PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

LL TESTWELL LABORATORIES, INC. Environmental Laboratory r rs E)P * 11142 47 Hudson Street, Ossining, New York 10562 N" #200083-0 A1HA s :00147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/29/02 Date Rec'd (lab): 05/30/02 Project #: MBO-025AB Analysis Date: 05/30/02 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 Location: Concentration Sample 02PCM Volume . Type f/cc

Outside Work Area Clean Room of 347 During 14726 1200 0.027 • Remote Personal Decon 'Outside Work Area Remote Waste During 14727 1200 <0.0023 348 Decon Outside Work Area 43rd Floor Inside 349 During 14728 1200 <0.0023 Airlock Outside Work Area 43rd Floor During 14729 1200 <0.0023 350 Freight Elevator Lobby Outside Work Area 42nd Floor Inside During 14730 1200 351 <0.0023 Airlock Outside Work Area 42nd Floor During 14731 1200 352 <0.0023 Freight Elevator Lobby Outside Work Area 41st Floor Inside 353 During 14732 1200 0.0025 • Airlock Outside Work Area 41st Floor During 14733 1200 0.0033 354 Freight Elevator Lobby Outside Work Area 5th Floor Inside 355 During 14734 1200 0.0047 • Airlock Outside Work Area 5th Floor Freight During 14735 1200 0.0029 356 Elevator Lobby Outside Work Area Clean Room of During 14736 1350 0.0038 0 357 Remote Personal Decon Outside Work Area Remote Waste During 14737 1350 <0.0020 358 Decon ' 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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NYC-WTC 000103271