NYC-WTC_000201755

NYC 9/11 Public Portal Document

TEM Asbestos (airV Count Sheet Client Name: WCBOE Volume niters): 1840 Lafa Group #: 7045 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 6.04496 GRID BOX: Magnification: 20 000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/12/02

Analysis Performed By: . MARK PEYSAKHOV ;

GO. .Structure Structure Type Length ID of Structure N or A EDS No (Nonadb F B C >=05 p I :>=5p Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5u

.2? S ■

___1_______ i I ■ . Struct = > 0-5 u.> 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped orfolded Totals laboratory identification criteria observed <10% partcuiats coverage >50% coverage ate least 2Q unfolded or overlapped grid squares <5% F B C M >5w •/= EDS scectrum conforming to laboratory holes or opaque areas identification oriteria observed! Chrysotile AMPHIBOLES Amphibole F =Single Fiber ! Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous G = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M-Matrix ! Actinolite Non-Identified NSD = No SIructures Detected

CrTY_21MC100_0 05390036

NYC-WTC_000201755