PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

• TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP # 11142 47 Hudson Street, Ossining, New York 10562 NVLAP # 200083-0 AIHA #100147

• PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/17/02 Date Rec'd (lab): 05/20/02 • Project #: MBO-025AB Analysis Date: 05/20/02 Analyst: D. McCar/ • 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

S Sample #: Sample Location: Sample Type JO2PCM Volume Concentration f/cc

Outside Work Area Clean Room of During 13515 1200 0.0029 153 Personal Decon 154 • Outside Work Area Remote Waste Decon I During 13516 1200 <0.0023 Outside Work Area 56th Floor Inside During 13517 1200 0.0027 155 Airlock Outside Work Area 56th Floor During 13518 1200 0.0031 156 Freight Elevator Lobby Outside Work Area 53rd Floor Inside 157 During 13519 1200 0.0049 S Airlock Outside Work Area 53rd Floor During 13520 1200 0.0061 158 Freight Elevator Lobby Outside Work Area 52nd Floor Inside During 13521 1200 0.0059 159 Airlock Outside Work Area 52nd Floor During 13522 1200 0.0090 160 Freight Elevator Lobby Outside Work Area 51st Floor Inside 161 Airlock During 13523 1200 0.0080 Outside Work Area 51st Floor During 13524 1200 OVERLOAD 162 Freight Elevator Lobby Outside Work Area 50th Floor Inside During 13525 1200 <0.002.3 163 Airlock Outside Work Area 50th 164 Floor During 13526 1200 0.0045 Freight Elevator Lobby - Limit or 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 McCart - Laboratory Director

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