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

NYC 9/11 Public Portal Document

• 23 ' Central ventilation systems (coAt } 2ACHMENT A — SCOPE OF WORK

Dust/Dirt/Debris I Suspect kyTC-Relate Dust • Estimate % -of total dust loading Sys Light Heavy Component (<l/16 inch (Z I/16 inch Present? System components . Substrate Material None depth) • depth (•Y/N) Outside air intake louvers, grates and/or screens . Outside air duct'' • . Outside air amper(s Return air grilles' X Reou aiiplenum'. " Return air plenumarnper • Return airducts vanes • • 'Turning

Mixing chambers . -_ _ • Filter rack(s)' Filter banks/media Pre-heat coils Cooling coils R•e-eat coils Humidification .and/orair'cleaning • : • equipment . Fire dampers In- ine re-heat coils . Acoustical blower housing lining n .

Duct connectors Blower assembly including blower wheel', blower housing, air vanes, in- line noise attenuators, acoustical • treatments (e.g..bafiles, duct linings) . Condensate drain pan '

Condensate-accumulator . Supply.air plenum • . Supply aiip enum 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: o Unit cycled prior to inspection : Color ofDust/Dirt.Debris Filter loading '(general impression) Moa..,-t,4t.. Water damage Filter bypass (describe) Visible suspect mold growth Abraded/delarninated acoustical lining .Evidence bf animal incursion (carcasses, feathers, fecal matter) •

NYC-WTC 000132831