NYC-WTC_000209493

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. Environmental Laboratory NYS SAP < 11142

47 Hudson Street, Ossining, New York 10562 NVWP ; 200083-0 AIHA 5 100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 05/16/02 Date Rec'd (lab); 05/18/02 Project #: MBO-025AB Analysis Date: 05/18/02 Analyst: L Chiatrerini 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 Concentration Sample #: Sample Location: 02PCM # Volume Type f/cc

150 • Field Blank Blank 13126 0 <0.0021

151 Field Blank Blank 13127 0 <0.0021

152 Field Blank Blank 13128 0 <0.0021 ' 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 ove,^ air sampling collecLon. Reports are the confidential property of our clients. This certificate of analysis/repcrt 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 anaiysis/report shall not be reproduced except in full, without the written approval of Testwell Laboratories, Inc.

Deborah McCarl - Laboratory Director

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