HomeMy WebLinkAboutTrans 2014-11-24 Item 2D - Change Order #3 - Tukwila Urban Center - Transit Center and Andover Park West Widening with Puget Sound Energy (Utility Relocation Agreement)T{]:
City of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
Mayor Haggerton
Transportation Committee
FROM: Bob Giberson, Public Works Director
BY: Peter Lau, Senior Program Manager
DATE: November 21, 2014
SUBJECT: Tukwila Urban Center — Transit Center and Andover Park West Widening
Puget Sound Energy — Facility Relocation Agreement, Contract No. 13-121
Change Order No. 3
ISSUE
Approve Change Order No. 3 for the Utility Relocation Agreement between the City and Puget
Sound Energy (PSE).
BACKGROUND
On July 2, 2013^ a Facility Relocation Agreement was executed between PSE and the City. This
agreement defined the roles and financial responsibilities for the relocation of two underground
vaults and two above-ground switches related to the Transit Center and Andover Park West
Widening construction p ject. The two underground vaults straddled the right-of-way (ROW)
line along the Southcenter Mall frontage; therefore, relocation costs to move the vaults out of
the ROW are shared by PSE and Tukwila. The two switches are on Westfield Southcenter Mall
property and are 100% the financial responsibility of the City.
A cost estimate of $738,400.00 was included as part of this Facility Relocation Agreement. One
underground vault (V10) and the two switches were then relocated by PSE in 2013. Change
Order Nos. 1 and 2 were generated as a result of the extra work to relocate V10 and the two
switches respectively. The two Change Orders were approved by City Council on February 18,
2014 for $75.914.80, bringing the total City responsibility to $814,314.80.
DISCUSSION
PSE has completed relocating the final remaining underground vault (V12) at the west Transit
Center bus pull-out lane. The relocation cost has exceeded the original cost estimate due to the
following:
• The dewatering cost for vault relocation was significantly higher than the cost included in
the original cost estimate.
• PSE's wire crew had to reroute unknown service cables in vault V12. These unknown
service cables were not documented in PSE's own record drawing; and the cable
rerouting cost was not anticipated in the original cost estimate.
• PSE's work crew had to extend their vault relocation work from two weeks (as estimated)
to four weeks due to limited access space as the City's contractor was simultaneously
constructing the walls at the west Transit Center.
• Extended traffic control and unanticipated pedestrian safety measure costs for the
additional two weeks.
• PSE was required to replace an existing utility vault lid with a new anti-skid lid and some
PSE manhole lids were also readjusted from existing locations to meet ADA requirements.
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INFORMATIONAL MEMO
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• The PSE vault relocation work was adjacent to the southbound travel lanes, resulting in
the need for additional shoring and steel plates to prevent subgrade sloughing to the
adjacent travel lanes.
• The original cost estimate in the Facility Relocation Agreement was based on the vault
being located within a landscaped area. It was discovered during construction that the
vault was partially under the roadway, necessitating the installation of a traf iC bearing lid
at additional cost. The bus pull-out was extended to avoid having the vault located directly
under the curb and gutter. This re-design altered the grades for the vault, causing it to be
installed deeper than originally proposed. The installation costs were increased due to
additional subgrade excavation and other physical conflicts.
• The original cost estimate in the Facility Relocation Agreement was based on 2012 PSE
labor rates. The labor costs were increased since the actual work took place in 2014.
FISCAL IMPACT
The total amount of the cost increase to relocate Vault V12 was $147,451.00, in which PSE is
responsible for 19%O[$28'O15.O9 and the City iS responsible for 81%O[$11S,435.31.The
Transit Center P ject construction contingency of $905,626.00 will be used to pay for PSE
Change Order No. 3. As of today, nine change orders for $84,887.92 were executed for the
Transit Center P ject and there is a remaining $820,738.08 in construction contingency that is
adequate to pay for PSE Change Order No. 3.
