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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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Last modified
Apr 16, 2024
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closed 3382d ago
Sand & Gravel Association filings
2

Activity

Sand & Gravel Association filed 2 comments on this docket between Jan 17, 2017 and Apr 26, 2017. 17 other organizations filed here. The comment window closed 3382d ago.

What Sand & Gravel Association filed (2)

Apr 26, 2017· Comment submitted by Emily W. Coyner, Director, Environmental Policy, The National Stone, Sand and Gravel Association (NSSGA)· EPA-HQ-OW-2016-0353-0049

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

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Jan 17, 2017· Comment submitted by Emily W. Coyner, Director, Environmental Policy, National Stone, Sand and Gravel Association (NSSGA)· EPA-HQ-OW-2016-0353-0015

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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