TEM Asbestos air sample results, NYC BOE, Oct 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Yame: NYC BOE Volume /liters): 1944 Lab Group #: 5827 ilit£LTyEe/FilterAre^ MCE 385 mm- Lab Sample #: 21 Grid Opening Size: 0.01124 Client Sample #: 21 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: 12/^ Accelerating Voltage: 100 KeV # Grid Openings: 4

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No (Nonadb F B C M >=05 p Chrys Amphibole Nonaso Ambig/ND No Coord <5u Elements)

7WJ X- K 4 // HEI r/

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/r—

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: ^=Po.rived~n«oped,esconform,ng.o <50% un.s« ov.^^or .^d Totals laboratory identification criteria obserx'ed least 2C unfolded or overlapped grid squares <5% B C M >5p ^= EDS spectrum conforming to laboratory holes or opaque areas I F identification criteria observed Chrysotile j AMPHIBOLES | Amphibole F = Single Fiber Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolile M = Matrix j Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003106134

NYC-WTC_000185161