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 A 200083-0 AIHA 8 100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/09/02 Date Rec'd (lab): 05/13/02 Project #: MBO-025AB Analysis Date: 05/13/02 Analyst: D. Agrest Sample Location Milleniurn Hilton @ WTC 0 55 Chruch Street Analytical NIOSH 7400 New York, New York Various Floors Sample Condition Acceptable? YES Field Technician T. Chhetry

Sample #: Sample Location: I Sample Type 02PCM #1Volume Concentration f/cc 1 1 Outside Work Area Clean Room of During 12242 900 0.0063 Personal Decon

.2 Outside Work Area Waste Decon During 12243 900 0.0046 0 3 Outside Work Area 56th Floor Inside During 12244 900 0.0076 Airlock a 4 Outside Work Area 56th Floor During 12245 900 0.0052 Elevator Lobby 5 Outside Work Area 55th Floor Inside During 12246 900 0.0065 A Airlock 6 Outside Work Area 55th Floor During 12247 900 0.0068 • Elevator Lobby 7 Outside Work Area 54th Floor Inside During 12248 900 0.0054 Airlock 8 Outside Work Area 54th Floor During 12249 900 0.0093 Elevator Lobby 9 Outside Work Area Staircase During 12250 900 0.033 Landing to 53rd Floor Outside Work Area Outside Bldg, During 12251 900 <0.0030 10 Rector St. side Entrance

S 11 Field Blank Blank 12252 0 <0.0030

12 Field Blank Blank 12253 0 <0.0030 * 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 analysis/report shall not be reproduced except in full, without the written approval of Testwell Laboratories, Inc. '~j

Deborah McCan - Laboratory Director

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