Can I hire both union and non-union performers for my SAG-AFTRA New Media covered production?

All Principal Performers and the first ten (10) Background Actors per day must be covered under a SAG-AFTRA contract. If within reason you need to hire a non-union member for any covered role, you must submit a Taft-Hartley report, within 15 days of the first date worked, stating your reason for hiring that performer over a union Performer.