NYC-WTC_000231431

NYC 9/11 Public Portal Document

u TEM Asbestos (air) Count Sheet sample area analyzed E Client Name: Riverpoint, Inc. Jab* 201103187 Volume (liters): 652.5 i Lab Sample #: 05 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 021009 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 #: Accelerating Voltage 100 KeV Analysis Performed by: Mikhail Gruzman

Location Grid Fiber Length Width Fiber Type Opening gM gM Morphology EDS Orient. SAED Photo A7-B4/6 1 NSD A7-C4/6 2 NSD U A7-E4/6 3 NSD u A7-F4/6 4 NSD u A7-G4/6 5 NSD u A7.H4/6 6 NSD u A7-K4/6 7 NSD u A8-C4/6 8 NSD u A8-E4/6 9 NSD u AS-F4/C 10 NSD u

n

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 <10 <0.0059 13 Grid Openings Covered > 50% Chrysotile Asbestos Structures: 0 3 Intact Grid Opening > 50% Amphibole Asbestos Structures: 0 <10 <0.0059 D Asbestos Structures >=5 microns: Total Non-Asbestos Structures: 0 <10 <0.0059 13 Undissolved Filter <10% 3 Folded Replica < 50% 3 Filter Loading <10% Total Asbestos Structures: 0 <10 <0.0059 u Analytical Sensitivity: 10 0.0059 3 Particulate Even

CITY_21MC100_008880380

NYC-WTC_000231564