NYC-WTC_000212415

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1920 Lab Group #: 7362 Filter Type / Filter Area: MCE 385 I^fabSamsleth 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm*

(jRlD BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV Analysis Date; 4/9/02

Analysis Performed By: ggg I I

MARKPEYSAKHOV

. GO Structure Structure Type Length IO of Structure Nor v EDS No >-05 p (Nonadb F B C M >=5p Chrys Amphibole Nonasb Ambig/ND ! No i Coord <5p Elements)

-J’ -C-

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Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: \'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identilicatian criteria observed <10% pamoulatB coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle (<3 fibers <1 fiber aiameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios Tremolite M = Matrix Non-Identified Actinolite h SD = No Structures Detected

CITY_21MC100_002866455

NYC-WTC_000212415