NYC-WTC_000209499

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP # 11142 47 Hudson Street, Ossining, New York 10562 NVLAP # 200083-0 AIHA # 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 07/19/02 Date Rec'd (lab): 07/22/02 Sample Location: Millenium Hilton Hotel (5) WTC Various Floors Analysis Date: 07/24/02 55 Church Street TEM Analyst: D. McCa/i New York, New York Analytical Method: AHERA Field Technician: B. Gitman Filter Type: MCE 0.45 micron Wg.Grid Opening: 0.0121mm’ Volume Grid Lab Number Grid Area Countable Asb. Concentration Concentration Sample #: Sample Location: Coll. Openings 02TEM # Analyzed Structures Structures/mm^ Structures/cc (liters) Analyzed

299 Lobby 4824 1280.0 6 0.073 1 13.77 0.004

300 Lobby 4825 1280.0 6 0.073 0 <13.77 <0.004

301 Lobby 4826 1280.0 6 0.073 0 <13.77 <0.004

302 Lobby 4827 1280.0 6 0.073 0 <13.77 <0.004

303 Lobby 4828 1280.0 6 0.073 0 <13.77 <0.004

304 Field Blank 4829 0.0 6 0.073 0 <13.77 <0.004

305 Field Blank 4830 - 0.0- 6 0.073 0 <13.77 <0.004

Structures/mm’ Structures/cc [Total Average Concentrations <13.77 <0.004 This report is 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. The laboratory has no control over air sampling collection. This certificate of analysis/report shall not be reproduced in full, without the written approval of Testwell Laboratories, Inc.

Laboratory Director/Approved Signatory

CITY_21MC100_002858525

NYC-WTC_000209499