OSHA air sample results chain of custody, 55 Church Street

L NYC 9/11 Public Portal Document I t51 WLLL-LABUKAi UKItS, ING.

11L Environmental boratory 47 Hudson Street, Ossining, New York 10562 NYS ELAP # 11142

NVLAP 4 200083-0 A1'A41CO147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 02/13/02 • Date Rec'd (lab): 02/14/02 Project #: MBO-025AB Analysis Date: 02/14/02 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: Sam ple Work 02PCM # Volume Duration Concentration Type Location (min.} floc

03Pers - Leonard Lewis - Personal Entire 2711 75 30 0.6742 P11 ST EL Building Leonard Lewis Personal Entire 04Pers 2712 350 140 0.1028 PII TWA Building l..eanard1awL,._._.-. Personal Entire 14Pers 2722 288 120 0.0566 PII TWA Building

18Pers - Leonard Lerris Personal Entire 2726 414 ( 180 0.0473 PII TWA Building

20 Blank Blank N/A 2728 0 0 N/A

•

21 Blank Blank N/A 2729 0 0 N/A

Total Duration Sampled (min.) 470 Short Term Exposure Limit (STEL) 0.674: 8 hr. Time Weighted Average (TWA) 0.1040 fl

(c) Permissible exposure limits (PELS)

(c)(2) Excursion limit. The employer shall ensure that no employee is expcsed 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 (20) 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 (20) minutes, as determined by the method prescribed in Appendix A to this section, or by an equivalent method.

Respiratory Protection: Half face negative air respirator equip with HEPA 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 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

NYC-WTC 000103555