NYC-WTC_000190230

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters)- 1808 Lab Group #• 6875 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0 01124

Client Sample #: 05 Area Examined: 0 04496 mm-

GRID BOX- Magnification: 20,000 GRID ID- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/1/02 Analysis Perlormed By: _____ ^2^_______

ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND No Cooid Elements) <5p -- --- i 5 1

Struct = > 0 5u >5 I Aspect Ratio Grid acceptance

4= 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 gnd squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification cnteria observed Clirysotile 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-Identifjed Actinolite NSD = No Structures Detected

CITY_21MC100_003088893

NYC-WTC_000190230