Washington State Department of Ecology - November 15, 2013


Agreement outlines cleanup plan for Pioneer Square block

BELLEVUE – An investment group would follow through on pollution cleanup plans while redeveloping a Seattle city block in Pioneer Square under a proposed legal agreement with the Washington Department of Ecology (Ecology).

Ecology seeks public comment on the agreement – called a consent decree – with the limited partnership of 255 King Street and the North Lot Development (NLD) partnership. The agreement covers both the western and eastern portions of a 3.85-acre property located at 201 and 255 South King Street in Seattle.

NLD formerly owned the entire property. A consent decree between Ecology and NLD contained a cleanup plan for the full parcel. NLD implemented part of that plan when it redeveloped the western portion in 2011.

255 King Street recently purchased the eastern portion of the NLD property and will assume responsibility for pollution cleanup there under the proposed agreement. The new consent decree involves Ecology, 255 King Street and NLD.

Ecology will accept comments on the proposed consent decree and related documents through Dec. 16, 2013. Comments should be sent to Jing Liu, Ecology site manager at:

In addition to the consent decree, Ecology seeks comment on:

The 255 King Street property, now a parking lot, is the former site of railroad and locomotive maintenance facilities, constructed over filled-in tidal flats. Contaminants of concern in soil and groundwater include petroleum products and related compounds, arsenic, mercury and dioxins.

The cleanup plan for the eastern parcel, to be implemented during excavation for redevelopment, includes:

The plan also includes ongoing environmental and public safety measures for both parcels:

Cleanup of the western parcel included excavation and disposal of gasoline-contaminated soil at the property’s northwest corner, where two gas stations once stood. Other cleanup measures include chemical treatment of residual gasoline contamination, additional soil excavation and disposal.

The consent decree and all related documents are available at:

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Media Contacts:

Larry Altose, 425-649-7009, larry.altose@ecy.wa.gov, @ecyseattle

Bob Warren, Ecology's Toxics Cleanup Program Regional Manager, 425-649-7054, bob.warren@ecy.wa.gov

For more information:

Ecology's North Lot Website (https://fortress.wa.gov/ecy/gsp/Sitepage.aspx?csid=1966)

Ecology's North Lot Fact sheet (https://fortress.wa.gov/ecy/publications/publications/1309164.pdf)

Ecology’s social media (www.ecy.wa.gov/about/newmedia.html)