NYC-WTC_000227948

NYC 9/11 Public Portal Document

TEM Asbestos (air) Couiat Sheet Client Name: NYC BOE olume (liters): : t,4f>

Lab Group #: 6832 Filter Type / Filter .Area: ML t

Lab Sample #: 5 Grid Opening Size: iLOi:2

Client Sample #: 05 .Area Examined: 0.0449*5 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 Ke\' # Grid Openings: 4 Analysis Date: 2.26/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v tut iNonadb No F B C M «05p >=5)j Chrys Amphibole Nonasb Ambig/ND ! No . Coord <5m EiementS; -----------h / YA ■ y

XiA: it —

A---- 1

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <=0% untosolved frlter, overlapped or folded Totals __.__ ___________ laboratory ____ <10% particulate coverage >50% coverage ate ____observed identification criteria least 20 unfolded or overlapped grid squares <5% F B C i M ■ > ■/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite Crocidolite Ambiguous 8 = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002899496

NYC-WTC_000227948