Historical Liquid Discharges and Outfalls

  • During the 1940s and 1950s, untreated radioactive liquids were discharged to Pueblo and Los Alamos Canyons.
  • Radiation treatment facilities were constructed in the 1950s.
  • In 1963, the Technical Area 50 (TA-50) Radioactive Liquid Waste Treatment Facility started operations.
  • By 1978, the National Pollutant Discharge Elimination System (NPDES) Permit included 120 industrial and 12 sanitary outfalls.
  • Following LANL's commitment to reduce discharges to the environment, by 2011 only 9 outfalls remained.

Contamination from the Acid Canyon outfall has been clean up to below residential levels
Contamination from the Acid Canyon outfall has been clean up to below residential levels



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