NYC-WTC_000222440

NYC 9/11 Public Portal Document

TEMAsbestosJairlCount Sheet Client Name: NYC BOE Volume (liters): 1848 Lab Group #: 7924 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/1/02

Analysis Performed By: MARK PEYSAKHOV

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

Struct = > 0.5,g _> 5:1 Aspect Ratio Grid acceptance: ^1= Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5m EOS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO2889O33

NYC-WTC_000222440