Port of Seattle Terminal 91 Site 
Hazardous Waste and Toxics Reduction Program                                         February 2010
Ecology wants your input on the
RCRA Permit with Draft Agreed
Order, Draft Public Participation         Comments Accepted
Plan, Draft Remedial             February 12  March 29, 2010 
Investigation (RI) and Feasibility    Submit Comments and Technical Questions to:
Galen Tritt - Site Manager
Study (FS) Reports
Washington State Department of Ecology
th
1440 10 Street Suite 102
The Washington State Department of Ecology    Bellingham, WA 98225
Phone: (360) 715- 5232
(Ecology) prepared this fact sheet to provide
E-mail: gtri461@ecy.wa.gov
information about the planned clean up of a
former tank farm site at the Port of Seattle's            DOCUMENT REVIEW LOCATIONS
Terminal 91 (T91). This site is located at 2001
Washington State Department of Ecology
West Garfield Street, Seattle, WA.             Northwest Regional Office
th
3190 160 Ave SE
RCRA Permit                 Bellevue, WA 98008
Call for an appointment: Sally Perkins
Enforcement of the U.S. Environmental         Phone: (425) 649-7190
Protection Agency's (EPA) Resource          Fax: (425) 649-4450
Conservation and Recovery Act (RCRA)        E-mail: sper461@ecy.wa.gov
Hours: Tuesday  Thursday
requirements is delegated to Ecology.          8:00 AM  12:00 PM and 1:00 PM  4:30 PM
Ecology's regulations require the Port, as land
owner, to maintain a RCRA permit for the       Seattle Public LibraryCentral
Terminal 91 site until corrective action is         1000 Fourth Avenue
completed, even though the Burlington         Seattle, WA 98104
Environmental Inc. (BEI) permitted waste       206-386-4636
treatment and storage facility ceased operations
Seattle Public LibraryMagnolia Branch
in 1995. This RCRA permit specifies that the
th
2801 34 Avenue W.
Port as permittee will perform the corrective      Seattle, WA 98199
action activities referenced in the Agreed        206-386-4225
Order.
Port of SeattlePier 69
Agreed Order                  2711 Alaskan Way
Seattle, WA 98121
In 1998 Ecology, the Port of Seattle (Port),
206-787-3837
Pacific Northern Oil Corporation (PNO) and
BEI, doing business as Philip Services Corp.               Ecology's Website: 
(PSC) entered into a legal agreement called an
http://www.ecy.wa.gov/programs/tcp/sites/
Agreed Order. The Port owns the Terminal 91 
portTerm91/portTerm91_hp.html
Site. PNO and PSC both had leased land from
the Port at the Terminal 91 Site, and had
operated bulk petroleum storage and waste              Facility Site ID: # 2300
storage and treatment facilities there.

Publication Number: 10-09-161                 1

Hazardous Waste and Toxics Reduction Program           February 2010
Under this Agreed Order, the Port, PNO, and     The chemicals of concern for subsurface soil and
PSC agreed to conduct a Remedial           groundwater at the site are:
Investigation and Feasibility Study (RI/FS).           Gasoline-range petroleum hydrocarbons.
The RI identified the nature and extent of             Diesel-range petroleum hydrocarbons.
contamination at the former tank farm site. The
Heavy-oil-range petroleum
FS assessed alternative ways of cleaning up the
hydrocarbons.
contamination.
Metals.
A new draft Agreed Order is available for            Polychlorinated biphenyls.
public review and comment. The new Agreed        Semivolatile organic compounds,
Order is between Ecology and the Port; PNO         including polycyclic aromatic
has gone out of business since the 1998 order          hydrocarbons.
and Philip filed for bankruptcy protection. The        Volatile organic compounds.
new Agreed Order incorporates cleanup
requirements for the rest of the Port's T91        The property is located in an industrial area in
facility adjacent to the former tank farm site.      the Interbay neighborhood of Seattle. It was
Future remediation of the sediments, if         operated by various oil companies from 1926
necessary, will be accomplished through a       until 1941 when the U.S. Navy took possession.
different Agreed Order that would include the    The Port acquired the facility in the 1970s, and
Port and other potentially liable parties          the tank farm was operated by Philip Services
Corp. and its predecessors from that time until
1995. The tank farm also was operated by
Public Participation Plan            various marine fuel marketing companies until
A draft Public Participation Plan is designed to    2003. The tank farm was demolished by the
promote community involvement during the     Port in 2005.
cleanup process. The plan outlines and
describes the tools and approaches that Ecology
will use to inform the public about site          Draft Remedial Investigation and
activities, and it identifies opportunities for the    Feasibility Study Reports
community to become involved in this process.    The Remedial Investigation reports identified
A copy of the plan is available at:              the nature and extent of the contamination at
http://www.ecy.wa.gov/programs/tcp/sites/   this site. The Feasibility Study report assessed
portTerm91/portTerm91_hp.html           alternative means of cleaning up the
contamination. The cleanup alternatives must
Site Background                protect human health and the environment,
The T91 site was formerly operated by Philip     and comply with state cleanup standards.
Services Corp. as a permitted dangerous waste
treatment and storage facility, and by other       The Feasibility Study also provides information
previous tenants as a fuel storage and          to develop the Cleanup ction Alan. The publicP
distribution tank farm.                     will be invited to review and comment on the
Draft Cleanup Action Plan (CAP) at  a later date.


