Bothell Paint & Decorating
Current Status - July 2021
Previously, the City of Bothell completed a Remedial Investigation and Feasibility Study (RI/FS) on August 10, 2017. The RI/FS determined the nature and extent of remaining contamination and evaluated possible methods to clean up the site. They also prepared a Draft Cleanup Action Plan describing how they will clean up the site. A comment period was held to get public input on these documents, and Ecology responded to all comments.
Excavations that removed petroleum contaminated soils were conducted in September-October 2010 and March 2013. Following the excavations, confirmation samples were taken. Oxygen Release Compound (ORC) was placed in the 2010 excavation. Confirmation sampling in the excavations confirmed that most of the contamination was removed, save for a single sample above cleanup levels but now beneath the new SR 522 roadway. Groundwater monitoring for petroleum hydrocarbons and arsenic was also carried out as part of the cleanup plan. Recently, two years of quarterly monitoring shows that only arsenic in monitoring well BPMW-6 appears to be above cleanup levels and co-located with TPH detections.
Therefore, Ecology has proposed that institutional controls with groundwater monitoring be maintained at the Site as a final remedy. The institutional controls shall specifically address the containment of the pocket of residual soil contamination beneath SR 522 and restrictions on groundwater withdrawal and use. Under the proposal, monitoring well BPMW-6 continue to be sampled every five years for arsenic (total and dissolved) and TPH-Oil. Sample results shall be incorporated in the five year periodic review report required under MTCA for sites with institutional controls under an environmental covenant. In the periodic review, the results shall be evaluated to assess protectiveness of the remedy and to confirm stable, decreasing or increasing concentration trends. If contaminant concentrations are increasing, the City shall propose corrective actions including further investigations and active remedial measures needed to identify, understand, and clean up the increased groundwater contamination. Other site well shall be decommissioned under the proposal.
Ecology will update this web page once the next steps outlined above are accepted.
Site Background
Historical operations on the property included automobile repair and dealerships, retail paint and flooring, and sandblasting. This site was used by a former sandblasting operation and contained at least one petroleum underground storage tank (UST). A 1,000-gallon UST was removed near the northeast corner of the west building at the site in 1988. A hole in the UST was observed at the time of removal. Petroleum liquid (free product) was reported in the excavation on the surface of ground water. A soil sample collected from the sidewall of the excavation during tank removal contained petroleum hydrocarbons (gasoline-range) above the MTCA cleanup levels.
Additionally, sandblasting operations were conducted at this site in the southern portion of the property by a former tenant. Sandblast grit and petroleum staining associated with a compressor were observed in that vicinity. Shallow soils in the sandblast area contain petroleum hydrocarbons and metals exceeding MTCA cleanup levels. One soil sample contained cadmium exceeding Washington State Dangerous Waste requirements. One ground water sample contained arsenic concentrations exceeding MTCA cleanup levels and possibly exceeding natural background levels. Note that natural background levels have not been determined for this site at this time.
Interim action soil cleanups for petroleum hydrocarbons and metals were conducted in 2010, 2013, and 2014. Chemicals of concern remaining at the site after the interim action cleanups are:
- In soil: Gasoline and motor oil-range petroleum hydrocarbons.
- In groundwater: Diesel and motor oil range petroleum hydrocarbons, and arsenic.
Site use restrictions called institutional controls are in effect
Institutional controls can be fences, signs, or restrictions on how the property is used. For instance, an institutional control may prohibit installing drinking water wells or disturbing a protective cap that isolates contamination. These restrictions keep the contamination contained and keep people from being exposed to the contamination. The controls are usually listed in environmental covenants recorded with the county.
Periodic reviews are required when institutional controls are required at a site. Ecology conducts reviews to make sure the controls remain effective and the cleanup still protects human health and the environment. We conduct periodic reviews about every five years.
Institutional Controls 1
Other Upland Instrument
Covenant Restrictions
- Maintain/Protect Monitoring System
- Ongoing Maintenance of Remedy
- Prohibit Soil Disturbance
- Restrict All Ground Water Extraction/Well Installation
- Restrict Domestic Ground Water Extraction/Well Installation
Media Restrictions
- Groundwater
- Soil
Documents 47
Legal 8
Document Title | Document Date | Document Type |
Memorandum of Agreement between the Washington State Department of Ecology (Ecology) and the City of Bothell (City) regarding City Streets and Right-of-ways at MTCA Sites | 7/9/2021 | Interlocal/Interagency Agreement; Memorandum of Agreement or Understanding |
Environmental Covenent Bothell Paint & Decorating | 5/13/2020 | Environmental Covenant; Alternative Mechanism |
Final Agreed Order No. DE 15748 Bothell Paint & Decorating (Cleanup) | 5/31/2018 | Agreed Order |
Bothell Paint & Decorating Cleanup Agreed Order 2018 (Public Review Draft) | 4/5/2018 | Agreed Order |
Satisfaction of Agreed Order No. DE 6296 for the Bothell Paint & Decorating Facility | 1/31/2018 | Order Notice of Satisfaction/Status |
Bothell Paint and Decorating Agreed Order Amendment | 6/9/2010 | Agreed Order Amendment |
Bothell Paint and Decorating RI/FS Work Plan Amendment and Approval | 8/1/2009 | Agreed Order Amendment |
Bothell Paint and Decorating Site - Final Agreed Order (RI/FS) | 2/3/2009 | Agreed Order |
Public Information 5
Document Title | Document Date | Document Type |
Bothell Paint and Decorating Updated Public Participation Plan | 4/2/2018 | Public Participation Plan |
Bothell Paint and Decorating 2018 comment period mailer | 4/2/2018 | Fact Sheet\Public Notices |
City of bothell Fact Sheet Public comment period for Interim Remedial Actions at three Sites in Downtown Bothell | 5/1/2010 | Fact Sheet\Public Notices |
Bothell Paint and Decorating Public Participation Plan | 12/1/2008 | Public Participation Plan |
Bothell City of Bothell Agreed Orders Fact Sheet Three Agreed Orders with the City of Bothell Available for Comment | 12/1/2008 | Fact Sheet\Public Notices |
State Environmental Policy Act 4
Document Title | Document Date | Document Type |
State Environmental Policy Act Determination of Nonsignificance Bothell Paint & Decorating | 3/15/2018 | SEPA Documents |
SEPA Environmental Checklist Bothell Paint & Decorating | 10/12/2017 | SEPA Documents |
Bothell Landing/Riverside/Paint and Decorating SEPA DNS | 4/14/2010 | SEPA Documents |
Bothell Landing/Riverside/Paint and Decorating SEPA Checklist | 1/31/2010 | SEPA Documents |
Technical Reports 30
Places to see print documents
-
Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
-
King County Bothell Regional Library18215 98th Ave NEBothell, 98011This location may only have print documents available during open comment periods.
-
Bothell City Hall18415 101st Ave NEBothell, 98011This location may only have print documents available during open comment periods.
Contaminants 3
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Metals - Metals Priority Pollutants | RB | |||||
Non-Halogenated Organics - Petroleum Products-Unspecified | RA | RA | ||||
Metals - Arsenic | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated