PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

0 TESTWELL LABORATORIES, INC. Environmental Laboratory NYS MAP a 11142

47 Hudson Street, Ossining, New York 10562 NVLAP.1200083-0 .IHA 0 100147

• PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/14/02 Date Rec'd (lab): 05/15/02 Project #: MBO-025AB Analysis Date: 05/16/02 Analyst: D. McCar/ • 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

tion: Sample Concentration r Sample #: Sample Loca 02PCM Volume Type f/cc

Outside Work Area 56th Floor Inside 73 During 12702 1275 0.0023 • Airlock Outside Work Area 56th Floor 74 During 12703 1275 0.0085 Elevator Lobby Outside Work Area 55th Floor Inside 75 During 12704 1275 0.0025 Airlock Outside Work Area 55th Floor 76 During 12705 1275 0.0048 Elevator Lobby Outside Work Area 54th Floor Inside 77 During 12706 1275 0.0040 Airlock Outside Work Area 54th Floor During 12707 1275 0.0042 78 Elevator Lobby 79 Outside Work Area 53rd Floor Inside During 12708 1275 0.0110 Airlock Outside Work Area 53rd Floor During 12709 1275 0.0100 80 Elevator Lobby Outside Work Area 52nd Floor Inside During 12710 1075 0.0073 81 Airlock Outside Work Area 52nd .82 Floor During 12711 1075 0.0059 Elevator Lobby Outside Work Area 51st Floor Inside During 12712 1075 0.0057 83 Airlock Outside Work Area 51st Floor During 12713 1075 <0.0025 84 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 McCarl - Laboratory Director

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