OSHA air sample results chain of custody, 55 Church Street

L NYC 9/11 Public Portal Document

TESTWEL' '_ABORATORIES, INC. • 9ll Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS ELAP # 11142

NVLAP # 200083-0 ANA # 100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 02/15/02 Date Rec'd (lab): 02/16/02 Project #: MBO-025AB Analysis Date: 02116/02 Analyst: L. Chivarini Sample Location: The Millenium Hilton 55 Chruch Street Analytical Method: NIOSH 7400 New York, New York

Field Technician: K. Laverenko/S. Manukov

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

Sachowski,David._._, Personal Entire 02Pers 2873 75 30 0.0360 Pll STEL Building Sachovmkii_.fl.avlrt.._._. Personal Entire 03Pers 2375 325 130 0.0083 PII TWA Building Sachowski, David Personal Entire 08Pers --------------PII - 2880 312 130 0.0086 - TWA Building Sachowski, David Personal Entire 11Pers 2883 400 160 0.0067 pH i TWA Building

12 Blank Blank N/A 2884 0 0 N/A

13 Blank Blank N/A 2885 0 0 NIA

Total Duration Sampled (min.) 450 Short Term Exposure Limit (STEL) 0.0360 8 hr. Time Weighted Average (TWA) 0.0091

(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 flcc) 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.

Respiratory Protection: Half face negative air respirator equip with HEPA cartridge.

• Limit of quantitation based on volume of air collected and 5.5 11100 fields as per the NIOSH 7400 method. The report value is calculated by using the higher value of either the actual concentration or thelimit 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 McCa, - Laboratory Director

NYC-WTC 000103527