RECOMMENDATION
Council is being asked to approve PSE Change Order No. 3 in the amount of $119,435.31 to
Contract No. 13-121 for the Tukwila Urban Center Transit Center Utility Rg|ooation, and
consider this item on the Consent Agenda at the December 1, 2014 Regular Meeting.
Attachment: Change Order No. 3
W:\ PW RS Projects \ Transh Center (90610402)\Construction14.100 - Contract Documents \ 020 'Special Project Agreements aPermits \ (005) - Franchise Utilrly Agreements \Info Memo or
PUGET SOUND ENERGY
To: City of Tukwila
Attn: Cyndy Knighton
Project: TUKWILA - Andover Park W P.I
Description of work:
CHANGE ORDER V12
Date: 9/2/2014
Project Number: 101080841
Project Manager: GRENNER
This change order is for the costs In excess of the original estimate provided in "Exhibit C" of the
relocation agreement between the City of Tukwila and Puget Sound Energy, These excess costs
associated with this portion of the work are detailed on the attached explainatlon of costs.
Item Amount
Comments
Materais 63 346
Construction $ 131 578
Engineering & Management 14 620
Right of Way
Overhead 37,718
Estimate Total $ 247,261
Actual
Materials 93,527
Construction $ 233,027
Engineering & Management s 22,748
Right of Way
Overhead 45,409
Actual Total $ 394,712
Change Order Total $ 147,451
Allocation of Change Order Total
Company 19%
Government Entity 81%
Chan .e Order Total
28,016
$ 119,435
47,451
Note: This change order will be effective only when signed by both parties:
Puget Sound 1ergy
Signed:
Title:
Date:
(Please sign and return one copy)
City of Tukwila
Signed:
Title:
Date:
3591 7-04 Puget Sound Energy PO Box 90868 Bellevue, WA 98009-0868
PUGET SOUND ENERGY
a subsidiary of PUGET ENERGY
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CHANGE ORDER V12
EXPLANATION OF COSTS
*ALL COSTS INCLUDE ENGINEERING /MANAGEMENT, EQUIPMENT, SALES TAX, AND OVERHEADS*
1) Dewatering of vaults.
Additional costs: $7,000
Original estimate did not include dewatering of vaults due to...
1. Unknown amount of water
2. Unknown schedule for work months (weather)
2) Traffic control and pedestrian safety.
Additional costs: $8,532 (11 crew days)
A) Original estimate addressed 2 weeks of work. Work was over a 4 week period.
B) City and PSE granted extra flaggers for pedestrian safety and increased foot traffic during
heavy periods.
3) Wire crew performing rerouting of unknown service cables out of existing vault V12 that were
undocumented and unreferenced on the original estimate.
Additional costs: $9,203 (one crew day)
Original estimate did not include the wire work to remove and relocate street light wire and
secondary service cables.
4) Additional time for civil crew caused by lack of access to our vault due to the City's contractor
performing their work in the immediate area (limiting our access to one side and doubling
time on site).
Additional costs: $33,186 (11 crew days)
A) Original estimate was an estimated 2 weeks of work. Actual work took 4 weeks.
B) Original estimate was based on the City and contractor removing the Firestone canopy to
allow for work to be done on the vault with complete access.
C) City's contractor removed canopy and immediately began work on the transit center site.
Limiting our access to the vault.
5) Additional work per the request of the City to aid in the construction of the transit center.
Additional costs: $15,613 (2 crew days)
A) Replace lid at J01 with new anti -skid lid
B) Adjust location of manhole covers to address the alignment with the City's curb and gutter
6) Shoring and steel plates
Additional costs: $12,160
A) Original estimate was an estimated 2 weeks of work. Actual work took 4.
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B) Due to the location of the vault additional shoring was required to avoid undermining the
road during wet weather.
7) Materials
Additional costs: $30,181
Original estimate was based off of the best information at the time. Actual materials used
differed.
8) Planned to actual differential
Additional costs: $31,576
Original estimate was based off of the best information at the time (Footages). Actuals
differed.
9) Labor rate increase
Original estimate was based off of 2012 labor rates. Actual work was based off of 2014
rates.
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