NYC-WTC_000227956

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volunne liitei si: ! S4u Lab Group #: 6832 Filter Type ' Filter Area: MCE Lab Sample #; 15 Grid Opening Size: O.Oi i 2

Client Sample #: 15 Area Examined: 0 0449c mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2'26/02

.Analysis Performed By: ROMAN PEYSAKHOV

GO- Structure Structure Type Length ID of Structure N or 2 EDS (Nonadb No. F B G M >=05 u >=5li Chrys Amptiibole Nonasb Ambig/ND No Coord <5p . Elements)

CM:

r

Struct = > 0.5p > 5:1 Aspect Ratio Grid 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 overtapped grid squares <5% F ! B i C i M I >5c '1= EDS spectrum conforming to laboratory holes or opaque areas i identifleation criteria observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous B = Bundle (<3 libers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T ramolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002899506

NYC-WTC_000227956