NYC-WTC_000217783

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 6548 Filter Type / Filter Area: MCE 3S5 mm' Lab Sample #: 8 Grid Opening Size: 0-01124

Client Sample #: 08 Area Examined: 0-04496 mm-

GRID BOX: Magnillcation: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 20'02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or \ i EDS j No F B C M >=05 M >=5iJ Chrys Amphibole Nonasb I AmbigiND i ; No Coord <5m I Elements) |

^4 ■1

f/

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j Struct = > O.Sp > 5:1 Aspect Ratio Grid acceptance; '/= Positive diffraction pattern properties contorming 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 1 B i C ! M ! >5. Chrysotile -4—W-4- 'J- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed ' AMPHIBOLES Amphibole F = Single Filler Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002877851

NYC-WTC_000217783