ITEM NO: ______7b_Supp_______ 
DATE OF MEETING: August 20, 2013

Lora Lake Apartments Cleanup 
August 20, 2013

History 
Lora Lake Apartments were acquired as part of
third runway property acquisition. 
Past site uses causing contamination include: 
-Burien Auto Wrecking from the mid 1950s
to mid 1980s. 
-Novak Barrel Washing.

Site Cleanup Status 
Remedial Investigation and Feasibility Study
completed January 2013 
Cleanup Action Planning (CAP) work with
Ecology completed- with provisions for
additional cleanup if needed for development 
Cleanup Action Plan going to public comment for
final decision by Ecology 
Commission Action required before CAP goes to
public comment- back on September 24th

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Cleanup Actions 
Apartments  Removal of 19,000 cubic yards of
dioxin contaminated soil and capping of 3.8
acres of remaining soil. Port option for additional
cleanup to prepare site for development.
Lake Parcel  Capping of contaminated
sediments, and restoration of Lora Lake to a
wetland.

Clean up Action Areas

Lora Lake Apartments Cleanup 
Upcoming Milestones 
Request Commission Authorization for the CEO to Sign the Consent
Decree - September 24, 2013 
Public Comment Period  October or November 2013 
Draft RI/FS Report 
Draft Cleanup Action Plan 
Consent Decree or Agreed Order 
Design Apartment and Lake Cleanup  2014-2015 
Complete Cleanup at Apartments  Summer of 2016 
Complete Cleanup at Lake  Summer 2017

Lora Lake Apartments Cleanup 
Financial Implications 
Total Estimate of Cleanup cost = $18.2 Million 
The cleanup costs of the Lora Lake Apartments parcel and the Lora
Lake parcel will be accounted for differently: 
The Lake cleanup will be accounted for as an operating cost as the property is
part of the object free area within the runway protection zone (RPZ), thus no
development is permitted 
Estimated cost = $4.9 million (2013 operating cost) 
The Lora Lake Apartments parcel is not necessary for airfield operations. The
Port's intent is to clean up the property in anticipation of sale. The clean-up
costs are being accounted for as non-operating costs. 
Estimated cost = $13.3 million ($11.5 million recognized as non-operating expense in
2012, $1.8 million recognized as non-operating expense in 2013)