NYC-WTC_000193351

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1864 Lab Group #: 8180 Filter Tvpe / Filter Area: MCE 385 Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/19/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Stnjcture Nor V EDS (Nonadb No F B C M >=05 M >=5(j Chrys Amphibole Nonasb Ambig/ND . No Coord <5m Elements)

ZiS z

Struct = > 0.5p > 5.1 Aspect Ratio Grid acceptance: Positive diffraction pattern properbes conforming to ^50% undissolved filter, overlapped or folded Totals laboratory icentification cntena observed :10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M >5u v= EDS spectrum conforming to aboratory holes or opaque areas identification criteria observed Chrysotile t AMPHIBOLES ’ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos ; Tremolite M = Matrix Actinolite ‘ Non-ldentified NSD = No Structures Detected

CITY_21MC100_003094525

NYC-WTC_000193351