HomeMy WebLinkAboutReso 30-10 I-580 Impvm Amend #3RESOLUTION NO. 30 - 10
A RESOLUTION OF THE CITY COUNCIL
OF THE CITY OF DUBLIN
APPROVING AMENDMENT #3 TO THE AGREEMENT WITH
S&C ENGINEERS, INC., TO PROVIDE
CONSTRUCTION MANAGEMENT SERVICES FOR THE
I-580/FALCON ROAD INTERCHANGE IMPROVEMENTS PROJECT
WHEREAS, the City of Dublin entered into an Agreement with S&C Engineers, Inc., on
August 1, 2006, to perform construction management services for the I-580/Fallon Road
Interchange Improvement Project; and
WHEREAS, S&C's scope of work is proposed to be
inspection, contra
initiated change c
and construction
requested by the
contract amount
work.
ct administration, testing and surveying work
expanded to include additional
in conjunction with several City
orders including work required by Caltrans due to change in field conditions
of the westbound auxiliary lane between Fallon Road and Tassajara Road
Alameda County Congestion Management Agency, and the not-to-exceed
s proposed to be increased $377,565.64 to cover the cost of the additional
NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Dublin does
hereby approve Amendment #3 to the Agreement with S&C Engineers, Inc.
BE IT FURTHER RESOLVED that the City Manager is authorized to execute the
Amendment to the Agreement, attached hereto as Exhibit A.
PASSED, APPROVED AND ADOPTED this 2nd day of March, 2010, by the following
vote
AYES: Councilmembers Biddle, Hart, Hildenbrand, Scholz, and Mayor Sbranti
NOES: None
ABSENT: None
ABSTAIN: None
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Mayor
ATT T:
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City Clerk
Reso No. 30-10, Adopted 3-2-10, Item 4.2 Page 1 of 1
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EXHIBIT "A" OF RESOLUTION -10
AMENDMENT TO AGREEMENT
BETWEEN CITY OF DUBLIN AND S&C ENGINEERS, INCORPORATED "
FOR CONSTRUCTION MANAGEMENT SERVICES
WHEREAS, the City of Dublin (hereinafter referred to as "CITY") and S&C
Engineers, Inc. (hereinafter referred to as "CONSULTANT"), entered into an agreement on
August 1, 2006, to perform construction management services for the I-580/Fallon Road
Interchange Improvement Project; and
WHEREAS, the Scope of Work is proposed to be expanded to include additional
inspection, contract administration, testing and surveying work in conjunction with several City
initiated change orders including work required by Caltrans due to change in field conditions
and construction of the westbound auxiliary lane between Fallon Road and Tassajara Road
requested by the Alameda County Congestion Management Agency, and the not-to-exceed
contract amount is proposed to be increased to cover the cost of the additional work;
NOW, THEREFORE, the parties hereto agree as follows:
Scope of Work
Scope of Work shall be modified to include additional scope of work as described in
Consultant's letter dated January 27, 2010 (attached).
Not-To-Exceed
The total cost for time-and-materials work under this amendment shall not exceed an
additional $377,565.64 based on the attached cost breakdown.
CITY OF DUBLIN
ATTEST:
City Clerk
Joni Pattillo, City Manager
Date: t"e .~ . I ~'-, 2 8 10
S&C ENGINEERS, INC. D /
James E. Scott, President
C:~Documents and SettingsUvlike ChanlDesktoplExhibit A -Amendment#3 March 2 2010.DOC
EXHIBIT
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'o~ 37
January 27, 2010
File No. 10405.020
Mr. Ferdinand Del Rosario
Senior Civil Engineer
City of Dublin
100 Civic Plaza
Dublin, CA 94568
n
S&G ENGINEERS, INC.
RE: Consulting Services Agreement -Construction Management Services
I-58O/Fallon Road Interchange Improvements Project
Request for Amendment #3
Dear Mr. Del Rosario:
S&C Engineers, Inc. is requesting an amendment to the agreement between the City of Dublin and
S&C Engineers, Inc. to provide Construction Management Services for the I-580/Fallon Road
Interchange Improvements Project.
Unanticipated Caltrans requirements and change orders added cost and time to the construction
contract. Additionally the Alameda County Congestion Management Agency (ACCMA) in
conjunction with the City initiated change orders to construct a westbound auxiliary lane between
Fallon Road and Tassajara Road and modify the alignment of the eastbound loop on-ramp. These
changes required additional inspection, contract administration, testing and surveying work from
S&C Engineers and our subconsultants. The change order work was in addition to the work
anticipated in the original construction contract and S&C Engineers' original scope of services.
S&C Engineers is requesting an amendment for $377,565.64 be approved by the City as
compensation for the additional services. A breakdown of the additional compensation by agency
is below.
Dublin $ 195,121.82
Pleasanton $ 31,950.22
ACCMA $ 150,493.60
Total $ 377,565.64
Please find attached a detailed summary of the additional work and breakdown of the cost for
inspection, contract administration, surveying and testing. If you have any questions regarding this
request, please contact me at (510) 272-2970.
