Duwamish Update January 2007

EPA is experimenting with new ways to get information out to anyone interested in
the Superfund investigation and cleanup activities in the Lower Duwamish
Waterway. These e-mail updates will provide announcements and reminders about
upcoming meetings or reports. If you have suggestions on how to make these
updates more useful to you, contact Renee Dagseth at 206-553-1889 or
dagseth. renee@epa. gov.

You are receiving this e-mail because you asked to be on EPA's list to receive e-
mail updates on Lower Duwamish Waterway cleanup work. Please feel free to
forward it to anyone who has an interest in the Duwamish. If you did not receive this
e-mail directly from EPA and would like to be added to our e-mail list for future
updates, or if you would like to be removed from this list, please contact Renee.

Please check our Duwamish website which is being updated regularly.
http://vosemite.epa.gov/r10/cleanup.nsf/sites/lduwamish.

Lower Duwamish Remedial Investigation/Feasibility Study:

The Lower Duwamish Waterway Group (LDWG) currently is revising the Human
Health Risk Assessment, the Ecological Risk Assessment, and the Feasibility Study
Work Plan to address Agency comments. LDWG also is preparing a report showing
results of a February 2006 subsurface sediment sampling. The sampling report
should be available by the end of January. All final reports will be posted on
www.ldwg.org and EPA's Duwamish website (see above).

(EPA contact: Allison Hiltner, 206-553-2140 or hiltner.allison@epa.gov.)

Rhone-Pouienc site:

The east portion of the site has been cleaned up voluntarily by the property owner.
EPA published its Statement of Basis in November 2006 and requested public
comments. (The Statement of Basis is the RCRA equivalent to the Superfund
Record of Decision. It announces EPA's remedy decision.) The public comment
period has ended, and EPA published its final decision and Response to Comments
on December 20, 2006. This document can be found at:

http://vosemite.epa.gov/R10/CLEANUP.NSF/LDW/Rhone-Poulenc+lncorporated.

Toluene remains in the groundwater under the southwest corner of the property, and
the current property owners have agreed to treat that groundwater if it remains
above the final groundwater cleanup level in six months.

(Contact: Christy Brown, 206-553-8506 or brown.christv@epa.gov.)

Boeing Plant 2 Early Action site:

Boeing will be taking sediment samples within the central part of the Duwamish
Waterway adjacent to Boeing Plant 2 in order to determine the western extent of the
Boeing Plant 2 early cleanup action. Sampling will start by the end of March. EPA is
waiting for a Memorandum of Agreement between Boeing and Jorgensen Forge


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which will clarify who has responsibility for sediment cleanup along the southern
boundary of Boeing Plant 2.

(Contact: Howard Orlean, 206-553-2851 or orlean.howard@epa.gov.)

T117 Early Action site.

EPA, the Port and City of Seattle are working to complete a Statement of Work for
the Engineering Evaluation/Cost Analysis (EE/CA) to determine the extent of upland
contamination in soil and groundwater and to evaluate alternatives to address this
contamination along with other T-117 Early Action Area contamination. This
Statement of Work will be attached to an Amended Settlement Agreement which
EPA expects to issue to the Port and City as soon as negotiations have been
completed.

(Contact: Piper Peterson Lee, 206-553-4951 or peterson-lee.piper@epa.gov)

Slip 4 Early Action site:

The City of Seattle and King County submitted draft (also known as 60% design)
documents to EPA on October 27, 2006 for review. EPA returned its comments on
the draft on November 27, 2006. Final (100% design) documents are due on
February 9, 2007. EPA expects to complete its review of those documents on March
2, 2007. These documents will be on EPA's website (see above).

(Contact: Karen Keeley, 206-553-2141 or keelev.karen@epa.gov.)


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