1. Enter a Project Title.
If you choose to, type a name for your project into the "Project Title" box.
This title will be applied to the results.
2. Select Chemicals.
Select one or more chemicals of interest by clicking in the box and typing the name or CAS number, or by scrolling and clicking to add. To add a chemical not in the list, type the name and click the add button.
Select an entire category of chemicals by clicking one or more options in the "Or Select by Category" list.
Check the "ALL" box to select all chemicals in the database (not recommended; computation time will be affected).
3. Select PRG Type.
Choose either "Defaults" (calculations use default toxicity values, chemical-specific parameters, and exposure parameters) or "Site-Specific" (edit exposure parameters or, if "User-Provided" is selected, also edit toxicity values and chemical-specific parameters after clicking Retrieve).
4. Select RfD/RfC Type.
Select Chronic or Subchronic for RfD/RfC Type. Chronic retrieves chronic-only RfDs/RfCs. Subchronic retrieves subchronic values (where possible) and then uses chronic values.
5. Click the "Retrieve" button.
After clicking "Retrieve" for "Defaults", results will be presented. If "Site-Specific" was selected, edit exposure parameters (for "Database Hierarchy Defaults") and default toxicity values and chemical-specific parameters (if "User-Provided" was selected) in the next window, then click "Retrieve" again.
Press "Clear" at the bottom of the page to reset all parameters to default values.
6. Review and Download Results.
Input parameters and PRGs for each selected media are presented.
At the top of the final page are options to "Output to XLS" and "Output to PDF".
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