Among other legacy cleanup operations, the work performed under the National Pollutant Discharge Elimination System (NPDES)
Individual Permit is managed by N3B for the
Department of Energy’s Environmental Management Los Alamos Field Office,
as of April 30, 2018
Documents recently submitted to the EPRR
September 26, 2019, NPDES Permit No. NM0030759 - U.S. Department of Energy Environmental Management Los Alamos Field Office Response to Written Public Comment on the Alternative Compliance Requests for Seven Site Monitoring Areas
September 26, 2019, NPDES Permit No. NM0030759 - Analytical Results for Site Monitoring Area A-SMA-2, DP-SMA-3, and PT-SMA-2 from the First Measurable Storm Event Following Certification of Enhanced Control Measures
September 24, 2019, Agenda: Individual Permit Public Meeting
September 24, 2019, Individual Permit Revision
September 24, 2019, Individual Permit Control Measure Actions
September 24, 2019, Storm Water and Precipitation Update for 2019
September 24, 2019, Aluminum Toxicity testing of Pajarito Plateau Stormwater
What Is the Individual Permit for Storm Water?
The Permit - NPDES No. NM0030759 - - was issued by the U.S. Environmental Protection Agency, Region 6, on September 30, 2010 to Los Alamos National Security, LLC (LANS) and the U.S. Department of Energy. The Individual Permit became effective on November 1, 2010. On April 30, 2018, responsibilities, coverage, and liability transferred from LANS to Newport News Nuclear BWXT-Los Alamos, LLC (N3B). N3B and the U.S. Department of Energy are collectively referred to as the Permittees.
The Permit contains nonnumeric technology-based effluent limitations, coupled with a comprehensive, coordinated inspection and monitoring program, to minimize pollutants in the Permittees’ storm water discharges associated with historical industrial activities from specified SWMUs and AOCs. The Permittees are required to implement site-specific control measures (including best management practices [BMPs]) to address the nonnumeric technology-based effluent limits, as necessary, to minimize pollutants in their storm water discharges.
The Permit establishes target action levels (TALs) that are equivalent to New Mexico State water-quality criteria. These TALs are used as benchmarks to determine the effectiveness of control measures implemented under the Permit. That is, confirmation monitoring sample results for an SMA are compared with applicable TALs. If one or more confirmation monitoring result exceeds a TAL, the Permittees must take corrective action. The Permit requires that the Permittees either certify to EPA completion of corrective action at each Site by a specific deadline or seek to place individual Sites into alternative compliance, whereby completion of corrective action will be accomplished on a case-by-case basis pursuant to an individually tailored compliance schedule determined by EPA.