NYC-WTC_000231431

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area 0- □ analyzed

Client Name: Riverpoint, Inc. Job#: 201103187 Volume (liters): 690.0 ri LiaLSantple^ 11 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 051015 Grid Opening Size: 0.01000 .. 1 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 -1-------------------------------------------------------------------------------------------------

Analysis Performed by: Mikhail Gruzman Grid Length Width Location Opening Fiber p.M Fiber Type Morphology EDS Orient. SAED Photo

C9-B4/6 1 NSD n C9-C4/6 2 NSD u C9-E4/6 3 NSD u C9-F4/6 4 NSD u C9-G4/6 5 NSD u C9-H4/6 6 NSD u C9-K4/6 7 NSD u C10-F4/6 8 NSD u C10-G4/6 9 NSD u C10-H4/6 10 NSD u

fl Li

NSD: No Asbestos Structures Detected J Comments Modified TEM Level II reports only asbestos fibers >=5 microns in length Structure Density Concentration "1I Total Grid Openings: 10 (str/mm2) (str/cc air) Grid Evaluation Chrysotile Asbestos Structures: 0 <10 <0.0056 13 Grid Openings Covered > 50% Amphibole Asbestos Structures: 0 <10 <0.0056 13 Intact Grid Opening > 50% Asbestos Structures >=5 microns: 0 <10 <0.0056 3 Undissolved Filter < 10% Total Non-Asbestos Structures: 3 Folded Replica < 50% Total Asbestos Structures: 0 <10 <0.0056 3FilterLoading<lO% Analytical Sensitivity: 10 0.0056 3 Particulate Even

CITY_21MC100_008880386

NYC-WTC_000231570