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EPANonrulemakingEPA-HQ-OW-2016-0353

Draft Field-Based Methods for Developing Aquatic Life Criteria for Specific Conductivity

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National Mining Association filed 1 comment on this docket between Apr 26, 2017 and Apr 26, 2017. 17 other organizations filed here. The comment window closed 3382d ago.

What National Mining Association filed (1)

Apr 26, 2017· Comment submitted by Amanda E. Aspatore, Vice President, Water Law & Policy, National Mining Association (NMA)· EPA-HQ-OW-2016-0353-0078

Filed on regulations.gov — full text not in the inline record.

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Abstract

The EPA has developed a set of draft methods that states and authorized tribes may use to derive field-based ecoregional ambient aquatic life criteria for specific conductivity, a measurement of ionic concentration, in flowing waters. The EPA's methods provide flexible approaches for developing science-based conductivity criteria that reflect ecoregional- or state-specific factors. Once final, states and authorized tribes located in any region of the country may use the methods to develop field-based conductivity criteria for flowing waters. The draft document provides a scientific assessment of ecological effects and is not a regulation.

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Co-filers (17)

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