NYC 9/11 Public Portal Document
corners of the residence before testing is begun. From that point on, the two tests are identical.
Any air conditioners are turned on and 20-inch fans (one per 10,000 cubic feet of room space) are
run at low speeds for the duration of the test. Depending on the number of rooms in a residence,
from three to five air samplers are located in the residence and run for approximately eight hours.
These samplers draw in a measured volume of room air and collect dust particles from the air on a
filter. The collected dust is then examined in a laboratory for asbestos.
Residents may occupy their home during modified-aggressive testing but should be prepared for
noise and disruption. Occupants with known allergies, asthma or other health concerns should
consider contacting their health care provider to determine whether it is advisable to be present
while cleaning and/or testing is underway. Residents must relocate during and for 48 hours after
aggressive testing. The Red Cross has agreed to provide financial assistance to defray costs for
relocation expenses. Information from the Red Cross will be provided as needed. Occupants will
need to remove or secure objects, including pictures and artwork, that could be blown over or
otherwise damaged.
The Project Monitor will conduct a post-cleaning inspection of the apartment with the resident at
the completion of modified-aggressive sampling or upon re-entry after aggressive sampling.
During this inspection the project monitor and the resident will determine whether
cleaning/monitoring activities were completed and whether any property damage or loss has
occurred. The resident will sign a Project Completion Form
At a limited number of residences (approximately 250), the Project Monitor will conduct pre- and
post-cleanup wipe sampling for dioxin, total metals and mercury. Results of this sampling will be
shared with occupants of the individual residence tested.
EPA will notify residents and owners of the results of the post-cleanup airborne asbestos testing
within one month. Residence-specific test results will not be made public.
Finally, your residence will be recleaned and retested if the post-cleanup testing finds levels of
asbestos in excess of EPA’s cleanup goal.
NYC-WTC_000139098
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