2019 Construction Update – Smelter Hill

Given its close proximity to the Washoe Smelter and the Anaconda Reduction Works facilities, the soils and waters of Remedial Design Unit 3 (RDU3)  was more significantly impacted by smelter fallout than other areas within the Anaconda Smelter NPL site. 

Development of remedial designs for RDU 3 – Smelter Hill Uplands was completed in 2013.

These designs required the reduction of surface soil arsenic levels to current open space/recreation standards – where practicable – through the installation of protective vegetative covers. This process includes tilling with lime and soil amendments; leading to the ultimate establishment of a self-sustaining, diverse plant species. 

Approximately half of the total acreage within RDU 3 required remediation. 

Before:
High contaminants of lead and arsenic
Complete lack of vegetation

After:
Removal and remediated vegetative covers installed
Tilling with lime and soil amendments
Steep slope vegetation will be done this summer