Categorical Exclusion Determination
Office of NEPA Policy and Compliance
September 13, 2017
Estimated Read Time min
Deep storm water injection wells CFA 1 (34-W-003-004) and SPERT DISP 2 (34-W-003-002) are no longer needed and need to be decommissioned. After approvals are received, Idaho National Laboratory will decommission the wells. The well casings will be filled with soil and grout, and a cap will be welded on the inlet pipe, or it will be sealed with grout. A layer of grout will be poured into the concrete vault, and the remainder of the vault will be filled with gravel obtained from the Monroe gravel pit. A licensed Professional Engineer will oversee the work.