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CX-002195: Categorical Exclusion Determination

Install a Test Cover at Grand Junction, Colorado, Disposal Site
CX(s) Applied: B3.1
Date: 05/03/2010
Location(s): Grand Junction, Colorado
Office(s): Legacy Management

The U.S. Department of Energy (DOE) Office of Legacy Management (LM) proposes to install a 70 foot (ft) x 140 ft test cover that duplicates the top 42 inches of the existing cover at the Grand Junction, Colorado, Disposal Site. The purpose of the test cover is to evaluate methods for renovating low-permeability disposal cell covers and to measure the effects of renovation on soil hydraulic properties and seedbed ecology. The test cover would be constructed on the surface of an existing stockpile of clay soil and would be located approximately 100 feet from an existing access road. Light grading to create a haul road across the surface of the stockpile to the test cover location would be required.