Ventilation System Evaluation Form, WTC Site, Feb 2003

NYC 9/11 Public Portal Document

2.1 Central Ventilation System Visual Ins ection Form Ventilation System Identification: (•d• . A e I of 2 Location: Lo& V(.- Area Served. V Rgov _ /14, Associatedmechanical room: clean y L(3 N d Y N stored chemicals.'refuse V N System Components Surface Component (NOTE: if component not present (NP), not Dustl WTC l; found (NF) or inaccessible (I) please not indicate in last column] Debris Dust I present Present? Present? not found Outside air intake: Location: inaccessible Accessible for inspection? y 1\ (explain): O1, lou •ers, crates and'or screens outside air duct A outside air dam er(s) Air handling unit: outside air nuxin~ chamber filter rack(s) filter media blowerassru~bly• ircl. blower wheel, blower housing,- air t- noise attenuators ` arses, in -line blower housing acoustical lining .re -heat coils heating coils cooling coils re -heat coils cende Sate drag an su 1 y air lenum su I y airplenum dam er(s) vibration collars Supply air distribution: S~.:pp]v r _ air d -a F t. rota! 1, ft No locations insp..!ed Specify type (circle) metal fibrous ¢lass lined met masons fibrous Elass board

Accessible in -lint fire dam ers Est. total No. locations inspected Access ible`ntrnin vanes Est. total In,-!ire rzheat'coolin co'!; No. locations ins ected Es'. to al qv N J. ,'OcaZions inspected .. Su lv air diffusers Est. total Return air distribution: No. locations ins ected Return a,ir ducts Est. total In ft No. locations inspected-___J_ Specifl type (circle); metal • fibrous class lined metal masons fi brous ¢lass board flea -duct od Return air plenum Est. total RA plenum areas_ No locations ins ecred Return air plenum damper Est. total qty No. locations ins ected Accessible in-line fire dampers Est. total qty locations inspected 1\0

NYC-WTC 000133685