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Air sampling report for mercury vapor, March 2002
Machine-extracted title · confidence 95%Laboratory report from ATC Associates detailing air sampling results for mercury vapor conducted at a NYC school in March 2002.
NYC-WTC_000175674–000175675Page image
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NYC 9/11 Public Portal Document
Mr. Bernard ]’. Orlan March 29, 2002 Air Sampling for Mercury Vapor Page 2 Stuvvesant Hi uh School ATC Project No. 15-19125-0246
Blank-Corrected (Hg) Concentrations March 13,2002 I
Hg-1 0.290 96 0.302 **BDL 1” Floor Main Lobby HgC 0.300 96 0.312 0.104 2"'* floor bridge lobby 0.300 96 0.312 0.104 Roof Hg-4 0.290 Blank * micrograms per cubic meter of air ** Below Detection Limit
The established regulatory value for mercury (OSHA: O.lmg/m’) is intended for industrial workplace exposures and is not generally applicable to office/school settings. There are no standards for mercury in indoor air in non-industrial situations. The EPA has no standard or guideline for mercury vapor in ambient air.
ATC appreciates the opportunity to provide this indoor air quality service to the BOE. Please call me at (212) 353-8280 extension 212 if you have any questions.
Sincerely, ATC Associates, Inc.
James R. Cohn, CIH, CSP Regional Manager Industrial Hygiene Division
Attachment
CONFIDENTIAL, CITY_21MC100_003432311 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175675
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NYC-WTC_000175675Source: NYC Law Department, mirrored locally
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