The simple answer is yes, we can use ACGIH TLVs or NIOSH RELs to calculate the Maximum Use Concentration (MUC), but with one ABSOLUTE regulatory caveat: The resulting limit must be more protective (stricter) than what the OSHA standard dictates, or be applied to a chemical that OSHA does not currently regulate.
Under 1910.134(b), OSHA explicitly defines the MUC mathematical formula using its own limits: