TEM asbestos results summary, NYC Law Department, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area analyzed

Client Name: TRC Environmental Corporation Job#: 202022083 Volume niters): 600.0 Lab Sample #: 02 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: GS2 Grid Opening Size: 0.01 552 Received: 02/12/2002 12:57:59 Area Examined: 0.10000 mm2 Date Analyzed: 02/12/2002 Magnification: 20,000 Scope #: 7 Accelerating Voltage: 100 KeV 5

Analysis Performed by: ■M........... Aleksandf B arengolts Grid Fiber Length Width Location Opening gM Fiber Type Morphology EDS Orient. SAED Photo E1-4/6B 1 NSD LJ E1-4/6C 2 NSD U E1-4/6E 3 NSD U E1-4/6F 4 NSD u E1-4/6G 5 NSD u E1-4/6H 6 NSD u E1-4/6K 7 NSD u E2-4/5E 8 NSD u E2-4/5F 9 NSD u ^2-4/5G 10 NSD u

NSD: No Asbestos Structures Detected Comments Structure Density Concentration Total Grid Openings: 10 (str/mm2) (str/cc air) Grid Evaluation Chrysotile Asbestos Structures; 0 <10 <0.0064 Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0064 13 Intact Grid Opening > 50% a Asbestos Structures >=5 microns: 0 <10 <0.0064 3 Undissolved Filter < 10% Total Non-Asbestos Structures: 3 Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0064 3 Filter Loading < 10% id Analytical Sensitivity: 10 0.0064 3 Particulate Even

NYC-WTC_OOO1 74345 CITY_21MC1OO_O12557371