Ventilation System Evaluation Form, Nov 2003

NYC 9/11 Public Portal Document

2.2 Mechanical Exhaust System Visual Inspection Form Paee 1 of 1 tnecnanicat txnaust system Joenttttcatton: 1v1 Location: Area Served: c Associated mechanical room: clean Y N dry Y N stored chemicals.irefuse . Y N Surface Component System Components Dust/ %NITC • [NOTE: if component i tbt present (NP), not found (NF) or inaccessible (I) please 4 not Debris Dust present indicate in last column] Present? Present? not found

Inaccessible Exhaust air outlet: Location:

Accessible for inspection? Y, ' N (explain): `•'

louvers, grates and/or screens A) P outside air duct outside air damper(s) Exhaust fan unit: blower assembly incl. blower wheel, housing, air vanes, in-line noise attenuators blower housing acoustical lining vibration collars Exhaust air distribution: Exhaust air ducts Est total In ft bro No. locations inspected Specify type (circle): metal fibrous Blass lined metal masonry fibrous class board flex-duct ood Accessible in-line fire dam ers Est. total No. locations ins ected Accessible turning vanes Est. total • No. locations inspected Exhaust air illes Est. total No. locations ins ected Other (specify):

Other Information:

General impression (indicate recommendations for cleaning based on finding of R'TC dust):

KEY: NP = notpresent; NF = not found;' I = inaccessible: U = unknown

NYC-WTC 000132743