OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

• 9'Ub TESTWELL LABORATORIES, INC. Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS ELAP 511142

NVLAP a

2c0083-0 AJHA 0 100147

PCM AIR SAMPLE RESULTS •

Client: Bovis Lend Lease Date Collected: 02/14!02 Date Rec'd (lab): 02/15/02 Project #: MBO-025AB Analysis Date: 02/15/02 Analyst: J. Yarusso Sample Location: The Millenium Hilton it 55 Chruch Street Analytical Method NIOSH 7400 New York, New York

Field Technician: K. Laverenko/S. Manukov

Sample #: Sample Location: Sample I -Work Duration Concentration I Type Location O-2PCM # Volume I (min.) j flcc

Danny._McTough_._., Personal Scaffold OlPers 2795 75 30 0.0360 P STEL Entire Danny McTough,_._._. Personal Scaffold 05Pers 2799 660 300 0.0047 PII TWA Entire •

11 Blank Blank N/A 2805 0 0 NIA

12 Blank Blank N/A 2806 0 0 N!A

Total Duration Sampled (min.) 330 Short Term Exposure Limit (STEL) 0.036( 8 hr. Time Weighted Average (TWA) 0.005:

(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 0 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 OC •..

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 a

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NYC-WTC 000103534