OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

TESTWELI--LABORATORIES, INC. Environmental Laboratory M$ELAP#11142

47 Hudson Street, Ossining, New York 10562 NVLAP 8200083-0 AIHA # 100147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 02/20/02 Date Rec'd (lab): 02/21/02 Project #: MBO-025AB Analysis Date: 02/21/02 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 Type I Location Work 02PCM # Volume 1 Duration Concentration (min.) f/cc

Sal Maddox Personal Entire 09Pers ------ --------P11 3228 75 30 0.0360 STEL Building

Sal_ Maddox_._._._._._. Personal Entire 10Pers 3229 300 120 0.0090 PII TWA Building Sal Maddox Personal Entire 15Pers ----------- --- ------------ - 3234 312 130 0.0086 PII TWA Building Sal Maddox Personal Entire 18Pers ------ - ---- ----------- - 3237 352 160 0.0885 Pil TWA Building

19 Blank Blank NIA 3238 0 0 N/A

20 Blank Blank N/A 3239 0 0 N/A

Total Duration Sampled (min.) 440 Short Term Exposure Limit (STEL) 0.036( 8 hr. Time Weighted Average (TWA) 0.036:

(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 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

NYC-WTC 000103490