HVAC inspection form, Warren & [name], Nov 2002

NYC 9/11 Public Portal Document

2.3. " Central ventilation systems tcoATACHMENT A - SCOPE OF WORK

Dust/Dirt/Debris I Suspect WTC-Related Dust S Estimate % •of t6ral dust 1 loading System Light Heavy Component •(<l/16 inch (~ i/1 inch Present? System Components •. Substrate Material None depth) depth (Y/N) Outside air intake louvers, grates and/or screens X Outside air duct'• - • . Outside air dampers) Return air grilles' Returnn air"plenum'. Return air plenum damper Return air•ducts Turning vanes Mixing chambers '. Filter rack (s)' . Filter banks/media Pre-heat coils • Cooling coils Re-heat coils - Hurhidification.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' 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 -Low pressure —branches - Supply plenum or supply duct linings X . Supply.air duct damper(s) • Supply air diffusers • S .

Terminal-boxes Open•or•ducted passive ventilation . shaft(s) • . Other hnformatitin: Unit cycled prior to inspection _ Color ofDust/Dirt/Debris Filter loading (getterai impression) L, Water damage .. . ' Filter bypass (describe) Visible suspect mold growth Abraded,'delaritinated acoustical lining' ' Evidence of animal incursion (carcasses, feathers, fecal matter)

NYC-WTC 000132811