PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

1L. 0 TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAD * 11142

47 Hudson Street, Ossining, New York 10562 NVLAP 4 200083-0 AIHA s 100147 I—" PCM AIR SAMPLE RESULTS •

Client: Bovis Lend Lease Date Collected: 05/23/02 Date Rec'd (lab): 05/24/02 Project #: MBO-025AB Analysis Date: 05/24/02 Analyst: D. McCart 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

tion: Sample Concentration a Sample #: Sample Loca Type 02PCM Volume f/cc

Outside Work Area 45th Floor inside During 14247 1200 0.0082 279 Airlock Outside Work Area 45th 280 Floor During 14248 1200 0.0053 Freight Elevator Lobby Outside Work Area 6th Floor MER During 14249 1200 0.0084 281 Inside Airlock Outside Work Area 6th Floor MER During 14250 1200 0.0106 282 Freight Elevator Lobby Outside Work Area Clean Room of During 14251 1300 <0.0021 283 Remote Personal Decon Outside Work Area Remote Waste During 14252 1300 0.0021 284 Decon Outside Work Area 56th Floor Inside During 14253 1300 0.0030 285 Airlock Outside Work Area 56th 286 Floor During 14254 1300 0.0028 El Freight Elevator Lobby Outside Work Area 49th Floor Inside During 14255 1300 0.0026 287 Airlock Outside Work Area 49th Floor During 14256 1300 <0.0021 288 Freight Elevator Lobby Outside Work Area 48th Floor Inside During 14257 1300 0.0034 289 Airlock Outside Work Area 48th 290 Floor During 14258 1300 0.0028 Freight Elevator Lobby • Limit of quantitation based on volume of air collected and 5.5 8100 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 McCall - Laboratory Director

Page 1 of 1

NYC-WTC 000103258