Air duct cleaning inspection report, 75-79 [name], November 2002

NYC 9/11 Public Portal Document

• Dust/Dirt/Debris • Suspect YTC•Re sled Dust • r' - .. stimate % of total dust • loadins • System :'~ Light Heavy Component • '(<1/16 inch (z 1116 inch Present? •. System Components Substrate Material None , depth) depth (TIN) , Outside air Intake louvers, grates and/or screens Outside airduct' .Outside au~damper(s) Return air grilles' ' Return air'plenum'. " Return air plenum damper • Return air• ucts Turning vanes Mixing chambers • Filter racks) ; Filter banks/media Pre-heat coils • Cooling coils Re-heat coils ' Humidificationa ' torair'cleaning • .e uipment a Fire dampers • • . In-line re-heat coils.. Acoustical blower housing lining Duct cohnectors Blower assembly including blower ., wheel, blower housing, air vanes, in- ._. . line noise ?ttenuators, acoustical' ' treatments (e.g, baffles, duct linings) Condensate drain pats ' ' Condensate'accumulator ' ' . Supply air p enum • . • . Supply air'plenutri dampers) Supply air ducts -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 prior to inspection : • Color ofDust/Dirt/Debris Filter loading '(general impression) Water damage •. S ' Filter bypass (describe) • Visible suspect mold growth Abraded/deIarainated acoustical lining .Evidence of animal incursion (carcasses, feathers, fecal matter) • •