Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

L TESTWELL LABORATORIES, INC. -I_i Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS ELAP * 11142 NVLAP # 200083.0 AIHA # 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 08/21/02 Date Rec'd (lab): 08/22/02 Sample Location: Millenium Hilton Hotel @ WTC Various Floors Analysis Date: 08/23/02 55 Church Street TEM Analyst: D. McCarl New York, New York Analytical Method: AHERA Field Technician: B. Gitman Filter Type: MCE 0.45 micron 1vg.Grld Opening: 0.0121mm2

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

371 Pits of freight elevator 6948 1280.0 6 0.073 0 <13.77 <0.004 372 Level SC, C, L 6949 1280.0 6 . 0.073 0 <13.77 <0.004 373 Level SC, C, L 6950 1280.0 6 0.073 0 <13.77 <0.004 374 Level SC, C, L 6951 1280.0 6 0.073 0 <13.77 <0.004 375 Level SC, C, L 6952 1280.0 6 0.073 0 <13.77 <0.004 376 Blank 6953 N/A 6 0.073 0 <13.77 <0.004 377 Blank 6954 N/A 6 0.073 0 <13.77 <0.004 Structures/mm2 Structures/cc Total Average Concentrations < 13.77 < 0.004 Thi c nn.t is fhe.......................................... . . . . . . .. .

- -••~••w• • • • aua,ra,yi aNL„ L ai ian nUL ue use oy the cuent to ciaim product Voluntary Laboratory Approval Program (NVLAP) or any agency of the United States Government. endorsement by the National 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

NYC-WTC 000103692