8 shared non-person entities · 1 shared topics · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗Document / 2 pages
NYC-WTC_000202191
Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000202191–000202192Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
(Satc 104 East 25th St New York, New York 10010 www.atc-enviro.com 212.353.8280 Fas< 212.353.8306 ASSOCIATES INC.
February 7, 2002
Mr. Bernard P. Orlan Director, Environmental Health and Safety New York' City Board of Education 28-11 Queens Plaza Noidh Long Island City, NY 11101
Re: Air Sampling for Hydrocarbons P. S. 89M ATC Project No. 15-19125-0297
Dear Mr. Orlan:
ATC Associates, Inc. (ATC) is pleased to provide this report of the results of air sampling for volatile hydrocarbon compounds conducted on January 31, 2002, at the referenced school. The New York City Board of Education (BOE) requested this sampling as part of a program to ' determine the indoor air quality prior to reoccupancy.
Scope of Work
ATG collected four (4) samples for hydrocarbon compounds (HC) at specified locations. Samples were collected for ten (10) hours using activated coconut shell charcoal rubes connected to batteiy-powered sampling pumps ata flow rate,of 0.2 liters per minute. Pumps were calibrated before and after each sampling period.. Three (3) samples were collected from,locations outside the building and one (1) was collected inside. One blank tube was also submitted for analysis. The samples were sent to PSC Analytical Services, Inc., an American Industrial Hygiene Association-accredited laboratory in Reading, PA. Analysis was performed by capillary gas chromatography/flame ionization detection (OSHA Method 7).
Each sample was analyzed for a panel of sixteen (16) specific HC compounds. These compounds were: pentane, acetone, methylene chloride, hexane, chloroform, methyl chloroform, benzene, 1,2-dichloroethane, trichloroethylene, toluene, perchloroetyhylene (tetrachloroethylene), chlorobenzene, ethylbenzene, styi'ene, cumene and xylenes. In addition, two non-identified peaks, total other A- hydrocarbons and total other B-hydrocarbons, were reported. The A- hydrocarbons are those, such as gasoline or light alcohols, with boiling points less than that of benzene (176“F). The B-hydrocarbons are those, such as mineral spirits or petroleum naphtha, with boiling points greater than that of benzene. Copies of the analytical reports are attached.
The sampling locations were as follows:
D* floor hallway, playground-north, playground-south and the roof.
CITY_21MC100_003270487
NYC-WTC_000202191
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000202191Source: 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
8 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175016
Letter report from ATC Associates detailing air sampling results for hydrocarbon compounds at a New York City school in February 2002.
9 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · 1 shared topics · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗9 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175238
Lab report detailing air sampling for volatile hydrocarbon compounds conducted at P.S. 124M on September 12, 2002.
8 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175262
Memo reporting results of air sampling for volatile hydrocarbon compounds conducted at P.S. 126M on August 29, 2002.
8 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗9 shared non-person entities · 1 shared topics · similarity 0.974
machine-extracted · confidence unavailable · Check page ↗9 shared non-person entities · 1 shared topics · similarity 0.974
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 ↗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 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.996 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.996 (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
Similar indexed content
NYC-WTC_000175016
Letter report from ATC Associates detailing air sampling results for hydrocarbon compounds at a New York City school in February 2002.
Similar indexed content
Similar indexed content
Similar indexed content