HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document Ventilation System Identification: Page I of 2

rsovr=• cIR -s5p AtggNY STR.&S Area Served: r ssociated mechanical room: clean ENRt400SEr i Y N d r)' Y N stored chemicals/refuse Y N System Components Surface Component [NOTE: if component not present (NP), not Dust/ WTC • not present indicate in last column] found F) or Inaccessible (1) please Debris Dust • not found i Outside air intake: Present? Present? • Location: Inaccessible Accessible for inspection? Y V N (e~cplain): louvers, grates and/or screens outside air duct outside air damper(s) Air handling unit: — outside air n ing chamber — filter rack(s) — filter media — blower assembly incl. blower wheel, blower housin ,air vanes, in-line noise — blower housing acoustical lining attenuators

— pre-heat coils — heating coils — cooling coils — re-heat coils 2 — condensate drain pan — supply air plenum — supph air plenum damper(s) — vibration collars r Supply air distribution: NP — Supply air ducts Est. total In ft_ C No. locations inspected I Specify type (circle): eial &o1sRas lined e ao fibrous class board ex-du t mood , — Accessible in-line fire dampers Est. total qty—_ No. locations inspected C) — Accessible turning vanes Est. total qt5'__ ! No. locations inspected t) — 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 3p No. locations inspected____ Specify type (circle):~etal~brous Ylassli ned 'eia1 ma Y fibrous flex w Return air plenum Est. total RA plenum areas_ ! No. locations inspected { Y Return air plenum damper Est, total qty— No. locations inspected Accessible in-line fire dampers Est. total qty-__ i No. locations inspected_ Accessible turning vanes Est. total qty I No. locations inspected D T Return air grilles Est, total qty 1 No. locations inspected O 2

NYC-WTC 000135478