NYC-WTC_000228390

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6502 Filter Type / Filter Area: MCE 385 mm^ LabSamBle#; 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV SGrid SI 4 Analysis Date: 1/30/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure SttMCture Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

3^2 z z 22z 4= -

r

Struct ■> 0,5p > 5:1 Aspect Ratio Grid acceptance: V* Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identificalion criteria observed <10% participate coverage >50% coverage ate least 20 unfaided or overlapped grid squares <5% F B C M >5p ■V= EDS specbum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile : AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 Ubers <1 fiber diameter apart Crocidolite Ambiguous C 2 Cluster (>3 Intersections) I Anthophyllite Non-Asbcstos I Tremolite M = Matrix ! Actinolite Non-Identified NSD =* No Structures Detected

CITY_21MC100_000491351 NYC-WTC_000228390