Sincerely,
James E. Scott, P.E.
Project Manager
Enclosures
I i l BROADWAY ~ SUITE 300 OAKLAND, CALIFORNIA 94607 TEL 510.272.2970 FAX 510.272.2972
`~~37
Request for Amendment #3
I-580/Fallon Road Interchange Improvements Project
City of Dublin
Additional Scope of Work
Construction Management Costs
1. Wildlife Exclusion Fence
At the request of the City, S&C Engineers arranged for the installation of 51771ineaz feet
of 3 foot high wire backed silt fence to serve as a Wildlife Exclusion Fence on the north
side of the project. The fence was a conservation (mitigation) measure required by the
US Fish and Wildlife Service to minimize the effects of Construction on the California
tiger salamander, the red-legged frog and San Joaquin kit fox. The fence had to be
installed prior to an October 15th deadline in order to keep California tiger salamanders
and red-legged frogs from entering into the future construction area during the wet
season. Failing to meet the October 15th deadline could have delayed the start of
construction.
S&C Cost 21 640.00 Pleasanton: $3,371.51
Total Cost $21,640.00 Dublin: 18 268.49
Total Cost $21,640.00
2. Wage Escalation (Amendment #2)
The contract between the City and S&C Engineers, Inc. anticipated construction starting
in November of 2006 and end in 2007. Due to unforeseen circumstances involving
environmental permitting, the start of the construction was delayed until mid 2008 and
the completion of construction is projected to be at the end of 2009. On February 19,
2008, the City Council authorized an hourly rate adjustment for 2008 and beyond
(Amendment #2). The impact of the hourly rate adjustment for 2008 and beyond has not
yet been reflected with a commensurate adjustment in authorized compensation. S&C
Engineers has agreed to maintain 2008 rates throughout 2009 as requested by the City.
S&C Cost $46,392.66 Pleasanton: $8,745.37
Survey Cost $4,544.72 Dublin: 47 386.67
Testing Cost $5,194.66 Total Cost $56,132.04
Total Cost $56,132.04
~~~
3. Construction Change Order Impacts
3a. Removal of Twin 1200 mm CIP pipes on WB Auxiliary Lane (CCO # 'n and
Install 1050 mm Reinforced Concrete Pipe on WB Auxiliary lane (CCO # 9)
During excavation for the roadway structural section of the westbound auxiliary lane two
parallel 1200 mm cast-in-place (CIP) pipes were encountered. The 1200 mm CIP pipes
were as much as two feet up into the planned structural section of the auxiliary lane. The
Contractor was directed to pot hole some points to determine the location of the pipes so
the designer and Caltrans could accurately assess the conflict. After several meetings
with the designers and Caltrans, it was determined more detailed information was needed.
Excavation of the soil above the pipes was performed to expose the pipes for the entire
length where the pipes conflicted with the structural section. A 10 foot section of the
pipes was demolished to determine the wall thickness of the pipes and if the pipes had
any steel reinforcement. The information on the pipes was forwarded to Caltrans
Hydraulics Department who confirmed the unreinforced pipes were not strong enough to
sustain traffic loads. Caltrans required the twin 1200 mm pipes be removed. S&C
Engineers' Resident Engineer coordinated with the designer, the Caltrans Hydraulics
Department and the Caltrans Oversight Engineer to expedite a decision and implement
the change. Change order #7 was issued to the Contractor to remove the 1200 mm CIP
pipes and to backfill and compact the trench.
As described the existing double 1200 mm CIP concrete pipe and drainage inlets were
removed in the azeas where they conflicted with the new roadway structural section.
Under CCO #9 300 meters of new 1050 mm reinforced concrete pipe (RCP) was installed
outside the limits of the new roadway structural section and connected to an existing
drainage system. Steel reinforcing was placed around the RCP. The trench containing
the RCP and steel was backfilled with concrete. A 600mm wide section of Lean
Concrete Base (LCB) and concrete backfill located between the pipe and the existing
roadway was installed at the request of, and will be reimbursed by the Alameda County
Congestion Management Agency. The concrete backfill and LCB are for the anticipated
roadway construction of the future I-580 HOV/HOT Lane widening project. S&C
Engineers' Resident Engineer worked with the designer, the Caltrans Hydraulics
Department and the Caltrans Oversight Engineer to minimize the cost and schedule
impacts to the City's construction project and to expedite and implement a solution.
