OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

TESTWEL. _ABORATORIES, INC. • Environmental Laboratory NYSELAP911142 47 Hudson Street, Ossining, New York 10562 W1t 0200083-0 ANA # 100147

PCM AIR SAMPLE RESULTS • Client: Bovis Lend Lease Date Collected: 02/19/02 • Date Rec'd (lab): 02/20/02 Project #: MBO-025AB Analysis Date: 02/20/02 Analyst: D. Agrest 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: 02PCM # Volume Type Location _ (min.) f/cc

. ctor_Scto._._._._., Personal 18th - 22nd 05Pers 3125 75 30 0.0654 pll STEL Floors _._.Victor Soto _ Personal 18th - 22nd 07Pers 3127 300 120 0.0149 L PII TWA Floors

- tor Soto._._._._., Personal 18th - 22nd 11Pers 3131 375 150 0.0159 PII TWA Floors

15 Blank Blank N/A 3135 0 0 N/A

16 Blank Blank N/A 3136 0 0 N!A

Total Duration Sampled (min.) 300 Short Term Exposure Limit (STEL) 0.0654 8 hr. Time Weighted Average (TWA) 0.012E

(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.

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

Limit of quantitation based on volume of air collected and 5.5 f1100 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 McCall - Laboratory Director

NYC-WTC 000103512