation) of the CEQA Guidelines, because this project
has no potential to have a significant effect on the environment
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).
ATTACHMENT:
Attachment A — Location Map
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MISSION BAY DR DRAINAGE PROJECT CITY OF NEWPORT BEACH
PUBLIC WORKS DEPARTMENT
LOCATION MAP C-7889-1 4/13/21
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