NYC-WTC_000229070

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group 7873 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample 06 Area Examined: 0.04496 mm^ GRID BOX: Magnification; 20,000 GRIDID: Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 5/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID oi StnichJi^ Nor 7 EDS (Nonarib NO F B ; C M >=05 p >=5p Chrys Aitiphitwte Nonast! AnWND /) No Coord , . <5p Elements)

4

4

Struct = > O.5p >5.-i Aspect Ratio Grid acceptanca: '/= Positive diffraction pattern properties cofitormtng to <50% undissoked fitter, overlapped or folded Totals ■aOoi atory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum cenfoming to laboratory frotss (zopaqi® areas Identification cnteria observed Chjysotile AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous B » Bundle (<3 fibers <1 fiber diameter span Crocidolite C = Cluster (>3 Intersections) Anlbopriylfite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD ' No Structures Delected

CITY_21MC100_002902141

NYC-WTC_000229070