Laboratory report from ATC Associates providing results of wipe samples for dioxins and furans collected at a NYC school in February 2002.
NYC-WTC_000175676–000175677
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
.Mr. Bernard P. Orlan March 21. 2002 Wipe Samples foi Dioxins Page 2 Stnxwcsani Utah f'Chool (Manhattan) .ATC PrcjectNo 15-19125-ti-46
Each St.mple was analyzed for sixteen (16) PCDD'PCDF isomers. The results for each isomer were the.- convened to 2. 3, 7, 8 tetrachloro-dibenzo-p-dioxin (2. 3, 7, 8-TCDD) equivalents by multiplyng by an established equivalency factor. This proiddes a single value (m nanograms) for the analyuca! results for each sample. Copies of the draft analysis reports are attached. Th e results are shows in the following table.
DIOXIN WIPE SAMPLE RESULTS 2, 3, 7. 8 TCDD EQUIVALENTS - Nanograms per square meter (iig/m^)
L OCATION/sample DIOXIN CONCENTRATION ID ? ' Floor Lobby Mam Entrance / DXl 0.00031 if® Floor Lobby Bridge Entrance /DX2 0.00015 HVAC#1 Mixed Air Plenum,'' DX3 0.00061
Field Blank/DX4 0.0023
The New '/oik Slate Department of Health (NYSDOH) established guidelines for dioxin for the re-occaaancy of the Binghamton State Office Building following a PCB fire. The NYSDOH guideline for dioxin on surfaces is 25 nanograms per square meter (25 ng/m^). The New hTrk State Departnent of Environmental Conservation (NYSDEC) has set 0.0006 parts per million (ppm) a.s the allowable concentration of dioxin in soil. The EPA has established a residential clean-u|') goal of 1 part per billion (ppb).
The concentrations on indoor surfaces ranged from 0.00015 to 0.00061 nanograms per square meter (ng/m-). The levels found in all of these samples are below the NYSDOH guideline of 25 ng/T.^-.
It if not possible to determine when the 2, 3, 7, 8 - TCDD equivalents detected in this sample was deposited. Dioxin samples were not collected from these locations prior to November 8, 2001, and 'therefore a background sample is not available for comparison purposes.
It is our pleasure to provide these indoor environmental sendees to the NAT' Board of Education. If you have any ciuestions about this report, please call (212) 353-8280, extension 212.
Sincerely, ATC Associates, In
James R. (Zohn'^TH, CSP Regional Manager, Industrial Hygiene Division
Atta.chfr.eiit
CONFIDENTIAL, CITY_21MC100_0 03432354 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175677
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NYC-WTC_000175678
Laboratory report from ATC Associates providing results of wipe samples for dioxins and furans collected at a NYC school in February 2002.
11 shared non-person entities · 1 shared topics · similarity 0.996
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175051
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 14, 2002.
13 shared non-person entities · 1 shared topics · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175721
Laboratory report detailing polychlorinated dibenzo-p-dioxins and furans (PCDDs/PCDFs) wipe sample analysis from a New York City Board of Education school collected in March 2002.
12 shared non-person entities · 1 shared topics · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175058
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on March 8, 2002.
12 shared non-person entities · 1 shared topics · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175680
Laboratory report from ATC Associates providing results of wipe samples for dioxins and furans collected at a NYC school in February 2002.
13 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175053
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 22, 2002.
13 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗No available related records indexed in this group.
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NYC-WTC_000175678
Laboratory report from ATC Associates providing results of wipe samples for dioxins and furans collected at a NYC school in February 2002.
Similarity score 0.994 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.993 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175721
Laboratory report detailing polychlorinated dibenzo-p-dioxins and furans (PCDDs/PCDFs) wipe sample analysis from a New York City Board of Education school collected in March 2002.
Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.992 (not a probability)
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NYC-WTC_000175678
Laboratory report from ATC Associates providing results of wipe samples for dioxins and furans collected at a NYC school in February 2002.
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