NYC-WTC_000199112

NYC 9/11 Public Portal Document

Dec 20 01 01;54p PSC Analytical Services G103E19B67 p. 15

page 4 of 6 2ODECO1_1245_I3_N1261_1FR

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING • EPA/NVLAP 101262-0 . NY DOH/NELAC 10903 . NJ DEP 77020 . AIHA ACCREDITATION NO 100438 . PA DEP 06-353 . CT DPH PH-0238 . NO DENR 599 analytic:al services Client: ATC Associates Project: 208989 RESULT UNITS CONCENTRATION UNITS METHOD

ATC-12n-234M-VOC6 Air Volume: 120.0 L Lab Sample: 1474471

Pentane c 0.020 mg/sample < 0.056 ppm 1500 Acetone c 0.020 mg/sample < 0.070 ppm 1300 Methylene chloride < 0.020 mg/sample < 0.048 ppm 1005 Hexane < 0.020 mg/sample < 0.047 ppm 1500 Chloroform < 0 . 020 mg/sample < 0.034 ppm 1003 Methyl chloroform c 0.020 mg/sample < 0.031 ppm 1003 total other A Hydrocarbons < 0.020 mg/sample < 0.047 ppm 1500 Benzene < 0.020 mg/sample < 0.052 ppm 1501 1,2-Dichloroethane < 0.020 mg/sample < 0.041 ppm 1003 Trichloroethylene < 0.020 mg/sample < 0.031 ppm 1022 Toluene < 0.020 mg/sample < 0.044 ppm 1501 PCE (Tetrachloroethene) < 0.020 mg/sample < 0.025 ppm 1003 Chlorobenzene e 0.020 mg/sample < 0.036 ppm 1003 Ethylbenzene c 0 . 020 mg/sample c 0.038 ppm 1501 Styrene < 0.020 mg/sample c 0.039 ppm 1 501 Cumene (Isopropylbenzene) < 0.020 mg/sample < 0.034 ppm 1501 Xylenes, Total < 0.020 mg/sample c 0.038 ppm 1501 total other B Hydrocarbons c 0.020 mg/sample < 0.044 ppm 1501

ATC-12n-234M-VOC7 Air Volume: 120.0 L Lab Sample: 1474472

Pentane < 0.020 mg/sample < 0,056 ppm 1500 Acetone c 0.020 mg,'sample < 0.070 ppm 1300 Methylene chloride < 0.020 mg/sample < 0.048 ppm 1005 Hexane < 0.020 mg/sample < 0.047 ppm 1500 Chlorotorm < 0.020 mg/sample < 0.034 ppm 1003 Methyl chloroform < 0.020 mg/sample < 0.031 ppm 1003 total other A Hydrocarbons < 0.020 mg/sample < 0.047 ppm 1500 Benzene < 0.020 mg/sample < 0.052 ppm 1501 1,2-Dichloroefhane < 0 . 020 mg/sample < 0.041 ppm 1003 Trichloroethylene < 0.020 mg/sample < 0.031 ppm 1022 Toluene 4 0.020 mg/sample < 0 . 044 ppm 1501 PCE (Tetrochloroethene) < 0.020 mg/sample < 0.025 ppm 1003 Chlorobenzene < 0.020 mg/sample < 0.036 ppm 1003 Ethylbenzene < 0.020 mg/sample < 0.038 ppm 1501 Styrene < 0.020 mg/sample < 0.039 ppm 1501 Cumene (Isopropylbenzene) < 0.020 mg/sample < 0.034 ppm 1501 Xylenes, Total < 0.020 mg/sample < 0.038 ppm 1501 total other B Hydrocarbons < 0.020 mg/sample < 0.044 ppm 1501

4418 POTTSVILLE PIKE, READING, PENNSYLVANIA 19605 610-921-8833 FAX 610-921-9667

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NYC-WTC_000199115