NYC-WTC_000207730

NYC 9/11 Public Portal Document Aug 30 02 04:35p PSC 610-321-9667 p. 5

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING PSC ■ NY DOHAtELAC 10903 ■NJ0EPPAD20 •EPA41VLAP101262-0 •AIHA ACCREDITATION NO. 100439 • PA DEP D6.3S3 • CT OPH PHn238 •NCDENRS99 Analytical Results for ATC Associates WorkOrder: R02080860 Client Reference: 19125-0340

Analjle Concentration Limit of Test Date .Analyzed Detection Method /Analyst (bfi) : (mg/m’) : (ppm) (Ug)

Client ID: ATC-0827-1 M-VOC2 Lab ID: -02A Date Sampled; 8/27/02 Matrix: Charcoal AirVoUL): 12(1

1,1,1 -T richloroethane <20 <0,17 <0.031 20 OSHA7 08/29/2002 JLS

1,2-Dichloroe thane <20 <0.17 <0.041 20 OSHA7 08/29/2002 JLS

A Hydrocarbons, Total <20 <0.17 <0.047 20 OSHA7 08/29/2002 JLS

Acetone <20 <0.17 <0.070 20 OSHA7 08/29/2002 JLS

B Hydrocarbons. Total <20 <0.17 <0.044 20 OSHA7 08/29/2002 JLS

<20 <0.17 <0.052 20 OSHA7 08/29/2002 JLS Benzene Chlorobenzene <20 <0.17 <0.036 20 OSHA7 08/29/2D02 JLS I Chloroform <20 <0.17 <0.034 20 OS HA 7 08/29/2002 JLS

Ethylbenzene <20 <0.17 <0.033 20 OSHA7 08/29/2002 JLS

Hexane <20 <0.17 <0.047 20 OSHA7 08/29/2002 JLS

Isopropylbenzene <20 <0.17 <0.034 20 OSHA7 08/29/2002 JLS

Methylene Chloride <20 <0.17 <0.048 20 OSHA7 08/29/2002 JLS

Pentane <20 <0.17 <0.055 20 OSHA7 08/29/2002 JLS

Styrene <20 <0.17 <0.039 20 OSHA7 08/29/2002 JLS

Tetra ch loroethere <20 <0.17 <0.025 20 OSHA7 08/29/2002 JLS

Toluene <20 <0.17 <0.044 20 OSHA7 08/29/2002 JLS

Trichloroethene <20 <0.17 <0.031 20 OSHA7 08/29/2002 JLS

Xylenes, Total <20 <0.17 <0.038 20 OSHA7 08/29/2002 JLS

Page 2 of 4

CITY_21MC100_003015792

NYC-WTC_000207731