4 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗Document / 3 pages
Analytical results for silica dust samples, Mar 2002
Machine-extracted title · confidence 90%Laboratory analytical results document from ATC Associates showing silica concentrations in air samples collected in March 2002.
NYC-WTC_000175073–000175075Page image
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
p-7
INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING •EP/VNVLAP101262-0 «NY QOH/NELAC 10903 ■NJDEP PA02a • AIHA ACCREDITATION NO. 100439 • PA DEP 06-363 ■ CT DPH PH-0238 •NCDENR599 Analytical Results ANALYTICAL SERVICES for ATC Associates WorkOrder: R02030996 Client Reference: 19125-0246- Silica
Analyte Concentration Limit of Test Date Analyzed Detection Method /.Analyst (ug) i (mg/m’) ; (ppm) (ug)
Client ID: S13 ATC-0320-STY Lab ID: -13A Date Sampled; 3/20/02 Matrix: Filter Air Vol.(L); NA Total Particulate Matter <50.0 50 N0600 03/29/2002 ADM
Crystalline Silica - <10.0 to Crystalline Silica 03/29/2002 ADM
(a) Analysis indicates possible breakthrough; back section result is greater than 0% of the front section result.
General Notes: Less than the indicated limit of detection (LOD). —; Information not available or not applicable. Back sections were checked and showed no significant breakthrough.
Page 3 of 3
CONFIDENTIAL, CITY_21MC100_003429745 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175075
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NYC-WTC_000175075Source: NYC Law Department, mirrored locally
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