NYC-WTC_000231431

NYC 9/11 Public Portal Document

rf I TEM Asbestos (air) Count Sheet sample area analyzed B Client Name: Riverpoint, Inc. Job #: 201103187 Volume fliters): 666.0 Lab Sample #: 03 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 101008 Grid Opening Size: 0.01000 "I Received: 10/23/2001 07:30:00 Area Examined: 0.10000 mm2 Date Analyzed: 10/24/2001 Magnification: 20,000 Scone #: Accelerating Voltage: 100 KeV Analysis Performed by: Mikhail Gruzman Grid Length Width Location Opening Fiber /iM gM Fiber Type Morphology EDS Orient. SAED Photo

E3-B4/6 1 NSD u E3-C4/6 2 NSD u u E3-E4/6 3 NSD u E3-F4/6 4 NSD u E3-G4/6 5 NSD u E3-H4/6 6 NSD u E3-K4/6 7 NSD u E4-F4/6 8 NSD u E4-G4/6 9 NSD u E4-H4/6 10 NSD u

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NSD: No Asbestos Structures Detected Comments Modified TEM Level II reports only asbestos fibers >=5 microns in length Structure Density Concentration (str/mm2) (str/cc air) Grid Evaluation Total Grid Openings: 10 Chrysotile Asbestos Structures; 0 <10 <0.0058 13 Grid Openings Covered >50% Amphibole Asbestos Structures: 0 <10 <0.0058 3 Intact Grid Opening > 50% <10 13 Undissolved Filter <10% Asbestos Structures >=5 microns: 0 <0.0058 Total Non-Asbestos Structures: 3 Folded Replica < 50% -'I Total Asbestos Structures: 0 <10 <0.0058 3 Filter Loading < 10% ! 3 Particulate Even Analytical Sensitivity: 10 0.0058

CITY_21MC100_008880378

NYC-WTC_000231562