6504 Postma Rd Transformer Release
Facility Site ID:
99998838
Cleanup Site ID:
16760
In September 2022, a release occurred from a pole-mounted transform situated in the south right-of-way of Postma Road.
The quantity of released oil was estimated as less than a gallon. Analysis of the mineral oil showed a total polychlorinated biphenyls (PCBs) concentration of 88 milligrams per kilogram (mg/kg) which is above the Model Toxics Control Act Method A soil CUL of 1 mg/kg.
Contaminated soil was classified as TSCA hazardous waste. The 0.035 tons of impacted soil and associated cleanup materials were disposed of at the Chemical Waste Management (hazardous waste) facility in Arlington, Oregon.
Ecology determined that no further action is needed in December 2022.
The quantity of released oil was estimated as less than a gallon. Analysis of the mineral oil showed a total polychlorinated biphenyls (PCBs) concentration of 88 milligrams per kilogram (mg/kg) which is above the Model Toxics Control Act Method A soil CUL of 1 mg/kg.
Contaminated soil was classified as TSCA hazardous waste. The 0.035 tons of impacted soil and associated cleanup materials were disposed of at the Chemical Waste Management (hazardous waste) facility in Arlington, Oregon.
Ecology determined that no further action is needed in December 2022.
Documents 2
Technical Reports 2
| Document Title | Document Date | Document Type |
| 6504 Postma Rd Transformer Release - initial investigation field report | 12/19/2022 | State Initial Investigation Report |
| 6504 Postma Rd Transformer Release - remedial action report | 11/9/2022 | Remedial Action Report |
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
-
Central Regional Office1250 W Alder StUnion Gap, 98903-0009Please schedule an appointment to view print documents at this location.
Contaminants 2
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Halogenated Organics - Polychlorinated biPhenyls (PCB) | RB | |||||
| Non-Halogenated Organics - Petroleum-Other | RB |
- 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.