Plastic Sales & Service
Status Update
· Hearthstone will install one additional shallow groundwater monitoring well and one deep groundwater monitoring well in June 2020.
· Hearthstone will collect one round of groundwater samples from the existing well network in January 2020, and another round of groundwater samples in March 2020.
· Ongoing compliance groundwater monitoring to monitor groundwater quality for constituents of potential concern at the standard point of compliance and performance monitoring to monitor natural attention and geochemical processes and PCE decay rates to assess the subsurface environment and redox conditions within the Shallow Zone and Deep Zone and assess effectiveness of the groundwater treatment program.
Cleanup Actions Completed Between 2016 And 2018
· Demolition of the Dry Cleaner Building to slab on grade for preparation of in situ treatment of soil located in the source area.
· Removal of the two closed-in-place underground storage tanks that reportedly stored Stoddard solvent located directly north of the Dry Cleaner Building Property in the right-of-way of Woodlawn Avenue North East.
· Removal of the heating oil underground storage tanks located on the Dry Cleaner Building Property.
· In situ treatment of soil to a depth of 16 feet below ground surface with concentrations of PCE, designated as dangerous waste when generated, located at the Dry Cleaner Building Property in combination with segregation, excavation, and disposal of contaminated and clean soil and fill materials to meet state cleanup regulations (Model Toxics Control Act).
· Installation of remediation well network and the injection of emulsified oil substrate to treat contaminated soil and groundwater located in the Shallow Zone and Deep Zone.
· Implementation of Institutional Controls at property parcels for areas with residual soil with concentrations of PCE located below the practicable limits of excavation at the Site.
Site Background
The Site is located in at 6860, 6869, and 6870 Woodlawn Avenue Northeast, Seattle, Washington in the Greenlake neighborhood, and consists of approximately 1.04 acres. The existing building, Plastic Sales Inc. conducted its operation, was replaced with a four story retirement building, similar to the four story building at 6860 Woodlawn Ave Northeast which was built in 2010.
In 1947, Sunshine Cleaners acquired property within the Site and constructed a dry cleaning facility. The building (known as the Dry Cleaner Building Property) utilized steam heat fueled by a heating oil underground storage tank (UST). The dry cleaning facility operated from 1948 to 1977. Sunshine Cleaners used Stoddard solvent, which was stored in two USTs with capacities of 1,500 and 2,000 gallons. The USTs were reportedly abandoned in-place in 1958, when Sunshine Cleaners began using tetrachloroethene (PCE) for dry cleaning operations. Sunshine Cleaners reportedly stored PCE in an aboveground storage tank (AST) with a capacity of 200 gallons.
Plastic Sales and Service (PSS) began operating at the Dry Cleaner Building Property in 1978, as a plastic fabrication facility. PSS stored, finished and transformed plastic stock materials into final products from 1978 until 2014.
Hearthstone purchased the Dry Cleaner Building Property in June 2014.
In September 2009, Agreed Order No. DE 7084 was entered into by Ecology, The Hearthstone, PSS, Karkrie LLC, and Ruben and Patricia Rael. Under the terms of the Agreed Order, the PLPs agreed to complete a Remedial Investigation/Feasibility Study (RI/FS).
In June 2016, Consent Decree was entered into by Ecology and The Hearthstone. Under the terms of the Consent Decree, the Hearthstone agreed to implement cleanup actions described in the Cleanup Action Plan.
Contaminants Of Concern
Release(s) and/or potential release(s) of hazardous substances occurred at the Site, including:
Tetrachloroethene (PCE)
Trichloroethene (TCE)
Cis-1,2-dichloroethene
Trans-1,2-dichloroethene
Vinyl chloride
Hazardous substances have been and may continue to be released from the Site into the environment including soil, groundwater and air.
