HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document -•-"• ~~_ ~axiaus ysie rtsual Inspection Form M+ Exhaust System Identicetion Pane 1 of 1 • AMtcAz x4e4us 7"f ArN -- J e o AL8h, Area Served: ,1U77' Aséoclated mechanical room: clean_y N dry Y N stored chemicals/reft e Y N System Components Surface Component [NOTE: If component not present .'P , not found (NF) Dust/ WTC • not present ) or inaccessible (I) please ' Debris Dust Indicate In last column) . not found Present? Present? Exhaust air outlet: Lo on: • inaccessible

Accessible for inspection? Y V N

— louvers, grates and/or screens (explain): I outside air duc t outside air damper(s) Exhaust fan unit: y — blower assembly incl. blower wheel, housing, air vanes, in-line noise attenuators — blower housing acoustical lining — vibration collars S~ Exhaust air distribution: JF — Exhaust air ducts Est total in ft 3.0 O No. locations inspected t Specify type (circle): 7 ; l s d e fibrous ¢ladsbo4 -i 1 — Accessible in-tine ;fire dampers Est, total qty No. locations inspected —Accessible turning vanes Est. total ~' No. locations inspected NP —Exhaust air grilles Est. total ` a NP --~ -- No. locations inspected Other (specify):

Other

General Impression (indicate recommendations for cleaning based on finding of WTC dust): "" WTC LAT l) 1)u.S-r WAS ®B5E -VED ti 111€; "N A7JO 17s cfl 2 1 r7 ,A N4~1 fT 9 -th~ vc7S.

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KEY: 10 a not present; NF = not found; 1= inaccessible; J - unknown

NYC-WTC 000135428