NYC-WTC_000212467

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet (Jient Name: NYC BOE Volume (liters): 1936 1 .ab Group #: 7446 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124 <?lient Sample #: 14 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or W EDS No (Nonadb I lli\ Coord F B C M >=05 M >=5m Chrys Amphtole Nonasb Ambig/ND <5p Elements)

MS £

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; \ = Positive diffraction pattern prooerties confonning to <50% undissolved fitter, overlapped or folded Totals Icboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C ' M >5p \ = EDS spectrum conforming to laboratory holes or opaque areas icentification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite e = Bundle (<3 fibers <1 fiber a arneter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbeslos Tremolite = Matnx Actinolite I Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO2866616

NYC-WTC_000212467