PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

LL S TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP # 11142

47 Hudson Street, Ossining, New York 10562 NVLAP 8 200083-0 AIHA x

100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/22/02 Date Recd (lab): 05/23/02 Project #: MBO-025AB Analysis Date: 05/23/02 Analyst: D. McCarl Sample Location Millenium Hilton @ WIC 0 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 252 During 14049 1300 <0.0021 Remote Personal Decon Outside Work Area Remote Waste During 14050 1300 <0.0021 253 Decon Outside Work Area 56th Floor Inside During 14051 1300 0.0034 254 Airlock Outside Work Area 56th Floor During 14052 1300 0.0060 255 Freight Elevator Lobby Outside Work Area 49th Floor Inside During 14053 1300 0.0038 256 Airlock Outside Work Area 49th 257 Floor During 14054 1300 0.0025 Freight Elevator Lobby Outside Work Area 48th Floor Inside During 14055 1300 0.0070 258 Airlock •Outside Work Area 48th 259 Floor During 14056 1300 0.0057 Freight Elevator Lobby Outside Work Area 47th Floor Inside During 14057 1300 0.0040 260 Airlock Outside Work Area 47th Floor During 14058 1300 0.0041 261 Freight Elevator Lobby Outside Work Area 6th Floor MER During 14059 1300 0.0079 262 Inside Airlock Outside Work Area 6th Floor MER During 14060 1300 0.0106 263 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 certificate of analysis/report shall not be reproduced except in full, without the written approval of Testwell Laboratories, Inc.

Deborah McCarl - Laboratory Director

Page 1 of 1

t

NYC-WTC 000103252