OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document

LL TESTWELI LABORATORIES, INC. Environmental _..boratory Nv3ELAP511142 •

47 Hudson Street, Ossining, New York 10562 NvL. a 200083-o AIHA a 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 I Work Duration Concentration 02PCM # Volume Type Location (min.) f/cc

Sachowski, David Personal Entire 02Pers - ---------- ------------ 3221 75 30 0.0654 STEL Building Sachowski, David Personal Entire 04Pers - ----------- --- 3223 300 120 0.0139 I._.-.-.-.-.-.-.P!!._.-...-.-.-.... TWA Building Sachowski. David_._._. Personal Entire 12Pers _ pil 3231 432 180 0.0380 TWA Building

Sachowski David Personal Entire 17Pers '------------- 3236 352 160 0.0390 PII TWA Building

19 Blank Blank N/A 3238 0 0 N/A

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

Total Duration Sampled (min.) 490 Short Term Exposure Limit (STEL) 0.065s 8 hr. Time Weighted Average (TWA) 0.034E

(c) Permissible exposure limits (PELS)

(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 itimeter 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 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.

with HEPA

' 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 (t'1VLAP) 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 Testweil Laboratories, Inc.

Deborah McCall - Laboratory Director

NYC-WTC 000103484