PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

C TESTWELL LABORATORIES, INC. Environmental Laboratory m's s P* 11142 47 Hudson Street, Ossining, New York 10562 NVLAP : 200083-0 AIWA D :00147 f--

PCM AIR SAMPLE RESULTS 0 Client: Bovis Lend Lease Date Collected: 05/20/02 Date Rec'd (lab): 05/22/02 Project #: MBO-025AB Analysis Date: 05/22/02 Analyst: J. Yarusso Sample Location Millenium Hilton @ WTC 55 Chruch Street Analytical Method: NIOSH 7400 New York, New York Various Floors Sample Condition Acceptable? YES Field Technician T. Chhetry

Sample #: ple Concentration Sample Location: Sam 02PCM [Volume Type f/cc

192 VOID During

193 VOID During Outside Work Area Clean Room During 13859 1300 0.0030 194 Remote Personal Decon Outside Work Area Remote Waste During 13860 1300 0.0028 195 Decon Outside Work Area 56th Floor Inside During 13861 1300 0.0032 196 Airlock Outside Work Area 55th Floor During 13862 1300 0.0038 197 Freight Elevator Lobby Outside Work Area 50th Floor Inside During 13863 1300 0.0030 198 Airlock Outside Work Area 50th 199 Poor During 13864 1300 0.0064 • Freight Elevator Lobby Outside Work Area 49th Floor Inside During 13865 1300 0.0023 200 Airlock Outside Work Area 49th 201 Floor During 13866 1300 0.0041 Freight Elevator Lobby Outside Work Area 48th Floor Inside During 13867 1300 0.0021 202 Airlock Outside Work Area 48th 203 Floor During 13868 1300 0.0045 Freight Elevator Lobby Limit of quantitation based on volume of air collected and 5.5 f/100 fields as per the NIOSH 7400 method. The report value is calculated by using the higher value of either the actual concentration or the limit of quantification reported at P(0.05) indicating the 95% confidence level at 2 standard deviations. " Sample information is provided by the client & presented.as stated. "' Laboratory QC data available upon request. "" The laboratory has no control over air sampling collection. Reports are the confidential property of our clients. This certificate of analysis/report shall not be used by the client to claim product endorsement by the National Voluntary Laboratory Approval Program (NVLAP) or any agency of the United States Government. This certificate of analysis/report shall not be reproduced except in full, without the written approval of Testwell Laboratories, Inc.

Deborah McCall - Laboratory Director

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NYC-WTC 000103241