PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

1b TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELA➢ # 11142

47 Hudson Street, Ossining, New York 10562 NVLAP #200083-0 r—_ AIHA s 100147 t

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/13/02 Date Rec'd (lab): 05/14/02 Project #: MBO-025AB Analysis Date: 05/14/02 Analyst: V. Binchkauskas 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 Concentration Sample #: Sample Location: 02PCM Volume Type f/cc

Outside Work Area Clean Room of 37 During 12377 1275 <0.0021 Personal Decon

38 Outside Work Area Waste Deccan During 12378 1275 <0.0021

39 Outside Work Area 56th Floor Inside During 12379 1275 <0.0021 Airlock Outside Work Area 56th Floor 40 During 12380 1275 <0.0021 Elevator Lobby Outside Work Area 55th Floor Inside During 12381 1275 0.0035 41 Airlock Outside Work Area 55th Floor During 12382 1275 0.0033 42 . Elevator Lobby Outside Work Area 54th Floor Inside 43 During 12383 1275 <0.0021 Airlock Outside Work Area 54th Floor 44 During 12384 1275 0.0069 Elevator Lobby Outside Work Area Staircase 45 During 12385 1275 0.0029 Landing to 53rd Floor Outside Work Area Outside Eldg, ' 46 During 12386 1275 <0.0021 Church St. Entrance

47 Field Blank Blank 12387 0 <0.0021

48 Field Blank Blank 12388 0 <0.0021

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.

.4 Deborah McCart - Laboratory Director

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