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NYC-WTC_000226868

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NYC 9/11 Public Portal Document

Feb 06 02 0B:54a PSC Rnalytical Services 6109213667 P-2

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING • EPAWLAF101262-0 • NY DOIWELAC10903 • rUDEP 77020 •AIHAACCREDITATIONNO. 100439 ■ PA DEP 06-353 «CT DPHPH-D238 •NCDENR599

ANALYTICAL SERVICES Analytical Results for ATC Associates WorkOrder; R02020161 Client Reference; 19125-0297

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (Ug) ; (mg/m^) : (ppm) (ug)

Client ID: Dusil ATC-0202-S9M LablD:-01.A Date Sampled: 2/2/02 Matrix: Filter AirVol.(L): 1440 Total Particulate Matter <50.0 <0.00347 50 N0500 O2/D5/2002 EDV -p/oOV Client ID: Dust2 ATC-0203-89M Lab ID; -02A Date Sampled: 2/3/02 Matrix: Filter Air Vol.(L): 1440 Total Particulate Matter 100 0.00694 50 N0500 02/05/2002 EDV iLo c M ''2-^ t Client ID: Dust? ATC-0203-89M Lab ID: -03A Date Sampled: 2/3/02 Matrix: Filter Air Vol.(L): 1440 Total Particulate Matter 90.0 0,00625 50 N0500 02/05/2002 EDV V^o<3 M. '^0^2- (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 trot available or not applicable. Back sections were checked and showed no significant breakthrough.

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NYC-WTC_000226868

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NYC-WTC_000226868Source: NYC Law Department, mirrored locally

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PSC Analytical Services results for dust samples collected at P.S. 89M on February 6, 2002.

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