Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

• L TESTWELL LABORATORIES, INC. Environmental Laboratory 47 Hudson Street, Ossining, New York 10562 NYS EIAP * 11142 NVLAP # 200083-0 AIHA # 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 09/04/02 Date Rec'd (lab): 09/05/02 5 ample Location: Millenium Hilton Hotel @ WIC Various Floors Analysis Date: 09/06/02 55 Church Street TEM Analyst: D. McCar/ • New York, New York - — Analytical Method: AHERA F eld Technician: B. Gitman Filter Type: MCE 0.45 micron g.Grid Opening: 0.0121mm2

I- Sample #: Sample Location: Lab Number 02TEM #J Volume Coll. (liters) Grid openings Analyzed Grid Area Countable Asb. Concentration Analyzed Structures Structures/mm2 Concentration Structures/cc

378 Level C pump room 7541 1280.0 6 0.073 0 <13.77 <0.004

379 Level C Hall 7542 1280.0 6 0.073 0 <13.77 <0.004

380 3rd floor restroom 7543 1280.0 6 0.073 2 27.55 0.008

381 4th floor TFX 13 7544 1280.0 6 0.073 1 13.77 0.004

382 5th floor TFX 7 L 7545 1280.0 6 0.073 0 <13.77 <0.004

383 5th floor TFX 7 R 7546 1280.0 6 0.073 0 <13.77 <0.004

384 6th floor HVAC 7 L 7547 1280.0 6 0.073 0 <13.77 <0.004

385 6th floor HVAC 7 R 7548 1280.0 6 0.073 0 <13.77 <0.004

386 •

Blank 7549 N/A 6 0.073 0 <13.77 <0.004

387 Blank 7550 N/A 6 0.073 0 <13.77 <0.004 Structures/mmz Structures/cc I_Total Average Concentrations 15.15 < 0.004 I us 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 31untary Laboratory Approval Program (NVLAP) or any agency of the United States Govemment The laboratory has no control over air sampling collection. This c ,rti icate of analysis/report shall not be reproduced in full, without the written approval of Testwell Laboratories, Inc.

• Laboratory Director/Approved Signatory

NYC-WTC 000103694