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.

Public Comment Opportunities

DOE is accepting public comments on the draft EA and has extended the comment period through March 13, 2024. Please submit public comments using one of the following methods:

  • Email: Please use the subject line: Chromium Draft EA Comment 
  • U.S. Mail: EM-LA NEPA Document Manager, U.S. DOE Environmental Management Los Alamos Field Office, 1200 Trinity Drive, Suite 400, Los Alamos, NM 87544

DOE is hosting two public meetings as detailed below:

  • Monday, January 22, 2024: In-person meeting at Cities of Gold Hotel and Casino Ballroom, 10 Cities of Gold Road, Pojoaque, New Mexico from 6:00-8:00 p.m. MDT
  • Wednesday, January 24, 2024: Virtual meeting from 1:00-3:00 p.m. MDT
    To join via video through your computer or smart device, go to and enter Meeting ID: 849 7723 8202. You will be prompted to enter a Passcode: 062428 and your name.
    To join via audio (participants will hear the presentation but not see it), call +1 669-444-9171 and enter the above Meeting ID and passcode.

In addition to the comment period above, DOE is also requesting public comment on the Floodplain Assessment (Chromium Remediation in Sandia and Mortandad Canyons Project Floodplain Assessment). The comment period for the Floodplain Assessment is February 9, 2024.