March/April 2024 - 96

* Vactor preclearance in and near city
streets was judged to be very
effective. Several undocumented
utilities, unidentifiable by geophysical
methods because of
subsurface conditions, were encountered;
finding them in advance
of costly and potentially criticalpath
sheet pile installations allowed
the design team to develop relocation
or other removal strategies. The
preclearance was so useful that the
conveyance contractor voluntarily
applied it though it was not required
for that contract.
Acknowledgments
The authors thankfully acknowledge
the dedication and immense collaboration
with King County, local
community stakeholders and our small
business partners in developing this
project on an accelerated schedule to
meet consent decree milestones. The
authors would also like to identify key
players in the geotechnical elements of
this project:
* Geotechnical design and construction
support, including seismic
site response analysis - CH2M HILL
(now Jacobs)
* Probabi l ist ic Seismic Hazard
Assessment - Shannon & Wilson
* Plant site general contractor -
Flatiron
*
IPS/EQ secant pi le and rigid
inclusion subcontractor - DBM
* Secant pile, rigid inclusion, and
erosion and sedimentation control
special inspections - King County.
Patricia Bennett, P.E., is a geotechnical
engineer at Jacobs with more than 7 years of
experience working on large design-build
transportation projects and vertical
development projects.
Karen Dawson, P.E., is a geotechnical
engineer at Jacobs with more than 30 years of
experience designing a variety of deep
foundation technologies and project types,
primarily in the Puget Sound area.
Tina Hastings, P.E., PMP, ENV SP, is a
principal project manager with Jacobs, where
she has held leadership roles in the delivery of
more than $2 billion in public infrastructure.
She has more than 20 years' experience in the
planning, design, construction, start up and
commissioning of wastewater pump stations,
pipelines and treatment facilities.
Ryan Dunne, E.I.T., is a field engineer and
deputy project manager. During his time at
Jacobs, he has done collection system modeling
and design, startup and commissioning of
wastewater treatment facilities.
IPS/EQ basin tremie pour
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Table of Contents for the Digital Edition of March/April 2024

TOC
March/April 2024 - Intro
March/April 2024 - 1
March/April 2024 - 2
March/April 2024 - TOC
March/April 2024 - 4
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