ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on February 22, 2002.
NYC-WTC_000175053–000175054
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
rA 104 East 25th St., 10th Floc New York, New York 1001 www.atc-enviro.car 212.353.828 Fax 212.353.830' ASSOCIATES INC.
March 21, 2002
Mr. Bernard P. Orlan Director, Environmental Health & Safety New York City Board of Education 28-11 Queens Plaza North Long Island City, NY 11101-4008
Re: Wipe Samples for Dioxins Stuyvesant High School ATC Project No. 15-19125-0246
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 February 22, 2002, at the referenced location. The New York City Board of Education (BOE) requested these samples to evaluate possible contamination in the school building per the recommendation of H. A. Bader, consultant to the parents association.
Scope of Work
Wagdi Abdelshahid, Industrial Hygienist of ATC’s New York City office, collected the samples.
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.
The sampling was performed 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 dates the samples were collected.
Results
ATC submitted three wipe samples for PCDDs/PCDFs (plus one blank) to Pace for analysis. Samples were taken from areas specified by the parents association consultant. The sample area for each sample was one square meter (1 m^). The areas sampled were:
• 1 st floor main lobby wall; • 2nd floor bridge entrance wall; • Mixed air plenum - HVAC# 1 wall.
CONFIDENTIAL, CITY_21MC100_003429587 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175053
OCR can misread numbers and units. Confirm readings against the page image before using them.
Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
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 0.999
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175056
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on March 1, 2002.
11 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175719
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 May 2002.
11 shared non-person entities · 1 shared topics · similarity 0.998
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.
13 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 ↗NYC-WTC_000175723
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 May 2002.
11 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175045
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on January 30, 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 0.997
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗No available related records indexed in this group.
Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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 1.000 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175676
Laboratory report from ATC Associates providing results of wipe samples for dioxins and furans collected at a NYC school in February 2002.
Similarity score 0.999 (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 0.999 (not a probability)
machine-extracted · confidence unavailable · Check page ↗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 0.999 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.999 (not a probability)
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.
Similarity score 0.999 (not a probability)
machine-extracted · confidence unavailable · Check page ↗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.
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
NYC-WTC_000175056
ATC Associates report on wipe samples for polychlorinated dibenzo-p-dioxins and dibenzofurans collected at a school on March 1, 2002.
Similar indexed content
NYC-WTC_000175719
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 May 2002.
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