HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document

2.2 Mechaniral Fshaust System Visual Inspection Form Page 1 of I Mechanical Exhaust System Identification: , E-( vsi i5 ' Location: fZcc%f' Area Served: £'!'G. t ! k N iA A,N Associated mechanical room: clean Y N dry Y N stored chemicals/refuse Y N Surface Component System Components Dust/ WTC . not present [NOTE: if component not present (NP), not found (NF) or inaccessible (1) please Debris Dust . not found indicate In last column] Present? Present? , inaccessible Exhaust air outlet: Location:

Accessible for inspection? Y 'I N (explain):

— louvers, grates and/or screens — 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 hj P — vibration collars N P Exhaust air distribution: — Exhaust air ducts Est total In ft 1 U No. locations inspected Specify type (circle): znet fibrous glass lined metal masonxv fibrous glass board flex-duct — Accessible in-line fire dampers Est total qty No. locations inspected NP — Accessible turning vanes Est total qty No. locations inspected NP — Exhaust air grilles Est total qty_ jf _ No. locations inspected 4 1 Other (specify):

Other Information:

General impression (indicate recommendations for cleaning based on finding of WTC dust): n Ek1jAUSf 1J LON-T et;vF••gE-O wITN t~ I(, nstctaeeQ 0L4 E[ t~t ^ ED F01r, tJ RELRTED tUST, CLEA,WIN'C JOS frS -ASSC IVEM A)S7 FA~ L;Nrr AN7 M CL ~ J - ~4E F-Y,44 ~VG'TS•

KEY: NP = not present; NF = not found; I = inaccessible; V = unknown

NYC-WTC 000135528