Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

I1 LL TESTWELL LABORATORIES, INC. Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS ELAP # 11142 NVLAP # 200083-0 AIHA # 100147

Transmission Electron Microscopy Results •

Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 06/11/02 Date Rec'd (lab): 06/12/02 _ • Sample Location: Millenium Hilton Hotel @ WTC Various Floors Analysis Date: 06/14/02 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 •

Sample #: sample Location: 1 Lab Number 02TEM # Volume Coll. (liters) Grid

OpeningsI Analyzed I Grid Area Countable Asb. Concentration Analyzed Structures Structures/mm2 Concentration Structures/cc

Inside Work Area 147 2880 1280.0 6 0.073 0 <13.77 <0.004 37th Floor Inside Work Area 148 2881 1280.0 6 0.073 0 <13.77 <0.004 37th Floor Inside Work Area 149 2882 1280.0 6 0.073 0 <13.77 <0.004 37th Floor Inside Work Area 150 2883 1280.0 6 0.073 0 <13.77 <0.004 37th Floor Inside Work Area 151 2884 1280.0 6 0.073 0 <13.77 <0.004 37th Floor

152 Blank 2885 0.0 6 0.073 0 <13.77 <0.004

153 Blank 2886 0.0 ( 6 0.073 0 <13.77 <0.004

Structures/mm2 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 aoproval of Testwell Laboratories, Inc.

Laboratory Director/Approved Signatory

NYC-WTC-000103641