PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

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-1 TESTWELL LABORATORIES, INC. Environmental Laboratory NYs EL'P s 11142

[ 47 Hudson Street, Ossining, New York 10562 NVLAP * 200083-0 ALMA a 100147

• PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/31/02 Date Rec'd (lab): 06/03/02 Project #: MBO-025AB Analysis Date: 06/03/02 Analyst: A. Sokol Sample Location Millenium Hilton @ WTC i

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 02PCM #jVolume Concentration Type f/cc

Outside Work Area 43rd Floor Inside During 15349 1350 0.0025 403 Airlock Outside Work Area 43rd Floor During 15350 1350 <0.0020 404 Freight Elevator Lobby Outside Work Area 42nd Floor Inside During 15351 1350 0.0029 405 Airlock Outside Work Area 42nd Floor During 15352 1350 0.0022 406 Freight Elevator Lobby Outside Work Area 41st Floor Inside During 15353 1350 0.0035 40.7 Airlock Outside Work Area 41st 408 Floor During 15354 1350 0.0024 Freight Elevator Lobby Outside Work Area 5th Floor Inside During 15355 1350 0.0036 409 Airlock Outside Work Area 5th Floor Freight During 15356 1350 <0.0020 410 Elevator Lobby Outside Work Area 40th Floor Inside During 15357 1350 0.0031 411 Airlock Outside Work Area 40th Floor During 15358 1350 0.0038 412 Freight Elevator Lobby Outside Work Area 39th Floor Inside During 15359 1350 0.0047 413 L Airlock Outside Work Area 39th Floor During 15360 1350 0.0033 414 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 & S 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 McCarf - Laborator, Director

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