NYC-WTC_000214282

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8140 Filter Tvpe / Filter Area: MCE 385 mm^ Lab Sample #: 4 Gri I Opening Size: 0.01124 Client Sample #: 04 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 6/17/02

Analysis Performed By; MARK PEYSAKHOV

60. Structure Structure Type Length ID of Structure Nor V EOS i (Nonadb ! No F B C M >^|j T i>=5p Chrys Amphibote Nonasb Ambig/ND Elements) ! No Coord <5p ----------------- 1

2

— t—

1

Struct “ > 0.5p > S; 1 Aspect Ratto Giid axeptance; Positive diffraction pattern propenies conlonm.ig to <50% undissolved filter, overlapped or folded Totals laboratory idenufication criteria obser red <10% particulate coverage >50% coverage ate Isas; 20 unfolded or overlapped grid squares <5% F B C M >5p •/= EDS spectrum conforming to laburaiory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber dianiet.r apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002852908

NYC-WTC_000214282