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Los Alamos National Laboratory
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Delivering science and technology to protect our nation and promote world stability

Long-Term Environmental Stewardship

The Long-Term Environmental Stewardship Program ensures protection of human health and the environment, following site remediations.


  • Environmental Communication & Public Involvement
  • P.O. Box 1663 MS M996
  • Los Alamos, NM 87545
  • (505) 667-0216
  • Email

Continuing environmental commitment

Long-term stewardship activities are designed to prevent exposures to residual contamination and waste including

  • groundwater monitoring
  • ongoing pump-and-treatment activities
  • maintenance of barriers and other contaminant structures
  • periodic inspections
  • control of site access
  • posted signs

Long-term environmental stewardship (LTES) data access

DOE requires that data used to make decisions concerning LTES conditions be readily accessible to the public. To accomplish this, sample analysis data used to plan and execute remediation cleanup activities, including the location of any contaminants, is available through the independently administered environmental monitoring database, Intellus NM. The purpose of the Intellus NM project for LANL LTES is to provide long-term environmental data storage and retrieval capability, as well as accountability and redundancy.

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Contact LANL

Mailing Address
P.O. Box 1663
Los Alamos, NM 87545

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Communications Office
(505) 667-7000

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(505) 667-5061

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