Publication Number: 10-09-161                 2                  Please reuse and recycle

Hazardous Waste and Toxics Reduction Program            February 2010
Remedial Investigation Findings 
Findings of the Remedial Investigation         In the tank farm area, six different cleanup
included:                            alternatives were considered to meet state
Areas of floating fuel product are         cleanup standards:
present on the water table beneath the
former tank farm at the site. They are      1. Existing asphalt paving maintenance and
not migrating beyond their current          monitoring.
locations.                          2. Containment and passive fuel product
Natural attenuation processes at the site       recovery from the water table.
are degrading petroleum hydrocarbon     3. Active fuel product recovery from the water
constituents in groundwater.             table, and subsurface structure removal.
Low levels of other chemical            4. Containment, subsurface structure removal,
constituents are present in groundwater.      and enhanced fuel product recovery from the
They are not negatively affecting the         water table.
adjacent surface water body (Elliott Bay).    5. Limited excavation of areas with fuel product
Groundwater at the site is not a current       on the water table.
or potential source of drinking water.       6. Excavation of soils exceeding fuel residual
Chemical vapors in the soil are not high       soil saturation limits (i.e., soils that may have
enough to pose a health risk for workers      the potential for development of fuel product
at the site under current land uses.          on the water table).
The Port recommends cleanup alternative #4 as
Feasibility Study Findings            the proposed cleanup method for the site.
First, a set of presumptive remedies were
selected for areas down-gradient of the former    What Happens Next?
tank farm, and in separate smaller source areas.    Following the comment period, Ecology will
These presumptive remedies include:          review all comments. A public meeting is not
Institutional controls such as health and    planned for this site, however, one will be held
safety requirements for site workers.      if ten or more people request a public meeting.
Addressing potential exposures when
future land use changes are made.        If you wish to be added to the mailing list for
Cleaning and decommissioning         this site please contact Galen Tritt at 360-715-
underground fuel pipelines remaining at   5232 or by email at gtri461@ecy.wa.gov. In the
the site.                              subject line, please indicate Port of Seattle
Implementing a monitored natural       Terminal 91 mailing list.
attenuation groundwater sampling
program. This program will ensure that
natural attenuation processes continue to
degrade chemicals in groundwater.
Excavating contaminated soil at the
location of a historic underground fuel
pipeline release down-gradient of the tank
farm.

Publication Number: 10-09-161                 3                  Please reuse and recycle

948002_factsheet                                                                                                                  Imagery Date: June 19, 2002
Source: Google Earth




Residential
Elliott Bay Marina
West Yard
(Upland)
Submerged Land
Upland
Filled Part of Pier 91 (Upland)    Tank Farm Affected Area
Short
Tank Farm
Submerged Land      Fill
(Upland)   Lease Parcel
BNSF Rail Yard
Filled Part of Pier 90 (Upland)
Upland
National Guard
Submerged Land                    (Former U.S. Navy Armory)          Interbay Golf
Driving Range
(Former Interbay Landfill)

Amgen Inc.
(Former Industrial Area)

Note: For areas shown as Tank Farm Affected Area ("TFAA") that are outside the Tank Farm Lease Parcel, the TFAA includes only soil and ground water below the water table. Soil above the
water table (and outside the Tank Farm Lease Parcel) is outside the TFAA.
N    Explanation
Port of Seattle Terminal 91 Facility
0        700 feet             Port of Seattle Property Limits         Tank Farm Affected Area   2001 W. Garfield St., Seattle, WA 98119
Tank Farm Lease Parcel              Submerged Land         Facility ID#2300
The locations of all features are approximate.

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Port of Seattle Terminal 91 Site
King County, WA
Ecology wants your input on the Draft RCRA Permit with Draft Agreed Order and Draft Public
Participation Plan; and the Draft Remedial Investigation/Feasibility Study Reports
Public Comment Period: February 12  March 29, 2010
Facility Site ID #: 2300
If you need this publication in an alternative format, please contact Nancy Lui at (425) 649 - 7117.
Persons with hearing loss, call 711 for Washington Relay Service.
Persons with speech disability call 877-833-6341.