OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

L TESTWELL LABORATORIES, INC. Environmental Laboratory 47 Hudson SSteet, Ossining, New York 10562 N•rs EUP x 11142 NVtAP 2CO083-0 AlHA x 1C0147

• PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 02/14/02 Date Rec'd (lab): 02/15/02 Project #: MBO-025AB Analysis Date: 02/15/02 Analyst: J. Yarusso • Sample Location: The Millenium Hilton 55 Chruch Street Analytical Method: NIOSH 7400 New York, New York

Field Technician: K. Laverenko/S. Manukov

Sample #: Sample Location: Sample Work Duration Concentration 02PCM # Volume Type Location (min.) f/cc

_.-._.~ulio.Millau._._._._. PersoA nal Entire 9Pers 2815 345 150 0.0185 P11 TW Building

• 10 Blank Blank N/A 2816 0 0 N/A

11 Blank Blank N/A 2817 0 0 N/A

Total Duration Sampled (min.) 150 Short Term Exposure Limit (STEL) 0.0185 8 hr. Time Weighted Average (TWA) 0.0058

(c) Permissible exposure limits (PELS)

(c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne concentration of asbestos in excess of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty (30) minutes, as determined by the method prescribed in Appendix A to this section, or by an equivalent method.

(c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne concentration of asbestos in excess of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty (30) minutes. as determined by the method prescribed in Appendix A to this section, or by an equivalent method. 0 Respiratory Protection: Half face negative air respirator equip with HE?A cartridge.

• 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 d_pim 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

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NYC-WTC 000103549