10 shared non-person entities · 1 shared topics · similarity 0.997
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NYC-WTC_000189299
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NYC 9/11 Public Portal Document
104 East 25th St 10th Floor New York New York 10010 WWW ate enviro com 212 353 8280 Fax 212 353 8306 ASSOCIATES INC
May 22 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 High School for Leadership and Public Service (M894) ATC Project No 15 19125-0290
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 April 19 and 26 2002 at the referenced location The New York City Board of Education (BOE) 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 dioxm analysis The analysis was performed by modified EPA Method 8290 using combined capillary column gas chromatography/high resolution mass spectrometry
Wagdi Abdelshahid 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 dates the samples were collected
WIPE SAMPLING RESLLTS
On each day ATC submitted three (3) wipe samples for PCDDs/PCDFs to Pace for analysis A copy of the laboratory analysis report is provided in the Attachment Samples were taken from areas in various parts of the building The sample area was one square meter (1 m^)
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 equn alency factor
CITY_21MC100_003085274
NYC-WTC_000189299
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NYC-WTC_000189299Source: NYC Law Department, mirrored locally
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