Trident Technical College issued the following announcement on August 18.
Effective Aug. 18, 2021, masking is required for everyone, regardless of vaccination status, while indoors on campus. Masks are not required outside or when individuals are alone in their offices or work spaces. This policy is subject to change at any time based on changes in transmission rates in our area and guidance from federal and state health agencies. The college strongly encourages unvaccinated employees and students to get vaccinated as soon as possible to protect themselves and others.
Original source can be found here.