In addition to those listed in 2 CFR 180.995, other examples of individuals who are principals in EPA covered transactions include:
Principal investigators;
Technical or management consultants;
Individuals performing chemical or scientific analysis or oversight;
Professional service providers such as doctors, lawyers, accountants, engineers, etc.;
Individuals responsible for the inspection, sale, removal, transportation, storage or disposal of solid or hazardous waste or materials;
Individuals whose duties require special licenses;
Individuals that certify, authenticate or authorize billings; and
Individuals that serve in positions of public trust.