NYC-WTC_000231431

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area analyzed A Client Name: Riverpoint, Inc, 'I Job #: 201103187 Volume (liters): 705.0 Lab Sample #: 12 Filter Type / Filter Area: MCE 385 mm2 J Client Sample #: 201015 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 #: Voltage: 100 KeV Analysis Performed by: Mikhail Gruzman ( Grid Length Width Location Fiber Fiber Type Morphology EDS Orient. SAED Photo Li Opening flM gM D6-B4/6 1 NSD □ D6-C4/6 2 NSD u D6-E4/6 3 NSD u D6-F4/6 4 NSD u D6-G4/6 5 NSD u D6-H4/6 6 NSD u D6-K4/6 7 NSD u D7-G4/6 8 NSD u D7-H4/6 9 NSD u D7-K4/6 10 NSD u

’1

J

'1

NSD; No Asbestos Structures Detected -J 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 <0.0055 13 Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 13 Intact Grid Opening > 50% 1 <10 <0.0055 Undissolved Filter < 10% Asbestos Structures >=5 microns: 0 <0.0055 Total Non-Asbestos Structures; 13 Folded Replica < 50% Total Asbestos Structures: 0 <10 <0,0055 3 Filter Loading < 10% Analytical Sensitivity: 10 0.0055 3 Particulate Even

CITY_21MC100_008880387

NYC-WTC_000231571