Bellevue Corner UNOCAL 4511

10605 NE 8th Bellevue, King County
Facility Site ID: 5569973 Cleanup Site ID: 7649

More about cleanup

This site has been cleaned up and complies with the standards in the state’s environmental cleanup law, the Model Toxics Control Act.

See the Site Details report at left or the documents below to learn more about this site.

Ecology works to clean up contaminated properties throughout the state. Cleanups are construction projects that remove, treat, or contain potentially harmful substances.

Voluntary Cleanup Program

This site was cleaned up under our Voluntary Cleanup Program, which provides technical help to owners of contaminated sites.

Voluntary Cleanup Program customers pay fees to cover our costs for technical help and reviewing cleanup reports. Sites in this program must meet the same cleanup standards as the sites Ecology manages under legal orders.

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.

Environmental Covenant

County Recording #: 20240409000470
County Recording Date: 4/9/2024

Restrictions/Requirements

  • Control Stormwater
  • Control Vapor/Gas
  • Maintain/Protect Monitoring System
  • Ongoing Maintenance of Remedy
  • Prevent the Reuse or Relocation of Site Soil
  • Prohibit Removal or Alteration of Existing Buildings
  • Prohibit Soil Disturbance
  • Restrict All Ground Water Extraction/Well Installation
  • Restrict Domestic Ground Water Extraction/Well Installation
  • Restrict Land Use

