PCM air sample results chain of custody, 200 Park Avenue

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. • LL Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 r WSELAPs 11142 rM.AP #200083-0 AIHA x 100147

• PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/22/02 Date Rec'd (lab): 05/23/02 Project #: MBO-025AB Analysis Date: 05/23/02 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

Sample #: Sample Location: Sample 02PCM Concentration •

Volume Type f/cc

Outside Work Area Clean Room of During 14037 1200 0.0025 240 Remote Personal Decon Outside Work Area Remote Waste During 14038 1200 0.0025 241 Decon Outside Work Area 56th Floor Inside During 14039 1200 0.0035 242 Airlock Outside Work Area 56th Floor During 14040 1200 0.0041 243 Freight Elevator Lobby Outside Work Area 49th Floor Inside 244 Airlock During 14041 1200 0.0047 Outside Work Area 49th 245 Floor During 14042 1200 0.0039 Freight Elevator Lobby Outside Work Area 48th Floor Inside During 14043 1200 0.0069 246 Airlock • Outside Work Area 48th 247 Floor During 14044 1200 0.0063 •

Freight Elevator Lobby Outside Work Area 47th Floor Inside During 14045 1200 0.0035 248 Airlock Outside Work Area 47th 249 Floor During 14046 1200 0.0043 Freight Elevator Lobby Outside Work Area 6th Floor MER During 14047 1200 0.0037 250 •

Inside Airlock Outside Work Area 6th Floor MER During 14048 1200 0.0067 251 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. "' L'aboratory 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

Page 1 of 1

NYC-WTC 000103251