Burlington Environmental LLC Georgetown
734 S Lucile St, Seattle, WA 98108

Site Map
Please click on the photo for a larger view

SITE BACKGROUND

Last updated, March 2018

This cleanup site and the name on this website is Burlington Environmental. Burlington Environmental is a wholly-owned subsidiary of PSC Environmental Services, LLC, which is a wholly-owned subsidiary of Stericycle Environmental Solutions, Inc.  We often refer to the site and facility as “PSC-Georgetown” because it is the name most familiar to the local community.

Ecology divided this cleanup in Georgetown into two separate cleanup sites with individual legal agreements. We call them East of 4th and West of 4th.  Soil and groundwater are contaminated at both sites.

East of 4th: The area East of 4th contains groundwater and soil contaminated with chemicals from the PSC-Georgetown facility located at 734 S. Lucile St.  Stericycle is responsible (Potentially Liable Persons or PLP) for the cleaning up this site. 

West of 4th: Contaminated groundwater migrated from the Stericycle facility to areas west of 4th Avenue., S and mingled with contamination from three other companies: Art Brass Plating, Blaser Die Casting and Capital Industries.  These three companies together with Stericycle are the PLPs responsible for cleaning up this site.


CURRENT STATUS, WEST OF 4TH

Pilot studies to teat cleanup are underway and a work plan for the Interim Action is under review.

Ecology reviewed and approved work plans for the next steps in the cleanup in January, 2018. The work plans, submitted by the PLPs included two Feasibility Study (FS) pilot studies and an Interim Action.

Site Unit 1 Pilot Studies update:

Metals Immobilization Pilot Study, Unit 1:

  • New wells were installed and soil and groundwater samples collected
  • The "bench-scale" portion of the study was started in February

CVOC (chlorinated volatile organic compound) Pilot Study, Site Unit 1:

  • New wells were installed and groundwater samples collected
  • Draft version of the study's "Field Investigation Work Plan" was submitted on April 4, 2018.

Unit 2 Interim Action update: To proceed with the studies, the PLPs submitted a Draft Field Investigation Work Plan to Ecology. Ecology reviewed the document In March, 2018 and the PLPs are revising it.

What Happens Next?

  • The PLPs complete the Pilot Studies and Interim Action, mid-2019. PLPs submit results to Ecology for review.
  • PLPs prepares an Feasibility Study (FS) Report Addendum (Addendum) containing alternatives for cleaning up the site. 
  • Ecology will review the Addendum.
  • Ecology will chose a preferred cleanup action and draft a Cleanup Action Plan (CAP) for public review.
  • Ecology will finalize the CAP after Public Comment.


Pilot Study Layout, Near Duwamish Waterway
Please click on the photo for a larger view

CLEANUP - WEST OF 4TH, SITE UNIT 1 PILOT STUDY NEAR DUWAMISH WATERWAY

In this site area groundwater is contaminated with trichloroethene (TCE) and vinyl chloride. The study will be determine if in-situ chemical reduction (ISCR) and/or enhanced in situ bioremediation (ISB) will be effective.


Pilot Study Locations, Art Brass Plating
Please click on the photo for a larger view

CLEANUP - WEST OF 4TH, SITE UNIT 1 PILOT STUDY NEAR ART BRASS PLATING

This is an area where elevated levels of nickel and other metals are present in groundwater. This study will determine the best way to raise groundwater pH, and thereby lower metals concentrations


Interim Action Injection Points
Please click on the photo for a larger view

CLEANUP - WEST OF 4TH SITE, INTERIM ACTION

This action will focus on an area where groundwater is contaminated with TCE and vinyl chloride, but farther south and east, near 4th Avenue South.  The Site Unit 2 interim action will utilize in situ chemical oxidation (ISCO).


CURRENT STATUS, EAST OF 4TH

The biological cleanup method tested in the pilot study for groundwater contaminated with 1,4 dioxane was not successful at this site.

One of the cleanup methods (a biological method called bioaugumentation) tested in the 2017 pilot study did not effectively reduce the contaminant 1,4 dioxane levels in groundwater. The study introduced non-native microorganisms (i.e. bacteria) capable of destroying 1,4 dioxane into the groundwater at one location near Sixth Ave. S. and S. Orcas St. Stericycle then monitored the groundwater through the rest of 2017. The results of this first phase of the study were reviewed in February.  The microorganisms did not thrive in site groundwater at the depths they were introduced.  Also 1,4-dioxane concentrations did not decrease at that location. Based on the results, both Stericycle and Ecology decided not to continue the second phase of the study.

What Happens Next?

Stericvycle is still testing a second cleanup method (ISCO or in situ chemical oxidation).  Later this year Ecology and Stericycle will review the results and then decide if it is effective enough to use on a larger scale.  See Cleanup section for more details.


2017 in-situ pilot study locations
Please click on the photo for a larger view

CLEANUP - EAST OF 4TH SITE

An in situ bioremediation study, which tested how effective bioaugmentation or bioremediation (see Fig. at left)   could potentially be at the site, concluded in February 2018. It was not effective.



The second ISCO (in situ chemical oxidation) study continues.  It is testing the effectiveness of wax cylinders ("candles") that slowly release two chemical oxidants, persulfate and permanganate, into groundwater. If effective, these two chenmicals can destroy 1,4 dioxane. The candles were installed last summer and are releasing the oxidants into three new wells 50-60 feet below the ground surface. (See Fig. at left, lower left corner)  Ecology will continue to monitor the wells  through May 2018 to see if this method works and could be used across the site.


 

Map showing site location as King County, WA SITE INFORMATION

Map

View Electronic Documents

Site Summary Report

Facility Site ID: # 47779679

Cleanup Site ID: 2622

Location:
Seattle, King County

Status: Cleanup Started   Get definitions of Status terminology

Contacts:
Ed Jones
Site Manager
425-649-4449

Thea Levkovitz
Public Involvement Coordinator



Document Repositories:

Northwest Regional Office
3190 160th Ave SE
Bellevue, 98008-5452
(425)649-7190

South Park Branch / Seattle Public Library
8604 Eighth Avenue South
Seattle, 98108
(206)615-1688