NYC 9/11 Public Portal Document
91lb TESTWELL LhdORATORIES, INC.
Environmental Laboratory
47 Hudson Street, Ossining, New York 10562
NYS ELAP 4 11142
NVLAP s 200083-0
ALMA 0 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 (55th & 54th 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:
I Lab Number Volume
Coll.
Grid
Openings
Grid Area Countable Asb. Concentration Concentration
02TEM # Analyzed Structures Structures/mm2 Structures/cc
(liters) Analyzed
1 Inside Work Area
2175 1280.0 6 0.073 0 <13.77 <0.004
55th Floor
2 Inside Work Area
2176 1280.0 6 0.073 0 <13.77 <0.004
55th Floor
Inside Work Area
3 2177 1280.0 6 0.073 0 <13.77 <0.004
55th Floor
4 Inside Work Area
2178 1280.0 6 0.073 0 <13.77 <0.004
55th Floor
5 Inside Work Area
2179 1280.0 6 0.073 1 13.77 0.004
55th Floor
6 Inside Work Area
2180 1280.0 6 0.073 1 13.77 0.004
54th Floor
7 Inside Work Area
2181 1280.0 6 0.073 3 41.32 0.012
54th Floor.
8 Inside Work Area
2182 1280.0 6 0.073 0 <13.77 <0.004
54th Floor
9 Inside Work Area
2183 1280.0 6 0.073 0 <13.77 <0.004
54th Floor
Inside Work Area
10 2184 1280.0 6 0.073 0 <13.77 <0.004
54th Floor.
11 Field Blank 2185 0.0 6 0.073 0 <13.77 <0.004
12 Field Blank . 2186 0.0 6 0.073 0 <13.77 <0.004
Structures/mm2 Structures/c
Total Average Concentrations 16.07 0.005
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
a '
NYC-WTC 000103607
OCR can misread numbers and units. Confirm readings against the page image before using them.