HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document Jruzv 1 oI 1 ...wnswu a.;fl•U U & O."MAU laeniiucaon: - --- ~ 7 ' ECH AMI CAL xis *-N Location: Served: Associated mechanical room: clean Y N dry Y N stored chemicalshrefuse Y N System Components Surface Component

[NOTE: if component not present (NP), not found (NF) or inaccessible (1) please Dust/ WTC • not present 'Debris Dust • not found indicate in last column) Present? Present? • ina Exhaust air outlet: not f and Location: Accessible for inspection? Y V N (explain):

— louvers, grates and/or screens — outside air duct — outside air damper(s) Exhaust fen unit: — blower assembly inci. blower wheel, housing, air vanes, in-line noise attenuatars — blower housing acoustical linirRg — vibration collars Exhaust air distribution: T? P — Exhaust air ducts Est. total In ft 10O No. locations inspected 1 Specify type (circle): lass i wry

Y :y fibrous siuss board

— Accessible in-line fire dampers Est., total qty No locations inspected ! — Accessible turning vanes N? Est. total qty No. locations inspected NP —Exhaust air grilles Est. total qty No. locations inspected C) Other (specityy).

Other Information;

General impression (indicate recommendations for cleaning based on finding of Vi'TC dust): tATC rELAD DuS-r Was 0135 AV£D to'?f(ir MN AXLD 1TS cfl P~= ff uc'S.

i3 2qoM fR Wit 7—ELJM' 7)uST. ITS _oH?oPE&?S AN.O ITS - C4.E J -r4{ t t os i $ Sbee ?Duc7S.

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

NYC-WTC 000135432