HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document Ventilation System Identificatio 1012

Area Served: COPT DDW LD I Associated mechanical room: N thy Y N stored chemicals/refuse System Components [NOTE: if component not present (NP), not found (NP) Dust/ WTC • not present or inaccessible (1) please Debris Dust indicate in last column] • not found Present? Present? Outside air intake: I~catinn• • tnaccesiihif

Accessible (of inspection? Y_ N (explain):

— louvers, grates and/or screens — outside air duct — outside air damper(s) Air handling unit: — outside air mixing chamber — filter rack(s) — filter media — blower assembly incl. blower wheel, blower housing, air vanes, in-line noise attenuators housing acoustical lining t coils 5he coils coils coils ate drain pan ir plenum — supply air plenum damper(s) — vibration collars Supply air distribution: N — Suppl air ducts Est. total In ft $O No. locations inspected 2 Specify type (circle): eta ' fibrous ed to >' fibrous Class board flex-ductwed — Accessible in-line fire dampers Est. total qty No. locations inspected — Accessible turning vanes Est total qty. No. locations inspected —In-line reheat/cooling coils Est. total qty—„ No. locations inspected — Supply air diffusers Est. total qty — No. locations inspected" Return air distribution: — Return air ducts Est. total In ft _ 0 No. locations inspected 2. Specify type (circle): eta brows masonjy fibrous class board ex w A' — Return air plenum Est, total RA plenum areas ( No. locations inspected 1 /~! — 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 3 No, locations insnected I

NYC-WTC 000135488