NYC-WTC_000231431

NYC 9/11 Public Portal Document

I I TEM Asbestos (air) Count Sheet sample area analyzed

Client Name: Riverpoint, Inc. Job#: 201103187 Volume niters): 720.0 Lab Sample #; 02 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 051007 Grid Opening Size: 0.01000 Received: 10/23/2001 07:30:00 Area Examined: 0.10000 mm2 Date Analyzed: 10/23/2001 Magnification: 20,000 Scope #: Accelerating Voltage: 100 KeV Analysis Performed by; Aleksandr Barengolts Location Grid Fiber Length Width Morphology Opening /tM gM Fiber Type EDS Orient. SAED Photo E1.6/4C E1-6/4E 1 2 NSD NSD □U E1-6/4F 3 NSD U E1-6/4G 4 NSD U E1-6/4H 5 NSD U E2-4/3C 6 NSD u E2-4/3E 7 NSD u riI E2-4/3F 8 NSD u E2-4/3G 9 NSD u E2-4/3H 10 NSD u

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I NSD: No Asbestos Structures Delected -1 Comments Modified TEM Level 11 reports only asbestos fibers >=5 microns in length Structure Density Concentration (str/mm2) (str/cc air) Grid Evaluation Total Grid Openings: 10 <0.0053 13 Grid Openings Covered > 50% Chrysotile Asbestos Structures: 0 <10 13 Intact Grid Opening > 50% ■■ 1 Amphibole Asbestos Structures: 0 <10 <0.0053 3 Undissolved Filter < 10% Uj Asbestos Structures >=5 microns: 0 <10 <0.0053 [3 Folded Replica < 50% Total Non-Asbestos Structures: <0.0053 3 Filter Loading < 10% Total Asbestos Structures: 0 <10 Analytical Sensitivity; 10 0.0053 3 Particulate Even

CITY_21MC100_008880377

NYC-WTC_000231561