NYC-WTC_000207730

NYC 9/11 Public Portal Document Aug 30 02 04:35p PSC 610-921-9GG7 P-7

ANALYTICAL INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING •EP/WLAP101262-0 • NY OOLWtELAC 10903 •NJOEP PA020 ■AIHA ACCREDITATION NO. 100435 • PA DEP 06-353 •CT0PHPH-O23S •NCDENR 595 Analytical Results for ATC Associates WorkOrder: R02080860 Client Reference: 19125-0340

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst («g) (Hig/m-’) ; (ppm) (ue) Client ID: ATC-0827-IM-VOC4 Lab ID: -04A Date Sampled: 8/27/02 Matrix: Charcoal Air Vol.(L);

1.1,1-Trichloroelhane <20 20 OSHA7 08/29/2002 JLS 1,2-Dichloroetbane <20 20 OSHA7 08/29/2002 JLS A Hydrocarbons, Total <20 20 OSHA 7 08/23/2002 JLS Acetone <20 20 OSHA 7 08/29/2002 JLS B Hydrocarbons, Total <20 20 OSHA 7 08/29/2002 JLS Benzene <20 20 OSHA 7 08/29/2002 JLS 1

Chlorobenzene <20 20 OSHA 7 08/29/2002 JLS Chloroform <20 20 OSHA 7 08/29/2002 JLS Ethylbenzene <20 20 OSHA 7 08/29/2002 JLS Hexane <20 20 OSHA 7 08/29/2002 JLS Isopropylbenzene <20 20 OSHA 7 08/29/2002 JLS Methylene Chloride <20 20 OSHA 7 08/29/2002 JLS Pentane <20 20 OSHA 7 08/29/2002 JLS Styrene <20 20 OSHA 7 08/29/2002 JLS Tetrachloroethene <20 20 OSHA 7 08/29/2002 JLS Toluene <20 20 OSHA 7 08/29/2002 JLS Trichloroethene <20 20 OSHA 7 08/20/2002 JLS Xylenes, Total <20 20 OSHA 7 08/29/2002 JLS

(a) Analysis indicates possible breakthrough; back section result is greater than % 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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NYC-WTC_000207733