NYC-WTC_000231431

NYC 9/11 Public Portal Document

n TEM Asbestos (air) Count Sheet sample area analyzed 0- Client Name: Riverpoint, Inc. Jobft 201103187 Volume (liters): 705.0 1 Lab Sample #: 13 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 051016 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: Mikhail Gruzman ■■■] Location Grid Length Width Opening Fiber /uw gM Fiber Type Morphology EDS Orient. SAED Photo J D8-B4/6 1 NSD tJ u u D8-C4/6 D8-E4/6 D8-F4/6 2 3 4 NSD NSD NSD u u D8-G4/6 5 NSD u D8-H4/6 6 NSD u D8-K4/6 7 NSD u D9-F4/6 8 NSD u D9-G4/6 9 NSD u D9-H4/6 10 NSD u

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n NSD; No Asbestos Structures Detected Comments Modified TEM Level II reports only asbestos fibers >=5 microns in length Structure Density Concentration Total Grid Openings: 10 (str/mm2) (str/cc air) Grid Evaluation Chrysotile Asbestos Structures: 0 <10 <0.0055 Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0055 Intact Grid Opening > 50% Asbestos Structures >=5 microns; 0 <10 <0.0055 IS Undissolved Filter <10% Total Non-Asbestos Structures: ISI Folded Replica < 50% 0 <10 <0.0055 Filter Loading < 10% u ■ 1 Total Asbestos Structures: Analytical Sensitivity: 10 0.0055 13 Particulate Even

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NYC-WTC_000231572