Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

I.

• 1 TESTWEL1LLABORATORIES, INC. Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS ELAP t 11142 NVLAP J 200083-0 - AIHA s 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 05/16/02 Date Rec'd (lab): 05/16/02 sample Location: Millenium Hilton @ WTC (Various Floors) Analysis Date: 05/17/02 55 Church Street TEM Analyst: D. McCarl New York, New York — — Analytical Method: AHERA Field Technician: T. Chhetry Filter Type: MCE 0.45 micron vg.Grid Opening.- 0.0121mm2

Sample #: Sample Location: Lab Number Volume Coll. I openings Grid Grid Area Countable Asb. Concentration Concentration 02TEM # (liters) Analyzed Analyzed Structures Structures/mm2 Structures/c:

Inside Work Area 13 2197 1520.0 5 0.061 0 <16.53 <0.004 53rd Floor Inside Work Area 14 2198 1520.0 5 0.061 0 <16.53 <0.004 53rd Floor Inside Work 15 Area 2199 1520.0 5 0.061 0 <16.53 <0.004 53rd Floor Inside Work Area 2200 ,520.0 5 0.061 1 16.53 0.004 16 53rd Floor Inside Work 17 Area 2201 1520.0 5 0.061 0 <16.53 <0.004 53rd Floor .. Inside Work Area 18 2202 1400.0 5 0.061 0 <16.53 <0.004 52nd Floor 19 Inside Work Area 2203 1400.0 5 0.061 0 <16.53 <0.004 52nd Floor Inside Work Area 20 2204 1400.0 5 0.061 0 <16.53 <0.004 52nd Floor Structures/mm2 Structures/c Total Average Concentrations 26.53 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. Thi certificate of analysis/report shall not be reproduced in full, without the written approval of Testwell Laboratories, Inc.

Laboratory Director/Approved Signatory

___ __ __ •

NYC-WTC 000103609