NYC-WTC_000231431

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area I analyzed ! n u Client Name: Riverpoint, Inc. Job#; 201103187 Volume /liters'): 652.5 Lab Sample #: 09 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 021012 Grid Opening Size: 0.01000 Received: 10/23/2001 07:30:00 Area Examined: 0.10000 mm2 Date Analyzed: 10/24/2001 Magnification: 20,000 Scope #: Accelerating Voltage: 100 KeV ]( Analysis Performed by: Kilk hail Gruzman Location Grid Fiber Length Width Opening gM gM Fiber Type Morphology EDS Orient. SAED Photo B10-B4/6 1 NSD □ B10-C4/6 2 NSD u B10-E4/6 3 NSD u B10-F4/6 4 NSD u B10-G4/6 5 NSD u B10-H4/6 6 NSD u B10-K4/6 7 NSD u C6-F4/6 NSD u 0 C6-G4/6 C6-H4/6 8 9 10 NSD NSD u u ! J

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; NSD: No Asbestos Structures Detected _j Comments Modified TEM Level II reports only asbestos fibers >=5 microns in length Structure Density Concentration Total Grid Openings: 10 (slr/mm2) (str/cc air) Grid Evaluation Chrysotile Asbestos Structures: 0 <10 <0.0059 13 Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0059 3 Intact Grid Opening > 50% Asbestos Structures >=5 microns: 0 <10 <0,0059 3 Undissolved Filter < 10% Total Non-Asbestos Structures: 3 Folded Replica < 50% ■ 1 Total Asbestos Structures: 0 <10 <0.0059 3 Filter Loading < 10% J Analytical Sensitivity: 10 0.0059 3 Particulate Even

CITY_21MC1OO_OO888O384

NYC-WTC_000231568