Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

Environmental, Inc. ATC 104 East 25thYo re10010 ew York, New k 1 N 9 State ELAP Approved N.Y. #108187 Code # Associates Inc. ACCREDITED NVLAP Lab ATC 10/25/01 2DItYh10010et Report Date: 104 East I New York, TEM MISSION ELECTRON MDIpCROSCORPY Spectroscopy (EDS) ANALYSIS BY TRANS E AY ASBESTOS FIBER 30, 1987

I with Fiber Method: AHERA -Area Electron Identification by

Final Rule. EPA Selected NorgyZ10, October Federal Register DiffPa=C17631(S~oi.asZ (40 CFR,

Anal sis Parameters

' Sam le Id entification

Tribeca 105 Duane St. TEM Sample NO.: 576

6 Project/Site: Grid Openings Analyzed:

I Date Received: Various 10 25 01 Average Grid Opening: 10

50 0.0674 mm2 Project Sample No.: Total Area pnalyzed:~~

Air Volume: 130 14 8 s/mm2 Analytical Sensitivity:_--

Pore Size: 25 mm diam. Filter Type: MCE ------------- Effective Area: 385 mm2

------------- CONCENTRATION PARTICULATES FIBROUS obDNed ANPmbe se Total Filter Air Matrix Total. Struct. Struct/cc n m3 Struc[/mm2 Single Strucc. ,-5um Clusters Struct. I Fibers Bundles 0 0.0 0.0000 0 0 0 0 ° Chrysotile Asbestos ° 0.0000 ° 0.0 ° 0

0 0 0.0000 0 Amphibole Asbestos 0.0 ° 0 0 0 0 0.0000 ° I Ambiguous 0.0 0.0000 N/A 0 ° structures) 0.0 N/A (includes ambiguous 0 0 0 0.0000 Total asbestos ° 0 ° 0.0 I Non-Asbestos No Identification 0 0 ° 0 0 0

o ° 0.0 0.0000 N/A

Structures) standard deviation. - - _____ _____----- ----------- Totals (All analysis is 1 of this The estimated uncertainty ------------------- ---- None detected -- d (EDS/SAED asbestos fiber i.d. None detec ed --------------------- t Non- Amphibol e Asbestos Typ approved TEM method. ----------------------- methoc -- - ------- ---- The Analyses was carried compliance mout p with the quality in accordance with the specified for the

I This laboratory is in o Report Reviewed by: Analyzed by: Michael A. Gorycki, Ph.D. Electron Microscopy Roman Peysakhov Director of

NYC-WTC 000104085