NYC-WTC_000200648

NYC 9/11 Public Portal Document

TEM Asbestos Yair) Count Sheet Client Name: NYC BOE Volume (liters): 1805 ' Lab Group #: 8228 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure-Type Length ID of Structure N or N EDS >=0^ I :>=5p (Nonadb' / No F B C M Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

aIb st-

Struct = > 0.5|i > 5: r Aspect Ratio 1 Grid acceptance: f -/= Positive dilfraction pattern properties conforming to 'undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20- unfolded or overlapped grid squares <5% F B C M ■/- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed ■ Chrysotile fAMPHIBOLES^ Amphibole F = Single Fiber I Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ■ C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite (MSD = No Structures Detected

NYC-WTC_000200661