NYC-WTC_000193239

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NAT BOE Volume (liters): 1816 Lab Group #: 8084 Filter Type / Filter Area: MCE 385 Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^

GlUD BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV Analysis Date: 6/13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorV EDS No (Nonadb F B C M >=0571 :>=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern propertie;; confonning to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5m %/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003094366

NYC-WTC_000193239