Micron Building #1X - Install (SOD) Bulk Chemical Feed System * To install an 8" diameter fume exhaust duct from Drum Unload Room #107D to an existing 14" diameter fume exhaust duct above Cooridor #100J. This new 8' duct will be continuously wrapped with a two-hour fire-resistive rated #M Firemaster duct wrap. The duct will be protected with a fire sprinkler quench system at the pentration of the two-hour fire barrier wall. This quench system is an approved alternate to the required shaft enclosure approved by the Building & Fire Department (see copy of attached alternate approval). All construction per the approved plans. #04-304/JCM