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TEM asbestos results summary, NYC Law Department, Feb 2002

Machine-extracted title · confidence 95%

Summary table of transmission electron microscopy results for asbestos fibers in air samples collected at 100 Church Street.

NYC-WTC_000174343–000174345
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NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area analyzed e Client Name: TRC Environmental Corporation Jobfr 202022083 Volume (liters): 600.0 Lab Sample #: 01 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: GSl Grid Opening Size: 0.01000 Received: 02/12/2002 12:57:59 Area Examined: 0.10000 mm2 Date Analyzed: 02/12/2002 Magnification: 20,। Scope #: 7 Accelerating Voltage: 100 KeV

Analysis Performed by: Aleksandr Barengolts Grid Fiber Length Width Fiber Type Location Opening gM gM Morphology EDS Orient. SAED Photo D4-3/1C 1 NSD U D4-3/1E 2 NSD U D4-3/1F 3 NSD U D4-3/1G 4 NSD U D4-3/1H 5 NSD u D4-3/1K 6 NSD u D5-4/4C 7 NSD u D5-4/4E 8 NSD u D5-4/4F 9 NSD u ^5-4/4G 10 NSD u

NSD: No Asbestos Structures Detected Comments Structure Density Concentration (str/mm2) (str/cc air) Grid Evaluation Total Grid Openings: 10 Chrysotile Asbestos Structures: 0 <10 <0.0064 1^ Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0064 Intact Grid Opening > 50% Asbestos Structures >=5 microns: 0 <10 <0.0064 Undissolved Filter < 10% Total Non-Asbestos Structures: S Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0064 Filter Loading < 10% Analytical Sensitivity: 10 0.0064 Particulate Even

CITY_21MC100_012557370 NYC-WTC_000174344

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NYC-WTC_000174344Source: NYC Law Department, mirrored locally

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