23 Mechanical Make-up Air System Visual Inspection Form Page 1 of 2
Mechanical Make-up Air System Identification:
Location: Area Served:
Associated mechanical room: clean Y N dry Y N
stored chemicals/refuse Y N
Surface Component
System Components (if component not present, not found or inaccessible please DustZ WTC • not present
indicate) Debris Dust • not found
Present? Present? • Inaccessible
Outside air intake: Location:
Accessible for inspection? Y N (explain):
- louvers, grates and/or screens
- outside air duct
- outside air damper(s)
Make-up air handling unit:___________________________________________________
— outside air mixing chamber
- filter rack(s)
- filter media
- blower assembly inch blower wheel, blower housing, air vanes, in-line noise attenuators
- blower housing acoustical lining___________________________________________
- pre-heat coils____________________________________________________________
- heating coils________________________________________________________ ____
- cooling coils
- re-heat coils_________________________________________ __________________
- condensate drain pan
- supply air plenum________________________________________________________
- supply air plenum damper(s)_______________________________________________
- vibration collars_________________________________________________________
Make-up air distribution:
- Make-up air ducts Est.Total In ft No. locations inspected
Specify type (circle): metal fibrous glass lined metal masonry fibrous glass board
flex-duct wood
- Accessible in-line fire dampers Est. total qty No. locations inspected
- Accessible turning vanes Est. total qty No. locations inspected
- In-line reheat/cooling coils Est. total qty No. locations inspected
- Supply air diffusers Est. total qty No. locations inspected
Other (specify):
Inspection checklist for HVAC system components including mechanical room conditions, outside air intake accessibility, WTC dust presence, and component condition documentation.
Internal memo expressing concerns about advising residents of potential health risks from 15 months of unrealistic HVAC assessment and cleanup, requesting urgent decision-making.
Memo requesting EPA ensure factual information about HVAC matters be prepared for presentation at meeting with City officials, FEMA, and public communications consultant.