West Seattle ARCO
This site has confirmed or suspected contamination that could potentially harm people and the environment. It is in the state cleanup process under 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 is in 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 sites Ecology manages under legal orders.
Documents 32
Technical Reports 29
Voluntary Cleanup Program 3
| Document Title | Document Date | Document Type |
| Technical Assistance Regarding Subsurface Assessment and VI Work Plan | 9/11/2023 | VCP Technical Assistance |
| Technical Assistance Email Regarding Remedial Action Work Plan | 12/1/2022 | VCP Technical Assistance |
| Arcadis Multisite Agreement (MSA) Termination by Customer | 4/26/2016 | VCP Administrative Document |
Places to see print documents
-
Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
Contaminants 4
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Non-Halogenated Organics - Non-Halogenated Solvents | C | C | ||||
| Non-Halogenated Organics - Methyl tertiary-butyl ether | C | C | ||||
| Non-Halogenated Organics - Benzene | C | C | ||||
| Non-Halogenated Organics - Petroleum-Gasoline | C | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated