Section R. 325.17706 - Make-up air requirements generallyRule 706.
(1) In addition to the exhaust ventilation systems required by these rules, a supply of make-up air which is equal to or greater than the total air being exhausted from the building shall be provided to all type I, II, III, and IV establishments.(2) Regardless of the type of make-up air system selected, sufficient replacement air shall be provided to prevent a negative pressure condition within the building.(3) Make-up air intakes shall be remotely located from the general exhaust location so as to provide maximum personnel protection from exposure to solvent vapors.(4) The location of all make-up air systems and the flow direction of powered make-up air systems shall be approved by the department before installation.Mich. Admin. Code R. 325.17706