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Asbestos Air Sampling Results Summary, Oct-Nov 2001

Machine-extracted title · confidence 95%

Summary of air sampling results at PS 89 and PS 234 showing all samples below re-occupancy standards.

NYC-WTC_000186726–000186728
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NYC 9/11 Public Portal Document

ASBESTOS STANDARDS • POLARIZED LIGHT MICROSCOPY(PLM) - For bulk samples & the std is greater than 1% • PHASE CONTRAST MICROSCOPY (PCM) 1 ■

- For air samples & the re-occupancy is O.Olfibers/cc O

o • Transmission Electron Microscopy (TEM) m

o - For air samples & the re-occupancy std. Is 70 J] □0

o structures/ square millimeter > There is no indoor or outdoor std for asbestos. c □0 o o o o ro CD 1^ ro

NYC-WTC_000186728

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NYC-WTC_000186728Source: NYC Law Department, mirrored locally

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