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NYCDOH/ATSDR residential asbestos sampling results, April 2002

Machine-extracted title · confidence 87%

Draft compilation of asbestos air samples collected from residential areas November-December 2001 by NYC DOH and ATSDR.

NYC-WTC_000164960–000165012
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Z z o o g co

o I "0 o c o CT o o' o> tn "0 o o o 03 Particulate Matter (PM) Screening Guidelines for World Trade Center Response O o o c 3 CD 3

Ambient Screening Outdoor Air Indoor Air Guidelines General Public General Public Comments/Recommendations Comments/Recommendations

Respirable Particulate 24 hour PMa.s'

• Compare results to representative background.** • Compare results to representative background.** 40 • Use for evaluation of outdoor contribution to indoor concentrations • Evaluate multiple source contributions (WTC, outdoor, candles, • Identify meteorological conditions and factors such as road traffic during smoking,..).^ sampling. '* • Review pre-sampling questionnaire responses. •Compare to DEC monitors • Assess ventilation systems (heating and cooling). • Consider re-sampling, exposure or trend analysis. • Recommend proper clean-up techniques be employed. • Consider re-sampling and evaluate nearby residences/common areas.

39

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NYC-WTC_000165001Source: NYC Law Department, mirrored locally

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