Documents 48
Legal 5
Document Title | Document Date | Document Type |
Janke Property environmental covenant | 6/4/2018 | Environmental Covenant; Alternative Mechanism |
Hearthstone Property Covenant | 3/28/2018 | Environmental Covenant; Alternative Mechanism |
Consent Decree | 6/2/2016 | Consent Decree |
Site diagram | 3/16/2016 | Consent Decree |
Plastic Sales Agreed Order | 9/14/2009 | Agreed Order |
Public Information 8
Document Title | Document Date | Document Type |
ResponsesToComments | 5/16/2016 | Fact Sheet\Public Notices |
Plastic Sales & Service - Consent Decree Documents Fact Sheet | 3/21/2016 | Fact Sheet\Public Notices |
Plastic Sales & Service Site - Spanish Fact Sheet | 3/21/2016 | Fact Sheet\Public Notices |
Plastic Sales and Service - Chinese Fact Sheet | 3/21/2016 | Fact Sheet\Public Notices |
Plastic Sales & Service Site - Public Participation Plan | 3/21/2016 | Public Participation Plan |
Plastic Sales Fact Sheet Interim Remedial Action Workplan and SEPA DNS | 12/1/2010 | Fact Sheet\Public Notices |
Plastic Sales Fact Sheet Agreed Order and Public Participation Plan | 6/25/2009 | Fact Sheet\Public Notices |
Plastic Sales Public Partcipation Plan | 1/1/2009 | Public Participation Plan |
Technical Reports 35
Document Title | Document Date | Document Type |
Progressmemo_Q22024 | 6/17/2024 | Progress Report |
2023AnnualGounewaterRpt | 2/22/2024 | Progress Report |
2023- Groundwater Pilot Test Work Plan Addendum | 1/30/2024 | Remedial Investigation Work Plan |
Dec 4 2023_Janke Indoor Air_Tbl 2 | 12/17/2023 | Site Specific Technical Document - other |
Dec 4 2023_Janke Soil Gas_Tbl 1 | 12/14/2023 | Site Specific Technical Document - other |
2023Q4_Plume Stability | 11/29/2023 | Groundwater Monitoring Report |
2023Q4_GWCM-D-FIG-2 | 11/29/2023 | Groundwater Monitoring Report |
2023Q4_GWCM-S-FIG-1 | 11/29/2023 | Groundwater Monitoring Report |
2023Q4_Tbl2 | 11/29/2023 | Groundwater Monitoring Report |
Pilot Test Work Plan | 9/11/2023 | Remedial Investigation Work Plan |
vapor intrusion assessment sampling and analysis plan | 8/15/2023 | Sampling and Analysis Plan |
2023Q2_Plume Stability | 7/10/2023 | Progress Report |
2023Q2_GWCM-D-FIG-2 | 7/10/2023 | Progress Report |
2023Q2_GWCM-S-FIG-1 | 7/10/2023 | Progress Report |
P2023Q2_CVOC_Results | 7/10/2023 | Progress Report |
Groundwater Progress Report Q4 2022 | 12/28/2022 | Groundwater Monitoring Report |
Groundwater Progress Report Q2 2022 | 7/25/2022 | Progress Report |
PlasticSalesTech Memo_DowngradientWell | 12/18/2020 | Performance/Confirmational Monitoring Plan or Report |
PlasticSales_2020Q4_GWCM-D-FIG-8 | 11/12/2020 | Performance/Confirmational Monitoring Plan or Report |
PlasticSales_2020Q4_GWCM-S-FIG-6 | 11/12/2020 | Performance/Confirmational Monitoring Plan or Report |
GroundwaterPerformanceMonitoringPlan | 3/4/2020 | Performance/Confirmational Monitoring Plan or Report |
GroundwaterPerformanceMonitoringPlan | 3/4/2020 | Performance/Confirmational Monitoring Plan or Report |
Plastic Sales & Service - Contained-In Determination Letter | 4/29/2019 | Site Specific Administrative Document - other (Administrative correspondence) |
IW33/IW34 2019 Email Memo | 4/16/2019 | Performance/Confirmational Monitoring Plan or Report |
IW33/IW34 2019 data | 4/16/2019 | Performance/Confirmational Monitoring Plan or Report |
Contained-In_Request | 5/10/2018 | Remedial Action/As-Built Report |
Thermal Treatment Progress Report 2 | 1/11/2017 | Progress Report |
Thermal Treatment Progress Report 1 | 11/10/2016 | Progress Report |
Contained-In_Request_ | 10/26/2016 | Remedial Action/As-Built Report |
Engineering Design Report | 3/9/2016 | Engineering Design Report |
REMEDIAL INVESTIGATION/FEASIBILITY STUDY Addendum | 3/9/2016 | Remedial Investigation / Feasibility Study |
INTERIM REMEDIAL ACTION COMPLETION REPORT | 12/18/2014 | Interim Action Documents |
DRAFT FINAL Remedial Investigation and Feasibility Study Report | 7/3/2013 | Remedial Investigation / Feasibility Study |
Plastic Sales & Service Contained Out Determination | 11/14/2011 | Site Specific Administrative Document - other (Administrative correspondence) |
Plastic Sales & Service Site Hazard Assessment | 2/1/2006 | Site Hazard Assessment Report |
Places to see print documents
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Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
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Greenlake Public Library7364 E. Green Lake Dr. NSeattle, 98115This location may only have print documents available during open comment periods.
Contaminants 2
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Halogenated Organics - Halogenated Organics | C | C | S | S | ||
Non-Halogenated Organics - Petroleum Products-Unspecified | C | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated