1. Choose chronic or subchronic RfDs and RfCs.
2. Select contaminants.
Type the desired contaminant name(s), synonym(s), or CAS number(s) in the box.
To remove a selected contaminant, click the "x" to the right of the contaminant name.
3. Click "Retrieve."
4. Input soil concentrations.
Enter soil concentrations for each selected contaminant.
5. Review Equations and Parameters.
Select either the "VF Unlimited Reservoir Equation - Method 1" equation or "VF Mass Limit Equation - Method 2" equation.
If using the "Method 2" equation, the source depth(s) will need to be supplied.
6. Click the "Retrieve" button to calculate results.
7. Review and export Results.
In order to save a dated copy of all input parameters and the site-specific PRG results, choose from the following options:
Click "Output to Spreadsheet" to save in spreadsheet (.xls) format.
Click "Output to PDF" to save in PDF (.pdf) format.
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