Ventilation System Evaluation Form, WTC Site, Feb 2003

NYC 9/11 Public Portal Document

2.1 Central Ventilation stem Visual Inspection Form Ventilation System Identification' Pa e 1 of 2 Location: Lo& • !ilea Jervea: Assoc►atedmechanicaI room: clean y N dry Y N stored chemicals/refuse }' N System Components Surface f NOTE: if component not present (NP), Component not found (NF) or inaccessible WTC S not indicate in last col umn j (I) please Debris Dust Present? I present Present? not found Outside air intake: Location: inaccessible Accessible for inspection? Y N (explain): (w iou Ners, grates and'or screens outside air duct Np outside air dam er(s) NP Air handling unit: N, outside air•nuxing chamber filter rack(s) N filter media blower ass:cubl.y Incl. blower Wheel, blower housing, air panes, in-hue noise attenuators blower housing acoustical lining re -heat coils heating coils cooling coils re-heat coils ti conde; cafe drain an Nn su 1 'air lenum N su 1 • airplenum dam er(s) : %J vibration collars 1 Supply air distribution: N ~ Supply air duds Et. total In ft No. locations inspvc!e d 1)) Specify type (circle) meta ~brous Blass tined met masonry fi brous ¢lass board

Accessible in -line fire dam ers Est. total No. locations ins eeted Y "J Accessible n►rning vanes Est. total In-Ii7f' reheat'coolin_• co:'.. No. locations ins ected Es . total ; No. locations ins ected N Su lv air diffusers Est. total No. locations ins ected Return air distribution: Return air ducts Est. total In ft No. locations inspected Specif)•'t)pe (circle): metal fibrous class lined metal masonry fibrous glass board flex -duct Wood y N Refer air plenum Es t. total RA e plenum areas locations ins ected N o. Return air plenum damper Est. total qty Al ins ected No. locations Accessible in-line fire dampers Est. total qt}' AJ locations inspected No. Np

NYC-WTC 000133684