Sterling Mine
Facility Site ID:
7738114
Cleanup Site ID:
1048
Site Background
The Sterling Mine site is located about 1 mile south of Metaline and is situated east of Highway 31, on the bank of the Pend Oreille River. The Sterling Mine is an inactive zinc, lead, and silver mine. The last known date of operation was 1926. The site included several shallow mineral exploration excavations and associated waste rock piles.
What Has Been Done
An initial site investigation was conducted at the site in 2007 that included the collection of soil samples from waste rock piles. Analytical results from the initial investigation indicate that elevated concentrations of metals including arsenic, cadmium, and lead are present in soil at the site.
Cleanup
A portion of the site was developed with the construction of a single family residence. Construction included regrading and capping mine waste rock beneath the footprint of the building.
Documents 2
Technical Reports 2
| Document Title | Document Date | Document Type |
| Sterling Mine - Request for Information | 5/11/2023 | Site Specific Administrative Document - Other (Administrative Correspondence) |
| Sterling Mine | 6/25/2007 | State Initial Investigation 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 |
|---|---|---|---|---|---|---|
| Metals - Metals Priority Pollutants | C | |||||
| Metals - Metals - Other | C |
- 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.