12 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗Document / 2 pages
NYC-WTC_000226938
Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000226938–000226939Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan March 1,2002 Wipe Samples for Dioxins Page 2 Stuwesant Hieh School (Manhattan) ATC Project No, 15-19125-0246
Each sample was analyzed for sixteen (16) PCDD/PCDF isomers. The results for each isomer were then converted to 2, 3, 7, 8 tetrachloro-dibenzo-p-dioxin (2, 3, 7, 8-TCDD) equivalents by multiplying by an established equivalency factor. This provides a single value (in nanograms) for the analytical results for each sample. Copies of the draft analysis reports are attached. The results are shown in the following table.
DIOXIN WIPE SAMPLE RESULTS 2,3, 7, 8 TCDD EQUIVALENTS - Nanograms per square meter (ng/m^)
r?. 1^ Floor Lobby 0.00 Main Entrance 2’® Floor Lobby 0.00 Bridge Entrance HVAC#1 0.00051 Mixed Air’Plenum
Field Blank 0.00
The New York State Department of Health (NYSDOH) established guidelines for dioxin for the re-occupancy 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 York State Department of Environmental Conservation (NYSDEC) has set 0.0006 parts per million (ppm) as the allowable concentration of dioxin in soil. The EPA has established a residential clean-up goal of 1 part per billion (ppb).
Dioxins were not detected in the two samples from the school interior. The level found in the HVAC #1 sample was below the NYSDOH guideline of 25 ng/m^.
It is riot 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 services to the NYC Board of Education. If you have any questions about this report, please call (212) 353-8280, extension 212.
Sincerely, ATC Associates, Im
James R. Cohn, CIH, CSP Regional Manager, Industrial Hygiene Division
Attachment
CITY_21MC100_002896370
NYC-WTC_000226939
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000226939Source: NYC Law Department, mirrored locally
Related records
Browse subjects →Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
Same-box records
NYC-WTC_000175048
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 6, 2002.
12 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.998
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.
12 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.997
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.
12 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.997
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.
11 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗Filed elsewhere
No available related records indexed in this group.
More like this page
Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175048
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 6, 2002.
Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.997 (not a probability)
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.
Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Others also read
Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
Similar indexed content
NYC-WTC_000175048
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 6, 2002.
Similar indexed content
Similar indexed content
NYC-WTC_000175051
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 14, 2002.
Similar indexed content
Similar indexed content