Summary
Groundwater sampling data from monitoring wells at Los Alamos National Laboratory (LANL) indicate the presence of chromium contamination in the regional aquifer resulting from historical use of potassium dichromate, a corrosion inhibitor, in cooling tower water that was discharged to an outfall as part of operational maintenance activities. DOE is preparing an EA to evaluate alternatives for remedial action as part of the Chromium Interim Measures and Characterization Campaign identified in Appendix A of 2016 Compliance Order on Consent between DOE and the New Mexico Environmental Department.