CX-008633: Categorical Exclusion Determination

Dismantlement and Removal of 321-M Solvent Storage Tank Area Dynamic Underground Stripping (DUS I) Remnants CX(s) Applied: B3.1 Date: 06/04/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office

Office of NEPA Policy and Compliance

June 4, 2012
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Dismantlement and Removal of 321-M Solvent Storage Tank Area Dynamic Underground Stripping (DUS I) Remnants
CX(s) Applied: B3.1
Date: 06/04/2012
Location(s): South Carolina
Offices(s): Savannah River Operations Office

Dynamic Underground Stripping (DUS) at Savannah River Site was first deployed at the 321-M Solvent Storage Tank Area (west of the former Building 321-M) to remediate solvent source zone contamination in the vadose zone. The deployment was successful and the DUS equipment has been removed. However, the wells associated with the deployment, as well as the operating header of a portable soil vapor extraction unit (SVEU) and assorted debris remain at the site. The purpose of this activity is to abandon the wells per Manual 3Q1 requirements, dismantle and remove for disposal assorted equipment that is no longer required, and to perform general housekeeping at the site of the original DUS deployment.