CX-003490: Categorical Exclusion Determination

Install Monitoring Wells at Slick Rock West, Colorado, Processing SiteCX(s) Applied: B3.1Date: 08/10/2010Location(s): Slick Rock, ColoradoOffice(s): Legacy Management

Office of NEPA Policy and Compliance

August 10, 2010
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Install Monitoring Wells at Slick Rock West, Colorado, Processing Site
CX(s) Applied: B3.1
Date: 08/10/2010
Location(s): Slick Rock, Colorado
Office(s): Legacy Management

The U.S. Department of Energy (DOE) Office of Legacy Management (LM) proposes to abandon groundwater monitoring Well 0318 and install three new groundwater monitoring wells at the Slick Rock West, Colorado, Processing Site. Existing Well 0318 would be replaced with Well 0318A. The well would be abandoned because either the screen or casing has broken. Well 0318 has 3 feet (ft) of sand inside the casing and about 1 ft of water above the sand, and would be abandoned according to State of Colorado well abandonment regulations (2 CCR 402-2 Rule 16). Wells 0339 and 0340 would be new well locations.

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