The treatment plant removes solids, metals and organic contaminants. The metals process consists of two stages. In the second stage, other metals are removed at a higher pH. Metallic sludge is dried and then trucked offsite to a disposal facility. After metals are removed from the groundwater, most of the organic contaminants are removed with biological treatment.
Biological treatment consists of micro-organisms eating the organics in the presence of oxygen.
Following biological treatment, groundwater is pumped to a sand filtration system where more solids are removed. Carbon adsorption columns are the last step in the process to remove any remaining organic compounds.