Interim Guidance On Interpretation And Implementation Of Aquatic Life Criteria For Metals
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This guidance addresses the use of EPA (and corresponding
State) metals criteria in water quality standards intended to protect aquatic life. This guidance also addresses the derivation
of NPDES permit limits from such criteria. The main body of
the document presents recommendations on the best current approaches
for implementing aquatic life criteria for metals and
measuring attainment of such criteria. This guidance supersedes
past criteria document statements expressing criteria in terms of
an acid soluble analytical method.