Residential sampling protocol, World Trade Center, Oct 2001

NYC 9/11 Public Portal Document

i wtc residential plan octislwpd P^ge 191

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5. Was visible dust present? __ Yes __ No

If YES, describe (include location(s))

6. Is dust still present? __ Yes __ No

If YES, describe (include location(s)) I 7. Is there a building-wide HVAC system (as opposed to each apartment having separate systems)? __ Yes __ No

If YES, has the HVAC system been used since the WTC event? _Yes __ No

Has the system been recirculating air or drawing from the outside?

What type of filter(s) are in the system (describe)? Name(s)_______ Size(s) ______ Type(s) _______

What was the date of the last filter change (if more than one filter, include dateof each filter change)?

8. During this air and dust sampling, was there:

Foot traffic (people leaving/entering the common spaces being tested) __ Yes __ No

Likeb' cigarette or other tobacco smoking __ Yes __ No

Cleaning or vacuuming __ Yes __ No If yes, describe

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