Letter reporting asbestos testing results for air and dust at Borough of Manhattan Community College in February 2002.
NYC-WTC_000106330–000106405Folder label: “199 CHAMBERS STREET; Block: 16 Lot: 215 BIN: 1084587 BMCC”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
photometer, which uses light scattering technology to determine mass concentration. The instrument has a sample flowrate of 1.7 Umin. Based on the U.S. EPA's Air Quality Index, the level of concern for the general population from exposure to fine dust particles at PM2.5 is 65 ug/m3 averaged over a 24 hour period. EPA lowers the level of concern for sensitive groups, including children, the elderly, and people with heart or lung disease, to 40 ug/m3 averaged over a 24 hour period.
According to the EPA, when outdoor levels exceed 40 ug/m3 over a 24 hour period, people with respiratory disease, such as asthma, should limit outdoor exertion. Also, the EPA states, when outdoor levels exceed 65 ug/m3, all people, especially the elderly and children should limit prolonged outdoor exertion. The EPA Web site for particulate testing related to the World Trade Center disaster states "most healthy adults and children are expected to recover quickly from any symptoms of short-term exposure like coughing, wheezing, or eye and throat irritation. EPA expects the long-term risk from these short-term exposures to be low."
The EPA is collecting PM2.5 using gravimetric samplers, while TBE is using a laser particle counter (the TSI Dust Trak). According to TSI, some studies have shown that the Dust Trak sampled approximately 3 times more than the gravimetric samplers. This higher sampling efficiency may cause higher readings for the Dust Trak as compared to gravimetric samplers.
Following is a summary table of PM2.5 particulate testing done on November 13th & 20th:
Date Outdoor Readings Indoor Range' Comments (pg/m3) (pg/m 3)
11/13 30-86 7 - 25 54 readings, (Main Building] none exceeded 65 pg/m3, none exceeded 40 pg/m3 11/13 30-86 23-74 24 readings, [Portable Trailers] I exceeded 65 pg/m3, 3 exceeded 40 pg/m3 11/20 10-46 1 -20 54 readings, [Main Building] none exceeded 65 pg/m3, none exceeded 40 pg/m3 11/20 10-46 8-63 25 readings, [Portable Trailers] none exceeded 65 pg/m3, 3 exceeded 40 pg/m3
NYC-WTC 000106354
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NYC-WTC_000106406
Memo from PSI detailing periodic environmental testing for asbestos, lead, silica, and dust at BMCC trailers on Chambers Street in December 2001.
18 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.976
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149432
DEP asbestos project notification form and inspection report dated December 12, 2002.
19 shared non-person entities · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125845
Draft fact sheet from DOH and DEP addressing tenant concerns regarding asbestos fibers at 105 Duane Street.
20 shared non-person entities · 1 shared topics · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149537
Instructions and sections for collecting sample location data from a specific building interior.
20 shared non-person entities · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · similarity 0.966
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.
16 shared non-person entities · 1 shared topics · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
16 shared non-person entities · 1 shared topics · similarity 0.964
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 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000159829
Coordination memo for WTC recovery inter-agency meeting on building and parks assessment and scope.
15 shared non-person entities · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164960
Draft compilation of asbestos air samples collected from residential areas November-December 2001 by NYC DOH and ATSDR.
16 shared non-person entities · 1 shared topics · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000150163
Internal memo draft addressed to the Commissioner regarding environmental compliance actions and correspondence drafts dated October 15, 2001.
12 shared non-person entities · 1 shared topics · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151361
A letter defending the validity of DEP and contractor data used to clear residential units at 114 Liberty Street for re-occupancy.
13 shared non-person entities · similarity 0.962
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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NYC-WTC_000095634
Memo dated January 10, 2005 regarding a SEQR Lead Agency request for the BMCC Decontamination project.
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NYC-WTC_000106406
Memo from PSI detailing periodic environmental testing for asbestos, lead, silica, and dust at BMCC trailers on Chambers Street in December 2001.
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NYC-WTC_000141083
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in October 2001.
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EPA news summary dated October 13, 2001, regarding environmental monitoring data collected from the World Trade Center site.
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EPA news summary dated October 12, 2001, regarding environmental monitoring data collected from the World Trade Center site.
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