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Air sampling analytical results, May 2002

Machine-extracted title · confidence 90%

Laboratory report page containing analytical results for air samples collected by ATC Associates for the NYC Board of Education in May 2002.

NYC-WTC_000175786–000175788
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Scanned page image, NYC-WTC_000175787
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NYC 9/11 Public Portal Document

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INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING ANAUVnCAL FSC SESWICIES ■EPWNVtAP101262-D • NY DOHJNELAC 10903 •NJ DEP PAOZfl ■AIHAACCREOITATIONNO. 100438 - PA OEP 06-353 • CT DPH PH-0238 • NC DENR 599 Analytical Results for ATC Associates WorkOrder: R02050660 CUent Reference: 19125-0246, SiUca

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst («g) ; (mg/m") ; (ppm) (ug)

Client ID; ATC-0515-STY-S7 Lab ID; -07A Date Sampled: 5/15/02 Matrix: Filter Air Vol.(L): 816 Total Particulate Matter 333 0.408 50 N0500 05/22/2002 ADM

Silica (Quartz Total) <10.0 <0.0123 10 AIRBORNE SILICA 05/22/2002 ADM

Client ID: ATC-05 I5-STY-S8 Lab ID: -OSA Date Sampled; 5/15/02 Matrix; Filter Air Vol.(L): SI6 Total Particulate Matter <50.0 <0.0613 50 N05O0 05/22/2002 ADM

Silica (Quartz Total) <10.0 <0.0123 10 AIRBORNE SILICA 05/22/2002 ADM

Client ID: ATC-0515 STY-S9 Lab ID: -09A Date Sampled: 5/15/02 Matrix: Filter AirVel.(L):8l6

Total Particulate Matter <50.0 <0.0613 50 N0500 05/22/2002 ADM

Silica (Quartz Total) <10.0 <0.0123 10 AIRBORNE SILICA 05/22/2002 ADM

Client ID: ATC-05l5-STY-$l0 Lab ID: -IDA Date Sampled; 5/15/02 .Matrix: Filter AirVol.(L):8l6 Total Particulate Matter <50.0 <0.0613 50 N0500 05/22/2002 ADM

Silica (Quartz Total) <10.0 <0.0123 10 AIRBORNE SILICA 05/22/2002 ADM

Client ID: ATC-05 15-STY-SI I Lab ID: -HA Date Sampled: 5/15/02 Matrix: Filter Air Vol.(L); 816

Total Particulate Matter <50.0 <0 0613 50 N0500 05/22/2002 ADM

Silica (Quartz Total) <10.0 <0.0123 10 AIRBORNE SILICA 05/22/2002 ADM

Client ID; A rC-051 ;i-STY-Sl 2 Lab ID: -12A Date Sampled: 5/15/02 Matrix; Filter AirVol.(L): S16 Total Particulate Matter <50.0 <0.0613 50 N0500 05/22/2002 ADM

Silica (Quartz Total) <10.0 <0.0123 10 AIRBORNE SILICA 05/22/2002 ADM

Page 2 of 3

CONFIDENTIAL, CITY_21MC100_003433167 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175787

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NYC-WTC_000175787Source: NYC Law Department, mirrored locally

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