Air sample results for 55 Church Street, undated

NYC 9/11 Public Portal Document

JILL r-O I YVL CL LAD.JI%A t uiciC , Environmental Laboratory 47 Hudson Street, Ossining, New ...rk 10562 NYS ELM 611142 NVLAP 6200083-0 AIHA 6100147

Transmission Electron Microscopy Results Client•. Bovis Lend Lease Project #: MBO-025AB 200 Park Avenue •

New York, New York Date Collected: 10/13/01 - Date Reed (lab): 10/13101 Sample Location: The Millenium Hilton Hotel Analysis Date: 10/14/01 55 Church Street TEM Analyst: D. MCCart New York, New York Analytical Method: AHERA EPA 40 CFR Part 763 • Field Technician: M. Sokolinskiy & B. Feldman

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

Lab Number Volume Coll. Grid Sample #: Sample Location: Grid Area Countable Asb. Concentration Concentration 01TEM # Openings (liters) Analyzed Structures Structures/mm' Structures/cc Analyzed

13A 2nd Floor Landing Dock 3709 1260.0 6 0.073 0 <13.77 <0.004

14A 2nd Floor by Elevator 2D 3710 1260.0 6 0.073 0 <13.77 <0.004

15A 2nd Floor by Purchasing Department 3711 1260.0 6 0.073 0 <13.77 <0.004

16A C Level by Stairway A 3712 1260.0 6 0.073 0 <13.77 <0.004

17A C Level by Drinking Fountain 3713 1260.0 6 0.073 0 <13.77 <0.004

18A C Level at Security Office 3714 1260.0 6 0.073 0 <13.77 <0.004

19A Blank 3715 0.0 6 0.073 0 N/A N/A

20A Blank 3716 0.0 6 0.073 0 N/A N/A

a Structures/mm2 Structures/cc TotaF Average Concentrations <13.77 <0.004

This report Is the confidential property of our clients. This certificate of analysis/report shag 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. Coovriaht ® 2001 Testwell Laboratories Inc. 8

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NYC-WTC 000104009