Summer Process Engineering (PE) and Industrial Health & Safety Internship (ISEP) Interview

Brother has an interview with AZ in Arizona for a master's level intership and is being considered for either a PE or ISEP position. Any advice/insights into what might be expected for the interview, he is ChemE undergrad and MatSci master's. Was also wondering what the hourly rate + total intern compensation was and if its higher than the undergraduate level which seemed to be quoted around $45/hr.

Appreciate the insights