NYC-WTC_000209493

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. Environmental Laboratory NYS * 11142

47 Hudson Street, Ossining, New York 10562 NVTJiP i 200083-0 AIHA ? 100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/16/02 Date Rec'd (lab): 05/18/02 Project #: MBO-025AB Analysis Date: 05/18/02 Analyst; L C/i/avefin/ 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 Concentration Sample #: Sample Location: 02PCM # Volume Type f/cc

Outside Work Area Clean Room of 126 During 13102 1200 <0.0023 Remote Personal Decon Outside Work Area Remote Waste 127 During 13103 1200 0.0045 Decon Outside Work Area 56th Floor Inside 128 During 13104 1200 0,0025 Airlock Outside Work Area 56th Floor 129 During 13105 1200 0.0041 Freight Elevator Lobby Outside Work Area 53rd Floor Inside 130 During 13106 1200 0.0037 Airlock Outside Work Area 53rd Floor 131 During 13107 1200 <0.0023 Freight Elevator Lobby Outside Work Area 52nd Floor Inside 132 During 13108 1200 <0.0023 Airlock Outside Work Area 52nd Floor 133 During 13109 1200 0.0037 Freight Elevator Lobby Outside Work Area 51st Floor Inside 134 During 13110 1200 0.0029 Airlock Outside Work Area 51st Floor 135 During 13111 1200 0.0033 Freight Elevator Lobby Outside Work Area 50th Floor Inside 136 During 13112 1200 <0.0023 Airlock Outside Work Area 50th Floor 137 During 13113 1200 <0.0023 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(Q.O5) 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 McCari - Laboratory Director

Page 1 of 1

CITY_21MC1OO_OO2858415

NYC-WTC_000209493