OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

TESTWELJ ,LABORATORIES, INC. Environmental ~.Aboratory NYS ELAP # 11142

9Db 47 Hudson Street, Ossining, New York 10562 NVLAP # 200083-0 AIHA # 1C0147

PCM AIR SAMPLE RESULTS Client: Bovis Lend Lease Date Collected: 02/13102 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 Work Duration Concentration Sample #: Sample Location: 02PCM # Volume Type Location (min.) f/cc

~SachowskitiDavid Personal Entire 01Pers 2709 75 30 0.7809 Building Sachowski, David Personal Entire 02Pers 2710 375 150 0.0052 Pii TWA Building

Sachowski,_Dav_id_, Personal Entire 13Pers 2721 288 120 0.0060 PII TWA Building Sachowski. David-.-., Personal Entire 19Pers PII 2727 414 180 0.0964 TINA 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.) 480 Short Term Exposure Limit (STEL) 0.7805 8 hr. Time Weighted Average (TWA) 0.0881

(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.

S 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 cur 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.

A Deborah McCart - Laboratory Director

NYC-WTC 000103552