NYC-WTC_000206714

NYC 9/11 Public Portal Document

TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP #11142 47 Hudson Street, Ossining, New York 10562 NVLAP # 200033-3 AIHA# 100147

Transmission Electron Microscopy Results Client; Warren & Panzer Engineers, P.C. Project It: NUF-001AB 228 East 45th Street New York, NY 10017 Date Collected: 07/25/02 Date Rec'd (lab): 07/26/02 Sample Location: NYC DEP Analysis Date: 07/30/02 Side Facades TEM Analyst: D. McCar! 30 W Broadway Analytical Method; AHERA

Field Technician: Client

Filter Type: MCE 0.45 micron Avg.Grid Opening: 0.0121mm’

Grid Lab Number Volunne Grid Area Countable Asb. Concentration Concentration Sample tf: Sample Location: Openings 02TEU # Coll, (liters) Analyzed Structures Structures/mm’ Structures/cc Analyzed

01 By Entrance 5228 1440.0 5 0.061 0 <16.53 <0.004

02 By Decon 5229 1440.0 5 0.061 0 <16.53 <0.004

03 Inside Work Area West 5230 1440.0 5 0.061 . 0 <16.53 <0.004

Inside Work Area 04 Center 5231 1440.0 5 0.061 0 <16.53 <0.004

05 Inside Work Area East 5232 1440.0 5 0.061 0 <16.53 <0.004

06 BF 5233 0.0 N/A 0.048 N/A N/A N/A

07 BF 5234 0.0 N/A 0.048 N/A N/A N/A

08 Copped Blank 5235 0.0 N/A 0.048 N/A N/A N/A

Structures/mm’ Structures/cc’ [Total Average Concentrations <16.53 <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. This certificate of analysis/report shall not be reproduced in full, without the written approval of Testwell Laboratories, Inc. Copyright © 2002 Testweil Laboratories, Inc.

Laboratory Uirector/Approveo Signatory

CITY_21MC100_002994169

NYC-WTC_000206714