CX-001631: Categorical Exclusion Determination

Install Wells and Boreholes at the Old Rifle Colorado Processing SiteCX(s) Applied: B3.1Date: 04/15/2010Location(s): Old Rifle, ColoradoOffice(s): Legacy Management

Office of NEPA Policy and Compliance

April 15, 2010
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Install Wells and Boreholes at the Old Rifle Colorado Processing Site
CX(s) Applied: B3.1
Date: 04/15/2010
Location(s): Old Rifle, Colorado
Office(s): Legacy Management

The Environmental Remediation Sciences Program (ERSP) proposes to install 36 wells and 5 boreholes on the Old Rifle, Colorado, Processing Site. A combination of 13 injection wells, 18 monitoring wells, 5 multi-chambered wells, and 5 boreholes would be installed using a sonic rotary drill rig. Five of the wells would be used for U.S. Department of Energy (DOE) Office of Legacy Management (LM) groundwater monitoring purposes and the remainder (31 wells and 5 boreholes) would be installed in a single gallery (Super 8) to be used for research and monitoring purposes by the ERSP (e.g., injection and groundwater monitoring).

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