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NYC-WTC_000232330

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NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet sample area analyzed

Client Name: HP ENVIRONMENTAL, INC. Job #: 101101001 Volume (liters): 500.0 Lab Sample #: 03 Filter Type/Filter Area: MCE 385 mm2 Client Sample #: ET-TRL-0929-A2 Grid Opening Size: 0.01003 Received: 10/01/2001 02:00:17 Area Examined: 0.10030 mm2 Date Analyzed: 10/01/2001 Magnification: 20,000 Scope #: 4 Acc^erating Voltage: 100 KeV Analysis Performed by: WhitneyHni Grid Length Width Fiber Type Morphology SAED Location Opening Fiber pM pM EDS Orient. Photo

B7-C4/1 1 1 1.0 .06 Chrysotile Matrix Mg, Si, Fe B7-E4/1 2 NSD u B7-F4/1 3 NSD u B7-G4/J 4 NSD u B7-H4/1 5 NSD u B6-C4/1 6 NSD u B6-E4/1 7 NSD u B6-F4/1 8 NSD u B6-G4/1 9 NSD u B6-H4/1 10 NSD u

X,

NSD: No Asbestos Structures Detected Comments Structure Density Concentration Total Grid Openings: 10 (str/mm2) (str/cc air) Grid Evaluation Chrysotile Asbestos Structures: 1 10.0 0.0077 Grid Openings Covered > 50% Amphibole Asbestos Structures: <10 <0.0077 Intact Grid Opening > 50% J 0 Asbestos Structures >=5 microns: 0 <10 <0.0077 S Undissolved Filter < 10% Total Non-Asbestos Structures: KI Folded Replica < 50% Total Asbestos Structures: 1 10.0 0.0077 S Filter Loading < 10% Analytical Sensitivity: 10 0.0077 S Particulate Even ---------- . 06.002247 J

CITY_21MC100_0 03077199

NYC-WTC_000232330

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NYC-WTC_000232330Source: NYC Law Department, mirrored locally

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TEM asbestos air analysis results, Oct 2001

NYC-WTC_000174937

Laboratory report from HP Environmental Inc. detailing transmission electron microscopy analysis of an air sample received October 1, 2001.

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