PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

L 7Jj TESTWELL LABORATORIES, INC. Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS EW7 4 11142

NVLAP s 200083-0 AIHA s 100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/31/02 Date Rec'd (lab): 06/03/02 Project #: MB0-025AB Analysis Date: 06/03/02 Analyst: A. Sokol 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 Concentration P #: Sample P Location: 02PCM Type Volume f/cc

Outside Work Area Clean Room of 391 During 15337 1200 <0.0023 Remote Personal Decon Outside Work Area Remote Waste During 15338 1200 0.0031 392 Decon Outside Work Area 43rd Floor Inside 393 During 15339 1200 <0.0023 Airlock Outside Work Area 43rd Floor 394 During 15340 1200 0.0027 Freight Elevator Lobby Outside Work Area 42nd Floor Inside 395 During 15341 1200 <0.0023 Airlock Outside Work Area 42nd Floor During 15342 1200 0.0031 396 Freight Elevator Lobby 397 Outside Work Area 41st Floor Inside Airlock During 15343 1200 0.0033 Outside Work Area 41st Floor During 15344 1200 <0.0023 398 Freight Elevator Lobby 399 Outside Work Area 5th Floor Inside Airlock During 15345 1200 0.0037 Outside Work Area 5th Floor Freicht During 15346 1200 0.0035 400 Elevator Lobby Outside Work Area Clean Room of During 15347 1350 <0.0020 401 Remote Personal Decon Outside Work Area Remote Waste During 15348 1350 0.0022 402 Decon - Limit or quanutation oasea on volume or 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 & o 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 McCart . Laboratory Director

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