HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document ,,~ .vc ,caasiw uta}~ca asvu r ~sachani Ernst System Idenfificaion: —'~ 1of1 E04AMICltL rVMaucy Area served: — J'''{ f i N '~2e9~ ..- j o o At art Ny FT Associated mechanical room: clean Y N dry Y N stored chemicalshefase Y N System Components Surface Component {NOTE: if component not present (l1'P), net found (Ni) or I Dust/ WTC • not Present inaccessible (I) please 'I Present? Debris Dust indicate in last column] Present? • not found Exhaust air outlet: • LntAtinn• • inaccessible

Accessible for inspection? Y V N (exlain):

— louvers, grates and/or screens — outside air duct — outside air damper(s) Exhaust fare unit: — blower assembly incl. blower wheel, air vanes, in-line noise attennators — blower housing acoustical lining vibration collars )JP -auutuai air crrstrlo11uon: 2J F — Exhaust air ducts Est total In ft .'1.0 O No. locations inspected 1 - ! Specify type (circle):' ~~ 7as d e i 3s flans board fits Accessible in-line fire dampers Est total qty A No. locations inspected - Accessible turning vanes Est. total qty No. locations inspected -Exhaust air grilles Este total qiy~ No. locations inspected Cl '2

Information:

General impression (indicate recommendations for cleaning based on finding of W'I'C dust): --tAJrc E TaD DUST YUAS ot5EAVED rlv?f/E ts4N AO t75 &WPB +7t>iu"ts, AN,6 i'("3 AS -4 Oasis-

-- 0. LE c, s , 2Fgor€ foR WTL WJ7Eb rDusT. AN , ITS CioMQDNSTS ,N.n rrs -- C.t.£I,tJ -r4{E EXKAu Wt ASso4R'~'~ DLC7S.

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

NYC-WTC 000135430