Report from ATC Associates detailing polychlorinated dibenzo-p-dioxin and dibenzofuran wipe sample analysis conducted at a New York City school.
NYC-WTC_000175545–000175546
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
104 East 25th St, Wth Floor 4. New York, New York 10010 WWW atc-enviro com 212 353 8280 Fax 212 353 8306 ASSOCIATES INC.
November 25, 2002
Mr Bernard P Orlan Director, Environmental Health & Safety New York City Department of Education 28-11 Queens Plaza North Long Island City, NY 11101-4008
Re: Wipe Samples for Dioxins P. S. 124 Manhattan ATC Project No. 15-19125-0350
Dear Mr Orlan
ATC Associates Inc (ATC) is pleased to provide this report of the results of the wipe-samples for polychlorinated dibenzo-p-dioxins (PCDDs)and dibenzofurans (PCDFs) collected on September 12, 2002, at the referenced location The New York City Department of Education (DOE) requested these samples to evaluate possible contamination in the school building
Scope of Work
The samples were collected using gauze pads and hexane as a solvent The solvent was provided and samples were analyzed by Pace Analytical Services, Inc (Pace) of Minneapolis, MN, a laboratory experienced in dioxin analysis The analysis was performed by modified EPA Method 8290 using combined capillary column gas chromatography/high resolution mass spectrometry
Tenzin Namgyal, Industrial Hygienist of ATC’s New York City office, collected the samples consistent with generally accepted industrial hygiene practices There were inherent limitations created by constraints of time, operational and work practice variability, variations in contaminant concentrations, and sampling and analytical accuracy The results of the sampling represent conditions found on the date the samples were collected
Results
ATC submitted three wipe samples for PCDDs/PCDFs (plus one blank) to Pace for analysis Samples were taken from representative floor areas throughout the building The sample area for each sample was one square meter (1 m^) The areas sampled were
• Lobby-Mam Entrance • 2nd Floor Hallway by Room 222, • srd Floor Hallway by Room 307
CONFIDENTIAL, CITY_21MC100_003431534 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175545
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NYC-WTC_000175533
Report from ATC Associates detailing polychlorinated dibenzo-p-dioxin and dibenzofuran wipe sample analysis conducted at a New York City school.
10 shared non-person entities · 1 shared topics · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175495
Report from ATC Associates Inc detailing results of wipe samples for dioxins and dibenzofurans collected at a New York City Department of Education school.
10 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 0.998
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 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175474
Environmental health report detailing analytical results for polychlorinated dibenzo-p-dioxins and furans from wipe samples collected in August.
9 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000179461
Laboratory report from ATC Associates detailing wipe sample results for dioxins and furans collected at a school building in February 2002.
10 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175250
Memo reporting results of wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at P.S. 124M on September 12, 2002.
10 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · similarity 0.993
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NYC-WTC_000175533
Report from ATC Associates detailing polychlorinated dibenzo-p-dioxin and dibenzofuran wipe sample analysis conducted at a New York City school.
Similarity score 0.999 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175495
Report from ATC Associates Inc detailing results of wipe samples for dioxins and dibenzofurans collected at a New York City Department of Education school.
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_000175250
Memo reporting results of wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at P.S. 124M on September 12, 2002.
Similarity score 0.996 (not a probability)
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NYC-WTC_000175533
Report from ATC Associates detailing polychlorinated dibenzo-p-dioxin and dibenzofuran wipe sample analysis conducted at a New York City school.
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