HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document `~ LW Ventilation System Identification: ----- - ` 3,.r Location: ' I Area Served: m,,, • - ' t ' 38..✓ IkcR 1 ACE l.L fi,t Associated mechanical room: clean_-[Y N thy Y N stored chemicals/refuse Y✓ N System Components Surface Component Dust/ WTC • not present [NOTE: if component not present (NP), not found (NF) 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 andlor screens Ni' — outside air duct , — outside air damper(s) f.' j Air handling unit: — outside air mixing chamber — filter rack(s) i — filter media — blower assembly ind. blower wheel, blower housing, air vanes, in-line noise attenuators — blower housing acoustical lining h — preheat coils Ni — heating coils — cooling coils — re-heat coils — condensate drain pan I h► — supply air plenum — supply air plenum damper(s) S 1.1P — vibration collars h }' Supply air distribution: —.Supply air ducts Est. total in ft 1# No. locations inspected Specify type (circle). ;metau fbrous lass lined met1 zaasonzy fibrous glass board er uct — Accessible in-line fire dampers Est. total qty No. locations inspected 'F — 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 Z No. locations inspected--J__— Return air distribution: — Return air ducts Est. total in ft No. locations inspected 2 - Specify type (circle): fibrous glass lined metal masonry fibrous glass board flex-duct — 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 — Return air grilles Ea total qty No. locations inspected J

NYC-WTC 000135508