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Air monitoring data summary, NYC DOH, Sep 2001

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Draft report summarizing air monitoring data reported to the New York City Department of Health in September 2001.

NYC-WTC_000176290–000176295
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Scanned page image, NYC-WTC_000176292
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NYC 9/11 Public Portal Document

DRAFT

Bulk (settled) dust

Agency Date Location N N asbestos N > 1% Maximum Comment samples detected (%) US 9/18/01 Fresh Kills Landfill 4 2 0 unknown Chrysotile detected Public by TEM (written Health as chrysotile ‘yes’ Service but no percentage given). 9/19/01 Inside controlled zone 3 1 1 35-40 Location is ‘ground zero’. Reported range of35-40% needs to be verified with PHS.

Interpretation: While asbestos containing materials in dust at WTC and Fresh Kills is generally below permissible exposure limits for occupational exposure, the potential for higher exposures exist based on bulk dust and debris samples. Continued use of appropriate respiratory protection for workers in or near potentially dusty locations or tasks is indicated. Dust suppression measures should be expanded. Additional personal monitoring underway.

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S n o o I

CO Draft; 9/25/01, 11:45 PM \EnvironmentalMonitoringUpdate_9_25[l] Page:3 of 6 CO

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NYC-WTC_000176292

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NYC-WTC_000176292Source: NYC Law Department, mirrored locally

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