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NYC-WTC_000220156
Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000220156–000220158Page image
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NYC 9/11 Public Portal Document
LIBERTY MUTUAL Industrial Hygiene Air Sample Results Contracitor:
Dates Covered
Enclosed ai e the results from industrial hygiene air samples recently collected in your area of the WTC recovery operation. These samples were collected by ATC Associates, Inc.
Samples marked as “personal” samples were collected by having the worker wear the sampling device. Results from personal samples are representative of the time-weighted average exposure experienced by the worker. Samples marked as “area” samples were collected in a fixed location. These samples give an idea of average contaminant concentration at the fixed location but do not necessarily represent worker exposure levels.
You should notify each worker who has participated in the industrial hygiene air sampling that the results are available and educate them about their work exposures.
If you have questions concerning the enclosed sample results or any questions concerning occupational disease exposures or controls, feel free to contact the Liberty Mutual Industrial Hygienist on duty @917- 566-2576.
Donald Weber, Sr., IMT Senior Industrial Hygienist Liberty Mutual Insurance Group
03-10-02
eCs Bovis - Ray Masters ■—7^ DDC - Bob Adams LMIG - John Rabovsky LMIG - IH File ATC - Mike Donovan
CITY_21MC100_010167164
NYC-WTC_000220156
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NYC-WTC_000220156Source: NYC Law Department, mirrored locally
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