PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

• TESTWELL LABORATORIES, INC. Environmental Laboratory NYS EUP # 11142 47 Hudson Street, Ossining, New York 10562 rrnAa o 200083-0 -- Ail 0 100147

• PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/15/02 Date Rec'd (lab): 05/16/02 • Project #: MBO-025AB Analysis Date: 05/16/02 Analyst: L. Chiaverini • Sample Location Millenium Hilton @ WTC 55 Chruch Street Analytical NIOSH 7400 New York, New York Various Floors Sample Condition Acceptable? YES Field Technician T. Chhetry

Sample "~V Concentration Sample #: Sample Location: M Type 102 f/cc

Outside Work Area 51st Floor Inside During 12821 1200 <0.0023 102 Airlock Outside Work Area 51st Floor During 12822 1200 0.0059 103 Freight Elevator Lobby Outside Work Area 50th Floor Inside During 12823 1200 0.0065 104 Airlock Outside Work Area 50th 105 Floor During 12824 1200 0.0029 Freight Elevator Lobby Outside Work Area Clean Room of During 12825 1275 0.0038 106 Personal Decon Outside Work Area Remote Waste During 12826 1275 0.0042 107 Decon Outside Work Area 56th Floor Inside During 12827 1275 0.0069 108 Airlock Outside Work Area 56th 109 Floor During 12828 1275 <0.0021 Freight Elevator Lobby Outside Work Area 55th Floor 110 Inside During 12829 1275 0.0035 Airlock Outside Work Area 55th Flocr During 12830 1275 <0.0021 111 Freight Elevator Lobby Outside Work Area 54th Floor Inside During 12831 1275 <0.0021 112 Airlock Outside Work Area 54th Floor During 12832 1275 <0.0021 113 Freight Elevatory Lobby ' Limit of quantitation based on volume of air collected and 5.5 f1100 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

A 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.

r Deborah McCarl - Laboratory Director

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