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 / 3 pages

Air sampling report for metals at School for Leadership, March

Machine-extracted title · confidence 95%

Letter report detailing air sampling for metals conducted on March 1, 2002, at the School for Leadership and Finance.

NYC-WTC_000175563–000175565
←Page 1 of 3→
Mirrored PDFOfficial City PDF ↗
Page image
Scanned page image, NYC-WTC_000175563
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

104 East 25th St.. 10th Floor New York. New York 10010 www.atc-enviro.com 212.353.8280 Fax 212.353.8306 ASSOCIATES INC.

March 29, 2002

Mr. Bernard P. Orlan Director, Environmental Health and Safety New York City Board of Education 28-11 Queens Plaza North Long Island Chy, NY 11101

Re: Air Sampling for Metals High School for Leadership & Public Service (M894) ATC Project No. 15-19125-0290

Dear Mr. Orlan:

ATC Associates, Inc. (ATC) is pleased to provide this letter report of air sampling for metals conducted on March 1, 2002, at the referenced school. The New York City Board of Education (BOE) requested these samples to determine if acceptable air quality is being maintained.

Scope of Work

ATC collected four (4) samples for metals in air. Samples were collected for ten (10) hours. Three (3) samples were collected inside the building and one (1) was collected outdoors. One blank filter was also submitted. The samples were sent to PSC Analytical Services, Inc., an American Industrial Hygiene Association-accredited laboratory in Reading, PA. Copies of the analytical reports are attached.

The samples were collected using 37 mm mixed cellulose ester filters connected to battery- powered sampling pumps at a flow rate of 2 liters per minute. Pumps were calibrated before and after each sampling period. Analysis was performed by NIOSH Methods 7300M. Each sample was analyzed for cadmium (Cd), chromium (Cr) and lead (Pb).

The locations of the samples were the Roof by air intake, 1“ floor Main Lobby, 5“’ floor Hallway near the elevator and the lO"' floor Hallway near the elevator.

The established regulatory values for metals are intended for industrial workplace exposures and are not generally applicable to office/school settings. There are no standards for these materials in indoor air in non-industrial situations.

Results

Chromium (Cr) and lead (Pb) were found above the limits of detection. Cr was also detected in the blank. Cr has typically been detected as a trace contaminant of the filters.

CONFIDENTIAL, CITY_21MC100_003431659 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175563

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

NYC-WTC_000175563Source: 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 →