HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document 2.1 Central Ventiatinn Svctea icnsal Tncna.rfinn Fnrm fl--- ' Ventilation System Identification: c5 OF 8 Location: Area Served: . , ccôç LD — 3bb A1440 SCR. L. p DS Associated mechanical room: clean_LY N dry~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 (I) please Debris Dust indicate in last column] • • not found 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) 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 — blower housing acoustical lining — prebeat coils — heating coils — cooling coils — re-heat coils — condensate drain pan — supply air plenum — supply air plenum damper(s) — vibration collars N P Supply air distribution: — Supply air ducts Est. total In ft Q No. locations inspected__ Specify type (circle): m l lass ' ed zasozuv bus alas board flex-duct w — 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 j. Return air distribution: — Return air ducts Ea total in ft No. locations inspected I Specify type (circle) fibrous glass lined metal gahs y fibrous glass board flex-duct - ls — Return air plenum Est total RA plenum areas I No. locations inspected ! — Return air plenum damper Est total qty No. locations inspected — Accessible in-line fire dampers Est. total qty N No. locations inspected — Accessible turning vanes Est total qty No. locations inspected — Return air grilles Est total qty No. locations inspected

NYC-WTC 000135454