The property remediation program involves sampling and remediating, if required, residential and commercial properties containing soils contaminated with lead and/or arsenic in the CDA Basin from the mouth of the main CDA River at Harrison, Idaho to the head waters of the South Fork CDA River. The work does not include properties along the North Fork of the CDA River. The Idaho Department of Environmental Quality (IDEQ) is the lead agency managing this work.
Once the soil is known to be contaminated at a property, it is removed down to a predetermined depth and taken to a contaminated waste soil repository. In some cases, a plastic fabric barrier is placed down before clean soil is put back. A cover of topsoil or gravel is then put on top of this barrier. The topsoil areas are then seeded or sod is placed. Homes where children age six and under or pregnant women live are considered high risk. Remediation of high risk properties are emphasized before other properties.
If you live in the area noted above and would like information concerning your property please call the IDEQ Superfund Project Office, (208) 783-5781.