PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

• , TESTWELL LABORATORIES, INC. Environmental Laboratory NYSeAP# 11142 9116 47 Hudson Street, Ossining, New York 10562 NVLAP 0 200083-0 AINA C 100147 r--

PCM AIR SAMPLE RESULTS I Client: Bovis Lend Lease Date Collected: 05/17/02 Date Rec'd (lab): 05/20/02 Project #: MBO-025AB Analysis Date: 05/20/02 Analyst: D. McCar/ 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 #: Sample Location: -Sample"02PCMVolume Concentration Type f/cc

Outside Work Area Clean Room of During 13527 1275 <0.0021 165 Personal Decon Outside Work Area Remote Waste During 13528 1275 166 <0.0021 Decon 1 Outside Work Area 56th Floor Inside During 13529 1275 <0.0021 167 Airlock Outside Work Area 56th 168 Floor During 13530 1275 <0.0021 Freight Elevator Lobby Outside Work Area 53rd Floor Inside During 13531 1275 0.0081 169 Airlock Outside Work Area 53rd Floor During 13532 1275 0.0069 170 . Freight Elevator Lobby Outside Work Area 52nd Floor Inside During 13533 1275 0.0054 171 Airlock Outside Work Area 52nd Floor During 13534 1275 0.0063 172 Freight Elevator Lobby Outside Work Area 51st Floor Inside During 13535 1275 0.0079 173 Airlock Outside Work Area 51st Floor During 13536 1275 0.0119 174 Freight Elevator Lobby Outside Work Area 50th Floor Inside During 13537 1275 <0.0021 175 Airlock Outside Work Area 50th Fl 176 oor During 13538 1275 0.0021 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 .a 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 McCari - Laboratory Director

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NYC-WTC 000103236