HVAC duct inspection report, 261 Water Street, Nov 2002

NYC 9/11 Public Portal Document . •tea. .. •;E,•,. 2.3 Central entilation s}•stems' (coAt •TACH1\'IENT A— SCOPE OF WORK

DustlDirt/Debris Suspect WTC-Related Dust Estimate %•of total dust loading System Light Heavy Component '(<1/16 inch (k 1116 inch Present? System Components Substrate Material None .. depth) depth (Y/N) Outside air intake louvers, grates and/or screens •.

Outside air duct' ( • Outside sir,damperrs) `~• Return air grilles Return air plenum" Return air plenurn damper Return air ducts Turning arses Mixing chambers ' Filter rack(s) :. f Filter banks/media Pre-heat coils Cooling coils Re-heat coils Hu,hidifrcation.andlor air'cleaning equipment Fire dampers In-line re-heat coils Acoustical blower housing lining •. S Duct connectors Blower assembly including blower • wheel, blower housing, air vanes, in- _. .- line noise attenuators, acoustical . treatments (e.g. baffles, duct linings) Condensate drain pan Condensate accumulator Supply air plenum Supply air'plenum damper(s) Supply air ducts .. -High pressure -.main trunk - •• S I I -Low pressure— blanches 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 prior to inspection I Color of Dust/Dirt/Debris Filter loading (general impression) v A t. - Water damage ❑ Filter bypass (describe) ❑ Visible suspect mold growth Abradedldelarrinated acoustical lining ' ❑ Evidence of animal incursion (carcasses, feathers, fecal matter)

NYC-WTC 000115035