HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document at~.lp visual Inspection r -orm • Ventilation.,System Identification: Page 1 of 2 ..

— Area Served: S~`:O Kct7pj` r t '~F}St I.Jj $Ieieacn ; S Associated mechanical room: clean,/ Y N dry /Y N stored chemicals/refuse Y N System Components Surface Component [NOTE: if component not present (NP), not found (N) or Dust/ WTC •. not present inaccessible (1) please Debris Dust indicate in last column] • not found Present? Present? • inarreasihin Anfeidn oi. ;s..Le. . _ _ __

Accessible for inspection? Yil'_N (plain): — louvers, grates and/or screens — outside air duct 7 N — outside air damper(s) Air handling unit: — outside air mixing chamber — filter rack(s) r — filter media — blower assembly incl. blower wheel, blower housing, air vanes, in-line noise attenuators ' — blower housing acoustical lining — pre-heat coils — heating coils — cooling coils — re-heat coils i — condensate drain pan ry i — supply air plenum S j. — supply air plenum damper(s) — vibration collars Supply air distribution: NP — Supply air ducts Est. total in ft vi} No. locations inspected,_ Specify type (circle): tQbris lass lined metal " masozy fibrous class flex-duct wo — Accessible in-line fire dampers Est. total qty c` — Accessible turning vanes Est total qty oG. No. locations inspected_ NF No. locations inspected J — In-line reheat/cooling coils Est total qty 0 _ No. locations inspected_Q_ — Supply air diffusers Est, total qty--66_ No. locations inspected_ Return air distribution: — Return air ducts Est. total in R 50 No. locations inspected Specify type (circle): eta fibrous glass lined meeW masomy fibrous glass board flex-duct ppd -t • !~1 — Return air plenum Est. total RA plenum areas L 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 p.1 Est. total qty No. locations inspected — Return air grilles Est. total qty No. locations inspected .7

NYC-WTC 000135516