OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

• TESTWELL LABORATORIES, INC. Environmental Laboratory ?rrs EL.P x 11142 47 Hudson Street, Ossining, New York 10562 MILAP # 2orl a3-0 100147

PCM AIR SAMPLE RESULTS 0 Client: Bovis Lend Lease Date Collected: 02/12/02 Date Rec'd (lab): 02/13/02 Project #: MBO-025AB Analysis Date: 02/13/02 Analyst: D. Agarest 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: 1 Sample Type .Work Location 02PCM # Volume Duration Concentration (min.) f/cc

Michael Carlson Personal Entire 11Pers 2611 75 30 0.0523 P. _ _ _i STEL Building

Michael._ar(;;Qn._. Personal Entire 12Pers 2612 552 240 0.0148 Building

20 Blank Blank N/A 2620 0 0 N/A

21 Blank Blank N/A 2621 0 0 N/A

Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.052: 8 hr. Time Weighted Average (TWA) 0.010'

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, cr 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, cr by an equivalent method.

Protection: Half face negative air resoirator equip with HEPA

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 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 McCarl - Laboratory Director S.

'A

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NYC-WTC 000103592