US EPA has released a Notice of Proposed Rule Making (NPRM) for a rule to address an order by the U.S. District Court for the Northern District of Florida from February 18, 2012 The District Court had remanded to the EPA two portions of its numeric water quality standards for nutrients in Florida that were promulgated and published on December 6, 2010.
This proposed rule will either provide additional justification for the criteria derived or derive different criteria using the reference condition approach for Florida streams and for the derivation of the downstream protective values (DPVs) for unimpaired lakes. The rule will address the likelihood of adverse impact, i.e., imbalance in natural populations of aquatic flora and fauna, occurring at concentrations greater than the stream criteria and the DPVs for unimpaired lakes.
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