HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document 2.1 Central Ventilation System Visual Tnsnertinn Fnrm D....e I Ventilation System Identification: Y- RANE Location: Area Served: Z50 So nlll / S E, H E N T SAS Ei-t EN -r Q Oof-I 4. A ^ Associated mechanical room: clean, Y N dryyY N stored chemicals/refuse Y_ /N Surface Component System Components 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 y — outside air damper(s) Air handling unit: — outside air mixing chamber ( 'Si

— filter rack(s) — filter media — blower assembly Incl. blower wheel, blower housing, air vanes, in-line noise attenuators — blower housing acoustical lining — pre-heat coils — heating coils P — cooling coils N iv — re-heat coils — condensate drain pan N? — supply air plenum — supply air plenum damper(s) — vibration collars P Supply air distribution: - Supply air ducts Est. total In ft 2V0 No. locations inspected 3 Specify type (circle): eta fibrous glass lined metal masoxuy fibrous glass board e. -duct w !Y — Accessible in-line fire dampers Est. total qty j. No. locations inspected i. — Accessible turning vanes Est. total qty 1 No. locations inspected i'J — In-line reheat/cooling coils Est. total qty No. locations inspected — Supply air diffusers Est total qty , No. locations inspected 2 _ Return air distribution: — Return air ducts Est. total in ft No. locations inspected Specify type (circle): eta, fibrous glass lined metal masonry fibrous glass board flex-duct wood — Return air plenum Est. total RA plenum areas 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 Est. total qty No. locations inspected — Return air grilles Est total qty No. locations inspected ,

NYC-WTC 000135548