NYC Law Department release
Independent mirror · updated as the City releases more · v1.3.2
☕ Buy me a coffee
← Document results/Unboxed/No folder label
Document / 2 pages

Dioxin and furan wipe sample report, PS 131M, Oct 2002

Machine-extracted title · confidence 95%

Laboratory report from ATC Associates detailing results for polychlorinated dibenzo-p-dioxins and dibenzofurans in school wipe samples.

NYC-WTC_000175449–000175450
←Page 1 of 2→
Mirrored PDFOfficial City PDF ↗
Page image
Scanned page image, NYC-WTC_000175449
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

104 East 25th St 10th Fl New York New York 10010 WWW ate enviro com 212 353 8280 Fax 212 353 8306 ASSOCIATES INC

October 2 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 131M ATC Project No 15 19125 0346

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 August 23 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 pads and solvent were 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

WIPE SAMPLING RESULTS

ATC submitted three (3) wipe samples and one blank for PCDDs/PCDFs to Pace for analysis A copy of the laboratory analysis report is provided in the Attachment within the pharmacy area One sample was taken from each floor of the building The area of each sample one (1) square meter (Im^)

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

( CONFIDENTIAL, CITY_21MC100_003431065 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175449

OCR can misread numbers and units. Confirm readings against the page image before using them.

NYC-WTC_000175449Source: 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

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.

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.

Compare copies and versions →