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NYC-WTC_000229437

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NYC 9/11 Public Portal Document Jul 03 02 08;49a PSC 610-921-9667 p.a

ENVIRONMENTAL TESTING PSC ANALYTICAL INDUSTRIAL HYGIENE • EP/«4VLAP 101262-0 •NY DOHINELAC 10903 •NJ DEP PA020 • AIHA ACCREDITATION NO. 100439 • PA OEP 08-353 •CTDPH PH-0220 • NC DENR 599

Analytical Results for ATC Associates WorkOrder: R02060998 Client Reference; 19125-0246, Dust

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ug) (mg/m’) 1 (ppm) (ug) Client ID: ATC-0626-STy-DUST Lab ID: -01A Date Sampled: 6/26/2002 Matrix: Filter AirVol.(L): 14400 Total Particulate Matter 50.0 0.00347 50 N0500 07/01/2002 TEN

(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.

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CITY_21MC100_000492476 NYC-WTC_000229437

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NYC-WTC_000229437Source: NYC Law Department, mirrored locally

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