NYC-WTC_000231431

NYC 9/11 Public Portal Document

LI TEM Asbestos (air) Count Sheet sample area analyzed R Client Name: Riverpoint, Inc. /'I Job#: 201103187 Volume (liters!: 630.0 Lab Sample #: 10 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 021014 Grid Opening Size: 0.01000 Received: 10/23/2001 07:30:00 u Date Analyzed: 10/24/2001 Scope #: Area Examined: 0.10000 mm2 Magnification: 20,000 Accelerating Voltage: 100 KeV Analysis Performed by: Mikhail Gruzman Grid Length Width Location Opening Fiber tiM Fiber Type Morphology EDS Orient, SAED Photo

C7-A4/6 C7-B4/6 1 2 NSD NSD □u C7-C4/6 3 NSD u C7-E4/6 4 NSD u C7-F4/6 5 NSD u C7-G4/6 6 NSD u C7-H4/6 7 NSD u I C7-K4/6 8 NSD u C8-G4/6 9 NSD u C8-H4/6 10 NSD u

i NSD: No Asbestos Structures Detected -■ Comments Modified TEM Level II reports only asbestos fibers >=5 microns in length Structure Density Concentration 1 Total Grid Openings: 10 (str/mm2) (str/cc air) Grid Evaluation Chrysotile Asbestos Structures: 0 <10 <0.0061 0 Grid Openings Covered > 50% -1 Amphibole Asbestos Structures: 0 <10 <0.0061 1^ Intact Grid Opening > 50% i IZl Undissolved Filter < 10% Asbestos Structures >=5 microns: 0 <10 <0.0061 Total Non-Asbestos Structures: S Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0061 Filter Loading < 10% Analytical Sensitivity: 10 0.0061 Particulate Even

CITY_21MC100_008880385

NYC-WTC_000231569