NYC-WTC_000229708

NYC 9/11 Public Portal Document I

Hb Environmental Laboratory 47 Hudson Street, Ossining, New . 10562 NVSELiPH !11*2 NVtAP » 200083.0

T • • « vONFiDEW Transmission Electron Microscopy Resu ts A1HA« 100147

Client: Bovis Lend Lease Project #; MBO-025AB 200 Park Avenue New York, New York Date Collected: 09/30/01 Date Rec'd (lab): 10/01/01 Sample Location: The Millenium Hilton Hotel Analysis Date: 10/08/01 55 Church Street TEM Analyst: D. McCarl New York, New York Analytical Method: AHERA ERA 40 CFR Part 763 Field Technician: M. Sokolonskiy/0. Kolendenkov

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

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

11-1 South Side of Corridor 3520 1250.0 6 0.073 19 261.71 0.081

11-2 In the Middle of Corridor 3521 1250.0 6 0.073 12 165.29 -- 0.051

11-3 North Side of Corridor 3522 1250.0 6 0.073 14 192.84 0.059

10-1 South Side of Corridor 3523 1250.0 6 0.073 3 41.32 0.013

10-2 In the Middle of Corridor 3524 1250.0 6 0.073 2 27.55 0.008

10-3 North Side of Corridor 3525 1250.0 6 0.073 18 247.93 0.076

9-1 South Side of Corridor 3526 1250.0 6 0.073 13 179.06 0.055

9-2 In the Middle of Corridor 3527 1250.0 6 0.073 12 165.29 0.051

9-3 North Side of Corridor 3528 1250.0 6 0.073 11 151.52 L 0.047

4-1 South Side of Corridor 3529 1250.0 6 0.073 4 55.10 0.017

4-2 In the Middle of Corridor 3530 1250.0 6 0.073 11 151.52 0.047

4-3 North Side of Corridor 3531 1250.0 6 0.073 2 27.55 0.008

Structures/mm’ Structures/cc [Total Average Concentrations 138.89 0.04

TWs report Is the confidential property ol our dienis. This certificate of analysis/report shall not be used by the client to claim product endorsement by the National Vohmtaiy Laboratory Approval Program (NVLAP) or any agency of rhe United States Government The laboratoiy has no control over air sampling collection. This certificate of analysis/report shaH not be reproduced in ful. withour the written approval of Testwell Laboratories, Inc. Copyright e 2001 TeslweH labofatories. Inc.

Laoofatofy uinctot/Appiona mgnatoty

CONFIDENTIAL, SUBJECTTO PROTECTIVE ORDER NO. 1, JAN. 2013

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NYC-WTC_000229708