Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

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TESTWELL LABORATORIES, INC. NY5 ELAP 0 11142 Environmental Laboratory NVLAP #200083-0 47 Hudson Street, Ossining, New York 1056Z AIHA 8 100147

• Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 08/07/02 — — Date Recd (lab): 08/07/02 Analysis Date: 08/08/02 Sample Location: Millenium Hilton Hotel @ WTC Various Floors TEM Analyst: D. McCar/ 55 Church Street Analytical Method: AHERA New York, New York

Field Technician: B. Gitman FliterType: MCE 0.45 micron vy.'.anu vNc

Sample #: Sample Location: Lab Number I Volume Coll. Grid Openings Grid Area Countable Asb. Concentration Analyzed Structures Structures/mm= Concentration Structures/cc 02TEM # (liters) Analyzed

342 Pits Room of Elevator #3 6010 1280.0 1 6 0.073 0 <13.77 <0.004

343 Pits Room of Elevator #1&#2 6011 1280.0 I 6 0.073 0 <13.77 <0.004

Pits Room of Elevator 1280.0 6 0.073 0 <13.77 <0.004 344 6012 #4 Pits Room of Elevator 6013 1280.0 6 0.073 0 <13.77 <0.004 345 #5 & #6 I 6014 0.0 0 0 0 <13.77 <0.004 346 Blank

6015 0.0 0 0 0 <13.77 <0.004 347 Blank

Total Average Concentrations 1 <13.77 1 <0.004 not be used by the client to claim product endorsement by the National This report Is the confidential property of our clients. This certificate of analysis/report shall The laboratory has no control over air sampling collection. This Voluntary Laboratory Approval Program (NVLAP) or any agency of the United States Government. be reproduced in full, without the written approval of Testwell Laboratories, Inc. certificate of analysis/report shall not •

Laboratory Director/Approved Signatory

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NYC-WTC 000103683