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NYC-WTC_000187722
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NYC 9/11 Public Portal Document
Centers for Disease Control and Prevention National Institute for Occupational Safety and Health Interim Air Sampling Report Sunday, September 30, 2001
Investigators from the National Institute for Occupational Safety and Health (NIOSH) collected air samples in areas immediately adjacent to the debris pile and on personnel actively involved in rescue efforts on or in the vicinity of the debris pile to characterize potential exposures. Below are the interim sampling results for Sunday, September 30, 2001,
Air Samples
Metals • 6 area air samples were collected for metals o Nothing of concern was found regarding metal analysis
Respirable Dust • 5 area air samples were collected for respirable dust o Personal sample 8-hour time-weighted average concentrations were below 0.13 mg/m^
Total Dust • 6 area air samples were collected for total dust o Most personal sample 8-hour time-weighted average concentrations were below 1.0 mg/m^ (one was 1.9 mg/m^)
K.M. Wallingford 10/4/01
CITY_21MC100_008906353
NYC-WTC_000187722
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NYC-WTC_000187722Source: NYC Law Department, mirrored locally
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