Measure 3: Makeup and Transfer

Measure 3: Makeup and Transfer Air Requirements Members of CAL OSHA who attended stakeholder meetings expressed concerns about maintaining minimum ventilation in kitchens in system designs that use high rates of transfer air usage approaching 100%. If kitchen ventilation is provided via 100% transfer air from other spaces, the air handlers serving those spaces must include enough outside air to serve the kitchen too. Otherwise, ventilation shall be provided via direct makeup air units. It remains the designer’s responsibility to ensure ventilation is provided.  This is stated explicity in the following section of Title 24: EXCEPTION to Section 121(b)2: Transfer air.  The rate of outdoor air required by Section 121(b)2 may be provided with air transferred from other ventilated spaces if:  A. None of the spaces from which air is transferred have any unusual sources of indoor air contaminants; and  B. The outdoor air that is supplied to all spaces combined, is sufficient to meet the requirements of Section 121(b)2 for each space individuall