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Water: Module 3

Basic Course: Key Concepts (Module 3.f)

Forms of Expression: The Basis for Each Form

Module 3. Criteria Development

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There are specific expectations when developing narrative or numeric critera.

Numeric Criteria

Should be adopted based on:

  • EPA recommendations provided under Section 304(a) of the Clean Water Act, or
  • The Section 304(a) recommendations, but modified to reflect site-specific conditions, or
  • Other scientifically defensible methods.

Narrative Criteria

Should be adopted based on: Biological monitoring and assessment methods to supplement numerical criteria.


Disclaimer:
For informational purposes only–Not official statements of EPA policy.

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