NYC-WTC_000210609

NYC 9/11 Public Portal Document

ATC Associates ioe. 104 E. 25th St., 10th Root, New York, NY 10010-2S17 (212) 353-8280 Fax (212) 353 8306

Air Samples Phase Contrast Microscopy (PCM) Results

Client Name ; Airtek Environmental Corp. Page : 2 CLient No. ! 15495 ELAP No. : 10879 Project Name ; EM&CA/Lions Head Develop. NVLAP No. : 1187 Project No. : 15495-3041 Microscope #: MYC0643 Project Address: Lions Head Development Method : NIOSH 7400/A Rules 53 Park Place, NY Revision #3

Sample Batch Analyzed San^sle Location Type Collect Total Plow Total Results No. No. by Date Time Rate Volume Work Area In/Out Location Min. L/Min. Liters F/c.c. 310 6630 BE 53 Park Pl/3-4 floors ISWA 3rd fl, room I living room Pinal 12/12/01 130 15.00 1950 <0.003 311 6830 BE 53 Park Pl/3-4 floors ISWA 3rd fl, room I bedroom Pinal 12/12/01 130 15.00 1950 0.004 312 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room I kitchen Pinal 12/12/01 130 15.00 1950 <0.003 313 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room J living room Pinal 12/12/01 132 15.00 1980 <0.003 314 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room J kitchen Pinal 12/12/01 132 15.00 1980 <0.003 315 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room J bathroom Pinal 12/12/01 132 15.00 1980 <0.003 316 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room K bedroom Pinal 12/12/01 133 15.00 1995 <0.003 317 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room K living room Pinal 12/12/01 133 15.00 1995 <0.003 318 6830 EE 53 Park Pl/3-4 floors ISWA 3rd fl, room K kitchen Pinal 12/12/01 133 15.00 1995 <0.003 319 6830 BE 53 Park Pl/3-4 floors OSWA 3rd fl, by elevator Pinal 12/12/01 134 15.00 2010 <0.002 320 6830 EE 53 Park Pl/3-4 floors OSWA 3rd fl, by exit B Pinal 12/12/01 134 15.00 2010 <0.002 321 6830 EE 53 Park Pl/3-4 floors OSWA 3rd fl, by exit A Pinal 12/12/01 134 15.00 2010 <0.002 322 6830 EE 53 Park Pl/3-4 floors OSWA 3rd fl, corridor N Pinal 12/12/01 136 15,00 2040 <0.002 323 6830 EE 53 Park Pl/3-4 floors OSWA 3rd fl, corridor S Pinal 12/12/01 136 15.00 2040 <0.002

LEGEND O * OSWA -Oirttide Work Area ISWA . Ifttide Work Area H Min. - Time In Minutes c.c. * Cubic Centimeter L * Lhers F - Fibers S PEL * Permiseible Exposure Limit O **Results are in actual Rbers/c.c. or as limit of quantitation whichever is higher. O Note - Action criteria for area eamplw Is 0.01 flbers/c.c. o - For personal samples, PELiOSHA) Is 0.1 flbers/c.c. I o o Laboratory Director / Approved Signatory N) CO

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NYC-WTC_000210610