6d supp

Item No. :     6d 
Date of Meeting: December 4, 2012 

Lora Lake Apartments 
Commission Briefing 
December 4, 2012

Today's Request 
Authorization to amend the existing Agreed
Order 
Pre- design sampling tasks 
Completion of a Draft Cleanup Action Plan 
Amend consulting contract for $1.9 Million for
remediation support 
Authorization to begin design of the
Apartment Parcel remediation

Operational and ownership history 
Residential/farming (pre-1940s) 
Barrel washing facility (1940s) 
Auto wrecking yard (1960s-mid 1980s) 
Apartment complex (mid 1980s) 
Contaminated soil remediated to standards of the
time during Apartment construction 
POS acquired Apartments and Lake in late 1998 
Apartments sold to and held by King County Housing
Authority 1998-2007 
Contaminated soil exceeding current standards found
in 2007 during preparation for re-development.

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Investigation and Cleanup Timeline 
Agreed Order - Executed July 2009 
Storm water Study Interim Action  Fall 2009/Winter 2010 
RI Data Collection at Apartments - Summer 2010 
Lora Lake & Miller Creek Sediment Sampling  April/May 2011 
Public Review Draft RI/FS Report to Ecology  January 2013 
Public Comment Period  Mid 2013 
Draft RI/FS Report 
Draft Cleanup Action Plan 
Consent Decree or Agreed Order 
Design Apartment Cleanup  2013 
Complete Clean up at Apartments  Summer 2014 
Complete Clean up at Lake - Summer 2015

Soil and Groundwater Investigation

Clean up Action Areas

Upcoming Milestones 
Public Review Draft RI/FS Report to Ecology  January 2013 
Public Comment Period  Mid 2013 
Draft RI/FS Report 
Draft Cleanup Action Plan 
Consent Decree or Agreed Order 
Design Apartment Cleanup  2013 
Complete Clean up at Apartments  Summer 2014 
Complete Clean up at Lake - Summer 2015

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