HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document 2i Mechanical Exhaust Svatem Visual Insnectinn Fnrm Paget nf I Mechanical Exhaust System Identification. 1= EJWkAUST VB Location' , PPER Area Served:

Associated mechanical room: clean_ j`Y N dry ~Y N stored chemicals/refuse Y .jN Surface Component System Components Dust/ WTC • not present [NOTE: if component not present (NP), not found (NF) or inaccessible (I) please Debris Dust • not found Indicate In last column] 1 Present? Present? • inaccessible Exhaust air outlet: Location:

Accessible for inspection? Y_/N (explain):

— louvers, grates and/or screens — outside air duct — outside air dampers) Exhaust fan unit: — blower assembly incl. blower wheel, housiing, air vanes, in-line noise attenuators — blower housing acoustical lining - vibration collars ' Exhaust air distribution: — Exhaust air ducts Est total In 8 t OD No. locations inspected D Specify type (circle): ( glass lined mew l fibrous glass board flex-duct — Accessible in-line fire dampers Est total qty, 9 No. locations inspected b — Accessible turning vanes Est. total qty No. locations inspected Ni' —Exhaust air grilles Est. total qty No. locations inspected vwcs 1.ekPo~u]):

Information:

General impression (indicate recommendations for cleaning based on finding of WTC dust): WTC £u ST WAS 0556 VEID iN T4 MECHANICAL CoMPONE- JTS AND ITS b,S~ vc t prr E-~ ?~uc?S.

-- Q —c-'-A i NF "is' R&too i K Lv'TC kcL4TeD 0 u 3T. HCC41AN I CAL CawPo1jE- jTS ©F 714 - ¶Prt J AND ir ASSDC-c ATEa i~c)c_TS N 'EI - r-o 'Bt CL~-fjE7

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

NYC-WTC 000135388