HVAC inspection report cover letter, Dec 2002

NYC 9/11 Public Portal Document

Ventilation System Identification: WV- cio.cwc'l Location: m,p ~ M — 2 K ct-90 lMea Served: Zvi „ « k 4 Luu bU~ u.( Mechanical room: c can Y N dry Y N stored chemicals/refuse YEN Access adequate for inspection of components: AHU interior surfaces are visibly accessible: TS

Dust/Dirt/Debris I Suspect WTC-Related Dust Estimate % of total dust loading System Light Heavy Component (<1/16 inch (2 1/16 inch Present? System Components Substrate Material None depth) depth (YIN) Outside air intake louvers, grates and/or screens Outside air duct Outside air damper(s) Return air grilles i to ic. Return air plenum ~C Return air plenum damper Return air ducts sk ee _w.et'a Turning vanes 1nC0 Mixing chambers Filter rack(s) S Nlfl Filter banks/media i' Pre-heat coils ccpec_?Mvit. x Cooling coils Re-heat coils Humidification and/or air cleaning equipment Fire dampers In-line re-heat coils Acoustical blower housinglining Duct connectors Blower assembly including blower wheel, blower housing, air vanes, in- line noise attenuators, acoustical a 11'' treatments (e.g. baffles, duct linings) !'( pit Condensate drain pan Condensate accumulator Supply air plenum Supply air plenum damper(s) Supply air ducts p wie L -High pressure - main trunk -Low pressure — branches Supply plenum or supply duct linings Supply air duct damper(s) Supply air diffusers Terminal boxes Open or ducted passive ventilation shaft(s) Other Information: Unit cycled rior to inspection Color of Dust/Dirt/Debris 'gLA Filter loading (general impression) i' N Water damage NONE 1Q Path Filter bypass (describe) Visible suspect mold growth IJoN `0 Abraded/delaminated acoustical lining Evidence of animal incursion (carcasses, feathers, fecal No matter) ))oNE 086E 't7

NYC-WTC 000117568