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
ea© Tiffany-Bader Environmental, Inc. 41 Fountayne Lane Lawrenceville, New Jersey 08648-2679 Tel: (609) 897-0848 Fax (609) 897-0850 envirocenter.com/tbe E-Mail: tbenvii~aaol.com December 22, 2001
Mr. Edward Sullivan Director of Operations B.M.C.C. 199 Chambers Street New York, New York 10007-1097
Re: Direct-Reading Measurements for fine dust particles
Dear Mr. Sullivan,
Tiffany-Bader Environmental, Inc. (TBE) performed direct-reading testing on December 19, 2001, for fine dust particles (2.5 m in diameter) in the portable classrooms, to assess the performance of the portable HEPA filtered air cleaners. The sampling was performed by Howard Bader, P.E., of TBE. At the time of sampling, the portable HEPA filtered air cleaners had been installed in all the portable classrooms
Several buildings at and adjacent to the World Trade Center Complex in lower Manhattan were destroyed or severely damaged on or around September 11, 2001. A waste transfer operation is located directly across the street (West Street) from the school building. It is suspected that debris from the initial building damage and waste transfer operation is potentially contaminating areas in lower Manhattan with fine dust particles. Past sampling by TBE had determined that the particulate levels in the portable classrooms that did not have the portable HEPA filtered air cleaners were higher than those that had the HEPA units. TBE's scope of work was to evaluate the particulate levels in the portable classrooms now that the HEPA units were installed in each classroom.
Fine Dust Particles Testing
TBE took realtime particle (aerosol) measurements in g/m3 at 2.5 m diameters (PM2.5), using a TSI Model 8520 Dust Trak Aerosol Monitor. The Dust Trak is a laser 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 rg/m3 averaged over a 24
NYC-WTC 000106374
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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.
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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
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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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