Construction Cost $338,872.81
S&C Cost $24,800.00 Pleasanton: $4,876.54
Survey Cost $4,500.00 Dublin: $25,423.46
Testing Cost 2 000.00 ACCMA: 1 000.00
Total Cost $31,300.00 Total Cost $31,300.00
to ~ 3`l
3b. Revise Fassework Traffic Opening (CCO's #32 & #36)
The Contractor's progress on the project was impacted by a revision to the bridge
falsework traffic opening requirements imposed by Caltrans. Shortly before the bridge
falsework over I-580 was to be erected, Caltrans raised concerns regarding the
configuration of the bridge falsework traffic opening, temporary K-rail and traffic
striping. The bridge falsework traffic opening was already constructed according to the
Caltrans approved construction staging plans. After six weeks of additional reviews and
several meetings, Caltrans finally approved an alternative configuration for the bridge
falsework traffic opening. During this six week period, the Contractor's work force was
kept on site because all parties believed the response from Caltrans was imminent. The
alternative bridge falsework opening configuration required completion of the pavement
structural section on the eastbound loop on-ramp, restriping of the freeway, and shifting
of temporary K-rail. (CCO #32) These changes took four weeks to plan, schedule,
implement and construct. A negotiated settlement with the Contractor included a total of
64 working days adjustment to contract time. S&C Engineers' Resident Engineer and
staff attended several meetings with the designer, the Caltrans design, Caltrans HQ
Geometrician, the Caltrans Oversight Engineer and Caltrans management to facilitate a
decision and implement the change. S&C Engineers staff also analyzed the Contractor's
change order Cost proposal which was originally valued at more than $700,000. Along
with City staff, S&C Engineers was able to negotiate the final value of the change order
settlement down to $398,822.00
Construction Cost $460,831.57
Contract Time Adjustment 64 working days
Pleasanton: $14,956.80
S&C Cost 96 000.00 Dublin: 81 043.20
Total Cost $96,000.00 Total Cost: $96,000.00
3c. Construct auxiliary lane, Fallon to Tassajara (CCO #39) & align EB loop on
ramp (FR71V>) to accommodate future Fallon to Airway Aux Lane. (CCO #39b)
Auxiliary Lane - CCO #39
In cooperation with the Alameda County Congestion Management Agency (ACCMA)
the City agreed to construct an auxiliary lane on westbound I-580 between the Fallon
Road Interchange and the Tassajara Road Interchange. Construction of the auxiliary lane
will help alleviate traffic congestion on westbound I-580 and decrease travel times for
Dublin residents who access westbound I-580 from Fallon Road and residents exiting
from westbound I-580 to Tassajara Road. The City will be reimbursed for 100% of the
cost of this change order from the Alameda County Congestion Management Agency.
This change order has been reviewed and approved by Caltrans.
Additional construction surveying is required to establish line and grade for the auxiliary
lane and additional testing must be performed on the structural section.
~~ ~r
Eastbound Loop On-Ramp - CCO #39B
The Alameda County Congestion Management Agency (ACCMA) requested the City
modify the existing EB loop on ramp to accommodate an upcoming auxiliary lane on
eastbound I-580 between the Fallon Road Interchange and the Airway Interchange.
These modifications should be incorporated into the City's project to avoid partially
removing the roadway constructed under the City's contract just a few months after it
was constructed. The City will be reimbursed 100% of the cost of this change order from
the Alameda County Congestion Management Agency. The change order plans have
been reviewed and approved by Caltrans.
Additional construction surveying will be needed to establish line and grade for the
auxiliary lane and additional testing will need to be performed on the structural section.
Construction Cost
S&C Cost
Survey Cost
Testing Cost
Total Cost
$1,500,000.00 estimated
$119,463.60
$17,430.00
12 600.00
$149,493.60
ACCMA Cost: $149,493.60
3d. Central Parkway Tie-in, Extra Work
North of the project at the Central Parkway intersection, the constructed but unopened
section of new Fallon Road must be tied into the previously opened section of new Fallon
Road prior to switching traffic on to the unopened section of Fallon Road. The change
order to perform this work will have to be scoped with the City and the developer's
Engineer and negotiated with the Contractor.
Construction surveying will be performed by the developer's Engineer to establish line
and grade for the auxiliary lane and additional testing will need to be performed on the
structural section.
Estimated Construction Cost .$ 200,000.00
S&C Cost $20,000.00 Dublin Cost: $23,000.00
Survey Cost $ 0.00
Testing Cost 3 000.00
Total Cost $23,000.00
8~ 37
Summary of Cost Increases due to Change Orders.
1. Wildlife Exclusion Fence $ 21,640.00
2. Wa a Escalation $ 56,132.04
3. Construction Chan a Order Im acts
3a. Removal of Twin 1200 mm CIP pipes on WB Auxiliary Lane
(CCO # 7) and Insta111050 mm Reinforced Concrete Pipe on
WB Auxilia lane CCO # 9 $ 31,300.00
3b. Revise Falsework Traffic O enin CCO's #32 & #36 $ 96,000.00
3c. Construct Auxiliary Lane, Fallon to Tassajara (CCO #39) &
align EB loop on ramp (FR7M) to accommodate future Fallon
to Airwa Auxilia Lane. CCO #39b $ 149,493.60
3d. Central Parkwa Tie-in $ 23,000.00
Total $ 377,565.64
Breakdown of Costs by Agency
Dublin $ 195,121.82
Pleasanton $ 31,950.22
ACCMA $ 150,493.60
Total $ 377,565.64
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