NYC 9/11 Public Portal Document
How many windows are still broken?
L. Distance from sample location to closest broken/open window (feet)
NA
M. Which side of the building is this window?
Side 1 Side 2 Sides Side 4 Other Side ( 3
N. Is there an HVAC system for the common area? Y N Not
Sure
(If No or Not Sure, skip to SECTION 5)
Is it separate from the building’s HVAC system? Y N Not
Sure
(If No or Not Sure, skip to SECTION 5)
What type of filter is used? High Efficiency Filter Regular Filter Not Sure
Filter Name
Filter Size
Filter Type Paper Electrostatic Fiberglass _____ Other
(describe)
Filter Efficiency Rating____________________
Has the filter been changed since the WTC collapse? Y N Not
Sure
If yes, date
Have the ducts been cleaned since the WTC collapse? Y N Not
Sure
If yes, date
Does system recycle air? Y N Not
Sure
If yes, what percent of the air is recycled? % Not
Sure
Has the system been recycling since the WTC collapse? Y N Not
Sure
O. Has the HVAC system been SERVICED since the WTC collapse? Y N Not
Sure
If yes, date
P. Has the HVAC system been CLEANED since the WTC collapse? Y N Not
Sure
If yes, date
Q. Was the HVAC fan ON during the entire air sampling period? Y N Not
Sure
If NO, how long did the fan run (in hours)? hours Not
Sure
19
NYC-WTC_000164804
OCR can misread numbers and units. Confirm readings against the page image before using them.