We must inform the applicant or permit holder of the nature of the allegation(s) by the next workday following the first on-site investigation unless we have reason to believe that the investigation may be compromised. If we believe the investigation may be compromised, the investigator may postpone explaining the nature of the allegation(s). We must inform the appropriate person(s) of the nature of the allegation(s) as soon as we decide that our doing so will not compromise the investigation.