NYC 9/11 Public Portal Document
.4
TESTWELL LABORATORIES, INC.
Environmental Laboratory rrrs Euv # 11142
47 Hudson Street, O{sfning, New York 10562 NVLAP # 200083.0
AIF1A # 100147
Transmission Electron Microscopy Results
Client: Bovis Lend Lease - LMB
200 Park Avenue
New York, New York Date Collected: 05/24/02
•
Date Rec'd (lab): 05/26/02
Sample Location: Millenium Hilton Hotel @ WTC (Various Floors) Analysis Date: 05/28/02
• 55 Church Street TEM Analyst: D. McCar/
New York, New York Analytical Method: AHERA
Field Technician: T. Chhetry — _ _
• Filter Type: MCE 0.45 micron
vg.Grid Opening: 0.0121mm2
Volume Grid
Lab Number Grid Area Countable Asb. Concentration Concentration
Sample #: Sample Location: Coll. Openings
02TEM # (liters) Analyzed Structures Structures/mm) Structures/cc
Analyzed
Inside Work Area 1280.0 6 0.073 0 <13.77 <0.004
49 2457
48th Floor
50
Inside Work Area
48th Floor
2458 1280.0 I 6 0.073 0 <13.77 <0.004
51
Inside Work Area
48th Floor
2459 1280.0
I 6 0.073 0 <13.77 <0.004
52
Inside Work Area
47th Floor
2460 1280.0
I 6 0.073 0 <13.77 <0.004
53
Inside Work Area
47th Floor
2461 1280.0 I 6 0.073 0 <13.77 <0.004
Inside Work Area 2462 1280.0 6 0.073 0 <13.77 <0.004
54
47th Floor
Inside Work Area <13.77 <0.004
55 2463 1280.0 6 0.073 0
47th Floor i
56
Inside Work Area
47th Floor
2464 1280.0 I 6 0.073 0 <13.77 <0.004
57 Field Blank 2465 0.0 6 0.073 0 <13.77 <0.004
58 Field Blank 2466 0.0 6 . 0.073 0 <13.77 <0.004
Structures/mm2 Structures/cc
Total Average Concentrations N/A N/A
• 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
i
NYC-WTC 000103617
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