Final air sample results, 55 Church Street, undated

NYC 9/11 Public Portal Document

: s

L TESTWELL LABORATORIES, INC. Environmental Laboratory NYS ELAP 2 11142 91 47 Hudson Street, Ossining, New York 10562 NVLAP s 200083-0 AD A d 100147

Transmission Electron Microscopy Results Client: Bovis Lend Lease - LMB 200 Park Avenue New York, New York Date Collected: 05/22/02 Date Recd (lab): 05/23/02 Sample Location: Milleniuni Hilton @ WTC (Various Floors) _ _ Analysis Date: 05/23/02 • 55 Church Street TEM Analyst: D. McCarl New York, New York Analytical Method: AHERA Field Technician: T. Chhetry Filter Type: MCE 0.45 micron vg.Grld Opening: 0.0121mm2 '

Lab Number Volume Grid Sample #: Sample Location: Coll, Openings Grid Area Countable Asb. Concentration Concentration 02TEM # Analyzed Structures Structures/mm= Structures/cc (liters) Analyzed

Inside Work Area 2400 ,280.0 6 0.073 0 <13.77 <0.004 30 50th Floor Inside Work Area 2401 ,280.0 6 0.073 0 <13.77 M 31 50th Floor <0.004 Inside Work Area 32 '2402 1280.0 6 0.073 0 <13.77 <0.004 50th Floor Inside Work Area 33 2403 1280.0 6 0.073 0 <13.77 <0.004 50th Floor.. f Inside Work Area 34 2404 1280.0 6 0.073 0 <13.77 <0.004 50th Floor

35 Field Blank 2405 0.0 6 0.073 0 <13.77 <0,004

36 Field Blank 2406 0.0 6 0.073 0 <13.77 <0.004 Structures/mm2 Structures/cc Total Average Concentrations <13.77 <0.004 r nis report is vie conncenuai property or our caents. i nis cenmcate or anaysisrreport shall 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.

Laboratory Director/Approved Signatory

• .. .. .. ..' - .: ,iT~. •'.:'. .- i- :.: ^ms s. :.

_ `_N,; ... ex~:;.--.. •': i~ ='=+: _ s:: .x+s. r _ _ ti ara - `.- w ~' l -~ ~ _ •.Y•.. I S~ w'-. r,,~•: ~J' + .t ~ . •S -s-/ir•. l.~a~.2 '+~ -tF~~: P?-i 1 G~ • ~. r' •_ - ~L:4 . • _ ~•~';~L•._.~-. _ - u f-fi:f :.....,. ; . .~..,i:. ~._a?a_ • ': '.,i:: .. ~:..~:ir- _ r. .: w~I.'~Yui,.i'e-yr h~:~S'!'.. -. _d ~~L7. -~.i_.

NYC-WTC 000103613