OSHA aromatic hydrocarbon monitoring chain of custody, Oct 2001

NYC 9/11 Public Portal Document

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Analytical Results for ATC ASSOCIATES WorkOrder: RO 1100425 / Client Reference: WTC, 15-75220-001. Rush IH

Analyte Concentratien Limit ot Test Date Analyzed Detection Method /Analyst (“gJ; (mg/tn") ; (ppm) (ug) Client ID: ATC 1027-K-A04 (HCs) Lab ID: -07A Date Sampled; 10/27/01 Matrix: Charcoal Air Vol.(L); 51.15 Benzene <20 <0.33 <0.12 20 VOLATILE AROM 10/31/2001 ANY Ethylbenzene <20 <0.39 <0.090 20 VOLATILE AROM 10/31/2001 ANY Toluene <20 <0.39 <0.10 20 VOLATILE AROM 10/31/2001 ANY Xylenes, Total <20 <0.39 <0.090 20 VOLATILE AROM 10/31/2001 ANY

Client ID: ATC 1027-PTU-05 (HCs) Lab ID: -OSA Date Sampled: 10/27/01 Matrix: Charcoal AirVoL(L): 37.23 Benzene <20 <0.54 <0.17 20 VOLATILE AROM 10/31/2001 ANY Ethylbenzene <20 <0.54 <0.12 20 VOLATILE AROM 10/31/2001 ANY Toluene <20 <0.54 <0.14 20 VOLATILE AROM 10/31/2001 ANY Xylenes. Total <20 <0.54 <0.12 20 VOLATILE AROM 10/31/2001 ANY

Client ID: ATC 1027-0a-Btank (HCs) Lab ID: -09A Date Sampled: 10/27/01 Matrix: Charcoal Air Vol.(L); NA Benzene <20 20 VOLATILE AROM 10/31/2001 ANY Ethylbenzene <20 20 VOLATILE AROM 10/31/2001 ANY Toluene <20 20 VOLATILE AROM 10/31/2001 ANY Xylenes, Total’ <20 20 VOLATILE AROM 10/31/2001 ANY (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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CONFIDENTIAL, CITY_2IMCI00_007916496 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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