In SC the local Sheriff is notified of your application for a CWP and has 7 days to eitehr approve or deny it. If the Sheriff wants to deny it he notifies SLED and they follow up on it. If the Sheriff doesn't respond at all then it is approved. This is one reason for the slow turn-around for SC permits as very few applications are ever looked at by the local Sheriff so it takes the full time.
Use to be they had 30 days.