The Template What-If / Checklist worksheet used to guide PHA Studies has been modified.

  1. The Identification and Review of Past Incidents section has been renumbered with some new questions concerning the performance of the Incident Investigation element added before the example / industry What-If incident questions.
  2.  We’ve added a new 57-question Revalidation Considerations Checklist to the current list of What-If questions. This new section is to be used as an additional check on PHA revalidations.

These changes are available immediately to anyone using the Google Shared Drive.

Note: These additions are partially based on an EPA-provided example of typical questions asked during a PHA revalidation. It has always been our practice to FULLY revalidate the PHA by reviewing all the previous answers; however, during a revalidation, this new section should help highlight areas of the existing PHA study that demand extra attention.