HomeMy WebLinkAboutItem 4.2 - 1181 Acceptance of ST1212
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STAFF REPORT
CITY COUNCIL
DATE: October 18, 2016
TO: Honorable Mayor and City Councilmembers
FROM:
Christopher L. Foss, City Manager
SUBJECT:
Acceptance of Work – Project No. ST1212, San Ramon Road Stormwater
Quality Treatment.
Prepared by: Michael Boitnott, Senior Civil Engineer
EXECUTIVE SUMMARY:
The City Council will consider accepting the San Ramon Road Stormwater Quality
Treatment from Silvergate Dr. to Shannon Ave. (CIP No. ST1212). The project included
the construction of a bioretention basin, DSRSD recycled water main, reconstruction of
the bicycle and pedestrian trail along San Ramon Rd. between Silvergate Dr . and
Shannon Ave., and modification to the existing storm drainage infrastructure to redirec t
storm water to the new basin.
STAFF RECOMMENDATION:
Staff recommends that the City Council adopt the Resolution Accepting Improvements
under Project No. ST1212 for the San Ramon Road Stormwater Quality Treatment .
FINANCIAL IMPACT:
None.
DESCRIPTION:
On September 1, 2015, the City Council awarded a contract to GradeTech Inc. in the
amount of $918,888.92 for the San Ramon Road Stormwater Quality Treatment Project
No. ST1212. The work included the installation of a new storm drain main and recycled
water main under the San Ramon Road bicycle and pedestrian path, between
Silvergate Drive and Shannon Avenue, and construction of a stormwater quality basin
within the street right-of-way on the northwest corner of San Ramon Road and
Silvergate Drive. The project also included landscaping and irrigation around the basin
and redirection of existing stormwater laterals to the new storm drain main to allow the
water flows to be treated in the bioretention basin.
Due to wet weather this past winter, construction duration was extended to
accommodate for unsuitable soil conditions that hampered construction of the
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improvements. Additionally, contract change orders were issued during construction to:
increase the number of subdrains in the bioretention basin; replace existing electrical
conduit for the pathway lights; add geotextile fabric to the new pathway pavement
section; and to remove sections of old roadway (presumed to be former Highway 21),
which were found during excavation of the bioretention basin.
Staff has determined that the project is complete, and recommends that the City Council
accept the project and begin the warranty period. There are a few minor invoices left to
for Staff to pay in order to close out the project, (approximately $7,500), after which any
unused funds will be returned to the Measure B Fund.
The project cost summary is as follows:
San Ramon Road Stormwater Quality Treatment
Total Project Budget $1,212,506
Funding Sources
DSRSD Reimbursement $140,246
Measure B Sales Tax: Bike and Ped. Fund $12,260
CalTrans Grant $1,060,000
Total Funding Sources $1,212,506
Actual Expenditures
Construction Contract $974,520
Contract Services, Design, Salary, & Testing $172,131
Total Expenditures $1,146,651
Remaining Balance $65,855
Funding for the project was provided by a $1,060,000 cooperative grant for construction
from Caltrans, Measure B Bike and Ped funds, and State Gas Tax. The project also
included installation of a DSRSD recycled water main, the costs of which were
reimbursed by DSRSD.
NOTICING REQUIREMENTS/PUBLIC OUTREACH:
None.
ATTACHMENTS:
1. Resolution Accepting Improvements Under Project No. ST1212, San Ramon Road
Stormwater Quality Treatment
RESOLUTION NO. - 16
A RESOLUTION OF THE CITY COUNCIL
OF THE CITY OF DUBLIN
* * * * * * * * *
ACCEPTING IMPROVEMENTS UNDER PROJECT NO. ST1212 FOR THE
SAN RAMON ROAD STORMWATER QUALITY TREATMENT
WHEREAS, on September 1, 2015, The City of Dublin entered a contract with
GradeTech Inc. to perform Project No. ST1212, San Ramon Road Stormwater Quality
Treatment; and,
WHEREAS, said improvements have been completed in accordance with plans and
specification, and any approved modifications thereof, to the s atisfaction of the City Engineer of
the City of Dublin; and
NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Dublin does
hereby accept the improvements, Project No. ST1212, San Ramon Road Stormwater Quality
Treatment and authorize Staff to file a Notice of Completion with Alameda County.
BE IT FURTHER RESOLVED that the City Council of the City of Dublin does hereby
authorize the City Manager or his designee to release the retention, if after 35 days of filing the
Notice of Completion there are no subcontractor claims.
PASSED, APPROVED AND ADOPTED this 18th day of October, 2016, by the following
vote:
AYES:
NOES:
ABSENT:
ABSTAIN:
________________________________________
Mayor
ATTEST:
_____________________________
City Clerk