PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP 0 11142

47 Hudson Street, Ossining, New York 10562 NVLAP 7 200083-0 AIHA a 100147

I PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/21/02 Date Rec'd (lab): 05/22/02 Project #: MBO-025AB Analysis Date: 05/22/02 Analyst: A. Sokol 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 #: Sample Location: Sample OZPCM Concentration Type f/cc #tvoiume[ Outside Work Area 6th Floor MER During 14000 1190 0.0056 221 Inside Airlock Outside Work Area 6th Floor MER During 14001 1190 0.0058 222 Freight Elevator Lobby Outside Work Area Clean Room of During 14002 1300 0.0021 223 Remote Personal Decon Outside Work Area Remote Waste During 14003 1300 0.0023 224 Decon Outside Work Area 56th Floor Inside During 14004 1300 0.0034 225 Airlock Outside Work Area 56th 226 Floor During 14005 1300 0.0028 Freight Elevator Lobby Outside Work Area 50th Floor Inside During 14006 1300 0.0034 227 Airlock Outside Work Area 50th 228 Floor During 14007 1300 0.0040 Freight Elevator Lobby Outside Work Area 49th Floor Inside During 14008 1300 0.0023 229 Airlock Outside Work Area 49th Floor During 14009 1300 <0.0021 230 Freight Elevator Lobby Outside Work Area 48th Floor Inside During 14010 1300 0.0026 231 Airlock Outside Work Area 48th Floor During 14011 1300 0.0028 232 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 & S 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 analysistreport shall not be reproduced except in full. without the written approval of Testwell Laboratories. Inc.

Deborah McCall - Laboratory Director

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