HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document

2.2 Mprhaniral F4hanct Cvctnm Visual Ineneetinn Fnrm Pane 1 of I Mechanical Exhaust System Identification: E-1c 4\v$1 1 s Location: Area Served £!v 2c •,t4 .r. 1-+A-4 1Zc f 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):

— Iouvers, 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 N7 — vibration collars N P Exhaust air distribution: — Exhaust air ducts Est. total In ft I U No. locations inspected Specify type (circle): zne al €sass me >masonrv fibrous glass board Y — Accessible in-line fire dampers Est total qty No. locations inspected til p — Accessible turning vanes Est. total qty No. locations inspected t V — Exhaust air grilles Est. total qty 1.. No. locations inspected 1 Other (specify):

Other Information:

General impression (indicate recommendations for cleaning based on finding of WTC dust):

r' -0M E k f IA vc-T H 1J OT ec:v t-9 CO LZ iT ( t'sJ %C lv t ax P ~•

CLEANIN)C'' ,~ e Pw e1 Foy W-TC RELATED 'DuST# lJ oNr AN7M frS ASYCOO tM F-;<""S7 CZEA~1J 'T:qF vG"CS•

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

NYC-WTC 000135528