PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

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TESTWELL LABORATORIES, INC. Env4[onmental Laboratory Ws BAP # 11142 47 Hudson Street, Ossining, New York 10562 WM1.4P s

200083-a • AIHA # :00147

PCM AIR SAMPLE RESULTS Client: Davis 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: Type OZPCM Volume f/cc

138 Outside Work Area Clean Room of I During 13114 1275 <0.0021

139 Remote Personal Decon Outside Work Area Remote Wise Decon I During 13115 1275 0.0027 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 S Outside Work Area 53rd Floor Inside) 142 During 13118 1275 0.0025 Airlock f Outside Work Area 53rd 143 Floor 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 145 Floor During 13121 1275 0.0035 Freight Elevator Lobby Outside Work Area 51st Floor Inside During 13122 1275 0.0054 146 •

Airlock Outside Work Area 51st Floor 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 149 Floor During 13125 1275 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(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 cerr'ficate 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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