HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document • 2.1 ' Central Ventilation System Visual Form Ventilation System Identification: 1 of 2 i4 =T0 -A NE - Location: Area Served:/ 250'o t (l1 o v roi' a~ Ct_C-yuroP. 'rc ao H Associated mechanical room: clean 7vi_,_~_xdrLY N stored chemicals/refuse y_y System Components Component [NOTE: if component not present (NP), not found (NF) or Dust/ WTC • not present inaccessible (1) please Debris Dust indicate in last column] • not found Present? Present? • inacceceihik Outside air intake: Lne Linn•

.Accessible for inspection? Y__V"N (explain):

— louvers, grates and/or screens — outside air duct — outside air damper(s) Air handling unit: NP — outside air nuxing chamber — filter rack(s) — filter media — blower assembly inci. blower wheel, blower housing, air vanes, in-line noise attenuators — blower housing acoustical lining — pre-heat coils — heating coils — cooling coils — re-heat coils — condensate drain pan — supply air plenum N — supply air plenum damper(s) — vibration collars Supply air distribution: — Supply air ducts Est. total In ft_ No. locations inspected 1. Specify type (circle): eta fibrous glass lined metal ntaso y fibrous Wass board flex-duct — Accessible in-line fire dampers Est, total qty No. locations inspected — Accessible turning vanes Est, total qty NP No. locations inspected — In-line reheat/cooling coils Est. total qty NP No. locations inspected — Supply air diffusers Est, total qty1_ No. locations inspectedi_ Return air distribution: — Return air ducts Est. total in ft ~ No. locations inspected l Specify type (circle): >ne I fibrous glass lined metal masomy fibrous lss board flex-duct w~ — Return air plenum Est. total RA plenum areas 1 No. locations inspected 1 N — Return air plenum damper Est total qty No. locations inspected_ I — Accessible in-line fire dampers Est total qty No. locations inspected — Accessible turning vanes Est total qty No. locations inspected — Return air grilles Est. total qty I No. locations inspected

NYC-WTC 000135540