NYC 9/11 Public Portal Document
Bulk samples of settled dust to be analyzed for fiberglass fiber content were collected only from
locations where there was sufficient amount of settled dust for bulk sampling and analysis.
ATC was able to collected bulk samples from all the aforementioned locations inside and outside
the building.
The purpose of the dust bulk sampling is to determine if settled dust in the school contains
fiberglass fibers. ATC will be repeating this sampling preferably every Friday as per the
recommendation of ENVIRON and after the approval ofNYC-BOE. This is the 20* consecutive
week such a sampling is performed in P.S. 89M.
A total of forty (40) settled dust bulk samples were collected from the aforementioned areas
where there was sufficient amount of settled dust for bulk sampling and were analyzed utilizing
Polarized Light Microscopy (PLM).
Analytical results indicated that none of the forty (40) collected settled bulk samples contained
fiberglass fibers.
The settled dust bulk sampling performed was limited to testing for fiberglass in locations
indicated by ENVIRON Corp, and as outlined in the school’s BOE approved sampling protocol.
Attached please find the following:
• Settled dust bulk sample chain of custody form and laboratory results
• Laboratory and personnel certificates
If you have any questions or require additional information regarding this limited settled dust
bulk sampling, please do not hesitate to contact me at (212) 353-8280 extension 211.
Sincerely,
CZ Yiannis Efstathiou
Senior Project Manager
Cc: Mr. T. Fusillo (ENVIRON Corp.)
Ms. C. Procter (UFT)
Mr. C. D’Andrea (NYC-DOH)
CONFIDENTIAL, CITY_2IMCl00_003471545
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177204
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