Mutual Materials Newcastle Lot 4 Cr
Status
December 2020, Ecology determined the site meets cleanup standards. Ecology issued a No Further Action Letter.
Site Background
The Site was occupied by a former brick plant facility that used a portion of the property to store brick debris and brick products approximately between 1957 and 2011. All the historical structures related to the brick plant were demolished and removed. The Property is currently being developed with apartments and parking lots.
A Site investigation conducted in 2014 revealed that chromium contamination is present in the soil as a result of the former brick plant operations.
Site Cleanup In Process
In 2015, cleanup activities were conducted at the Site, which included characterization of the contamination, removal of the brick debris and impacted soil, off-Site disposal of the removed materials, and soil cleanup confirmation sampling.
Based on the Cleanup Action Report (October 1, 2019), the impacted soil with chromium exceeding the cleanup level was completely removed and disposed off-Site. However, it is unknown if ground water is impacted as it has not been sampled. Ground water sampling must be conducted before Ecology is able to determine if further cleanup action is required at this Site.
Following Ecology’s recommendation dated February 19, 2020, Newcastle Joint Ventures conducted a study to assess presence of the groundwater at the Site. The study report dated August 12, 2020 concluded that the groundwater proximately exists 30 feet below ground surface at this Site. As a result, Ecology determined the groundwater was unlikely impacted by the contamination release from the surface. Therefore, a NO Further Action letter was issued on December 1, 2020.
Contaminants Of Concern
Chromium into the Soil.
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.
Documents 6
Technical Reports 3
| Document Title | Document Date | Document Type |
| Rivised Cleanup Action and Response to Ecology Letter | 8/12/2020 | Site Specific Technical Document - Other |
| Revised Cleanup Action Report, Mutual Materials Newcastle Lot 4 Cr Site | 8/12/2020 | Remedial Action Report |
| Mutual Materials Newcastle Lot 4 Cr Site - NW3248 Cleanup Action Report | 10/1/2019 | Remedial Action Report |
Voluntary Cleanup Program 3
| Document Title | Document Date | Document Type |
| Ecology's Site NFA Letter | 12/1/2020 | VCP Opinion on Site Cleanup – NFA |
| Mutual Materials Newcastle Lot 4 Cr Site - NW3248 Further Action Opinion Letter | 2/20/2020 | Voluntary Cleanup Program Opinion – Other |
| Mutual Materials Newcastle Lot 4 Cr Site - NW3248 VCP Acceptance & Early Notice Letter | 11/8/2019 | VCP Administrative Document |
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.
Contaminants 1
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Metals - Metals - Other | RB |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated