NYC-WTC_000207571

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BGE Volume (liters): 1920 Lab Group #: 8192 JjlterJ[v£e/FnterArea2 MCE 385 mm’ Lab Sample #: 2. Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/20/02■■

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length . ID of Structure N or 7 EDS ■(Nonadb No F B C M >=05 M >=5!j Chrys Amphibole Nonasb Ambig/ND ' No! Coord <5|j Elements)

Struct = >0.5p >5:1 Aspect Ratio • Grid acceptance: a/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5tJ i '/= EDS spectrum confomiing 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 1

. C = Cluster (>3 Intersections! Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified NSD = No Structures Detected i Actinolite

CITY_21MC100_003015429

NYC-WTC_000207571