NYC-WTC_000219501

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 18!6 Lab Group #: 6898 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 7^ Accelerating Voltage: 100 KeV GRID ID; # Grid Openings; 4 Analysis Date; 3/3/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or V i EDS No >=0^0 ■ Amb^ND I F B C M >=5p Chrys Amphibole Nonasb i Elements) No Coord <5m

t - I iL h

+ I -I-

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

CITY_21MC100_000468049 NYC-WTC_000219501