PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

4 TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP t 11142

47 Hudson Street, Ossining, New York 10562 NVLAP s 200083-0

1- - AIHA 4 100147

is PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/14/02 Date Recd (lab): 05/15/02 Project #: MBO-025AB Analysis Date: 05/16/02 Analyst: D. McCarl 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 w

Sample #: Sample Loca 02PCM Volume Type f/cc

Outside Work Area Clean Room of During 12690 1200 <0.0023 61 Remote Personal Decon Outside Work Area Remote Waste During 12691 1200 <0.002.3 62 Decon Outside Work Area 56th Floor Inside During 12692 1200 0.0074 63 Airlock Outside Work Area 56th 64 Floor During 12693 1200 0.0059 Elevator Lobby Outside Work Area 55th Floor Inside During 12694 1200 0.0039 65 Airlock Outside Work Area 55th 66 Floor During 12695 1200 0.0041 Elevator Lobby Outside Work Area 54th Floor Inside During 12696 1200 0.0051 67 Airlock Outside Work Area 54th 68 Floor During 12697 1200 0.0049 0 Elevator Lobby 69 Outside Work Area 53rd Floor Inside During 12698 1200 0.0106 Airlock Outside Work Area 53rd Floor During 12699 1200 0.0114 70 Elevator Lobby Outside Work Area Clean Room of During 12700 1275 0 71 0.0023 Remote Personal Decon Outside Work Area Remote Waste During 12701 1275 <0.0021 72 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 McCarf - Laboratory Director

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