Historical Liquid Discharges and Outfalls

During the 1940s and 1950s, untreated radioactive liquids were discharged to Pueblo and Los Alamos Canyons.
August 1, 2013
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

    • 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.
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