NYC-WTC_000189760

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NY’C BOE VolumeJIitersli 1936 Lab Group #: 6228 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 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/29/01

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure Norv EDS (Nonadb No F B C M >=05 u Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

Struct = > 0 5u >5 I Aspect Ratio Gnd acceptance 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 >6u ^/= EDS spectrum conforming to laboratory holes or opaque areas Identification cntena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_004151229

NYC-WTC_000189760