HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document 4.1 • ..antes ven'MnOn Jester. renal Inenortinn Fnrm D.. I .P7 Ventilation System Identifi

Location: . y~ M A~ ' tar C oC1N — fl Stiff '" r(N~'ST A Associated mechanical room: clean Y N dry Y N stored cbemic alshefuse Y N Surface Component System Components Dust( WTC • not present [NOTE: If component not present (NP), not found (NP') or inaccessible (1) please Debris Dust Indicate in last column] • not found Present? Present? • Inaccessible Outside air Intake: Location:

Accessible for inspection? Y ✓ N (explain):

— louvers, grates and/or screens — outside air duct — outside air damper(s) ~. Air handling unit: — outside air mixing chamber — filter racks) — filter medra — blower assembly incl. blower wheel, blower housing, air vanes, in-line noise attenuators — blower housing acoustical lining — pre-heat coils — heating coils — cooling coils — re-heat coils ¼ 1 — condensate drain pan — supply air plenum — supply air plenum damper(s) — vibration collars Supply air distribution: ~,.' — Supply air ducts Est. total In ft No. locations inspected`,__, Specify type (circle): Iass lined raasomv sous xlass board

— Accessible in-line fire dampers Est total qty No. locations inspected I Y — Accessible turning vanes Est total qty No. locations inspected h E — In-line reheat/cooling coils Est. total qty No. locations inspected ! P Supply air diffusers Est. total qty I . No. locations inspected_ W ; . . Return air,distribution: A — Return air ducts Est. total In ft________ , No. locations inspected__, Specify type (circle): m fibrous glass lined metal maacniv fibrous mass board

flex-ductw — Return air plenum Est. total RA plenum areas I No. locations inspected_ j_ ~! — Return air plenum damper Est. total qty No. locations inspected — Accessible in-line fire dampers Est. total qty No. locations inspected — Accessible turning vanes Est total qty No. locations inspected h;F — Return air grilles Est. total qty I_ No. locations inspected— y y

NYC-WTC 000135446