NYC-WTC_000209493

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. Environmental Laboratory 11142 47 Hudson Street, Ossining, New York 10562 NVUM> S 200083-0 AIKA t 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 Chiaverini 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 138 During 13114 1275 <0.0021 Remote Personal Decon Outside Work Area Remote Wasce 139 During 13115 1275 0.0027 Decon Outside Work Area 56th Floor Inside 140 During 13116 1275 <0.0021 Airlock Outside Work Area 56th Floor 141 During 13117 1275 0.0035 Freight Elevator Lobby Outside Work Area 53rd Floor inside 142 ' During 13118 1275 0.0025 . Airlock Outside Work Area 53rd Floor 143 During 13119 1275 0.0038 Freight Elevator Lobby Outside Work Area 52nd Floor Inside 144 During 13120 1275 0.0050 Airlock Outside Work Area 52nd Floor 145 During 13121 1275 0.0035 Freight Elevator Lobby Outside Work Area 51st Floor Inside 146 During 13122 1275 0.0054 Airlock Outside Work Area 51st Ficor 147 During 13123 1275 0.0077 Freight Elevator Lobby Outside Work Area 50th Floor Inside 148 During 13124 1275 0.0042 Airlock Outside Work Area 50th Floor 149 During 13125 1275 0.0023 Freight Elevator Lobby * Limit of quantitadon based on volume of air collected snd 5.5 f/100 fields as per the NIOSH 7400 method. The report value is calculated by using the higher value of either die 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 CO data availacie jccn request. **” The laboratory has no control over air sampling coiiection. Reports are the confidential prcpery of our clients. This certificate of analysis/repcri shall not be used by trie client to ciaim product ercorsemen: by toe National Voluntary Laboratory Approval Progra.m (NVLAP) or any agency of the United States Government. This ceroficate of analysis/report shall not be reproduced except in full, without the written approval of Tesnvel Laboratories, ire.

Deborah McCarl - Laboratory Director

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