Waterway 20 Upland
INITIAL INVESTIGATION
When Ecology learns about a release of a hazardous substance into the environment, we do an Initial Investigation. Release information may come to us through the Environmental Report Tracking System, either from the property owner making a required notification or as a complaint from someone who saw the release.
During the Initial Investigation, we evaluate environmental conditions at the property and review all available data. The goal of the Investigation is to determine if the release may pose a threat to human health or the environment, and if further cleanup actions are needed. We track any site that is suspected or confirmed to be contaminated with hazardous materials, as required by the Model Toxics Control Act (MTCA).
FURTHER ACTION REQUIRED
Ecology has conducted an Initial Investigation and determined that remedial action is needed at this site. Cleanup actions may be conducted independently - without Ecology involvement - or through Ecology's Voluntary Cleanup Program (VCP). A No Further Action determination may be reached with oversight by an Ecology site manager through the VCP.
Documents 6
Legal 1
| Document Title | Document Date | Document Type |
| Waterway 20 Upland - Early Notice Letter | 12/21/2021 | Early Notice Letter |
Technical Reports 5
| Document Title | Document Date | Document Type |
| Waterway #20 Supplemental Phase II Environmental Site Assessment | 5/22/2024 | Site Specific Technical Document - Other |
| Waterway #20 Supplemental Phase II ESA Lab reports | 5/22/2024 | Site Specific Technical Document - Other |
| Waterway20 Phase II Assessment Site Characteristics | 5/18/2023 | Site Specific Technical Document - Other |
| Waterway 20 Upland - Initial Investigation Field Report | 11/19/2021 | State Initial Investigation Report |
| Waterway 20 Upland - Soil Sampling Technical Memorandum | 6/30/2016 | Site Specific Technical Document - Other |
Places to see print documents
-
Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
Contaminants 1
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated