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← Document results/DEP Box 03/E-Mails Sent M. Gilsenan 2001-2002
Document / 52 pages

NYCDOH/ATSDR residential asbestos sampling results November-December 2001

Machine-extracted title · confidence 50%

Forwarded spreadsheet compiling residential asbestos sampling results collected in November-December 2001, including Building 11 reoccupancy assessment.

NYC-WTC_000139656–000139707

Folder label: “E-Mails Sent M. Gilsenan 2001-2002”

Page image
Scanned page image, NYC-WTC_000139696
OCR text

OCR status: ok · source: pdftotext

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■D o c o CT o o' o ■D co o C33 CD 3. C33 03 Particulate Matter (PM) Screening Guidelines for World Trade Center Response o o o c 3 CD

Ambient Screening Outdoor Air Indoor Air Guidelines General Public General Public (Hg/ni’) Comments/Recommendations Comments/Recommendations

Respirable Particulate 24 hour PM2.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, • Identity 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_000139696Source: NYC Law Department, mirrored locally

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