NYC-WTC_000231431

NYC 9/11 Public Portal Document

71 I TEM Asbestos (air) Count Sheet sample area analyzed [J Client Name: Riverpoint, Inc. Job#: 201103187 Volume filters): 690.0 D Lab Sample #: 20 Client Sample #: 051018 Filter Type / Filter Area: MCE Grid Opening Size: 0.01000 385 mm2

■] Received: 10/23/2001 07:30:00 Area Examined: 0.10000 mm2 I Date Analyzed: 10/24/2001 Magnification: 20,000 Scope #: X ^cgl^ating Voltage: 100 KeV Analysi7perfomied”by?~^^^^^^^^^^^^^ u N^khail Gruzman Location Grid Fiber Length Width Fiber Type Opening /IM /tM Morphology EDS Orient, SAED Photo B2-A4/6 1 NSD □ ri B2-B4/6 2 NSD U B2-C4/6 3 NSD U B2-E4/6 4 NSD u B2-F4/6 5 NSD u B2-G4/6 6 NSD u B2-H4/6 7 NSD u B3-E4/6 8 NSD u B3-F4/6 9 NSD u B3-G4/6 10 NSD u

D

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 <0.0056 KI Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0056 KI Intact Grid Opening >50% Asbestos Structures >=5 microns: 0 <10 <0.0056 KI Undissolved Filter < 10% Total Non-Asbestos Structures: KI Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0056 KI Filter Loading <10% J Analytical Sensitivity: 10 0.0056 K Particulate Even

CITY_21MC1OO_OO888O395

NYC-WTC_000231579