Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

• L TESTWELL LABORATORIES, INC. Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS EAP # NvtAv # 11142 200083-0 ALMA # 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 08/02/02 Date Rec'd (lab): 08/05/02 _ • Sample Location: Millenium Hilton Hotel @ WTC Various Floors Analysis Date: 08/06/02 55 Church Street TEM Analyst: D. McCarl New York, New York Analytical Method: AHERA Field Technician: B. Gitman Filter Type: MCE 0.45 micron • vg.Grid Opening: 0.0121mm2 Volume Grid Lab Number Grid Area uCountable Asb.I Concentration I Concentration Sample #: Sample Location: ( Coll. 02TEM # Openings Analyzed Structures Structures/mm2 Structures/cc liters) Analyzed

0 328

329 Level SC West Section

Level SC West Section 5764

5765 1280.0

1280.0 1 6

6 0.073

0.073 0

0 <13.77

<13.77 <0.004

<0.004

330 Level SC West Section 5766 1280.0 6 0.073 0 <13.77 <0.004

331 Level SC West Section 5767 1280.0 6 0.073 0 <13.77 <0.004

332 Level SC West Section 5768 1280.0 6 0.073 0 <13.77 <0.004

333 Blank 5769 0.0 6 0.073 0 <13.77 <0.004

334 Blank 5770 0.0 6 0.073 0 <13.77 <0.004 Structures/mm2 Structures/cc Total Average Concentrations <13.77 <0.004 i nis report is me conncenuai property or our clients. i nis ceruncate or analysis/report snail 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

NYC-WTC 000103679