Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

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L TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP # 11142 • 9'll 47 Hudson Street, Ossining, New York 10562 NVLAP # 200083-0 ANNA # 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB • 200 Park Avenue New York, New York Date Collected: 07/23/02 Date Rec'd (lab): 07/23/02 Sample Location: Millenium Hilton Hotel @ WIC Various Floors Analysis Date: 07/24/02 55 Church Street TEM Analyst: V.B. New York, New York Analytical Method: AHERA • Field Technician: B. Gitman Filter Type: MCE 0.45 micron Wg.Grld Opening: 0.0121mm2

Lab Number Volume Grid Sample #: Sample Location: 02TEM # Coll. liters Openings Grid Area Countable Asb. Concentration Concentration Anal ed An Structures Structures/mm2 Structures/cc i

Level S C Nor ectonth 306 4988 1280.0 6 0.073 0 <13.77 <0.004 Level C North East 307 4989 1280.0 6 0.073 0 <13.77 <0.004 Level C North East 308 4990 1280.0 6 0.073 0 <13.77 <0.004 Secton 46 Level C North Sedan 309 4991 1280.0 6 0.073 0 <13.77 <0.004 Level C North East 310 4992 1280.0 6 0.073 0 <13.77 <0.004 Secton 311 Field Blank 4993 0.0 6 0.073 0 <13.77 <0.004

312 Field Blank 4994— 0.0- 6 0.073 0 <13.77 <0.004 Structures/mm2 Structures/cc Total Average Concentrations <13.77 <0.004 „ r

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isireport snau not oe usea oy ine Gient 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

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NYC-WTC 000103675