Restricted Media

  • Air
  • Groundwater
  • Soil
Places to see print documents
Legal 2
Document Title Document Date Document Type
Notification of Remaining Contamination and Environmental Restrictions 6/27/2024 Environmental Covenant; Alternative Mechanism
Environmental Covenant King County Parcel 154410-0215 4/9/2024 Environmental Covenant; Alternative Mechanism
Leaking Underground Storage Tank 2
Document Title Document Date Document Type
Bellevue Corner UNOCAL 4511 - UST Closure Assessment 5/21/1992 LUST - Site Assessment Report
Bellevue Corner UNOCAL 4511 - Preliminary ESA 9/5/1990 LUST Site Characterization Report
Technical Reports 23
Document Title Document Date Document Type
Cleanup Action Report, Part 5 of 5 9/15/2023 Remedial Action Report
Cleanup Action Report, Part 4 of 5 9/15/2023 Remedial Action Report
Cleanup Action Report, Part 3 of 5 9/15/2023 Remedial Action Report
Cleanup Action Report, Part 2 of 5 9/15/2023 Remedial Action Report
Groundwater Monitoring Report 9/15/2023 Groundwater Monitoring Report
Cleanup Action Report, Part 1 of 5 9/15/2023 Remedial Action Report
Bellevue Corner UNOCAL 4511 - Remedial Investigation / Feasibility Study and Cleanup Action Plan 11/20/2020 Remedial Investigation / Feasibility Study
Bellevue Corner UNOCAL 4511 - Remedial Investigation Work Plan, NE 8th & 106th Ave Property 2/7/2020 Remedial Investigation Work Plan
Bellevue Corner UNOCAL 4511 - Phase II Environmental Site Assessment, NE 8th & 106th Ave Property 11/15/2019 Site Specific Technical Document - other
Bellevue Corner UNOCAL 4511—NW3096 VCP Termination Letter 6/24/2019 Site Specific Administrative Document - other (Administrative correspondence)
Technical Memorandum, Thinker Toys Site, Summary of Additional Data, 606 106th Ave NE, Bellevue WA 6/10/2019 Site Specific Technical Document - other
Review of Soil and Groundwater Contamination Locations Downgradient of the Thinker Toys Site, VCP No. NW2338, 10610 Northeast 8th Street Bellevue, WA 4/19/2019 Site Specific Technical Document - other
Bellevue Corner UNOCAL 4511 - Revised Cleanup Action Plan 11/22/2016 Cleanup Action Plan
Bellevue Corner UNOCAL 4511 - Cleanup Action Plan 7/7/2015 Cleanup Action Plan
Bellevue Corner UNOCAL 4511 - Revised Draft CAP 12/22/2014 Cleanup Action Plan
Bellevue Corner UNOCAL 4511 - RI/FS December 2014 12/15/2014 Remedial Investigation / Feasibility Study
Bellevue Corner UNOCAL 4511 - Revised Draft RI/FS 6/10/2014 Remedial Investigation / Feasibility Study
Bellevue Corner Unocal 4511 - Draft CAP 4/10/2014 Cleanup Action Plan
Bellevue Corner UNOCAL 4511 - Draft RI/FS 12/30/2013 Remedial Investigation / Feasibility Study
Bellevue Corner Unocal 4511 - Soil and Groundwater Lab Reports 8/27/2010 Site Specific Technical Document - other
Bellevue Corner Unocal 4511 - 2008 Site Investigation 10/10/2008 Site Specific Technical Document - other
Bellevue Corner UNOCAL 4511 - Limited Site Assessment 7/17/2008 Site Specific Technical Document - other
Bellevue Corner Unocal 4511 - 2000 Soil & GW Investigation 4/13/2000 Site Specific Technical Document - other
Voluntary Cleanup Program 13
Document Title Document Date Document Type
NW3259 Site NFA Opinion Letter 6/27/2024 VCP Opinion on Site Cleanup – NFA
Bellevue Corner UNOCAL 4511 - VCP Technical Assistance 5/25/2022 VCP Technical Assistance
Bellevue Corner UNOCAL 4511 - VCP Technical Assistance 8/30/2021 VCP Technical Assistance
Bellevue Corner UNOCAL 4511 - NW3259 VCP Acceptance Letter 2/11/2020 VCP Administrative Document
Termination of VCP Agreement, Bellevue Corner Unocal 4511, VCP NW3096 6/24/2019 Voluntary Cleanup Program Opinion – Other
Bellevue Corner UNOCAL 4511—NW3096 VCP Status Request Letter 5/21/2019 Voluntary Cleanup Program Opinion – Other
Bellevue Corner Unocal 4511 - NFA Likely Opinion on Proposed Property Cleanup 3/21/2017 VCP Opinion on Site Cleanup – Other
Bellevue Corner UNOCAL 4511 - NW2817 Termination of VCP Agreement 11/16/2016 Voluntary Cleanup Program Opinion – Other
Bellevue Corner UNOCAL 4511 - Request for Information on Status of VCP Project 10/13/2016 Voluntary Cleanup Program Opinion – Other
Bellevue Corner UNOCAL 4511 - VCP Opinion Letter NFA Likely 9/8/2014 Voluntary Cleanup Program Opinion – Other
Bellevue Corner UNOCAL 4511 - VCP Opinion Letter on RI 7/14/2014 Voluntary Cleanup Program Opinion – Other
Bellevue Corner Unocal 4511 - VCP Opinion Letter on RI/FS 4/11/2014 Voluntary Cleanup Program Opinion – Other
Unocal #4511 Final Cleanup Status, No Further Action 7/2/1992 VCP Opinion on Site Cleanup – NFA
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Places to see print documents

  • Northwest Regional Office
    15700 Dayton Ave N
    Shoreline, 98133
    Please schedule an appointment to view print documents at this location.

Contaminants 8

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons RA
Halogenated Organics - Halogenated Solvents RA RA RA
Metals - Lead RA
Non-Halogenated Organics - Benzene RA
Non-Halogenated Organics - Other Non-Halogenated Organics RA
Non-Halogenated Organics - Petroleum-Diesel RA
Non-Halogenated Organics - Petroleum-Gasoline RA
Non-Halogenated Organics - Petroleum-Other RA
S
Suspected
C
Confirmed Above Cleanup Levels
B
Below Cleanup Levels
RA
Remediated-Above
RB
Remediated-Below
R
Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.