Categorical Exclusion Determination
Office of NEPA Policy and Compliance
January 18, 2017
Estimated Read Time min
Install seepline monitoring stations located where the groundwater tritium plume is discharging into Castor Creek based on previous environmental borings to provide data for the C-Area Groundwater Operable Unit Feasibility Study. These stations will be approximately three feet deep, and they are located in a sensitive wetland area; therefore they will be hand-augered.