HVAC and environmental inspection report, Dec 2002

NYC 9/11 Public Portal Document 1 Ak Po rL ck JP Roo - Motj cL. — TflP s 'c_ Location Area Served: PC2 14tr Mechanical room: clean-jY N dryyY N stored chemicals/refuse Y N Access adequate for inspection of components: yE 1 M AHU interior surfaces are visibly accessible: G

Dust/Dirt/Debris I Suspect WTC-Related Dust Estimate % of total dust loading. System Light Heavy Component (<I/16 inch (z 1/16 inch Present? System Components Substrate Material None - depth) depth (Y/N) Outside air intake louvers, grates and/or screens - %t Outside air duct Outside air.damper(s) Return air grilles Return air plenum • Return air plenum damper Return air ducts Turning vanes Mixing chambers '. Filter rack(s) Filter bankstmedia v Pre-heat coils Cooling coils Re-heat coils Humidification and/or air'cleaning equipment Fire dampers I In-line re-heat coils Acoustical blower housing lining '. Duct connectors Blower assembly including blower wheel, blower housing, air vanes, in- line noise attenuators, acoustical treatments (e.g. baffles, duct linings) V~~ Condensate drain pan Condensate accumulator Supply air plenum Supply air plenum damper(s) Supply air ducts -High pressure - main trunk -Low pressure — branches Supply plenum or supply duct linings £vf4 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 of Dust/Dirt/Debris Filter loading (general impression) D Water damage .,u A Filter bypass (describe) • Visible suspect mold growth t., Abraded'delantinated acoustical lining Evidence of animal incursion (carcas es, feathers, fecal matter) 1.3 4

NYC-WTC 000117454