HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document A..A \.wau4a V caaauraluVu v iCm visual ausuccuuu rurm rave ■ of c Ventilation System Identification: } Y `

Location: Area Served: ~Dk -- 1 ~'t.Oo~ t'V to It' FL 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 Outside air intake: Location:

Accessible for inspection? Y / ' N (explain):

— louvers, grates and/or screens — outside air duct . — outside air damper(s) N Air handling unit: — outside air mixing chamber N — filter rack(s) — filter media — blower assembly incl. blower wheel, blower housing, air vanes, in-line noise attenuators (J — blower housing acoustical lining — pre-heat coils NF — heating coils — cooling coils NF — re-beat coils — condensate drain pan — supply air plenum — supply air plenum dampei(s) — vibration collars Supply air distribution: — Supply air ducts Est. total In ft L t No. locations inspected__ Specify type (circle): metal fibrous asc ' ed a masonry fibrous glass board

flex-duct w

— Accessible in-line fire dampers Est. total qty No. locations inspected /V NP = Accessible turning vanes Est. total qty No. locations inspected 1 — In-line reheat/cooling coils Est. total qty No. locations inspected — Supply air diffusers Est. total qty I " No. locations inspected_ Y Return air distribution: — Return air ducts Est. total In ft No. locations inspected Specify type (circle): et fibrous glass lined metal ynason:v fibrous glass board flex-ductwo — Return air plenum Est. total RA plenum areas No. locations inspected — 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 — Return air grilles Est. total qty No. locations inspected

NYC-WTC 000135484