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United States Environmental Protection Agency
Causal Analysis/Diagnosis Decision Information System (CADDIS)
Begin Hierarchical Links EPA Home > CADDIS > Step-by-Step Guide > Step-by-Step Guide Introduction End Hierarchical Links
Step-by-Step Guide
  Step 1: Define the   Impairment
  Step 2: List Candidate   Causes
  Step 3: Eliminate
  Step 4: Diagnose
  Step 5: Compare   Strength of Evidence
  Step 6: Identify   Probable Cause
 
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Step-by-Step Guide Introduction  This image is a drawing of a caddisfly larva in its case. Caddisflies are aquatic insects that are used by biologists to monitor the environmental quality of streams.
Download Worksheets for Step 1
1.3. Results and Next Steps
 

At the conclusion of Step 1, you should have the following products (example products from Step 1).

  • A definition of the impairment or group of impairments that will be the focus of the investigation,
  • A definition of the specific effects that will form the basis for the analysis,
  • A description of the geographic extent, and
  • A statement of investigations objectives.

After you develop these products, proceed to Step 2, List Candidate Causes.

Continue to Step 2
Download Worksheets for Step 1
 

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