NYC-WTC_000229364

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1808 Lab Group #: 8242 Filter Type / Filter Area: MCE 385 mm* Lab Sample #; 3 Grid Opening Size: 0.01124 Client Sample #; 05 Area Examined: 0.04496 mm^ GRID BOX: Magpifleation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By; MARK PEYSAKHOV

GO, Structure Structure Type Length IO of Structure N or d EDS (Honadb No F B C M >»05p :>=5(J Chrys Ampr,ibol8 Nonasb Aniiig/ND No Coord <5)1 ' Elements)

Struct = > 0,5)1 > 5; t Aspect Ratio Grid acceptance: V- Positive diftracfoii pattern propertiBS conforming to <50% undissolved filter, overlapped or folded Tot^ laboratory idantiteation criteria observed <10% parbculatB coverage >50% coverage ate least 20 unfolded or overlapped grid equates <5% F B C M '/= EDS spectrum conformirtg to laboratory boles or opaque areas identiticalion criteria observed Chrysotile : AMPHIBOLES I Amphibole F = Single Fiber Amosite ' B = Bundle (<3 fibers <1 fiber diameter apart CrcKsdolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSO 5 No Structures Detected

CITY_21MC100_002902448

NYC-WTC_000229364