
COMMISSION AGENDA
Tay Yoshitani, Chief Executive Officer
February 4, 2011
Page 2 of 4
disposal in an effort to mitigate further costs and in keeping with the Port’s commitment to
sustainability of resources.
BACKGROUND:
This project is renovating and improving roadways in the vicinity of the new CRCF including
SR-518, International Boulevard (SR-99), S. 160
th
Street, Host Road and the NAE as traffic
mitigation for the CRCF. The WSDOT areas of work include:
Installation of a new ramp at the NAE including retaining walls, ramp access, traffic
signals and metering near the intersections of Host Road and S. 160
th
Street
SR-99 bridge seismic improvements and roadway widening including asphalt, curbs,
gutters including some underground utility work
Realignment of the SR-518 Exit to SR-99/International Boulevard (B-Line Work)
The installation of the new NAE ramp is nearly complete. The SR-99 bridge seismic upgrade
work is currently underway for widening the roadway along International Boulevard (SR-99) at
the exit off of SR-518. To date, footing excavations associated with seismic work uncovered
533 tons of unsuitable soils. Another 1,230 tons is anticipated for the remaining bridge
seismic/expansion work currently underway. In addition, preliminary clearing activities at the
south side of the SR-518 Exit Realignment (B-Line) work indicate that the 9,000 tons of soil to
be removed and disposed of are contaminated. Further, indications are that the 5,250 tons of
removal and disposal at the north side of the B-line work may be contaminated. At this time,
winter weather conditions prevent fully testing the area to determine the extent of contamination.
Since a gas station once operated in the area, the project team is moving ahead with an
assumption of 100% contamination.
The project was bid with an allowance of $150,000.00 under Unit Bid item #44 - Unsuitable
Soils- Washington State Department of Transportation (WSDOT) property for removing and
disposing of contaminated soils anticipated at the SR-518 exit realignment (B-line). To date,
excavation work associated with the other WSDOT property has expended 73% of Unit Bid Item
#44. A change order is required to allow the contractor to properly dispose of the additional
contaminated soils discovered by the Contractor in performing preliminary site work on the
project. Because the final magnitude of the change will not be known until all of the excavation
is completed, this change order will be issued for a Not-to-Exceed amount of $970,000.00 which
covers work associated with SR-99 Bridge Seismic Upgrade and road widening and the SR-518
exit realignment (B-Line) work.
This change order will allow the project schedule to proceed with excavation activities underway
now and the next large operation (SR-518 realignment) to begin in April 2011. Given the
magnitude of the estimated cost to properly dispose of the additional contaminated or unsuitable
soils, funding will exceed the current project contingency. This requires the transfer of sufficient