30 shared non-person entities · 1 shared topics · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗Document / 17 pages
Environmental lab report distribution, May 2002
Machine-extracted title · confidence 90%EPA staff distributed an environmental laboratory report to federal and city agencies on May 15, 2002.
NYC-WTC_000162222–000162238Folder label: “E-mails 2002 M. Gilsenan”
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
asbestos concentration (f/cc). Thus, if a sample volume is sufSciently less than 1,200 L, the AHERA standard of 70 f/mm2 would convert to an airborne asbestos concentration that exceeds the one year, risk-based value of 0.028 f/cc. However, of greater importance to note is that to date less than 2 % of the samples have exceeded the AHERA standard of 70 f/mm2 and that the vast majority (approximately 80 - 90%) of fibers (from all sampling results) have been < 5 um in length.
In conclusion, when taken in its totality (i.e., individual sample results, length distribution of counted fibers, sample volume). The WTC airborne asbestos sampling data demonstrates that exposure to ambient air for a one year exposure duration is below WTC risk-based screening levels.
NYC-WTC_000162233
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NYC-WTC_000162233Source: NYC Law Department, mirrored locally
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27 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145869
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30 shared non-person entities · 1 shared topics · similarity 0.976
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164862
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16 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
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13 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125845
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21 shared non-person entities · 1 shared topics · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154652
Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
11 shared non-person entities · 1 shared topics · similarity 0.962
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164830
DEP internal memo circulating draft EPA screening level standards for asbestos, fiberglass, and silica in indoor air and settled dust for agency comment.
4 shared non-person entities · 1 shared topics · similarity 0.960
machine-extracted · confidence unavailable · Check page ↗16 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164732
Draft spreadsheet of asbestos sampling results from residential locations collected November-December 2001, circulated for review.
17 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
17 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139656
Forwarded spreadsheet compiling residential asbestos sampling results collected in November-December 2001, including Building 11 reoccupancy assessment.
16 shared non-person entities · 1 shared topics · similarity 0.958
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