Dust/Dirt/Debris Suspect WTC-Related Dust
Estimate % of total dust
loading
System Light Heavy
Component (<1/16 inch (2 1/16 inch Present?
System Components Substrate Material None depth) depth (YIN)
Outside air intake louvers, grates
and/or screens % 0%
Outside air duct
Outside air damper(s) iWt
Return air grilles 4II 4.
Return air plenum
Return air plenum damper
Return air ducts yt
Turning vanes
Mixing chambers
Filter rack(s) ,ni K
Filter banks/media
Pre-heat coils ,c
Cooling coils
Re-heat coils
Humidification and/or air cleaning
equipment
Fire dampers
In-line re-heat coils
Acoustical blower housing lining i isiQ
Duct connectors
Blower assembly including blower
wheel, blower housing, air vanes, in-
line noise attenuators, acoustical
treatments (e.g. baffles, duct linings) p •m~
Condensate drain pan
Condensate accumulator
Supply air plenum
Supply air plenum damper(s)
Supply air ducts '4.
-High pressure - main trunk
-Low pressure — branches
Supply plenum or supply duct
linings X
Supply air duct damper(s) Vie A , A,,,:j•dv yt
Supply air diffusers
Terminal boxes
Open or ducted passive ventilation
shaft(s)
Other Information:
Unit cycled prior to inspection 0 Color of Dust/Din/Debris
Filter loading (general impression) Water damage o
O Filter bypass (describe) Visible suspect mold growth D
Abraded/delamtnated acoustical lining , t Evidence of animal incursion carcasses, feathers, fecal
J matter) IV
NYC-WTC 000117578
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000117578Source: NYC Law Department, mirrored locally