OSHA air sample results chain of custody, 55 Church Street

ii LL NYC 9/11 Public Portal Document Luz I VV LL.a

Environmenta, L.ALJVI\P1I

.boratory NYSE1AP911142

47 Hudson Street, Ossining, New York 10562 NVLAP a 2000a3-o • AMA # 100147

PCM AIR SAMPLE RESULTS Client: Bovis LendL ase Date Collected: 02/15/02 • Date Rec'd (lab): 02/16/02 Project #: MBO-025AB Analysis Date: 02/16/02 Analyst: L. Chivarini 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 02PCM # Volume I Duration Concentration Type Location (min.) f/cc

Leonard Lewis _ Personal —Entire 02Pers _ 2874 75 30 0.0360 STEL Building

Leonard Lewis Personal Entire 04Pers -- - -------_.pll 2876 325 130 0.0083 Building

._._..Leanard_Lewis._._._.. Personal Entire 07Pers 2879 312 130 0.0086 PII TWA Building

._._.L.eanard.LP_w. ._._.. Personal Entire 10Pers 2882 400 160 0.0067 Building

12 Blank Blank N/A 2884 0 0 N/A

13 Blank Blank N/A 2885 0 0 N/A

Total Duration Sampled (min.) 450 Short Term Exposure Limit (STEL) 0.0361 8 hr. Time Weighted Average (TWA) 0.009,

(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, cr by an equivalent method.

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

* 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 000103529