NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 Lab Sample #: 37 Grid Opening Size: 0.01124

Client Sample #: 37 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

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

/jZ)

TZ^ 1

rax -ZX;

<yig2 5^ 25 7

mEEL 77

Photo Mo. (from 1 in b asbestos containing samples) Grid acceptance: Struct = > 0.5p > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals v = Posibve diffraction pattern properties confonning to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overiapped gnd squares <5% F B I C ' M p6p holes or opaque areas v= EDS spectrum conforming to laboratory Chrysotile “1 identification critena observed AMPHIBOLES Amphibole ( F = Single Fiber Amosite ■3 = Bundle ■i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster ;>2 intersections) Anthophyllite Non-Asbestos i Tremolite I M = Matrix Non-Identified ! Actinolite NSC = No Structures Detected

CITY_21MC100_003069470

NYC-WTC_000202926